[UPDATE]

- modifies managed/back references - adds updated export data for import git-svn-id: https://svn.libreccm.org/ccm/ccm_ng@4472 8810af33-2d31-482b-a856-94f89814c4df
2016-12-12 18:43:27 +00:00 · 2016-12-12 18:43:27 +00:00 · c762750b6d
parent eab9004678
commit c762750b6d
18 changed files with 210 additions and 180 deletions
--- a/ccm-core/src/main/java/org/libreccm/categorization/Categorization.java
+++ b/ccm-core/src/main/java/org/libreccm/categorization/Categorization.java
@ -19,6 +19,7 @@
 package org.libreccm.categorization;

 import com.fasterxml.jackson.annotation.JsonBackReference;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import org.libreccm.core.CcmObject;
 import org.libreccm.portation.Portable;

@ -84,7 +85,7 @@ public class Categorization implements Serializable, Portable {
     */
    @ManyToOne
    @JoinColumn(name = "CATEGORY_ID")
-    @JsonBackReference
+    @JsonManagedReference(value = "categorization-category")
    private Category category;

    /**
@ -92,7 +93,7 @@ public class Categorization implements Serializable, Portable {
     */
    @ManyToOne
    @JoinColumn(name = "OBJECT_ID")
-    @JsonBackReference
+    @JsonManagedReference(value = "categorization-object")
    private CcmObject categorizedObject;

    /**
--- a/ccm-core/src/main/java/org/libreccm/categorization/Category.java
+++ b/ccm-core/src/main/java/org/libreccm/categorization/Category.java
@ -182,7 +182,7 @@ public class Category extends CcmObject implements InheritsPermissions,
     */
    @OneToMany(mappedBy = "category")
    @XmlElementWrapper(name = "objects", namespace = CAT_XML_NS)
-    @JsonManagedReference
+    @JsonBackReference(value = "categorization-category")
    private List<Categorization> objects;

    /**
@ -191,7 +191,7 @@ public class Category extends CcmObject implements InheritsPermissions,
    @OneToMany(mappedBy = "parentCategory")
    @XmlElementWrapper(name = "subcategories", namespace = CAT_XML_NS)
    @XmlElement(name = "category")
-    @JsonManagedReference
+    @JsonBackReference(value = "parentcategory-subcategory")
    private List<Category> subCategories;

    /**
@ -200,7 +200,7 @@ public class Category extends CcmObject implements InheritsPermissions,
     */
    @ManyToOne
    @JoinColumn(name = "PARENT_CATEGORY_ID")
-    @JsonBackReference
+    @JsonManagedReference(value = "parentcategory-subcategory")
    private Category parentCategory;

    /**
--- a/ccm-core/src/main/java/org/libreccm/core/CcmObject.java
+++ b/ccm-core/src/main/java/org/libreccm/core/CcmObject.java
@ -18,12 +18,12 @@
 */
 package org.libreccm.core;

+import com.fasterxml.jackson.annotation.JsonBackReference;
 import com.fasterxml.jackson.annotation.JsonManagedReference;
 import org.hibernate.envers.Audited;
 import org.libreccm.categorization.Categorization;
 import org.libreccm.categorization.Category;
 import org.libreccm.categorization.CategoryManager;
-import org.libreccm.portation.Portable;
 import org.libreccm.security.Permission;

 import javax.persistence.Column;
@ -117,7 +117,7 @@ public class CcmObject implements Identifiable, Serializable {
    @OneToMany(mappedBy = "object")
    @XmlElementWrapper(name = "permissions", namespace = CORE_XML_NS)
    @XmlElement(name = "permission", namespace = CORE_XML_NS)
-    @JsonManagedReference
+    @JsonBackReference(value = "permission-object")
    private List<Permission> permissions;

    /**
@ -126,7 +126,7 @@ public class CcmObject implements Identifiable, Serializable {
    @OneToMany(mappedBy = "categorizedObject")
    @XmlElementWrapper(name = "categories", namespace = CORE_XML_NS)
    @XmlElement(name = "category", namespace = CORE_XML_NS)
-    @JsonManagedReference
+    @JsonBackReference(value = "categorization-object")
    private List<Categorization> categories;

    public CcmObject() {
--- a/ccm-core/src/main/java/org/libreccm/portation/AbstractMarshaller.java
+++ b/ccm-core/src/main/java/org/libreccm/portation/AbstractMarshaller.java
@ -22,7 +22,8 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializationFeature;
 import com.fasterxml.jackson.dataformat.xml.JacksonXmlModule;
 import com.fasterxml.jackson.dataformat.xml.XmlMapper;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;

 import java.io.File;
 import java.io.FileWriter;
@ -43,7 +44,8 @@ import java.util.List;
 */
 public abstract class AbstractMarshaller<P extends Portable> {

