119 lines
3.8 KiB
Java
Executable File
119 lines
3.8 KiB
Java
Executable File
/*
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* Copyright (C) 2003-2004 Red Hat Inc. All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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package com.arsdigita.metadata;
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import com.arsdigita.persistence.SessionManager;
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import com.redhat.persistence.metadata.Column;
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import com.redhat.persistence.metadata.ForeignKey;
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import com.redhat.persistence.metadata.ObjectType;
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import com.redhat.persistence.metadata.Property;
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import com.redhat.persistence.metadata.Table;
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import com.redhat.persistence.metadata.UniqueKey;
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/**
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* DynamicElement
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*
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* @author Rafael H. Schloming <rhs@mit.edu>
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* @version $Id: DynamicElement.java 287 2005-02-22 00:29:02Z sskracic $
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**/
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abstract class DynamicElement {
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/**
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* This takes an ObjectType name and model, and generates a unique
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* table name that can be used to store the object type.
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*
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* @param type The object type.
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* @return a unique table name that is used to store instance data
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* for the object type
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*/
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static String generateTableName(ObjectType type) {
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return type.getName();
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}
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/**
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* This takes a table name and a Property to generate a unique
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* column name.
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*
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* @param table The table containing the column.
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* @param name The proposed name of the column.
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* @return a unique column name that will be used to store this property
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*/
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static String generateColumnName(Table table, String name) {
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return name;
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}
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/**
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* Determines a unique name for a mapping table for a particular
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* role reference and object type.
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*
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* @param prop The property being stored in the table.
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* @return a unique table name
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*/
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static String generateTableName(Property prop) {
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return generateTableName(prop.getContainer()) + "_" + prop.getName();
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}
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static ForeignKey fk(Table table, String prefix, UniqueKey uk) {
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Column[] cols = new Column[uk.getColumns().length];
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for (int i = 0; i < cols.length; i++) {
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Column col = uk.getColumns()[i];
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String name;
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if (prefix == null) {
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name = col.getName();
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} else {
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name = prefix + "_" + col.getName();
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}
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String columnName = generateColumnName(table, name);
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cols[i] = new Column(columnName, col.getType(), col.getSize(),
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col.getScale(), true);
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table.addColumn(cols[i]);
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}
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return new ForeignKey(table, null, cols, uk);
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}
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static ObjectType type
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(com.arsdigita.persistence.metadata.CompoundType type) {
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if (type == null) { return null; }
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return SessionManager.getMetadataRoot().getRoot().getObjectType
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(type.getQualifiedName());
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}
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static com.arsdigita.persistence.metadata.ObjectType type
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(ObjectType type) {
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if (type == null) { return null; }
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return SessionManager.getMetadataRoot().getObjectType
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(type.getQualifiedName());
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}
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static Property property
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(com.arsdigita.persistence.metadata.Property prop) {
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if (prop == null) { return null; }
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return type(prop.getContainer()).getProperty(prop.getName());
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}
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static com.arsdigita.persistence.metadata.Property property
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(Property prop) {
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if (prop == null) { return null; }
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return type(prop.getContainer()).getProperty(prop.getName());
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}
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}
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