Source Code Cross Referenced for MQLRelationalDataComponent.java in  » Report » pentaho-report » org » pentaho » plugin » mql » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Report » pentaho report » org.pentaho.plugin.mql 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2007 Pentaho Corporation.  All rights reserved.
003:         * This software was developed by Pentaho Corporation and is provided under the terms 
004:         * of the Mozilla Public License, Version 1.1, or any later version. You may not use 
005:         * this file except in compliance with the license. If you need a copy of the license, 
006:         * please go to http://www.mozilla.org/MPL/MPL-1.1.txt. The Original Code is the Pentaho 
007:         * BI Platform.  The Initial Developer is Pentaho Corporation.
008:         *
009:         * Software distributed under the Mozilla Public License is distributed on an "AS IS" 
010:         * basis, WITHOUT WARRANTY OF ANY KIND, either express or  implied. Please refer to 
011:         * the license for the specific language governing your rights and limitations.
012:         */
013:        package org.pentaho.plugin.mql;
014:
015:        import java.sql.SQLException;
016:        import java.util.Date;
017:
018:        import org.apache.commons.logging.Log;
019:        import org.apache.commons.logging.LogFactory;
020:        import org.pentaho.actionsequence.dom.IActionInputValueProvider;
021:        import org.pentaho.actionsequence.dom.actions.MQLAction;
022:        import org.pentaho.commons.connection.IPentahoConnection;
023:        import org.pentaho.commons.connection.IPentahoMetaData;
024:        import org.pentaho.commons.connection.IPentahoResultSet;
025:        import org.pentaho.core.audit.MessageTypes;
026:        import org.pentaho.core.system.PentahoSystem;
027:        import org.pentaho.data.PentahoConnectionFactory;
028:        import org.pentaho.data.connection.sql.SQLConnection;
029:        import org.pentaho.data.connection.sql.SQLResultSet;
030:        import org.pentaho.di.core.database.DatabaseInterface;
031:        import org.pentaho.di.core.database.DatabaseMeta;
032:        import org.pentaho.messages.Messages;
033:        import org.pentaho.messages.util.LocaleHelper;
034:        import org.pentaho.plugin.sql.SQLLookupRule;
035:        import org.pentaho.pms.core.exception.PentahoMetadataException;
036:        import org.pentaho.pms.factory.CwmSchemaFactoryInterface;
037:        import org.pentaho.pms.mql.MQLQuery;
038:        import org.pentaho.pms.mql.MQLQueryFactory;
039:        import org.pentaho.pms.mql.MappedQuery;
040:
041:        public class MQLRelationalDataComponent extends SQLLookupRule {
042:
043:            private static final long serialVersionUID = -6376955619869902045L;
044:
045:            private MQLQuery mqlQuery;
046:            private MappedQuery mappedQuery;
047:
048:            // if true, skip the attempt to load the metadata source within the 
049:            // getConnection() method.  This is used as part of the detection 
050:            // and overriding of the metadata.xmi database dialect.
051:            private boolean skipMetadataDatasource = false;
052:
053:            public MQLQuery getMqlQuery() {
054:                return mqlQuery;
055:            }
056:
057:            public Log getLogger() {
058:                return LogFactory.getLog(MQLRelationalDataComponent.class);
059:            }
060:
061:            private boolean initialize() {
062:                return true;
063:            }
064:
065:            public boolean validateAction() {
066:
067:                boolean result = true;
068:                if (!(getActionDefinition() instanceof  MQLAction)) {
069:                    error(Messages
070:                            .getErrorString(
071:                                    "ComponentBase.ERROR_0001_UNKNOWN_ACTION_TYPE", getActionDefinition().getElement().asXML())); //$NON-NLS-1$
072:                    result = false;
073:                } else if (!initialize()) {
074:                    result = false;
075:                } else {
076:                    MQLAction mqlAction = (MQLAction) getActionDefinition();
077:                    IActionInputValueProvider query = mqlAction.getQuery();
078:                    result = (query != IActionInputValueProvider.NULL_INPUT);
079:                }
080:
081:                return result;
082:            }
083:
084:            /**
085:             * makes the necessary calls to generate the SQL query based on the MQL XML provided.
