JavaDoc for Admin UI

ccm-core/src/main/java/org/libreccm/ui/admin/applications/ApplicationController.java

@@ -19,6 +19,8 @@
 package org.libreccm.ui.admin.applications;
 
 /**
+ * Interface for controllers providing the UI for managing the instances of 
+ * an application.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/applications/ApplicationTypeInfoItem.java

@@ -21,22 +21,45 @@ package org.libreccm.ui.admin.applications;
 import java.util.Objects;
 
 /**
+ * Data Transfer Object providing the information about an application. Used for
+ * rendering the informations the available applications in UI.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 public class ApplicationTypeInfoItem implements
     Comparable<ApplicationTypeInfoItem> {
 
+    /**
+     * Name of the application.
+     */
     private String name;
 
+    /**
+     * Localized title of the application, if available in the language of the
+     * current user.
+     */
     private String title;
 
+    /**
+     * Localized title of the application, if available in the language of the
+     * current user.
+     */
     private String description;
 
+    /**
+     * Is the application a singleton application?
+     */
     private boolean singleton;
 
+    /**
+     * Number of existing instances of the application.
+     */
     private long numberOfInstances;
 
+    /**
+     * Link the {@link ApplicationController} implementation of the application,
+     * if an implementation is available.
+     */
     private String controllerLink;
 
     protected ApplicationTypeInfoItem() {

ccm-core/src/main/java/org/libreccm/ui/admin/applications/ApplicationsController.java

@@ -40,6 +40,7 @@ import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 
 /**
+ * Controller for the UI for managing application instances.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -60,9 +61,13 @@ public class ApplicationsController {
     @Inject
     private Models models;
 
-//    @Inject
+    /**
-//    private MvcContext mvc;
+     * Retrives the avaiable application types, creates
-
+     * {@link ApplicationTypeInfoItem}s for them and makes them available using
+     * {@link #models}.
+     *
+     * @return The template to render.
+     */
     @GET
     @Path("/")
     @AuthorizationRequired
@@ -83,6 +88,15 @@ public class ApplicationsController {
         return "org/libreccm/ui/admin/applications/applicationtypes.xhtml";
     }
 
+    /**
+     * Helper method for building an {@link ApplicationTypeInfoItem} for an
+     * {@link ApplicationType}.
+     *
+     * @param applicationType The application type.
+     *
+     * @return An {@link ApplicationTypeInfoItem} for the provided application
+     *         type.
+     */
     private ApplicationTypeInfoItem buildTypeInfoItem(
         final ApplicationType applicationType
     ) {
@@ -101,15 +115,9 @@ public class ApplicationsController {
         final Class<? extends ApplicationController> controllerClass
             = applicationType.applicationController();
 
-        if (!DefaultApplicationController.class
+        if (!DefaultApplicationController.class.isAssignableFrom(
-            .isAssignableFrom(controllerClass)) {
+            controllerClass
-//            item.setControllerLink(
+        )) {
-//                mvc.uri(
-//                    String.format(
-//                        "%s#getApplication", controllerClass.getSimpleName()
-//                    )
-//                ).toString()
-//            );
             item.setControllerLink(
                 String.format(
                     "%s#getApplication",

ccm-core/src/main/java/org/libreccm/ui/admin/applications/ApplicationsPage.java

@@ -18,8 +18,6 @@
  */
 package org.libreccm.ui.admin.applications;
 
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
 import org.libreccm.ui.admin.AdminConstants;
 import org.libreccm.ui.admin.AdminPage;
 import org.libreccm.web.ApplicationManager;
@@ -32,6 +30,7 @@ import javax.enterprise.context.ApplicationScoped;
 import javax.inject.Inject;
 
 /**
+ * {@link AdminPage} for managing applications.
  *  
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/applications/DefaultApplicationController.java

@@ -23,6 +23,10 @@ import javax.mvc.Controller;
 import javax.ws.rs.Path;
 
 /**
+ * A default implementation of the {@link ApplicationController} used if there
+ * is not implementation of the {@link ApplicationController} interface for an
+ * application.
+ *
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/applications/package-info.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 LibreCCM Foundation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+/**
+ * UI for managing application instances.
+ */
+package org.libreccm.ui.admin.applications;

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategoriesController.java

@@ -50,6 +50,7 @@ import javax.ws.rs.PathParam;
 import javax.ws.rs.core.MediaType;
 
 /**
+ * Primary controller for the UI for managing category systems and categories.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -79,6 +80,13 @@ public class CategoriesController {
     @Inject
     private Models models;
 
+    /**
+     * Show details about a category.
+     *
+     * @param categoryIdentifier Identifier of the category to show.
+     *
+     * @return The template to render.
+     */
     @GET
     @Path("/{categoryIdentifier}")
     @AuthorizationRequired
@@ -120,6 +128,13 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Show the edit form for a category.
+     *
+     * @param categoryIdentifier Identifier of the category to edit.
+     *
+     * @return The template to render.
+     */
     @GET
     @Path("/{categoryIdentifier}/edit")
     @AuthorizationRequired
@@ -161,6 +176,13 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Displays the form for creating a new subcategory.
+     *
+     * @param categoryIdentifier The identifier of the parent category.
+     *
+     * @return The template to render.
+     */
     @GET
     @Path("/{categoryIdentifier}/subcategories/new")
     @AuthorizationRequired
@@ -202,6 +224,15 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Moves a category from one parent category to another. The target is
+     * provided
+     *
+     * @param categoryIdentifierParam Identifier of the category to move.
+     * @param targetIdentifierParam   Identifier of the target category.
+     *
+     * @return Redirect to the detail page of the target category.
+     */
     @POST
     @Path("/{categoryIdentifier}/subcategories/move")
     @AuthorizationRequired
@@ -286,6 +317,14 @@ public class CategoriesController {
         );
     }
 
