001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.dbschema;
043:
044: /** Describes a unique key in a table.
045: */
046: public final class UniqueKeyElement extends KeyElement {
047: /** the index to which this element is associated */
048: private IndexElement _associatedIndex;
049:
050: /** Creates a new unique key element represented in memory.
051: */
052: public UniqueKeyElement() {
053: this (new Memory(), null, null);
054: }
055:
056: /** Creates a new unique key element.
057: * @param impl the pluggable implementation
058: * @param declaringTable declaring table of this unique key, or <code>null</code>
059: * @param associatedIndex the associated index
060: */
061: public UniqueKeyElement(Impl impl, TableElement declaringTable,
062: IndexElement associatedIndex) {
063: super (impl, declaringTable);
064:
065: _associatedIndex = associatedIndex;
066: }
067:
068: /** Returns the implementation for the unique key.
069: * @return implementation for the unique key
070: */
071: final Impl getUniqueKeyImpl() {
072: return (Impl) getElementImpl();
073: }
074:
075: /** Gets the associated index of the unique key.
076: * @return the associated index for this unique key, <code>null</code>
077: * if unattached
078: */
079: public IndexElement getAssociatedIndex() {
080: return _associatedIndex;
081: }
082:
083: /** Sets the associated index of the unique key.
084: * @param the associated index for this unique key
085: * @throws DBException if impossible
086: */
087: public void setAssociatedIndex(IndexElement index)
088: throws DBException {
089: _associatedIndex = index;
090: }
091:
092: /** Gets the primary key flag of the unique key.
093: * @return true if this unique key is a primary key, false otherwise
094: */
095: public boolean isPrimaryKey() {
096: return getUniqueKeyImpl().isPrimaryKey();
097: }
098:
099: /** Sets the primary key flag of the unique key.
100: * @param flag the flag
101: * @throws DBException if impossible
102: */
103: public void setPrimaryKey(boolean flag) throws DBException {
104: getUniqueKeyImpl().setPrimaryKey(flag);
105: }
106:
107: /** Implementation of a unique key element.
108: * @see KeyElement
109: */
110: public interface Impl extends KeyElement.Impl {
111: /** Gets the primary key flag of the unique key.
112: * @return true if this unique key is a primary key, false otherwise
113: */
114: public boolean isPrimaryKey();
115:
116: /** Sets the primary key flag of the unique key.
117: * @param flag the flag
118: * @throws DBException if impossible
119: */
120: public void setPrimaryKey(boolean flag) throws DBException;
121: }
122:
123: static class Memory extends KeyElement.Memory implements Impl {
124: /** Primary key flag of key */
125: private boolean _pk;
126:
127: /** Default constructor
128: */
129: Memory() {
130: _pk = false;
131: }
132:
133: /** Copy constructor.
134: * @param column the object from which to read values
135: */
136: Memory(UniqueKeyElement key) {
137: super (key);
138: _pk = key.isPrimaryKey();
139: }
140:
141: /** Gets the primary key flag of the unique key.
142: * @return true if this unique key is a primary key, false otherwise
143: */
144: public boolean isPrimaryKey() {
145: return _pk;
146: }
147:
148: /** Sets the primary key flag of the unique key.
149: * @param flag the flag
150: * @throws DBException if impossible
151: */
152: public void setPrimaryKey(boolean flag) throws DBException {
153: boolean old = _pk;
154:
155: _pk = flag;
156: firePropertyChange(PROP_PK, Boolean.valueOf(old), Boolean
157: .valueOf(flag));
158: }
159: }
160: }
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