Source Code Cross Referenced for GenericLanguageConnectionFactory.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » sql » conn » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.sql.conn 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:
003:           Derby - Class org.apache.derby.impl.sql.conn.GenericLanguageConnectionFactory
004:
005:           Licensed to the Apache Software Foundation (ASF) under one or more
006:           contributor license agreements.  See the NOTICE file distributed with
007:           this work for additional information regarding copyright ownership.
008:           The ASF licenses this file to you under the Apache License, Version 2.0
009:           (the "License"); you may not use this file except in compliance with
010:           the License.  You may obtain a copy of the License at
011:
012:              http://www.apache.org/licenses/LICENSE-2.0
013:
014:           Unless required by applicable law or agreed to in writing, software
015:           distributed under the License is distributed on an "AS IS" BASIS,
016:           WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017:           See the License for the specific language governing permissions and
018:           limitations under the License.
019:
020:         */
021:
022:        package org.apache.derby.impl.sql.conn;
023:
024:        import org.apache.derby.iapi.reference.JDBC20Translation;
025:        import org.apache.derby.iapi.reference.JDBC30Translation;
026:
027:        import org.apache.derby.iapi.sql.conn.LanguageConnectionFactory;
028:        import org.apache.derby.iapi.sql.conn.LanguageConnectionContext;
029:        import org.apache.derby.iapi.sql.compile.CompilerContext;
030:
031:        import org.apache.derby.iapi.sql.LanguageFactory;
032:        import org.apache.derby.impl.sql.GenericStatement;
033:
034:        import org.apache.derby.impl.sql.conn.CachedStatement;
035:
036:        import org.apache.derby.iapi.services.uuid.UUIDFactory;
037:        import org.apache.derby.iapi.services.compiler.JavaFactory;
038:        import org.apache.derby.iapi.services.loader.ClassFactory;
039:
040:        import org.apache.derby.iapi.db.Database;
041:
042:        import org.apache.derby.iapi.store.access.TransactionController;
043:
044:        import org.apache.derby.iapi.sql.compile.TypeCompilerFactory;
045:
046:        import org.apache.derby.iapi.error.StandardException;
047:
048:        import org.apache.derby.iapi.sql.compile.NodeFactory;
049:        import org.apache.derby.iapi.sql.compile.Parser;
050:
051:        import org.apache.derby.iapi.sql.Activation;
052:
053:        import org.apache.derby.iapi.store.access.AccessFactory;
054:        import org.apache.derby.iapi.services.property.PropertyFactory;
055:
056:        import org.apache.derby.iapi.sql.Statement;
057:        import org.apache.derby.iapi.sql.compile.OptimizerFactory;
058:        import org.apache.derby.iapi.sql.dictionary.DataDictionary;
059:        import org.apache.derby.iapi.types.DataValueFactory;
060:        import org.apache.derby.iapi.sql.execute.ExecutionFactory;
061:        import org.apache.derby.iapi.sql.dictionary.SchemaDescriptor;
062:
063:        import org.apache.derby.iapi.services.sanity.SanityManager;
064:
065:        import org.apache.derby.iapi.services.monitor.Monitor;
066:        import org.apache.derby.iapi.services.monitor.ModuleControl;
067:        import org.apache.derby.iapi.services.monitor.ModuleSupportable;
068:        import org.apache.derby.iapi.services.monitor.ModuleFactory;
069:        import org.apache.derby.iapi.services.context.ContextManager;
070:
071:        import org.apache.derby.iapi.services.cache.CacheFactory;
072:        import org.apache.derby.iapi.services.cache.CacheManager;
073:        import org.apache.derby.iapi.services.cache.CacheableFactory;
074:        import org.apache.derby.iapi.services.cache.Cacheable;
075:
076:        import org.apache.derby.iapi.services.property.PropertyUtil;
077:        import org.apache.derby.iapi.services.property.PropertySetCallback;
078:
079:        import org.apache.derby.iapi.services.i18n.LocaleFinder;
080:        import org.apache.derby.iapi.reference.SQLState;
081:        import org.apache.derby.iapi.reference.Property;
082:        import org.apache.derby.iapi.reference.EngineType;
083:
084:        import java.util.Properties;
085:        import java.util.Locale;
086:        import java.util.Dictionary;
087:        import java.io.Serializable;
088:        import org.apache.derby.iapi.util.IdUtil;
089:        import org.apache.derby.iapi.services.daemon.Serviceable;
090:        import org.apache.derby.iapi.util.StringUtil;
091:
092:        /**
093:         * LanguageConnectionFactory generates all of the items
094:         * a language system needs that is specific to a particular
095:         * connection. Alot of these are other factories.