+    /**
+     * Deletes a category.
+     *
+     * @param categoryIdentifier Identifier of the category to remove.
+     *
+     * @return Redirect to the details page of the parent category of the
+     *         removed category.
+     */
     @POST
     @Path("/{categoryIdentifier}/subcategories/remove")
     @AuthorizationRequired
@@ -341,6 +380,15 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Adds a localized title the a category.
+     *
+     * @param identifierParam Identifier of the category.
+     * @param localeParam     The locale of the title.
+     * @param value           The localized title.
+     *
+     * @return Redirect to the details page of the category.
+     */
     @POST
     @Path("/{identifier}/title/add")
     @AuthorizationRequired
@@ -390,6 +438,15 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Updates the localized title of a category.
+     *
+     * @param identifierParam Identifier of the category.
+     * @param localeParam     The locale of the title.
+     * @param value           The localized title.
+     *
+     * @return Redirect to the details page of the category.
+     */
     @POST
     @Path("/{identifier}/title/{locale}/edit")
     @AuthorizationRequired
@@ -439,6 +496,14 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Removes the localized title of a category.
+     *
+     * @param categoryIdentifierParam Identifier of the category.
+     * @param localeParam             The locale of the title.
+     *
+     * @return Redirect to the details page of the category.
+     */
     @POST
     @Path("/{identifier}/title/{locale}/remove")
     @AuthorizationRequired
@@ -488,6 +553,15 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Adds a localized description the a category.
+     *
+     * @param identifierParam Identifier of the category.
+     * @param localeParam     The locale of the description
+     * @param value           The localized description.
+     *
+     * @return Redirect to the details page of the category.
+     */
     @POST
     @Path("/{identifier}decsription/add")
     @AuthorizationRequired
@@ -537,6 +611,15 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Updates the localized description the a category.
+     *
+     * @param identifierParam Identifier of the category.
+     * @param localeParam     The locale of the description
+     * @param value           The localized description.
+     *
+     * @return Redirect to the details page of the category.
+     */
     @POST
     @Path("/{identifier}/description/{locale}/edit")
     @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
@@ -587,6 +670,14 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Removes a localized description the a category.
+     *
+     * @param identifierParam Identifier of the category.
+     * @param localeParam     The locale of the description
+     *
+     * @return Redirect to the details page of the category.
+     */
     @POST
     @Path("/{identifier}/description/{locale}/remove")
     @AuthorizationRequired
@@ -635,6 +726,16 @@ public class CategoriesController {
         }
     }
 
+    /**
+     * Changes the order of the subcategories of a category.
+     *
+     * @param categoryIdentifierParam    Identifier of the category.
+     * @param subCategoryIdentifierParam Identifier of the sub category to move.
+     * @param direction                  The direction, either
+     *                                   {@code INCREASE or DECREASE}.
+     *
+     * @return Redirect to the details page of the category.
+     */
     @POST
     @Path("/{categoryIdentifier}/subcategories/{subCategoryIdentifier}/reorder")
     @AuthorizationRequired

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategoriesPage.java

@@ -27,6 +27,8 @@ import java.util.Set;
 import javax.enterprise.context.ApplicationScoped;
 
 /**
+ * {@link AdminPage} implementation for the UI for managing categories. 
+ * 
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategoryDetailsModel.java

@@ -42,6 +42,7 @@ import javax.inject.Named;
 import javax.transaction.Transactional;
 
 /**
+ * Model for the details of a category.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -202,6 +203,11 @@ public class CategoryDetailsModel {
         this.invalidFields = new HashSet<>(invalidFields);
     }
 
+    /**
+     * Sets the model to the properties of the provided category.
+     * 
+     * @param category The category.
+     */
     @Transactional(Transactional.TxType.REQUIRED)
     protected void setCategory(final Category category) {
         Objects.requireNonNull(category);

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategoryFormController.java

@@ -45,6 +45,8 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 
 /**
+ * Controller processing the POST requests from the form for creating and
+ * editing categories.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -86,6 +88,12 @@ public class CategoryFormController {
     @FormParam("abstractCategory")
     private String abstractCategory;
 
+    /**
+     * Create a new category.
+     * 
+     * @param parentCategoryIdentifier Identifier of the parent category.
+     * @return Redirect to the details page of the parent category.
+     */
     @POST
     @Path("/{parentCategoryIdentifier}/new")
     @AuthorizationRequired
@@ -158,6 +166,12 @@ public class CategoryFormController {
         }
     }
 
+    /**
+     * Updates a category with the data from the form.
+     * 
+     * @param categoryIdentifierParam Identifier of the category to update.
+     * @return Redirect to the details page of the category.
+     */
     @POST
     @Path("/{categoryIdentifier}/edit")
     @AuthorizationRequired

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategoryNodeModel.java

@@ -21,6 +21,7 @@ package org.libreccm.ui.admin.categories;
 import java.util.Objects;
 
 /**
+ * A DTO with the of a category shown in the UI.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategoryPathModel.java

@@ -23,6 +23,7 @@ import java.util.Collections;
 import java.util.List;
 
 /**
+ * Model for displaying the path of category in the UI.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategorySystemDetailsModel.java

@@ -46,6 +46,9 @@ import javax.inject.Named;
 import javax.transaction.Transactional;
 
 /**
+ * Model for the details of a category system (Domain)
+ * 
+ * @see org.libreccm.categorization.Domain
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -227,6 +230,10 @@ public class CategorySystemDetailsModel {
         this.invalidFields = new HashSet<>(invalidFields);
     }
 
+    /**
+     * Sets the properties of this model using the provided {@link Domain}.
+     * @param domain The domain to display.
+     */
     @Transactional(Transactional.TxType.REQUIRED)
     protected void setCategorySystem(final Domain domain) {
         Objects.requireNonNull(domain);

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategorySystemFormController.java

@@ -47,6 +47,8 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 
 /**
+ * Controller for processing the {@code POST} requests from the form for
+ * creating and editing category systems.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -82,6 +84,11 @@ public class CategorySystemFormController {
     @FormParam("released")
     private String released;
 
+    /**
+     * Creates a new category system (domain).
+     *
+     * @return Redirect to the list of category systems.
+     */
     @POST
     @Path("/new")
     @AuthorizationRequired
@@ -117,6 +124,13 @@ public class CategorySystemFormController {
         return "redirect:/categorymanager/categorysystems";
     }
 
+    /**
+     * Update a category with the data from the form.
+     *
+     * @param identifierParam Identifier of the category system to update.
+     *
+     * @return Redirect to the details page of the category system.
+     */
     @POST
     @Path("{categorySystemIdentifier}/edit")
     @AuthorizationRequired
@@ -191,6 +205,12 @@ public class CategorySystemFormController {
         }
     }
 
+    /**
+     * Helper method for converting the {@link #released} date to an ISO 8601
+     * formatted string.
+     *
+     * @return The released date in ISO 8601 format.
+     */
     private LocalDate convertReleased() {
         return LocalDate.parse(
             released,
@@ -198,6 +218,11 @@ public class CategorySystemFormController {
         );
     }
 
+    /**
+     * Helper method for validating a URI.
+     *
+     * @return {@code true} if the URI is valid, {@code false} otherwise.
+     */
     private boolean isValidUri() {
         final UrlValidator urlValidator = new UrlValidator();
         return urlValidator.isValid(uri);

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategorySystemOwnerOption.java