-    private static final Logger log = Logger.getLogger(AbstractMarshaller.class);
+    private static final Logger LOGGER = LogManager.getLogger(AbstractMarshaller
+            .class);

    private Format format;
    private String filename;
@ -73,11 +75,14 @@ public abstract class AbstractMarshaller<P extends Portable> {
                JacksonXmlModule module = new JacksonXmlModule();
                module.setDefaultUseWrapper(false);
                xmlMapper = new XmlMapper(module);
+
                if (indentation) {
                    xmlMapper.enable(SerializationFeature.INDENT_OUTPUT);
                }
+
                break;

+
            default:
                break;
        }
@ -117,8 +122,9 @@ public abstract class AbstractMarshaller<P extends Portable> {
        try {
            fileWriter = new FileWriter(file);
        } catch (IOException e) {
-            log.error(String.format("Unable to open a fileWriter for the file" +
-                    " with the name %s.", file.getName()));
+            LOGGER.error("Unable to open a fileWriter for the file" +
+                    " with the name {}.", file.getName());
+            LOGGER.error(e);
        }
        if (fileWriter != null) {
            for (P object : exportList) {
@ -128,11 +134,12 @@ public abstract class AbstractMarshaller<P extends Portable> {
                    case XML:
                        try {
                            line = xmlMapper.writeValueAsString(object);
-                            //log.info(line);
+                            //LOGGER.info(line);
                        } catch (IOException e) {
-                            log.error(String.format("Unable to write objetct " +
-                                    "of class %s as XML string with name %s.",
-                                    object.getClass(), file.getName()), e);
+                            LOGGER.error("Unable to write objetct " +
+                                    "of class {} as XML string with name {}.",
+                                    object.getClass(), file.getName());
+                            LOGGER.error(e);
                        }
                        break;

@ -144,16 +151,18 @@ public abstract class AbstractMarshaller<P extends Portable> {
                        fileWriter.write(line);
                        fileWriter.write(System.getProperty("line.separator"));
                    } catch (IOException e) {
-                        log.error(String.format("Unable to write to file with" +
-                                " the name %s.", file.getName()));
+                        LOGGER.error("Unable to write to file with" +
+                                " the name {}.", file.getName());
+                        LOGGER.error(e);
                    }
                }
            }
            try {
                fileWriter.close();
            } catch (IOException e) {
-                log.error(String.format("Unable to close a fileWriter for the" +
-                        " file with the name %s.", file.getName()));
+                LOGGER.error("Unable to close a fileWriter for the" +
+                        " file with the name {}.", file.getName());
+                LOGGER.error(e);
            }
        }
    }
@ -173,8 +182,9 @@ public abstract class AbstractMarshaller<P extends Portable> {
        try {
            lines = Files.readAllLines(file.toPath());
        } catch (IOException e) {
-            log.error(String.format("Unable to read lines of the file with " +
-                    "name %s.", file.getName()));
+            LOGGER.error("Unable to read lines of the file with " +
+                    "name {}.", file.getName());
+            LOGGER.error(e);
        }

        List<P> objects = new ArrayList<>();
@ -186,8 +196,9 @@ public abstract class AbstractMarshaller<P extends Portable> {
                        try {
                            object = xmlMapper.readValue(line, getObjectClass());
                        } catch (IOException e) {
-                            log.error(String.format("Unable to read objects " +
-                                    "from XML line:\n \"%s\"", line), e);
+                            LOGGER.error("Unable to read objects " +
+                                    "from XML line:\n \"{}\"", line);
+                            LOGGER.error(e);
                        }
                        break;