096:         *
097:         * @author ames
098:         */
099:        public class GenericLanguageConnectionFactory implements 
100:                LanguageConnectionFactory, CacheableFactory,
101:                PropertySetCallback, ModuleControl, ModuleSupportable {
102:
103:            /*
104:            	fields
105:             */
106:            protected DataDictionary dd;
107:            private ExecutionFactory ef;
108:            private OptimizerFactory of;
109:            private TypeCompilerFactory tcf;
110:            private DataValueFactory dvf;
111:            private UUIDFactory uuidFactory;
112:            private JavaFactory javaFactory;
113:            private ClassFactory classFactory;
114:            private NodeFactory nodeFactory;
115:            private AccessFactory af;
116:            private PropertyFactory pf;
117:
118:            private int nextLCCInstanceNumber;
119:
120:            /*
121:              for caching prepared statements 
122:             */
123:            private int cacheSize = org.apache.derby.iapi.reference.Property.STATEMENT_CACHE_SIZE_DEFAULT;
124:            private CacheManager singleStatementCache;
125:
126:            /*
127:               constructor
128:             */
129:            public GenericLanguageConnectionFactory() {
130:            }
131:
132:            /*
133:               LanguageConnectionFactory interface
134:             */
135:
136:            /*
137:            	these are the methods that do real work, not just look for factories
138:             */
139:
140:            /**
141:            	Get a Statement for the connection
142:            	@param compilationSchema schema
143:            	@param statementText the text for the statement
144:            	@param forReadOnly if concurrency is CONCUR_READ_ONLY
145:            	@return	The Statement
146:             */
147:            public Statement getStatement(SchemaDescriptor compilationSchema,
148:                    String statementText, boolean forReadOnly) {
149:                return new GenericStatement(compilationSchema, statementText,
150:                        forReadOnly);
151:            }
152:
153:            /**
154:            	Get a LanguageConnectionContext. this holds things
155:            	we want to remember about activity in the language system,
156:            	where this factory holds things that are pretty stable,
157:            	like other factories.
158:            	<p>
159:            	The returned LanguageConnectionContext is intended for use
160:            	only by the connection that requested it.
161:
162:            	@return a language connection context for the context stack.
163:            	@exception StandardException the usual -- for the subclass
164:             */
165:
166:            public LanguageConnectionContext newLanguageConnectionContext(
167:                    ContextManager cm, TransactionController tc,
168:                    LanguageFactory lf, Database db, String userName,
169:                    String drdaID, String dbname) throws StandardException {
170:
171:                pushDataDictionaryContext(cm);
172:
173:                return new GenericLanguageConnectionContext(cm, tc, lf, this ,
174:                        db, userName, getNextLCCInstanceNumber(), drdaID,
175:                        dbname);
176:            }
177:
178:            public Cacheable newCacheable(CacheManager cm) {
179:                return new CachedStatement();
180:            }
181:
182:            /*
183:            	these methods all look for factories that we booted.
184:             */
185:
186:            /**
187:            Get the UUIDFactory to use with this language connection
188:            REMIND: this is only used by the compiler; should there be
189:            a compiler module control class to boot compiler-only stuff?
190:             */
191:            public UUIDFactory getUUIDFactory() {
192:                return uuidFactory;
193:            }
194:
195:            /**
196:            	Get the ClassFactory to use with this language connection
197:             */
198:            public ClassFactory getClassFactory() {
199:                return classFactory;
200:            }
201:
202:            /**
203:            	Get the JavaFactory to use with this language connection
204:            	REMIND: this is only used by the compiler; should there be
205:            	a compiler module control class to boot compiler-only stuff?