@@ -23,6 +23,7 @@ import org.libreccm.web.CcmApplication;
 import java.util.Objects;
 
 /**
+ * DTO for the options for selecting the owner applications of a category system. 
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategorySystemOwnerRow.java

@@ -19,6 +19,7 @@
 package org.libreccm.ui.admin.categories;
 
 /**
+ * Data for a row in the table of owner applications of a category system.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategorySystemTableRow.java

@@ -24,6 +24,7 @@ import java.util.Map;
 import java.util.Objects;
 
 /**
+ * Data for a row in the table of category systems.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategorySystemsController.java

@@ -49,6 +49,7 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 
 /**
+ * Controller for the UI for managing category systems.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -78,13 +79,11 @@ public class CategorySystemsController {
     @Inject
     private Models models;
 
-//    @GET
+    /**
-//    @Path("/")
+     * Show a list of all available category systems.
-//    @AuthorizationRequired
+     *
-//    @RequiresPrivilege(CoreConstants.PRIVILEGE_ADMIN)
+     * @return The template to use.
-//    public String getCategoryManager() {
+     */
-//        return getCategorySystems();
-//    }
     @GET
     @Path("/")
     @AuthorizationRequired
@@ -93,6 +92,14 @@ public class CategorySystemsController {
         return "org/libreccm/ui/admin/categories/categorysystems.xhtml";
     }
 
+    /**
+     * Display the details of a category system.
+     *
+     * @param categorySystemIdentifier Identifier of the category system to
+     *                                 show.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/{categorySystemIdentifier}/details")
     @AuthorizationRequired
@@ -141,6 +148,11 @@ public class CategorySystemsController {
         }
     }
 
+    /**
+     * Show the form for creating a new category system.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/new")
     @AuthorizationRequired
@@ -149,6 +161,14 @@ public class CategorySystemsController {
         return "org/libreccm/ui/admin/categories/categorysystem-form.xhtml";
     }
 
+    /**
+     * Edit a category system.
+     *
+     * @param categorySystemIdentifier Identifier of the category system to
+     *                                 edit.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/{categorySystemIdentifier}/edit")
     @AuthorizationRequired
@@ -198,6 +218,15 @@ public class CategorySystemsController {
         }
     }
 
+    /**
+     * Delete a category system and all its categories.
+     *
+     * @param categorySystemIdentifier Identifier of the category system to
+     *                                 delete.
+     * @param confirmed                Was the deletion confirmed by the user?
+     *
+     * @return Redirect to the categorysystems overview.
+     */
     @POST
     @Path("/{categorySystemIdentifier}/delete")
     @AuthorizationRequired
@@ -250,6 +279,15 @@ public class CategorySystemsController {
         return "redirect:categorymanager/categorysystems";
     }
 
+    /**
+     * Adds a localized title the a category system.
+     *
+     * @param categorySystemIdentifier Identifier of the category system.
+     * @param localeParam              The locale of the title.
+     * @param value                    The localized title.
+     *
+     * @return Redirect to the details page of the category system.
+     */
     @POST
     @Path("/{identifier}/title/add")
     @AuthorizationRequired
@@ -306,6 +344,15 @@ public class CategorySystemsController {
         }
     }
 
+    /**
+     * Updates a localized title the a category system.
+     *
+     * @param categorySystemIdentifier Identifier of the category system.
+     * @param localeParam              The locale of the title.
+     * @param value                    The localized title.
+     *
+     * @return Redirect to the details page of the category system.
+     */
     @POST
     @Path("/{identifier}/title/${locale}/edit")
     @AuthorizationRequired
@@ -362,6 +409,14 @@ public class CategorySystemsController {
         }
     }
 
+    /**
+     * Removes a localized title the a category system.
+     *
+     * @param categorySystemIdentifier Identifier of the category system.
+     * @param localeParam              The locale of the title.
+     *
+     * @return Redirect to the details page of the category system.
+     */
     @POST
     @Path("/{identifier}/title/${locale}/remove")
     @AuthorizationRequired
@@ -422,6 +477,15 @@ public class CategorySystemsController {
         }
     }
 
+    /**
+     * Adds a localized description the a category system.
+     *
+     * @param categorySystemIdentifier Identifier of the category system.
+     * @param localeParam              The locale of the description.
+     * @param value                    The localized description.
+     *
+     * @return Redirect to the details page of the category system.
+     */
     @POST
     @Path("/{identifier}/description/add")
     @AuthorizationRequired
@@ -478,6 +542,15 @@ public class CategorySystemsController {
         }
     }
 
+    /**
+     * Updates a localized description the a category system.
+     *
+     * @param categorySystemIdentifier Identifier of the category system.
+     * @param localeParam              The locale of the description.
+     * @param value                    The localized description.
+     *
+     * @return Redirect to the details page of the category system.
+     */
     @POST
     @Path(
         "categorysystems/{identifier}/description/${locale}/edit"
@@ -536,6 +609,14 @@ public class CategorySystemsController {
         }
     }
 
+    /**
+     * Removes a localized description of a category system.
+     *
+     * @param categorySystemIdentifier Identifier of the category system.
+     * @param localeParam              The locale of the description.
+     *
+     * @return Redirect to the details page of the category system.
+     */
     @POST
     @Path(
         "categorysystems/{identifier}/description/${locale}/remove")
@@ -596,6 +677,15 @@ public class CategorySystemsController {
         }
     }
 
+    /**
+     * Adds an owner to a category system.
+     *
+     * @param categorySystemIdentifier Identifier of teh category system.
+     * @param applicationUuid          UUID of the new owner.
+     * @param context                  An optional context.
+     *
+     * @return Redirect to the details page of the category system.
+     */
     @POST
     @Path("/{categorySystemIdentifier}/owners/add")
     @AuthorizationRequired
@@ -675,6 +765,15 @@ public class CategorySystemsController {
         }
     }
 
+    /**
+     * Remove an owner from a category system.
+     *
+     * @param categorySystemIdentifier Identifier of teh category system.
+     * @param applicationUuid          UUID of the owner to remove.
+     * @param confirmed Was the deletion confirmed by the user?
+     *
+     * @return Redirect to the details page of the category system.
+     */
     @POST
     @Path("/{categorySystemIdentifier}/owners/${applicationUuid}/remove")
     @AuthorizationRequired

ccm-core/src/main/java/org/libreccm/ui/admin/categories/CategorySystemsTableModel.java

@@ -38,6 +38,11 @@ import javax.transaction.Transactional;
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
+/**
+ * Model providing the data for the table of category systems.
+ *
+ * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
+ */
 @RequestScoped
 @Named("CategorySystemsTableModel")
 public class CategorySystemsTableModel {
@@ -45,6 +50,13 @@ public class CategorySystemsTableModel {
     @Inject
     private DomainRepository domainRepository;
 