--- a/ccm-core/src/main/java/org/libreccm/portation/Marshaller.java
+++ b/ccm-core/src/main/java/org/libreccm/portation/Marshaller.java
@ -111,7 +111,9 @@ public class Marshaller {
    private <P extends Portable> void exportList(List<P> list,
                                                 Class<? extends P> type,
                                                 Format format,
-                                                 String filename) {
+                                                 String filename)
+            throws IllegalArgumentException {
+
        final Instance<AbstractMarshaller<? extends Portable>>
                marshallerInstance = marshallerInstances.select(new
                MarshalsLiteral(type));
@ -153,8 +155,10 @@ public class Marshaller {
     * @param format The import style
     * @param <P> The type of the current marshaller
     */
-    public <P extends Portable> void importFiles(
-            List<String> filenames, Format format) {
+    public <P extends Portable> void importFiles(List<String> filenames,
+                                                 Format format)
+            throws IllegalArgumentException {
+
        for (String filename : filenames) {
            String[] splitFilename = filename.split("__");
            String className =
--- a/ccm-core/src/main/java/org/libreccm/security/Group.java
+++ b/ccm-core/src/main/java/org/libreccm/security/Group.java
@ -18,18 +18,10 @@
 */
 package org.libreccm.security;

-import static org.libreccm.core.CoreConstants.*;
-
-import com.fasterxml.jackson.annotation.JsonManagedReference;
+import com.fasterxml.jackson.annotation.JsonBackReference;
 import org.libreccm.core.DefaultEntityGraph;
 import org.libreccm.portation.Portable;

-import java.io.Serializable;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.Objects;
-import java.util.Set;
-
 import javax.persistence.Entity;
 import javax.persistence.NamedAttributeNode;
 import javax.persistence.NamedEntityGraph;
@ -42,6 +34,14 @@ import javax.persistence.Table;
 import javax.xml.bind.annotation.XmlElement;
 import javax.xml.bind.annotation.XmlElementWrapper;
 import javax.xml.bind.annotation.XmlRootElement;
+import java.io.Serializable;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+import static org.libreccm.core.CoreConstants.CORE_XML_NS;
+import static org.libreccm.core.CoreConstants.DB_SCHEMA;

 /**
 * A group is basically a collection of users.
@ -101,7 +101,7 @@ public class Group extends Party implements Serializable, Portable {
    @OneToMany(mappedBy = "group")
    @XmlElementWrapper(name = "group-memberships", namespace = CORE_XML_NS)
    @XmlElement(name = "group-membership", namespace = CORE_XML_NS)
-    @JsonManagedReference
+    @JsonBackReference(value = "groupmembership-group")
    private Set<GroupMembership> memberships = new HashSet<>();

    public Group() {
--- a/ccm-core/src/main/java/org/libreccm/security/GroupMembership.java
+++ b/ccm-core/src/main/java/org/libreccm/security/GroupMembership.java
@ -19,13 +19,9 @@
 package org.libreccm.security;

 import com.fasterxml.jackson.annotation.JsonBackReference;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import org.libreccm.portation.Portable;

-import static org.libreccm.core.CoreConstants.*;
-
-import java.io.Serializable;
-import java.util.Objects;
-
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
@ -39,6 +35,11 @@ import javax.persistence.Table;
 import javax.xml.bind.annotation.XmlElement;
 import javax.xml.bind.annotation.XmlRootElement;
 import javax.xml.bind.annotation.XmlTransient;
+import java.io.Serializable;
+import java.util.Objects;
+
+import static org.libreccm.core.CoreConstants.CORE_XML_NS;
+import static org.libreccm.core.CoreConstants.DB_SCHEMA;

 /**
 * A association class representing the assoication between a {@link User} and
@ -66,13 +67,13 @@ public class GroupMembership implements Serializable, Portable {
    @ManyToOne
    @JoinColumn(name = "GROUP_ID")
    @XmlTransient
-    @JsonBackReference
+    @JsonManagedReference(value = "groupmembership-group")
    private Group group;

    @ManyToOne
    @JoinColumn(name = "MEMBER_ID")
    @XmlTransient
-    @JsonBackReference
+    @JsonManagedReference(value = "groupmembership-user")
    private User member;

    public long getMembershipId() {
--- a/ccm-core/src/main/java/org/libreccm/security/Party.java
+++ b/ccm-core/src/main/java/org/libreccm/security/Party.java
@ -18,17 +18,8 @@
 */
 package org.libreccm.security;

