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
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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
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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 1997-2007 Sun
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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
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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
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040: */
041:
042: package org.netbeans.modules.sql.framework.codegen;
043:
044: import java.util.HashMap;
045: import java.util.Iterator;
046: import java.util.Map;
047: import org.netbeans.modules.sql.framework.codegen.base.GeneratorHelper;
048: import org.netbeans.modules.sql.framework.model.SQLObject;
049: import org.netbeans.modules.sql.framework.model.SQLOperator;
050: import com.sun.sql.framework.exception.BaseException;
051:
052: /**
053: * @author Ritesh Adval
054: * @author Ahimanikya Satapathy
055: * @version $Revision$
056: */
057: public abstract class AbstractOperatorGeneratorFactory extends
058: AbstractGenerator {
059:
060: private Map<String, Generator> operatorToGeneratorMap = null;
061: private Generator delegate;
062:
063: public String generate(SQLObject obj, StatementContext context)
064: throws BaseException {
065: if (operatorToGeneratorMap == null) {
066: createOperatorSpecificGenerator();
067: //create delegate
068: delegate = createDefaultOperatorGenerator();
069: }
070:
071: SQLOperator operator = (SQLOperator) obj;
072: // try to get operator specific generator
073: Generator generator = operatorToGeneratorMap.get(operator
074: .getOperatorType());
075: // if we do not have operator specific generator then use the delegate as
076: // a default
077: if (generator == null) {
078: generator = delegate;
079: }
080:
081: return generator.generate(obj, context);
082: }
083:
084: private void createOperatorSpecificGenerator() throws BaseException {
085: operatorToGeneratorMap = new HashMap<String, Generator>();
086:
087: Map opToEvalClassMap = initializeOperatorSpecificGenerator();
088: Iterator it = opToEvalClassMap.keySet().iterator();
089: while (it.hasNext()) {
090: String opName = (String) it.next();
091: String className = (String) opToEvalClassMap.get(opName);
092:
093: Generator generator = GeneratorHelper.create(className,
094: this .getGeneratorFactory());
095: operatorToGeneratorMap.put(opName, generator);
096: }
097: }
098:
099: public abstract Map<String, String> initializeOperatorSpecificGenerator();
100:
101: Generator createDefaultOperatorGenerator() {
102: Generator generator = new OperatorGenerator();
103: generator.setGeneratorFactory(this.getGeneratorFactory());
104: return generator;
105: }
106: }
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