+    /**
+     * Get all available category systems
+     *
+     * @return A list of
+     *         {@link org.libreccm.ui.admin.categories.CategorySystemTableRow}
+     *         items, one for each available category.
+     */
     @AuthorizationRequired
     @RequiresPrivilege(CoreConstants.PRIVILEGE_ADMIN)
     @Transactional
@@ -57,6 +69,16 @@ public class CategorySystemsTableModel {
             .collect(Collectors.toList());
     }
 
+    /**
+     * Helper method for building a
+     * {@link org.libreccm.ui.admin.categories.CategorySystemTableRow} instance
+     * for a category system.
+     *
+     * @param domain The domain (category system) to convert.
+     *
+     * @return A {@link org.libreccm.ui.admin.categories.CategorySystemTableRow}
+     *         instance for the category.
+     */
     private CategorySystemTableRow buildTableRow(final Domain domain) {
         final CategorySystemTableRow row = new CategorySystemTableRow();
 

ccm-core/src/main/java/org/libreccm/ui/admin/categories/DomainNodeModel.java

@@ -18,7 +18,10 @@
  */
 package org.libreccm.ui.admin.categories;
 
+import org.libreccm.categorization.Domain;
+
 /**
+ * DTO with the data about a {@link Domain} shown in the UI.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/categories/package-info.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 LibreCCM Foundation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+/**
+ * UI for managing category systems (domains) and categories.
+ */
+package org.libreccm.ui.admin.categories;

ccm-core/src/main/java/org/libreccm/ui/admin/configuration/ConfigurationController.java

@@ -38,6 +38,7 @@ import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 
 /**
+ * Controller for the UI for managing the configuration of CCM.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -55,6 +56,11 @@ public class ConfigurationController {
     @Inject
     private Models models;
 
+    /**
+     * Show all available configurations (groups of settings).
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/")
     @AuthorizationRequired
@@ -73,6 +79,16 @@ public class ConfigurationController {
         return "org/libreccm/ui/admin/configuration/configuration.xhtml";
     }
 
+    /**
+     * Helper method for converting a
+     * {@link org.libreccm.configuration.ConfigurationInfo} instance into a
+     * {@link org.libreccm.ui.admin.configuration.ConfigurationTableEntry}
+     * instance.
+     *
+     * @param confInfo Configuration info to convert.
+     *
+     * @return A {@link ConfigurationTableEntry} for the configuration.
+     */
     private ConfigurationTableEntry buildTableEntry(
         final ConfigurationInfo confInfo
     ) {

ccm-core/src/main/java/org/libreccm/ui/admin/configuration/ConfigurationPage.java

@@ -27,11 +27,14 @@ import java.util.Set;
 import javax.enterprise.context.ApplicationScoped;
 
 /**
+ * {@link AdminPage} implementation providing the UI for managing the
+ * configuration of CCM.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 @ApplicationScoped
 public class ConfigurationPage implements AdminPage {
+
     @Override
     public Set<Class<?>> getControllerClasses() {
         final Set<Class<?>> classes = new HashSet<>();
@@ -76,4 +79,5 @@ public class ConfigurationPage implements AdminPage {
     public int getPosition() {
         return 30;
     }
+
 }

ccm-core/src/main/java/org/libreccm/ui/admin/configuration/ConfigurationTableEntry.java

@@ -21,6 +21,7 @@ package org.libreccm.ui.admin.configuration;
 import java.util.Objects;
 
 /**
+ * A row in the table of available configurations.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/configuration/SettingsController.java

@@ -54,6 +54,7 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 
 /**
+ * Controller for the UI for viewing and editing settings.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -78,6 +79,12 @@ public class SettingsController {
     @Inject
     private SettingManager settingManager;
 
+    /**
+     * Show all settings of a configuration.
+     * 
+     * @param configurationClass The configuration class
+     * @return The template to use.
+     */
     @GET
     @Path("/")
     @Transactional(Transactional.TxType.REQUIRED)
@@ -146,6 +153,13 @@ public class SettingsController {
         return "org/libreccm/ui/admin/configuration/settings.xhtml";
     }
 
+    /**
+     * Helper method for building a {@link SettingsTableEntry} for a setting.
+     * 
+     * @param settingInfo The setting to convert.
+     * @param configuration The configuration to which the settings belongs.
+     * @return A {@link SettingsTableEntry} for the setting.
+     */
     @Transactional(Transactional.TxType.REQUIRED)
     private SettingsTableEntry buildSettingsTableEntry(
         final SettingInfo settingInfo,

ccm-core/src/main/java/org/libreccm/ui/admin/configuration/SettingsTableEntry.java

@@ -21,6 +21,7 @@ package org.libreccm.ui.admin.configuration;
 import java.util.Objects;
 
 /**
+ * Data for row in the table of settings of a configuration.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/configuration/package-info.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 LibreCCM Foundation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+/**
+ * UI for editing the configuration of LibreCCM.
+ */
+package org.libreccm.ui.admin.configuration;

ccm-core/src/main/java/org/libreccm/ui/admin/dashboard/DashboardController.java

@@ -28,6 +28,7 @@ import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 
 /**
+ * Controller for the dashboard page (start page) of the Admin UI:
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -36,6 +37,11 @@ import javax.ws.rs.Path;
 @Path("/")
 public class DashboardController {
     
+    /**
+     * Show the dashboard page.
+     * 
+     * @return The template to use.
+     */
     @GET
     @Path("/")
     @AuthorizationRequired

ccm-core/src/main/java/org/libreccm/ui/admin/dashboard/DashboardPage.java

@@ -20,7 +20,6 @@ package org.libreccm.ui.admin.dashboard;
 
 import org.libreccm.ui.admin.AdminConstants;
 import org.libreccm.ui.admin.AdminPage;
-import org.libreccm.ui.admin.configuration.ConfigurationController;
 
 import java.util.HashSet;
 import java.util.Set;
@@ -28,11 +27,13 @@ import java.util.Set;
 import javax.enterprise.context.ApplicationScoped;
 
 /**
+ * {@link AdminPage} implementation for the dashboard page.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 @ApplicationScoped
 public class DashboardPage implements AdminPage {
+
     @Override
     public Set<Class<?>> getControllerClasses() {
         final Set<Class<?>> classes = new HashSet<>();
@@ -76,4 +77,5 @@ public class DashboardPage implements AdminPage {
     public int getPosition() {
         return 0;
     }
+
 }

ccm-core/src/main/java/org/libreccm/ui/admin/dashboard/package-info.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 LibreCCM Foundation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+/**
+ * Start page of the Admin UI.
+ */
+package org.libreccm.ui.admin.dashboard;