-import static org.libreccm.core.CoreConstants.*;
-
-import com.fasterxml.jackson.annotation.JsonManagedReference;
+import com.fasterxml.jackson.annotation.JsonBackReference;
 import org.libreccm.core.DefaultEntityGraph;
-import org.libreccm.portation.Portable;
-
-import java.io.Serializable;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.Objects;
-import java.util.Set;

 import javax.persistence.Column;
 import javax.persistence.Entity;
@ -48,6 +39,14 @@ import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Pattern;
 import javax.xml.bind.annotation.XmlElement;
 import javax.xml.bind.annotation.XmlElementWrapper;
+import java.io.Serializable;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+import static org.libreccm.core.CoreConstants.CORE_XML_NS;
+import static org.libreccm.core.CoreConstants.DB_SCHEMA;

 /**
 * Party is a base class for {@link User} and {@link Group} defining some common
@ -99,7 +98,7 @@ public class Party implements Serializable {
    @OneToMany(mappedBy = "member")
    @XmlElementWrapper(name = "role-memberships", namespace = CORE_XML_NS)
    @XmlElement(name = "role-membership", namespace = CORE_XML_NS)
-    @JsonManagedReference
+    @JsonBackReference(value = "rolemembership-party")
    private Set<RoleMembership> roleMemberships = new HashSet<>();

    protected Party() {
--- a/ccm-core/src/main/java/org/libreccm/security/Permission.java
+++ b/ccm-core/src/main/java/org/libreccm/security/Permission.java
@ -19,6 +19,7 @@
 package org.libreccm.security;

 import com.fasterxml.jackson.annotation.JsonBackReference;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import org.libreccm.core.CcmObject;
 import org.libreccm.portation.Portable;

@ -97,7 +98,7 @@ public class Permission implements Serializable, Portable {
     */
    @ManyToOne
    @JoinColumn(name = "OBJECT_ID")
-    @JsonBackReference
+    @JsonManagedReference(value = "permission-object")
    private CcmObject object;

    /**
@ -105,7 +106,7 @@ public class Permission implements Serializable, Portable {
     */
    @ManyToOne
    @JoinColumn(name = "GRANTEE_ID")
-    @JsonBackReference
+    @JsonManagedReference(value = "permission-role")
    private Role grantee;

    /**
--- a/ccm-core/src/main/java/org/libreccm/security/Role.java
+++ b/ccm-core/src/main/java/org/libreccm/security/Role.java
@ -18,6 +18,7 @@
 */
 package org.libreccm.security;

+import com.fasterxml.jackson.annotation.JsonBackReference;
 import com.fasterxml.jackson.annotation.JsonManagedReference;
 import org.hibernate.validator.constraints.NotBlank;
 import org.libreccm.core.DefaultEntityGraph;
@ -150,7 +151,7 @@ public class Role implements Serializable, Portable {
    @OneToMany(mappedBy = "role")
    @XmlElementWrapper(name = "role-memberships", namespace = CORE_XML_NS)
    @XmlElement(name = "role-membership", namespace = CORE_XML_NS)
-    @JsonManagedReference
+    @JsonBackReference(value = "rolemembership-role")
    private Set<RoleMembership> memberships = new HashSet<>();

    /**
@ -159,11 +160,11 @@ public class Role implements Serializable, Portable {
    @OneToMany(mappedBy = "grantee")
    @XmlElementWrapper(name = "permissions", namespace = CORE_XML_NS)
    @XmlElement(name = "permission", namespace = CORE_XML_NS)
-    @JsonManagedReference
+    @JsonBackReference(value = "permission-role")
    private List<Permission> permissions = new ArrayList<>();

    @OneToMany(mappedBy = "role")
-    @JsonManagedReference
+    @JsonBackReference(value = "taskassignment-role")
    private List<TaskAssignment> assignedTasks;

    /**
--- a/ccm-core/src/main/java/org/libreccm/security/RoleMembership.java
+++ b/ccm-core/src/main/java/org/libreccm/security/RoleMembership.java
@ -19,13 +19,9 @@
 package org.libreccm.security;

 import com.fasterxml.jackson.annotation.JsonBackReference;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import org.libreccm.portation.Portable;

-import static org.libreccm.core.CoreConstants.*;
-
-import java.io.Serializable;
-import java.util.Objects;
-
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
@ -39,6 +35,11 @@ import javax.persistence.Table;
 import javax.xml.bind.annotation.XmlElement;
 import javax.xml.bind.annotation.XmlRootElement;
 import javax.xml.bind.annotation.XmlTransient;
+import java.io.Serializable;
+import java.util.Objects;
+
+import static org.libreccm.core.CoreConstants.CORE_XML_NS;
+import static org.libreccm.core.CoreConstants.DB_SCHEMA;

