001: /* ====================================================================
002: * The Jcorporate Apache Style Software License, Version 1.2 05-07-2002
003: *
004: * Copyright (c) 1995-2002 Jcorporate Ltd. All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: *
010: * 1. Redistributions of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * 2. Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in
015: * the documentation and/or other materials provided with the
016: * distribution.
017: *
018: * 3. The end-user documentation included with the redistribution,
019: * if any, must include the following acknowledgment:
020: * "This product includes software developed by Jcorporate Ltd.
021: * (http://www.jcorporate.com/)."
022: * Alternately, this acknowledgment may appear in the software itself,
023: * if and wherever such third-party acknowledgments normally appear.
024: *
025: * 4. "Jcorporate" and product names such as "Expresso" must
026: * not be used to endorse or promote products derived from this
027: * software without prior written permission. For written permission,
028: * please contact info@jcorporate.com.
029: *
030: * 5. Products derived from this software may not be called "Expresso",
031: * or other Jcorporate product names; nor may "Expresso" or other
032: * Jcorporate product names appear in their name, without prior
033: * written permission of Jcorporate Ltd.
034: *
035: * 6. No product derived from this software may compete in the same
036: * market space, i.e. framework, without prior written permission
037: * of Jcorporate Ltd. For written permission, please contact
038: * partners@jcorporate.com.
039: *
040: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
041: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
042: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
043: * DISCLAIMED. IN NO EVENT SHALL JCORPORATE LTD OR ITS CONTRIBUTORS
044: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
045: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
046: * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
047: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
048: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
049: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
050: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
051: * SUCH DAMAGE.
052: * ====================================================================
053: *
054: * This software consists of voluntary contributions made by many
055: * individuals on behalf of the Jcorporate Ltd. Contributions back
056: * to the project(s) are encouraged when you make modifications.
057: * Please send them to support@jcorporate.com. For more information
058: * on Jcorporate Ltd. and its products, please see
059: * <http://www.jcorporate.com/>.
060: *
061: * Portions of this software are based upon other open source
062: * products and are subject to their respective licenses.
063: */
064:
065: package com.jcorporate.expresso.services.dbobj;
066:
067: import com.jcorporate.expresso.core.db.DBException;
068: import com.jcorporate.expresso.core.dbobj.DBObject;
069: import com.jcorporate.expresso.core.i18n.Messages;
070:
071: import java.util.Date;
072:
073: /*
074: * A ChangeLog object is used to record changes to other DBObjects.
075: * If logging is enabled, whenever a database change is
076: * made (add, update or delete), a ChangeLog object is written. For
077: * updates, the actual field being updated is noted. If more
078: * than one field is updated, more than one ChangeLog item is written.
079: *
080: * @version $Revision: 1.11 $ $Date: 2004/11/27 22:34:29 $
081: * @author Michael Nash
082: */
083:
084: public class ChangeLog extends DBObject {
085: /**
086: * Constructor
087: * @throws DBException upon construction error.
088: */
089: public ChangeLog() throws DBException {
090: super ();
091: } /* ChangeLog() */
092:
093: /**
094: * Override of DBObject.add() by setting the changetime to the current
095: * date.
096: * @throws DBException upon database creation error.
097: */
098: public synchronized void add() throws DBException {
099: /** @todo to make it consistent with the updated API replace
100: Date d = new Date();
101: String currDate = DateFormat.getDateTimeInstance(DateFormat.SHORT,
102: DateFormat.MEDIUM).format(d);
103: setField("ChangeTime", currDate);
104:
105: with:
106: *RD* Mon Jul 27 2004 */
107: setField("ChangeTime", new Date());
108: super .add();
109:
110: } /* add() */
111:
112: /**
113: * Initializes database setup fields.
114: * @throws DBException
115: * @throws DBException upon construction error.
116: */
117: protected synchronized void setupFields() throws DBException {
118: setTargetTable("CHANGELOGTWO");
119: addField("ChangeKey", "auto-inc", 0, false, "Changelog Key");
120: addKey("ChangeKey");
121:
122: addField("ObjectChanged", "varchar", 40, false,
123: "Object_Changed");
124: addField("RecordKey", "varchar", 150, false,
125: "Key_of_Changed_Object");
126: addField("Operation", "char", 1, false, "Operation_Code");
127:
128: /* (A)dd , (D)elete, (U)pdate */
129: addField("ChangedField", "varchar", 40, false, "Field_Changed");
130:
131: /* (if update) "ALL" for adds & deletes */
132: addField("ChangeTime", "datetime", 0, false, "Time_of_Change");
133:
134: // addKey("ObjectChanged");
135: // addKey("RecordKey");
136: // addKey("Operation");
137: // addKey("ChangedField");
138: // addKey("ChangeTime");
139:
140: addField("OldValue", "varchar", 255, true, "Old_Field_Value");
141: addField("NewValue", "varchar", 255, true, "New_Field_Value");
142: } /* setupFields() */
143:
144: /**
145: * Override update to throw exception immediately - no updates allowed
146: * @throws DBException Always.
147: */
148: public synchronized void update() throws DBException {
149: throw new DBException(Messages
150: .getString("Updates_to_ChangeLog_object_not_permitted"));
151: }
152:
153: }
154:
155: /* ChangeLog */
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