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ExportTask.java

@@ -25,17 +25,30 @@ import java.util.Collection;
 import java.util.Collections;
 
 /**
+ * Data for an export task.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 public class ExportTask {
 
+    /**
+     * Name of the export archive.
+     */
     private final String name;
 
+    /**
+     * When was the export task started?
+     */
     private final LocalDate started;
 
+    /**
+     * The entities to export.
+     */
     private final Collection<Exportable> entities;
     
+    /**
+     * The status of the export task.
+     */
     private final ExportTaskStatus status;
 
     public ExportTask(

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ExportTaskStatus.java

@@ -25,17 +25,30 @@ import java.util.Comparator;
 import java.util.Objects;
 
 /**
+ * Status of an export task.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 public class ExportTaskStatus implements Comparable<ExportTaskStatus> {
 
+    /**
+     * Name of the export archive.
+     */
     private String name;
 
+    /**
+     * When was the task started?
+     */
     private LocalDateTime started;
 
+    /**
+     * Status of the export task.
+     */
     private ImExportTaskStatus status;
 
+    /**
+     * If the proces throw an exception, it is stored here.
+     */
     private Throwable exception;
 
     public String getName() {

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ImExportController.java

@@ -41,11 +41,11 @@ import javax.mvc.Controller;
 import javax.mvc.Models;
 import javax.ws.rs.FormParam;
 import javax.ws.rs.GET;
-import javax.ws.rs.NotFoundException;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
 
 /**
+ * Controller for the Import/Export UI.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -63,6 +63,12 @@ public class ImExportController {
     @Inject
     private Models models;
 
+    /**
+     * Provides the main page with an overview of all running import/export
+     * processes.
+     *
+     * @return
+     */
     @GET
     @Path("/")
     @AuthorizationRequired
@@ -71,6 +77,11 @@ public class ImExportController {
         return "org/libreccm/ui/admin/imexport/imexport.xhtml";
     }
 
+    /**
+     * UI for starting exports.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/export")
     @AuthorizationRequired
@@ -99,6 +110,14 @@ public class ImExportController {
         return "org/libreccm/ui/admin/imexport/export.xhtml";
     }
 
+    /**
+     * Starts an export.
+     *
+     * @param selectedEntitiesParam The entity types selected for export.
+     * @param exportName            The name of the export archive.
+     *
+     * @return Redirect to the main import/export page.
+     */
     @POST
     @Path("/export")
     @AuthorizationRequired
@@ -135,6 +154,11 @@ public class ImExportController {
         return "redirect:imexport";
     }
 
+    /**
+     * Displays the import page that allows to select a import archive.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/import")
     @AuthorizationRequired
@@ -157,6 +181,13 @@ public class ImExportController {
         return "org/libreccm/ui/admin/imexport/import.xhtml";
     }
 
+    /**
+     * Execute an import.
+     *
+     * @param importArchive The name of the import archive to use.
+     *
+     * @return Redirect to to the main import/export page.
+     */
     @POST
     @Path("/import")
     @AuthorizationRequired
@@ -169,10 +200,34 @@ public class ImExportController {
         return "redirect:imexport";
     }
 
+    /**
+     * Merge function for {@link Collectors#toMap(java.util.function.Function, java.util.function.Function, java.util.function.BinaryOperator, java.util.function.Supplier).
+     *
+     * @param str1 First key
+     * @param str2 Second key
+     *
+     * @return First key.
+     *
+     * @throws RuntimeException if both keys are equal.
+     */
     private String noDuplicateKeys(final String str1, final String str2) {
+        if (str1.equals(str2)) {
             throw new RuntimeException("No duplicate keys allowed.");
+        } else {
+            return str1;
+        }
     }
 
+    /**
+     * Helper method for adding required entities to an export task. Some entity
+     * types require also other entity types. This method traverses through the
+     * selected entity types of an export and adds required entity types if
+     * necessary.
+     *
+     * @param selectedNodes The selected entity types.
+     *
+     * @return The final list of exported types.
+     */
     private Set<EntityImExporterTreeNode> addRequiredEntities(
         final Set<EntityImExporterTreeNode> selectedNodes
     ) {
@@ -196,6 +251,16 @@ public class ImExportController {
         }
     }
 
+    /**
+     * Helper function to build an
+     * {@link org.libreccm.ui.admin.imexport.ImportOption} instance from a
+     * {@link org.libreccm.imexport.ImportManifest}.
+     *
+     * @param manifest The manifest to map to a
+     *                 {@link org.libreccm.ui.admin.imexport.ImportOption}.
+     *
+     * @return An {@link org.libreccm.ui.admin.imexport.ImportOption} instance.
+     */
     private ImportOption buildImportOption(final ImportManifest manifest) {
         return new ImportOption(
             manifest.getImportName(),

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ImExportPage.java

@@ -27,6 +27,7 @@ import java.util.Set;
 import javax.enterprise.context.ApplicationScoped;
 
 /**
+ * Provides the UI for importing and exporting entities.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ImExportTaskStatus.java

@@ -19,13 +19,23 @@
 package org.libreccm.ui.admin.imexport;
 
 /**
+ * Enumeration for the possible states of an export or import task.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 public enum ImExportTaskStatus {
 
+    /**
+     * An error occured during the process.
+     */
     ERROR,
+    /**
+     * The import or export task is finished.
+     */
     FINISHED,
+    /**
+     * The task is still running.
+     */
     RUNNING,
 
 }

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ImExportTasks.java

@@ -29,6 +29,8 @@ import javax.inject.Inject;
 import javax.transaction.Transactional;
 
 /**
+ * Listens for CDI events fired by {@link org.libreccm.ui.admin.imexport.ImportExportTaskManager}
+ * and executes tasks.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -38,7 +40,12 @@ public class ImExportTasks {
     @Inject
     private ImportExport importExport;
 
-    
+    /**
+     * Listens for {@link org.libreccm.ui.admin.imexport.ExportTask}s.
+     * 
+     * @param task The task to execute.
+     * @return The task.
+     */
     @Transactional(Transactional.TxType.REQUIRED)
     public ExportTask exportEntities(@ObservesAsync final ExportTask task) {
         final Collection<Exportable> entities = task.getEntities();
@@ -49,6 +56,12 @@ public class ImExportTasks {
         return task;
     }
 