 /**
 * Association class representing the association between a {@link Role} and a
@ -67,13 +68,13 @@ public class RoleMembership implements Serializable, Portable {
    @ManyToOne
    @JoinColumn(name = "ROLE_ID")
    @XmlTransient
-    @JsonBackReference
+    @JsonManagedReference(value = "rolemembership-role")
    private Role role;

    @ManyToOne
    @JoinColumn(name = "MEMBER_ID")
    @XmlTransient
-    @JsonBackReference
+    @JsonManagedReference(value = "rolemembership-party")
    private Party member;

    public long getMembershipId() {
--- a/ccm-core/src/main/java/org/libreccm/security/User.java
+++ b/ccm-core/src/main/java/org/libreccm/security/User.java
@ -18,21 +18,11 @@
 */
 package org.libreccm.security;

-import static org.libreccm.core.CoreConstants.*;
-
-import com.fasterxml.jackson.annotation.JsonManagedReference;
+import com.fasterxml.jackson.annotation.JsonBackReference;
 import org.libreccm.core.DefaultEntityGraph;
 import org.libreccm.core.EmailAddress;
 import org.libreccm.portation.Portable;

-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Objects;
-import java.util.Set;
-
 import javax.persistence.AssociationOverride;
 import javax.persistence.CollectionTable;
 import javax.persistence.Column;
@ -57,6 +47,16 @@ import javax.xml.bind.annotation.XmlElement;
 import javax.xml.bind.annotation.XmlElementWrapper;
 import javax.xml.bind.annotation.XmlRootElement;
 import javax.xml.bind.annotation.XmlTransient;
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+
+import static org.libreccm.core.CoreConstants.CORE_XML_NS;
+import static org.libreccm.core.CoreConstants.DB_SCHEMA;

 /**
 * A user is a person (or a system) accessing CCM. A user authenticates itself
@ -204,7 +204,7 @@ public class User extends Party implements Serializable, Portable {
    @OneToMany(mappedBy = "member")
    @XmlElementWrapper(name = "group-memberships", namespace = CORE_XML_NS)
    @XmlElement(name = "group-membership", namespace = CORE_XML_NS)
-    @JsonManagedReference
+    @JsonBackReference(value = "groupmembership-user")
    private Set<GroupMembership> groupMemberships = new HashSet<>();

    protected User() {
--- a/ccm-core/src/main/java/org/libreccm/workflow/AssignableTask.java
+++ b/ccm-core/src/main/java/org/libreccm/workflow/AssignableTask.java
@ -18,19 +18,10 @@
 */
 package org.libreccm.workflow;

-import static org.libreccm.core.CoreConstants.*;
-
-import com.fasterxml.jackson.annotation.JsonManagedReference;
+import com.fasterxml.jackson.annotation.JsonBackReference;
 import org.libreccm.portation.Portable;
 import org.libreccm.security.User;

-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Date;
-import java.util.List;
-import java.util.Objects;
-
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.JoinColumn;
@ -41,6 +32,14 @@ import javax.persistence.OneToOne;
 import javax.persistence.Table;
 import javax.persistence.Temporal;
 import javax.persistence.TemporalType;
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Date;
+import java.util.List;
+import java.util.Objects;
+
+import static org.libreccm.core.CoreConstants.DB_SCHEMA;

 /**
 * A task which can be assigned to a user. Also a {@code AssignableTask} can be
@ -130,7 +129,7 @@ public class AssignableTask extends Task implements Serializable, Portable {
     * The roles to which task is assigned.
     */
    @OneToMany(mappedBy = "task")
-    @JsonManagedReference
+    @JsonBackReference(value = "taskassignment-assignabletask")
    private List<TaskAssignment> assignments;

    public AssignableTask() {
--- a/ccm-core/src/main/java/org/libreccm/workflow/Task.java
+++ b/ccm-core/src/main/java/org/libreccm/workflow/Task.java
@ -20,6 +20,8 @@ package org.libreccm.workflow;

 import static org.libreccm.core.CoreConstants.*;

