001: /*
002: * ====================================================================
003: * JAFFA - Java Application Framework For All
004: *
005: * Copyright (C) 2002 JAFFA Development Group
006: *
007: * This library is free software; you can redistribute it and/or
008: * modify it under the terms of the GNU Lesser General Public
009: * License as published by the Free Software Foundation; either
010: * version 2.1 of the License, or (at your option) any later version.
011: *
012: * This library is distributed in the hope that it will be useful,
013: * but WITHOUT ANY WARRANTY; without even the implied warranty of
014: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015: * Lesser General Public License for more details.
016: *
017: * You should have received a copy of the GNU Lesser General Public
018: * License along with this library; if not, write to the Free Software
019: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020: *
021: * Redistribution and use of this software and associated documentation ("Software"),
022: * with or without modification, are permitted provided that the following conditions are met:
023: * 1. Redistributions of source code must retain copyright statements and notices.
024: * Redistributions must also contain a copy of this document.
025: * 2. Redistributions in binary form must reproduce the above copyright notice,
026: * this list of conditions and the following disclaimer in the documentation
027: * and/or other materials provided with the distribution.
028: * 3. The name "JAFFA" must not be used to endorse or promote products derived from
029: * this Software without prior written permission. For written permission,
030: * please contact mail to: jaffagroup@yahoo.com.
031: * 4. Products derived from this Software may not be called "JAFFA" nor may "JAFFA"
032: * appear in their names without prior written permission.
033: * 5. Due credit should be given to the JAFFA Project (http://jaffa.sourceforge.net).
034: *
035: * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046: * SUCH DAMAGE.
047: * ====================================================================
048: */
049:
050: package org.jaffa.persistence.engines.jdbcengine.configservice;
051:
052: import org.apache.log4j.Logger;
053: import java.util.*;
054: import org.xml.sax.Attributes;
055: import org.xml.sax.helpers.DefaultHandler;
056:
057: /** This is the handler for the mapping files. It parses the file and creates an appropriate ClassMetaData object.
058: */
059: public class MappingParser extends DefaultHandler {
060: private static final Logger log = Logger
061: .getLogger(MappingParser.class);
062: private static final String CLASS = "class";
063: private static final String NAME = "name";
064: private static final String FIELD = "field";
065: private static final String USE_MEMBER = "use-member";
066: private static final String PRIMARY_KEY = "primary-key";
067: private static final String AUTOGEN_KEY = "autogen-key";
068: private static final String TRUE = "true";
069: private static final String TYPE = "type";
070: private static final String MAP_TO = "map-to";
071: private static final String TABLE = "table";
072: private static final String SQL = "sql";
073:
074: private ClassMetaData m_meta;
075: private String m_fieldName;
076:
077: /** Receive notification of the start of an element.
078: * @param uri The uri.
079: * @param sName The local name (without prefix), or the empty string if Namespace processing is not being performed.
080: * @param qName The qualified name (with prefix), or the empty string if qualified names are not available.
081: * @param atts The specified or defaulted attributes
082: */
083: public void startElement(String uri, String sName, String qName,
084: Attributes atts) {
085: if (sName.equals(CLASS)) {
086: m_meta = new ClassMetaData(atts.getValue(NAME));
087: } else if (sName.equals(FIELD)) {
088: m_fieldName = atts.getValue(NAME);
089: if ((atts.getValue(PRIMARY_KEY)) != null) {
090: if ((atts.getValue(PRIMARY_KEY)).equals(TRUE))
091: m_meta.addKeyField(m_fieldName,
092: atts.getValue(TYPE), TRUE.equals(atts
093: .getValue(AUTOGEN_KEY)));
094: else
095: m_meta.addAttribute(m_fieldName, atts
096: .getValue(TYPE));
097: } else {
098: m_meta.addAttribute(m_fieldName, atts.getValue(TYPE));
099: }
100: String memberName = atts.getValue(USE_MEMBER);
101: if (memberName != null)
102: m_meta.addMember(m_fieldName, memberName);
103: } else if (sName.equals(MAP_TO)) {
104: m_meta.setTable(atts.getValue(TABLE));
105: } else if (sName.equals(SQL)) {
106: m_meta.addSqlName(m_fieldName, atts.getValue(NAME));
107: m_meta.addSqlType(m_fieldName, atts.getValue(TYPE)
108: .toUpperCase());
109: }
110: }
111:
112: /** Returns a ClassMetaData object corresponding to a mapping file.
113: * @return a ClassMetaData object corresponding to a mapping file.
114: */
115: public ClassMetaData getMetaData() {
116: return m_meta;
117: }
118: }
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