+    /**
+     * Listens for {@link org.libreccm.ui.admin.imexport.ImportTask}s.
+     * 
+     * @param task The task to execute.
+     * @return The task.
+     */
     @Transactional(Transactional.TxType.REQUIRED)
     public void importEntitites(@ObservesAsync final ImportTask task) {
         final String importName = task.getName();
@@ -56,5 +69,4 @@ public class ImExportTasks {
         importExport.importEntities(importName);
     }
 
-
 }

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ImportExportTaskManager.java

@@ -30,6 +30,7 @@ import java.util.HashSet;
 import java.util.Set;
 import java.util.SortedSet;
 import java.util.TreeSet;
+import java.util.concurrent.CompletionStage;
 
 import javax.ejb.Schedule;
 import javax.enterprise.context.ApplicationScoped;
@@ -43,6 +44,7 @@ import javax.persistence.criteria.Root;
 import javax.transaction.Transactional;
 
 /**
+ * Provides the backend for importing and exporting entities.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -54,17 +56,34 @@ public class ImportExportTaskManager {
         ImportExportTaskManager.class
     );
 
+    /**
+     * Entity manager used for some special queries. To execute import and
+     * export tasks concurrently CDI events are used which are processed by the
+     * {@link ImExportTasks} class.
+     */
     @Inject
     private EntityManager entityManager;
 
+    /**
+     * CDI event sender for export tasks.
+     */
     @Inject
     private Event<ExportTask> exportTaskSender;
 
+    /**
+     * CDI event sender for import tasks.
+     */
     @Inject
     private Event<ImportTask> importTaskSender;
 
+    /**
+     * Status of all active export tasks.
+     */
     private final SortedSet<ExportTaskStatus> exportTasks;
 
+    /**
+     * Status of all active import tasks.
+     */
     private final SortedSet<ImportTaskStatus> importTasks;
 
     public ImportExportTaskManager() {
@@ -80,14 +99,31 @@ public class ImportExportTaskManager {
         );
     }
 
+    /**
+     * Returns the active export tasks.
+     *
+     * @return All active export tasks.
+     */
     public SortedSet<ExportTaskStatus> getExportTasks() {
         return Collections.unmodifiableSortedSet(exportTasks);
     }
 
+    /**
+     * Returns the active import tasks.
+     *
+     * @return All active import tasks.
+     */
     public SortedSet<ImportTaskStatus> getImportTasks() {
         return Collections.unmodifiableSortedSet(importTasks);
     }
 
+    /**
+     * Export all entities of the selected entity types.
+     *
+     * @param exportTypes The entity types to export.
+     * @param exportName  Name of the export archive.
+     *
+     */
     @Transactional(Transactional.TxType.REQUIRED)
     public void exportEntities(
         final Set<Class<? extends Exportable>> exportTypes,
@@ -107,7 +143,7 @@ public class ImportExportTaskManager {
         taskStatus.setStarted(LocalDateTime.now());
         exportTaskSender.fireAsync(
             new ExportTask(exportName, LocalDate.now(), entities, taskStatus)
-        ).handle((task , ex) -> handleExportTaskResult(task, ex, taskStatus));
+        ).handle((task, ex) -> handleExportTaskResult(task, ex, taskStatus));
 
         taskStatus.setStatus(ImExportTaskStatus.RUNNING);
         exportTasks.add(taskStatus);
@@ -124,13 +160,27 @@ public class ImportExportTaskManager {
         importTasks.add(taskStatus);
     }
 
+    /**
+     * Called every 5 minutes to remove finished tasks from {@link #exportTasks}
+     * and and {@link #importTasks}.
+     */
     @Schedule(hour = "*", minute = "*/5", persistent = false)
     protected void removeFinishedTasks() {
-        exportTasks.removeIf(taskStatus -> taskStatus.getStatus() == ImExportTaskStatus.FINISHED);
+        exportTasks.removeIf(
-//        importTasks.removeIf(taskStatus -> taskStatus.getStatus() == ImExportTaskStatus.FINISHED);
+            taskStatus -> taskStatus.getStatus() == ImExportTaskStatus.FINISHED
+        );
+        importTasks.removeIf(
+            taskStatus -> taskStatus.getStatus() == ImExportTaskStatus.FINISHED
+        );
     }
 
-    
+    /**
+     * Collects the entities of the provided types for exporting.
+     *
+     * @param ofType The entity type.
+     *
+     * @return All entities of the provided type.
+     */
     private Set<? extends Exportable> collectEntities(
         final Class<Exportable> ofType
     ) {
@@ -145,6 +195,19 @@ public class ImportExportTaskManager {
         );
     }
 
+    /**
+     * Handler function for processing the result of an export tasks.
+     *
+     * @param task   The task.
+     * @param ex     Exception thrown during the export process. If the export
+     *               process run without errors, this parameter will be
+     *               {@code null}.
+     * @param status The status of the task.
+     *
+     * @return The task.
+     * 
+     * @see CompletionStage#handle(java.util.function.BiFunction)
+     */
     private Object handleExportTaskResult(
         final ExportTask task, final Throwable ex, final ExportTaskStatus status
     ) {
@@ -159,6 +222,19 @@ public class ImportExportTaskManager {
         return task;
     }
 
+    /**
+     * Handler function for processing the result of an import tasks.
+     *
+     * @param task   The task.
+     * @param ex     Exception thrown during the import process. If the import
+     *               process run without errors, this parameter will be
+     *               {@code null}.
+     * @param status The status of the task.
+     *
+     * @return The task.
+     *
+     * @see CompletionStage#handle(java.util.function.BiFunction)
+     */
     private Object handleImportTaskResult(
         final ImportTask task, final Throwable ex, final ImportTaskStatus status
     ) {
@@ -172,4 +248,5 @@ public class ImportExportTaskManager {
         }
         return task;
     }
+
 }

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ImportOption.java

@@ -18,16 +18,26 @@
  */
 package org.libreccm.ui.admin.imexport;
 
+import org.libreccm.imexport.ImportManifest;
+
 import java.util.Objects;
 
 /**
+ * Provides a preprocessed {@link ImportManifest} for easier use in a template.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 public class ImportOption implements Comparable<ImportOption> {
 
+    /**
+     * Name of the import.
+     */
     private final String importName;
 
+    /**
+     * Label of the import, includes the relevant data from the
+     * {@link ImportManifest}.
+     */
     private final String label;
 
     public ImportOption(

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ImportTask.java

@@ -21,15 +21,25 @@ package org.libreccm.ui.admin.imexport;
 import java.time.LocalDate;
 
 /**
+ * Data for an import task.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 public class ImportTask {
 
+    /**
+     * Name of the import archive.
+     */
     private final String name;
 
+    /**
+     * When was the import task started?
+     */
     private final LocalDate started;
 