086:             * 
087:             * @return sql
088:             */
089:            public String getQuery() {
090:                MQLAction mqlAction = (MQLAction) getActionDefinition();
091:                String mql = mqlAction.getQuery().getStringValue();
092:                String mqlQueryClassName = mqlAction.getMqlQueryClassName()
093:                        .getStringValue();
094:                if (mql != null) {
095:                    if (debug) {
096:                        debug(Messages
097:                                .getString(
098:                                        "MQLRelationalDataComponent.DEBUG_DISPLAY_MQL", mql)); //$NON-NLS-1$
099:                    }
100:
101:                    //GEM PMD-175 Display names no longer a legit param for this ocmponent
102:                    // boolean displayNames = this.getInputBooleanValue("display-names", true); //$NON-NLS-1$
103:
104:                    MetadataPublisher.loadMetadata(getSolutionName(),
105:                            getSession(), false);
106:                    CwmSchemaFactoryInterface cwmSchemaFactory = (CwmSchemaFactoryInterface) PentahoSystem
107:                            .getObject(getSession(), "ICwmSchemaFactory"); //$NON-NLS-1$
108:                    try {
109:                        if (mqlQueryClassName != null) {
110:                            mqlQuery = MQLQueryFactory.getMQLQuery(
111:                                    mqlQueryClassName, mql, null, LocaleHelper
112:                                            .getLocale().toString(),
113:                                    cwmSchemaFactory);
114:                        } else {
115:                            mqlQuery = MQLQueryFactory.getMQLQuery(mql, null,
116:                                    LocaleHelper.getLocale().toString(),
117:                                    cwmSchemaFactory);
118:                        }
119:
120:                        // detect the actual db dialect and apply it to the MQLQuery if different from the XMI dialect
121:                        if (!mqlAction.getForceDbDialect().getBooleanValue(
122:                                false)) {
123:                            // retrieve a temporary connection to determine if a dialect change is necessary
124:                            // for generating the MQL Query.
125:                            SQLConnection tempConnection = (SQLConnection) getConnection();
126:                            try {
127:
128:                                // if the connection type is not of the current dialect, regenerate the query
129:                                DatabaseInterface di = getDatabaseInterface(tempConnection);
130:
131:                                if (di != null
132:                                        && mqlQuery.getDatabaseMeta()
133:                                                .getDatabaseType() != di
134:                                                .getDatabaseType()) {
135:                                    // we need to reinitialize our mqlQuery object and reset the query.
136:                                    // note that using this di object wipes out connection info
137:                                    DatabaseMeta meta = (DatabaseMeta) mqlQuery
138:                                            .getDatabaseMeta().clone();
139:
140:                                    DatabaseInterface di2 = (DatabaseInterface) di
141:                                            .clone();
142:
143:                                    di2.setAccessType(mqlQuery
144:                                            .getDatabaseMeta().getAccessType());
145:                                    di2.setDatabaseName(mqlQuery
146:                                            .getDatabaseMeta()
147:                                            .getDatabaseName());
148:
149:                                    meta.setDatabaseInterface(di2);
150:                                    if (mqlQueryClassName != null) {
151:                                        mqlQuery = MQLQueryFactory.getMQLQuery(
152:                                                mqlQueryClassName, mql, meta,
153:                                                LocaleHelper.getLocale()
154:                                                        .toString(),
155:                                                cwmSchemaFactory);
156:                                    } else {
157:                                        mqlQuery = MQLQueryFactory.getMQLQuery(
158:                                                mql, meta,
159:                                                LocaleHelper.getLocale()
160:                                                        .toString(),
161:                                                cwmSchemaFactory);
162:                                    }
163:                                    // don't attempt to use the metadata's connection info when retrieving a connection in the
164:                                    // future. because of the dialect change, the connection info is now invalid.
165:                                    skipMetadataDatasource = true;
166:                                }
167:                            } finally {
168:                                tempConnection.close();
169:                            }
170:                        }
171:
172:                        if (mqlAction.getDisableDistinct() != IActionInputValueProvider.NULL_INPUT) {
173:                            mqlQuery.setDisableDistinct(mqlAction
174:                                    .getDisableDistinct().getBooleanValue()
175:                                    .booleanValue());
176:                        }
177:
178:                        mappedQuery = mqlQuery.getQuery();
179:                        String sqlQuery = mappedQuery.getQuery();
180:                        if (debug) {
181:                            debug(Messages
182:                                    .getString(
183:                                            "MQLRelationalDataComponent.DEBUG_DISPLAY_SQL", sqlQuery)); //$NON-NLS-1$
184:                        }
185:                        return sqlQuery;
186:                    } catch (PentahoMetadataException e) {
187:                        error(
188:                                Messages
189:                                        .getErrorString(
190:                                                "SQLBaseComponent.ERROR_0006_EXECUTE_FAILED", getActionName()), e); //$NON-NLS-1$
191:                    }
192:                } else {
193:                    error(Messages
194:                            .getErrorString(
195:                                    "MQLRelationalDataComponent.ERROR_0001_QUERY_XML_EMPTY", getActionName())); //$NON-NLS-1$
196:                }
197:                return null;
198:            }
199:
200:            public boolean executeAction() {
201:
202:                long start = new Date().getTime();
203:
204:                boolean result = super .executeAction();
205:
206:                MQLAction actionDefinition = (MQLAction) getActionDefinition();
207:
208:                long end = new Date().getTime();
209:                // Fix for BISERVER-459 - MQL can be too large for the audit message column.
