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 1997-2007 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: package org.netbeans.modules.sql.framework.model.utils;
042:
043: import org.netbeans.modules.sql.framework.codegen.DB;
044: import org.netbeans.modules.sql.framework.codegen.DBFactory;
045: import org.netbeans.modules.sql.framework.codegen.StatementContext;
046: import org.netbeans.modules.sql.framework.model.SQLObject;
047: import com.sun.sql.framework.exception.BaseException;
048: import net.java.hulp.i18n.Logger;
049: import org.netbeans.modules.etl.logger.Localizer;
050: import org.netbeans.modules.etl.logger.LogUtil;
051: import org.netbeans.modules.sql.framework.codegen.AbstractGeneratorFactory;
052:
053: /**
054: * @author Ritesh Adval
055: * @version $Revision$
056: */
057: public class GeneratorUtil {
058:
059: private static int currentDbType = DB.BASEDB;
060: private static GeneratorUtil instance;
061: private static transient final Logger mLogger = LogUtil
062: .getLogger(GeneratorUtil.class.getName());
063: private static transient final Localizer mLoc = Localizer.get();
064:
065: /**
066: * Gets an instance of GeneratorUtil.
067: *
068: * @return instance of GeneratorUtil
069: */
070: public static GeneratorUtil getInstance() throws BaseException {
071: if (instance == null) {
072: instance = new GeneratorUtil();
073: }
074:
075: return instance;
076: }
077:
078: private DB db;
079: private AbstractGeneratorFactory genFactory;
080: private StatementContext stmtContext = new StatementContext();
081:
082: /** Creates a new instance of GeneratorUtil */
083: private GeneratorUtil() throws BaseException {
084: db = DBFactory.getInstance().getDatabase(currentDbType);
085: genFactory = db.getGeneratorFactory();
086: }
087:
088: /**
089: * Gets SQL expression (or fragment thereof) that can be generated from the given
090: * SQLObject instance.
091: *
092: * @param sqlObj SQLObject instance from which SQL expression (or fragment) can be
093: * generated
094: * @return generated SQL expression, or empty string if no expression could be
095: * generated.
096: */
097: public String getEvaluatedString(SQLObject sqlObj) {
098: String sql = "";
099: try {
100: sql = genFactory.generate(sqlObj, stmtContext);
101: } catch (Exception ex) {
102: mLogger.errorNoloc(mLoc.t(
103: "PRSR123: Could not evaulate object {0}in{1}",
104: sqlObj.getDisplayName(), GeneratorUtil.class
105: .getName()), ex);
106:
107: }
108: return sql;
109: }
110:
111: /**
112: * Sets whether column alias should be used by the Generator or not, while evaluating
113: * columns and tables.
114: *
115: * @param aliasUsed boolean
116: */
117: public void setColumnAliasUsed(boolean aliasUsed) {
118: stmtContext.setUseSourceColumnAliasName(aliasUsed);
119: stmtContext.setUseTargetColumnAliasName(aliasUsed);
120: }
121:
122: /**
123: * Sets whether table alias should be used by the Generator or not, while evaluating
124: * columns and tables.
125: *
126: * @param aliasUsed boolean
127: */
128: public void setTableAliasUsed(boolean aliasUsed) {
129: stmtContext.setUseSourceTableAliasName(aliasUsed);
130: stmtContext.setUseTargetTableAliasName(aliasUsed);
131: }
132: }
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