+    /**
+     * The status of the import task.
+     */
     private final ImportTaskStatus status;
 
     public ImportTask(

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/ImportTaskStatus.java

@@ -25,24 +25,36 @@ import java.util.Comparator;
 import java.util.Objects;
 
 /**
+ * Status of an import task.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 public class ImportTaskStatus implements Comparable<ImportTaskStatus> {
 
+    /**
+     * Name of the import archive.
+     */
     private String name;
 
+    /**
+     * When was the task started?
+     */
     private LocalDateTime started;
 
+    /**
+     * Status of the import task.
+     */
     private ImExportTaskStatus status;
 
+    /**
+     * If the proces throw an exception, it is stored here.
+     */
     private Throwable exception;
 
     public String getName() {
         return name;
     }
 
-   
     protected void setName(final String name) {
         this.name = name;
     }
@@ -104,7 +116,6 @@ public class ImportTaskStatus implements Comparable<ImportTaskStatus> {
         return status == other.getStatus();
     }
 
-    
     public boolean canEqual(final Object obj) {
         return obj instanceof ImportTaskStatus;
     }

ccm-core/src/main/java/org/libreccm/ui/admin/imexport/package-info.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 LibreCCM Foundation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+/**
+ * UI for importing and exporting entities.
+ */
+package org.libreccm.ui.admin.imexport;

ccm-core/src/main/java/org/libreccm/ui/admin/sites/SiteDetailsModel.java

@@ -22,7 +22,6 @@ import org.libreccm.sites.Site;
 import org.libreccm.theming.ThemeInfo;
 import org.libreccm.ui.Message;
 
-import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
@@ -33,6 +32,7 @@ import javax.enterprise.context.RequestScoped;
 import javax.inject.Named;
 
 /**
+ * Model providing the properties of a site for the UI.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -96,6 +96,12 @@ public class SiteDetailsModel {
         messages.add(message);
     }
 
+    /**
+     * Set the properties of this model to the values of the properties of the
+     * provided site.
+     *
+     * @param site The site.
+     */
     protected void setSite(final Site site) {
         Objects.requireNonNull(site);
 

ccm-core/src/main/java/org/libreccm/ui/admin/sites/SiteFormController.java

@@ -42,6 +42,8 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 
 /**
+ * Controller for processing the {@code POST} requests from the form for
+ * creating and editing sites.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -71,6 +73,11 @@ public class SiteFormController {
     @FormParam("defaultTheme")
     private String defaultTheme;
 
+    /**
+     * Create a new site.
+     * 
+     * @return Redirect to the sites overview.
+     */
     @POST
     @Path("/new")
     @AuthorizationRequired
@@ -90,6 +97,12 @@ public class SiteFormController {
         return "redirect:sites";
     }
 
+    /**
+     * Update a site with the data from the form.
+     * 
+     * @param siteIdentifierParam The identifier of the site to update.
+     * @return Redirect to the details page of the site.
+     */
     @POST
     @Path("/{siteIdentifier}/edit")
     @AuthorizationRequired
@@ -147,6 +160,9 @@ public class SiteFormController {
         }
     }
 
+    /**
+     * Helper method for resetting the default site of an installation.
+     */
     private void resetDefaultSite() {
         final Optional<Site> result = siteRepository
             .findDefaultSite();

ccm-core/src/main/java/org/libreccm/ui/admin/sites/SiteTableRow.java

@@ -19,6 +19,7 @@
 package org.libreccm.ui.admin.sites;
 
 /**
+ * Data for a row in the table showing all available sites.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/sites/SitesController.java

@@ -47,6 +47,7 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 
 /**
+ * Primary controller for the UI for managing sites.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -73,6 +74,11 @@ public class SitesController {
     @Inject
     private Themes themes;
 
+    /**
+     * Show all available sites.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/")
     @AuthorizationRequired
@@ -91,6 +97,13 @@ public class SitesController {
         return "org/libreccm/ui/admin/sites/sites.xhtml";
     }
 
+    /**
+     * Show the details of a site.
+     *
+     * @param siteIdentifierParam Identifier of the site to show.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/{siteIdentifier}/details")
     @AuthorizationRequired
@@ -137,6 +150,11 @@ public class SitesController {
         }
     }
 
+    /**
+     * Show the form for creating a new site.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/new")
     @AuthorizationRequired
@@ -147,6 +165,13 @@ public class SitesController {
         return "org/libreccm/ui/admin/sites/site-form.xhtml";
     }
 
+    /**
+     * Show the form for editing a site.
+     *
+     * @param siteIdentifierParam The identifier of the site to edit.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/{siteIdentifier}/edit")
     @AuthorizationRequired
@@ -193,6 +218,14 @@ public class SitesController {
         }
     }
 
+    /**
+     * Delete a site.
+     *
+     * @param siteIdentifierParam The identifier of the site to delete.
+     * @param confirmed           Was the deletion confirmed by the user?
+     *
+     * @return Redirect to the list of all available sites.
+     */
     @POST
     @Path("/{identifier}/delete")
     @AuthorizationRequired
@@ -229,6 +262,15 @@ public class SitesController {
         return "redirect:sites";
     }
 
+    /**
+     * Helper method for building a
+     * {@link org.libreccm.ui.admin.sites.SiteTableRow} instance for a
+     * {@link Site}.
+     *
+     * @param site The site.
+     *
+     * @return A {@link SiteTableRow} instance for the site.
+     */
     private SiteTableRow buildSiteTableRow(final Site site) {
         final SiteTableRow row = new SiteTableRow();
         row.setSiteId(site.getObjectId());

ccm-core/src/main/java/org/libreccm/ui/admin/sites/SitesPage.java

@@ -27,6 +27,7 @@ import java.util.Set;
 import javax.enterprise.context.ApplicationScoped;
 
 /**
+ * {@link AdminPage} implementation for the UI for managing sites.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/sites/package-info.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 LibreCCM Foundation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+/**
+ * UI for managing sites.
+ */
+package org.libreccm.ui.admin.sites;

ccm-core/src/main/java/org/libreccm/ui/admin/systeminformation/SystemInformationController.java

@@ -30,6 +30,7 @@ import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 
 /**
+ * Controller for the systeminformations page.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -38,9 +39,11 @@ import javax.ws.rs.Path;
 @Path("/systeminformation")
 public class SystemInformationController {
 
-    @Inject
+    /**
-    private MvcContext mvc; 
+     * Show the system information page.
-    
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/")
     @AuthorizationRequired

ccm-core/src/main/java/org/libreccm/ui/admin/systeminformation/SystemInformationModel.java

@@ -30,6 +30,7 @@ import javax.enterprise.context.RequestScoped;
 import javax.inject.Named;
 