210:                // audit(MessageTypes.INSTANCE_ATTRIBUTE, "metadata query", mql, (int) (end - start)); //$NON-NLS-1$
211:                //
212:                audit(
213:                        MessageTypes.INSTANCE_ATTRIBUTE,
214:                        "metadata query action sequence", this .getActionName(), (int) (end - start)); //$NON-NLS-1$
215:                // Use debug logging instead
216:                trace(actionDefinition.getQuery().getStringValue());
217:                return result;
218:
219:            }
220:
221:            protected IPentahoConnection getConnection() {
222:                // use the connection specified in the query.
223:
224:                IPentahoConnection localConnection = null;
225:                if (mqlQuery != null) {
226:                    try {
227:                        DatabaseMeta databaseMeta = mqlQuery.getDatabaseMeta();
228:                        if (databaseMeta.getAccessType() == DatabaseMeta.TYPE_ACCESS_JNDI) {
229:                            String jndiName = databaseMeta.getDatabaseName();
230:                            if (jndiName != null) {
231:                                localConnection = PentahoConnectionFactory
232:                                        .getConnection(
233:                                                IPentahoConnection.SQL_DATASOURCE,
234:                                                jndiName, this );
235:                            }
236:                        }
237:                        if (localConnection == null && !skipMetadataDatasource) {
238:                            String driver = databaseMeta.getDriverClass();
239:                            String userId = databaseMeta.getUsername();
240:                            String password = databaseMeta.getPassword();
241:                            String connectionInfo = databaseMeta.getURL();
242:                            if (driver == null && connectionInfo == null) {
243:                                // TODO raise an error
244:                            }
245:                            localConnection = PentahoConnectionFactory
246:                                    .getConnection(
247:                                            IPentahoConnection.SQL_DATASOURCE,
248:                                            driver, connectionInfo, userId,
249:                                            password, this );
250:                        }
251:                        // try the parent to allow the connection to be overridden
252:                        localConnection = getConnection(localConnection);
253:                        return localConnection;
254:                    } catch (Exception e) {
255:                        error(
256:                                Messages
257:                                        .getErrorString(
258:                                                "SQLBaseComponent.ERROR_0006_EXECUTE_FAILED", getActionName()), e); //$NON-NLS-1$
259:                    }
260:                }
261:                return null;
262:            }
263:
264:            /**
265:             * determines the PDI database interface of a given connection object
266:             * 
267:             * @param conn
268:             * @return
269:             */
270:            protected DatabaseInterface getDatabaseInterface(SQLConnection conn) {
271:                String prod = null;
272:                try {
273:                    prod = conn.getNativeConnection().getMetaData()
274:                            .getDatabaseProductName();
275:
276:                    if (prod == null) {
277:                        return null;
278:                    }
279:
280:                    prod = prod.toLowerCase();
281:
282:                    // special case to map hsql to hypersonic
283:                    if (prod.indexOf("hsql") >= 0) { //$NON-NLS-1$
284:                        prod = "hypersonic"; //$NON-NLS-1$
285:                    }
286:
287:                    // look through all available database dialects for a match
288:                    for (int i = 0; i < DatabaseMeta.getDatabaseInterfaces().length; i++) {
289:                        String typeDesc = DatabaseMeta.getDatabaseInterfaces()[i]
290:                                .getDatabaseTypeDesc().toLowerCase();
291:                        if (prod.indexOf(typeDesc) >= 0) {
292:                            return DatabaseMeta.getDatabaseInterfaces()[i];
293:                        }
294:                    }
295:
296:                    warn(Messages
297:                            .getString(
298:                                    "MQLRelationalDataComponent.WARN_0001_NO_DIALECT_DETECTED", prod)); //$NON-NLS-1$
299:
300:                } catch (SQLException e) {
301:                    warn(
302:                            Messages
303:                                    .getString(
304:                                            "MQLRelationalDataComponent.WARN_0002_DIALECT_EXCEPTION", prod), e); //$NON-NLS-1$
305:                }
306:                return null;
307:            }
308:
309:            protected IPentahoMetaData getMetadata(IPentahoResultSet resultSet,
310:                    boolean live) {
311:                IPentahoMetaData metadata = mappedQuery
312:                        .generateMetadata(resultSet.getMetaData());
313:                ((SQLResultSet) resultSet).setMetaData(metadata);
314:                return metadata;
315:
316:            }
317:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.