Source Code Cross Referenced for ConditionUtil.java in  » IDE-Netbeans » etl.project » org » netbeans » modules » sql » framework » model » utils » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » etl.project » org.netbeans.modules.sql.framework.model.utils 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


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 java.util.Iterator;
044:        import java.util.List;
045:        import java.util.Map;
046:
047:        import org.netbeans.modules.sql.framework.model.SQLCanvasObject;
048:        import org.netbeans.modules.sql.framework.model.SQLCondition;
049:        import org.netbeans.modules.sql.framework.model.SQLConnectableObject;
050:        import org.netbeans.modules.sql.framework.model.SQLDefinition;
051:        import org.netbeans.modules.sql.framework.model.SQLInputObject;
052:        import org.netbeans.modules.sql.framework.model.SQLObject;
053:        import org.netbeans.modules.sql.framework.parser.conditionparser.SQLConditionParser;
054:
055:        import com.sun.sql.framework.exception.BaseException;
056:
057:        /**
058:         * @author Ritesh Adval
059:         */
060:        public class ConditionUtil {
061:
062:            /**
063:             * Parses into a SQLObject the given condition string using information from the given
064:             * SQLDefinition.
065:             * 
066:             * @param text condition text to be parsed
067:             * @param def SQLDefinition
068:             * @return SQLObject modeling the parsed condition string in <code>text</code>
069:             * @throws Exception if error occurs during parsing
070:             */
071:            public static SQLObject parseCondition(String text,
072:                    SQLDefinition def) throws Exception {
073:                SQLConditionParser p = new SQLConditionParser();
074:                SQLParserUtil helper = new SQLParserUtil(def);
075:                p.setSQLParserUtil(helper);
076:                SQLObject obj = null;
077:                if (text != null && !text.trim().equals("")) {
078:                    obj = p.parse(text);
079:                }
080:                return obj;
081:            }
082:
083:            /**
084:             * Populates the given SQLCondition object using information from the given condition
085:             * string and SQLDefinition.
086:             * 
087:             * @param condition SQLCondition object to be populated
088:             * @param def SQLDefinition
089:             * @param text condition text to be parsed
090:             * @throws Exception if error occurs during parsing or object population
091:             */
092:            public static void populateCondition(SQLCondition condition,
093:                    SQLDefinition def, String text) throws Exception {
094:                SQLObject rootObj = parseCondition(text, def);
095:                if (rootObj != null && rootObj instanceof  SQLConnectableObject) {
096:                    SQLConnectableObject expObj = (SQLConnectableObject) rootObj;
097:                    populateExpressionObject(expObj, condition);
098:                }
099:            }
100:
101:            /**
102:             * Populates the given SQLCondition object using information from the given SQLObject
103:             * root.
104:             * 
105:             * @param condition SQLCondition object to be populated
106:             * @param rootObj root expression object
107:             * @throws Exception if error occurs during parsing or object population
108:             */
109:            public static void populateCondition(SQLCondition condition,
110:                    SQLObject rootObj) throws Exception {
111:                if (rootObj != null && rootObj instanceof  SQLConnectableObject) {
112:                    SQLConnectableObject expObj = (SQLConnectableObject) rootObj;
113:                    populateExpressionObject(expObj, condition);
114:                }
115:            }
116:
117:            private static void populateChildObject(SQLObject obj,
118:                    SQLCondition condition) throws BaseException {
119:                List childList = obj.getChildSQLObjects();
120:                Iterator it = childList.iterator();
121:
122:                while (it.hasNext()) {
123:                    SQLObject chldObj = (SQLObject) it.next();
124:                    if (chldObj instanceof  SQLConnectableObject) {
125:                        populateExpressionObject(
126:                                (SQLConnectableObject) chldObj, condition);
127:                    } else {
128:                        populateLeafObject(chldObj, condition);
129:                    }
130:                }
131:            }
132:
133:            private static void populateExpressionObject(
134:                    SQLConnectableObject expObj, SQLCondition condition)
135:                    throws BaseException {
136:                // add the expression object to condition
137:                condition.addObject(expObj);
138:
139:                // now go through the inputs of expression object and add them also in condition
140:                Map inputMap = expObj.getInputObjectMap();
141:                Iterator it = inputMap.keySet().iterator();
142:
143:                while (it.hasNext()) {
144:                    String argName = (String) it.next();
145:                    SQLInputObject inputObj = (SQLInputObject) inputMap
146:                            .get(argName);
147:                    SQLObject srcObj = inputObj.getSQLObject();
148:                    // if srcObj is a SQLCanvasObject then only we can add
149:                    // it to the condition. condition holds all SQLCanvasObject
150:                    // which can be linked.
151:                    // This srcObj may not be a SQLCanvasObject if it is
152:                    // a part of object like SQLLiteral for literal values
153:                    if (srcObj instanceof  SQLCanvasObject) {
154:                        if (srcObj instanceof  SQLConnectableObject) {
155:                            populateExpressionObject(
156:                                    (SQLConnectableObject) srcObj, condition);
157:                        } else {
158:                            populateLeafObject(srcObj, condition);
159:                        }
160:                    }
161:                }
162:
163:                populateChildObject(expObj, condition);
164:            }
165:
166:            private static void populateLeafObject(SQLObject obj,
167:                    SQLCondition condition) throws BaseException {
168:                condition.addObject(obj);
169:            }
170:
171:            /** Creates a new instance of ConditionUtil */
172:            private ConditionUtil() {
173:            }
174:        }
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