 /**
+ * Model providing the date for the system information page.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -37,6 +38,12 @@ import javax.inject.Named;
 @Named("SystemInformationModel")
 public class SystemInformationModel {
 
+    /**
+     * Get some data about this LibreCCM installation, eg. version, application
+     * name, and homepage.
+     *
+     * @return The information about this CCM installation.
+     */
     public Map<String, String> getCcmSystemInformation() {
         final Properties properties = new Properties();
         try {
@@ -64,6 +71,11 @@ public class SystemInformationModel {
         return sysInfo;
     }
 
+    /**
+     * Get the Java System Properties from the runtime environment.
+     * 
+     * @return The Java System Properties of the runtime environment.
+     */
     public Map<String, String> getJavaSystemProperties() {
         final Properties systemProperties = System.getProperties();
         final Map<String, String> result = new HashMap<>();
@@ -74,4 +86,5 @@ public class SystemInformationModel {
         }
         return result;
     }
+
 }

ccm-core/src/main/java/org/libreccm/ui/admin/systeminformation/SystemInformationPage.java

@@ -27,6 +27,7 @@ import org.libreccm.ui.admin.AdminPage;
 import javax.enterprise.context.ApplicationScoped;
 
 /**
+ * {@link AdminPage} implementaton for the system information page.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/systeminformation/package-info.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 LibreCCM Foundation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+/**
+ * UI for inspecting some information about LibreCCM and the runtime environment.
+ */
+package org.libreccm.ui.admin.systeminformation;

ccm-core/src/main/java/org/libreccm/ui/admin/themes/ThemesController.java

@@ -21,12 +21,7 @@ package org.libreccm.ui.admin.themes;
 import org.libreccm.core.CoreConstants;
 import org.libreccm.security.AuthorizationRequired;
 import org.libreccm.security.RequiresPrivilege;
-import org.libreccm.theming.ThemeInfo;
 import org.libreccm.theming.Themes;
-import org.libreccm.theming.manager.ThemeManager;
-;
-
-import java.util.List;
 
 import javax.enterprise.context.RequestScoped;
 import javax.inject.Inject;
@@ -40,11 +35,10 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 
 /**
+ * Primary controller for the UI for managing themes.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
-
-
 @RequestScoped
 @Controller
 @Path("/themes")
@@ -53,10 +47,14 @@ public class ThemesController {
     @Inject
     private Themes themes;
 
-  
     @Inject
     private Models models;
 
+    /**
+     * Show all available themes.
+     *
+     * @return The template to use.
+     */
     @GET
     @Path("/")
     @AuthorizationRequired
@@ -66,6 +64,14 @@ public class ThemesController {
         return "org/libreccm/ui/admin/themes/themes.xhtml";
     }
 
+    /**
+     * Create a new theme.
+     *
+     * @param themeName    The name of the new theme.
+     * @param providerName The provider of the new theme.
+     *
+     * @return Redirect to the list of available themes.
+     */
     @POST
     @Path("/new")
     @AuthorizationRequired
@@ -80,6 +86,13 @@ public class ThemesController {
         return "redirect:themes/";
     }
 
+    /**
+     * (Re-)Publish a theme.
+     *
+     * @param themeName The theme to (re-)publish.
+     *
+     * @return Redirect to the list of themes.
+     */
     @POST
     @Path("/{themeName}/publish")
     @AuthorizationRequired
@@ -91,6 +104,13 @@ public class ThemesController {
         return "redirect:themes/";
     }
 
+    /**
+     * Unpublish a theme.
+     *
+     * @param themeName The theme to unpublish.
+     *
+     * @return Redirect to the list of themes.
+     */
     @POST
     @Path("/{themeName}/unpublish")
     @AuthorizationRequired
@@ -102,6 +122,13 @@ public class ThemesController {
         return "redirect:themes/";
     }
 
+    /**
+     * Delete a theme.
+     *
+     * @param themeName The theme to delete.
+     *
+     * @return Redirect to the list of themes.
+     */
     @POST
     @Path("/{themeName}/delete")
     @AuthorizationRequired
@@ -113,5 +140,4 @@ public class ThemesController {
         return "redirect:themes/";
     }
 
-    
 }

ccm-core/src/main/java/org/libreccm/ui/admin/themes/ThemesModel.java

@@ -34,12 +34,11 @@ import java.util.Optional;
 import java.util.stream.Collectors;
 
 import javax.enterprise.context.RequestScoped;
-import javax.enterprise.inject.Any;
-import javax.enterprise.inject.Instance;
 import javax.inject.Inject;
 import javax.inject.Named;
 
 /**
+ * Model for the themes page.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
@@ -53,6 +52,11 @@ public class ThemesModel {
     @Inject
     private Themes themes;
 
+    /**
+     * Get all available themes.
+     *
+     * @return A list of all available themes.
+     */
     public List<ThemesTableRow> getThemes() {
         return themes
             .getAvailableThemes()
@@ -61,6 +65,12 @@ public class ThemesModel {
             .collect(Collectors.toList());
     }
 
+    /**
+     * Get all available {@link org.libreccm.theming.ThemeProvider}s which
+     * support changes and draft themes.
+     *
+     * @return
+     */
     public Map<String, String> getProviderOptions() {
         return themes
             .getThemeProviders()
@@ -75,8 +85,15 @@ public class ThemesModel {
             );
     }
 
+    /**
+     * Helper function for mapping a {@link ThemeInfo} instance to a
+     * {@link ThemesTableRow} instance.
+     *
+     * @param themeInfo The {@link ThemeInfo} instance to map.
+     *
+     * @return A {@link ThemesTableRow} instance for the theme.
+     */
     private ThemesTableRow mapThemeInfo(final ThemeInfo themeInfo) {
-
         final LocalizedTextsUtil textsUtil = globalizationHelper
             .getLocalizedTextsUtil(AdminConstants.ADMIN_BUNDLE);
 

ccm-core/src/main/java/org/libreccm/ui/admin/themes/ThemesPage.java

@@ -27,6 +27,7 @@ import java.util.Set;
 import javax.enterprise.context.ApplicationScoped;
 
 /**
+ * {@link AdminPage} implementation for the UI for managing themes.
  * 
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/themes/ThemesTableRow.java

@@ -24,6 +24,7 @@ import java.io.Serializable;
 import java.util.Comparator;
 
 /**
+ * Data of theme for displaying in the table of available themes.
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */

ccm-core/src/main/java/org/libreccm/ui/admin/themes/package-info.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 LibreCCM Foundation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+/**
+ * UI for managing themes.
+ */
+package org.libreccm.ui.admin.themes;