+import com.fasterxml.jackson.annotation.JsonBackReference;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import org.libreccm.core.CcmObject;
 import org.libreccm.core.Identifiable;
 import org.libreccm.l10n.LocalizedString;
@ -157,12 +159,14 @@ public class Task implements Identifiable, Serializable {
     */
    @ManyToOne
    @JoinColumn(name = "WORKFLOW_ID")
+    @JsonManagedReference(value = "task-workflow")
    private Workflow workflow;

    /**
     * Tasks which the depends of this task.
     */
    @ManyToMany(mappedBy = "dependsOn")
+    @JsonBackReference(value = "dependson-dependent")
    private List<Task> dependentTasks;

    /**
@ -175,6 +179,7 @@ public class Task implements Identifiable, Serializable {
                   @JoinColumn(name = "DEPENDS_ON_TASK_ID")},
               inverseJoinColumns = {
                   @JoinColumn(name = "DEPENDENT_TASK_ID")})
+    @JsonManagedReference(value = "dependson-dependent")
    private List<Task> dependsOn;

    /**
--- a/ccm-core/src/main/java/org/libreccm/workflow/TaskAssignment.java
+++ b/ccm-core/src/main/java/org/libreccm/workflow/TaskAssignment.java
@ -18,15 +18,11 @@
 */
 package org.libreccm.workflow;

-import static org.libreccm.core.CoreConstants.*;
-
 import com.fasterxml.jackson.annotation.JsonBackReference;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import org.libreccm.portation.Portable;
 import org.libreccm.security.Role;

-import java.io.Serializable;
-import java.util.Objects;
-
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
@ -35,6 +31,10 @@ import javax.persistence.Id;
 import javax.persistence.JoinColumn;
 import javax.persistence.ManyToOne;
 import javax.persistence.Table;
+import java.io.Serializable;
+import java.util.Objects;
+
+import static org.libreccm.core.CoreConstants.DB_SCHEMA;

 /**
 * Represents the assignment of a {@link AssignableTask} to a {@link Role}.
@ -60,7 +60,7 @@ public class TaskAssignment implements Serializable, Portable {
     */
    @ManyToOne
    @JoinColumn(name = "TASK_ID")
-    @JsonBackReference
+    @JsonManagedReference(value = "taskassignment-assignabletask")
    private AssignableTask task;

    /**
@ -68,7 +68,7 @@ public class TaskAssignment implements Serializable, Portable {
     */
    @ManyToOne
    @JoinColumn(name = "ROLE_ID")
-    @JsonBackReference
+    @JsonManagedReference(value = "taskassignment-role")
    private Role role;

    public long getTaskAssignmentId() {
--- a/ccm-core/src/main/java/org/libreccm/workflow/Workflow.java
+++ b/ccm-core/src/main/java/org/libreccm/workflow/Workflow.java
@ -20,6 +20,7 @@ package org.libreccm.workflow;

 import static org.libreccm.core.CoreConstants.*;

+import com.fasterxml.jackson.annotation.JsonBackReference;
 import org.libreccm.core.CcmObject;
 import org.libreccm.l10n.LocalizedString;

@ -151,6 +152,7 @@ public class Workflow implements Identifiable, Serializable, Portable {
     * The tasks belonging to this workflow.
     */
    @OneToMany(mappedBy = "workflow")
+    @JsonBackReference(value = "task-workflow")
    private List<Task> tasks;

    public Workflow() {
--- a/ccm-core/src/test/java/org/libreccm/portation/CoreDataImportTest.java
+++ b/ccm-core/src/test/java/org/libreccm/portation/CoreDataImportTest.java
@ -77,12 +77,14 @@ public class CoreDataImportTest {
                                "CoreDataImportTest.war")
                .addPackage(org.libreccm.categorization.Category
                        .class.getPackage())
-                .addPackage(org.libreccm.core.CcmObject.class.getPackage())
+                .addPackage(org.libreccm.core.CcmObject
+                        .class.getPackage())
                .addPackage(org.libreccm.l10n.LocalizedString
                        .class.getPackage())
                .addPackage(org.libreccm.portation.AbstractMarshaller
                        .class.getPackage())
-                .addPackage(org.libreccm.security.Group.class.getPackage())
+                .addPackage(org.libreccm.security.Group
+                        .class.getPackage())
                .addPackage(org.libreccm.workflow.AssignableTask
                        .class.getPackage())
                .addPackage(org.libreccm.configuration.ConfigurationManager
@ -91,6 +93,10 @@ public class CoreDataImportTest {
                        .class.getPackage())
                .addPackage(org.libreccm.testutils.EqualsVerifier
                        .class.getPackage())
+                .addPackage(org.libreccm.web.CcmApplication
+                        .class.getPackage())
+                .addPackage(org.libreccm.jpa.EntityManagerProducer
+                        .class.getPackage())
                .addAsLibraries(getModuleDependencies())
                .addAsResource("test-persistence.xml",
                        "META-INF/persistence.xml")
@ -113,72 +119,72 @@ public class CoreDataImportTest {
    public void categoriesShouldBeImported() {
        ImportHelper.importCategories();
    }
-//
-//    @Test
-//    @InSequence(110)
-//    public void categorizationsShouldBeImported() {
-//        ImportHelper.importCategorizations();
-//    }
-//
-//    @Test
-//    @InSequence(115)
-//    public void usersShouldBeImported() {
-//        ImportHelper.importUsers();
-//    }
-//
-//    @Test
-//    @InSequence(120)
-//    public void groupsShouldBeImported() {
-//        ImportHelper.importGroups();
-//    }
-//
-//    @Test
-//    @InSequence(125)
-//    public void groupMembershipsShouldBeImported() {
-//        ImportHelper.importGroupMemberships();
-//    }
-//
-//    @Test
-//    @InSequence(130)
-//    public void rolesShouldBeImported() {
-//        ImportHelper.importRoles();
-//    }
-//
-//    @Test
-//    @InSequence(135)
-//    public void roleMembershipsShouldBeImported() {
-//        ImportHelper.importRoleMemberships();
-//    }
-//
-//    @Test
-//    @InSequence(140)
-//    public void workflowTemplatesShouldBeImported() {
-//        ImportHelper.importWorkflowTemplates();
-//    }
-//
-//    @Test
-//    @InSequence(145)
-//    public void workflowsShouldBeImported() {
-//        ImportHelper.importWorkflows();
-//    }
-//
-//    @Test
-//    @InSequence(150)
-//    public void assignableTasksShouldBeImported() {
-//        ImportHelper.importAssignableTasks();
-//    }
-//
-//    @Test
-//    @InSequence(155)
-//    public void taskAssignmentsShouldBeImported() {
-//        ImportHelper.importTaskAssignments();
-//    }
-//
-//    @Test
-//    @InSequence(160)
-//    public void permissionsShouldBeImported() {
-//        ImportHelper.importPermissions();
-//    }
+
+    @Test
+    @InSequence(110)
+    public void categorizationsShouldBeImported() {
+        ImportHelper.importCategorizations();
+    }
+
+    @Test
+    @InSequence(115)
+    public void usersShouldBeImported() {
+        ImportHelper.importUsers();
+    }
+
+    @Test
+    @InSequence(120)
+    public void groupsShouldBeImported() {
+        ImportHelper.importGroups();
+    }
+
+    @Test
+    @InSequence(125)
+    public void groupMembershipsShouldBeImported() {
+        ImportHelper.importGroupMemberships();
+    }
+
+    @Test
+    @InSequence(130)
+    public void rolesShouldBeImported() {
+        ImportHelper.importRoles();
+    }
+
+    @Test
+    @InSequence(135)
+    public void roleMembershipsShouldBeImported() {
+        ImportHelper.importRoleMemberships();
+    }
+
+    @Test
+    @InSequence(140)
+    public void workflowTemplatesShouldBeImported() {
+        ImportHelper.importWorkflowTemplates();
+    }
+
+    @Test
+    @InSequence(145)
+    public void workflowsShouldBeImported() {
+        ImportHelper.importWorkflows();
+    }
+
+    @Test
+    @InSequence(150)
+    public void assignableTasksShouldBeImported() {
+        ImportHelper.importAssignableTasks();
+    }
+
+    @Test
+    @InSequence(155)
+    public void taskAssignmentsShouldBeImported() {
+        ImportHelper.importTaskAssignments();
+    }
+
+    @Test
+    @InSequence(160)
+    public void permissionsShouldBeImported() {
+        ImportHelper.importPermissions();
+    }


 }
--- a/ccm-core/src/test/java/org/libreccm/portation/ImportHelper.java
+++ b/ccm-core/src/test/java/org/libreccm/portation/ImportHelper.java
@ -43,17 +43,16 @@ import java.util.List;
 */
 class ImportHelper {
    private static String pathName =
-            "/home/tosmers/Svn/libreccm/ccm-ng/ccm-core/src/test/resource" +
-                    "/portation/trunk-iaw-export";
+            "/home/tosmers/Svn/libreccm/ccm_ng/ccm-core/src/test/resources/" +
+                    "portation/trunk-iaw-exports";
    private static boolean indentation = false;

-    private static String blub = "Hallo";

    static void importCategories() {
        CategoryMarshaller categoryMarshaller = new
                CategoryMarshaller();
        categoryMarshaller.prepare(Format.XML, pathName,
-                "categories", indentation);
+                "categories.xml", indentation);
        List<Category> categories = categoryMarshaller.importFile();
    }

@ -61,21 +60,21 @@ class ImportHelper {
        CategorizationMarshaller categorizationMarshaller = new
                CategorizationMarshaller();
        categorizationMarshaller.prepare(Format.XML, pathName,
-                "categorizations", indentation);
+                "categorizations.xml", indentation);
        categorizationMarshaller.importFile();
    }

    static void importUsers() {
        UserMarshaller userMarshaller = new UserMarshaller();
        userMarshaller.prepare(Format.XML, pathName,
-                "users", indentation);
+                "users.xml", indentation);
        userMarshaller.importFile();
    }

    static void importGroups() {
        GroupMarshaller groupMarshaller = new GroupMarshaller();
        groupMarshaller.prepare(Format.XML, pathName,
-                "groups", indentation);
+                "groups.xml", indentation);
        groupMarshaller.importFile();
    }

@ -83,14 +82,14 @@ class ImportHelper {
        GroupMembershipMarshaller groupMembershipMarshaller = new
                GroupMembershipMarshaller();
        groupMembershipMarshaller.prepare(Format.XML, pathName,
-                "groupMemberships", indentation);
+                "groupMemberships.xml", indentation);
        groupMembershipMarshaller.importFile();
    }

    static void importRoles() {
        RoleMarshaller roleMarshaller = new RoleMarshaller();
        roleMarshaller.prepare(Format.XML, pathName,
-                "roles", indentation);
+                "roles.xml", indentation);
        roleMarshaller.importFile();
    }

@ -98,7 +97,7 @@ class ImportHelper {
        RoleMembershipMarshaller roleMembershipMarshaller = new
                RoleMembershipMarshaller();
        roleMembershipMarshaller.prepare(Format.XML, pathName,
-                "roleMemberships", indentation);
+                "roleMemberships.xml", indentation);
        roleMembershipMarshaller.importFile();
    }

@ -106,7 +105,7 @@ class ImportHelper {
        WorkflowTemplateMarshaller workflowTemplateMarshaller = new
                WorkflowTemplateMarshaller();
        workflowTemplateMarshaller.prepare(Format.XML, pathName,
-                "workflowTemplates", indentation);
+                "workflowTemplates.xml", indentation);
        workflowTemplateMarshaller.importFile();
    }

@ -114,7 +113,7 @@ class ImportHelper {
        WorkflowMarshaller workflowMarshaller = new
                WorkflowMarshaller();
        workflowMarshaller.prepare(Format.XML, pathName,
-                "workflows", indentation);
+                "workflows.xml", indentation);
        workflowMarshaller.importFile();
    }

@ -122,7 +121,7 @@ class ImportHelper {
        AssignableTaskMarshaller assignableTaskMarshaller = new
                AssignableTaskMarshaller();
        assignableTaskMarshaller.prepare(Format.XML, pathName,
-                "assignableTasks", indentation);
+                "assignableTasks.xml", indentation);
        assignableTaskMarshaller.importFile();
    }

@ -130,7 +129,7 @@ class ImportHelper {
        TaskAssignmentMarshaller taskAssignmentMarshaller = new
                TaskAssignmentMarshaller();
        taskAssignmentMarshaller.prepare(Format.XML, pathName,
-                "taskAssignments", indentation);
+                "taskAssignments.xml", indentation);
        taskAssignmentMarshaller.importFile();
    }

@ -138,7 +137,7 @@ class ImportHelper {
        PermissionMarshaller permissionMarshaller = new
                PermissionMarshaller();
        permissionMarshaller.prepare(Format.XML, pathName,
-                "permissions", indentation);
+                "permissions.xml", indentation);
        permissionMarshaller.importFile();
    }