206:             */
207:            public JavaFactory getJavaFactory() {
208:                return javaFactory;
209:            }
210:
211:            /**
212:            	Get the NodeFactory to use with this language connection
213:            	REMIND: is this only used by the compiler?
214:             */
215:            public NodeFactory getNodeFactory() {
216:                return nodeFactory;
217:            }
218:
219:            /**
220:            	Get the ExecutionFactory to use with this language connection
221:             */
222:            public ExecutionFactory getExecutionFactory() {
223:                return ef;
224:            }
225:
226:            /**
227:            	Get the AccessFactory to use with this language connection
228:             */
229:            public AccessFactory getAccessFactory() {
230:                return af;
231:            }
232:
233:            /**
234:            	Get the PropertyFactory to use with this language connection
235:             */
236:            public PropertyFactory getPropertyFactory() {
237:                return pf;
238:            }
239:
240:            /**
241:            	Get the OptimizerFactory to use with this language connection
242:             */
243:            public OptimizerFactory getOptimizerFactory() {
244:                return of;
245:            }
246:
247:            /**
248:            	Get the TypeCompilerFactory to use with this language connection
249:             */
250:            public TypeCompilerFactory getTypeCompilerFactory() {
251:                return tcf;
252:            }
253:
254:            /**
255:            	Get the DataValueFactory to use with this language connection
256:             */
257:            public DataValueFactory getDataValueFactory() {
258:                return dvf;
259:            }
260:
261:            protected void pushDataDictionaryContext(ContextManager cm) {
262:                // we make sure there is a data dictionary context in place.
263:                dd.pushDataDictionaryContext(cm);
264:            }
265:
266:            /*
267:            	ModuleControl interface
268:             */
269:
270:            /**
271:            	this implementation will not support caching of statements.
272:             */
273:            public boolean canSupport(Properties startParams) {
274:
275:                return Monitor.isDesiredType(startParams,
276:                        EngineType.STANDALONE_DB);
277:            }
278:
279:            private int statementCacheSize(Properties startParams) {
280:                String wantCacheProperty = null;
281:
282:                wantCacheProperty = PropertyUtil
283:                        .getPropertyFromSet(
284:                                startParams,
285:                                org.apache.derby.iapi.reference.Property.STATEMENT_CACHE_SIZE);
286:
287:                if (SanityManager.DEBUG)
288:                    SanityManager.DEBUG("StatementCacheInfo",
289:                            "Cacheing implementation chosen if null or 0<"
290:                                    + wantCacheProperty);
291:
292:                if (wantCacheProperty != null) {
293:                    try {
294:                        cacheSize = Integer.parseInt(wantCacheProperty);
295:                    } catch (NumberFormatException nfe) {
296:                        cacheSize = org.apache.derby.iapi.reference.Property.STATEMENT_CACHE_SIZE_DEFAULT;
297:                    }
298:                }
299:
300:                return cacheSize;
301:            }
302:
303:            /**
304:             * Start-up method for this instance of the language connection factory.
305:             * Note these are expected to be booted relative to a Database.
306:             *
307:             * @param startParams	The start-up parameters (ignored in this case)
308:             *
309:             * @exception StandardException	Thrown on failure to boot
310:             */
311:            public void boot(boolean create, Properties startParams)
312:                    throws StandardException {
313:
314:                dvf = (DataValueFactory) Monitor
315:                        .bootServiceModule(
316:                                create,
317:                                this ,
318:                                org.apache.derby.iapi.reference.ClassName.DataValueFactory,
319:                                startParams);
320:                javaFactory = (JavaFactory) Monitor
321:                        .startSystemModule(org.apache.derby.iapi.reference.Module.JavaFactory);
322:                uuidFactory = Monitor.getMonitor().getUUIDFactory();
323:                classFactory = (ClassFactory) Monitor.getServiceModule(this ,
324:                        org.apache.derby.iapi.reference.Module.ClassFactory);
325:                if (classFactory == null)
326:                    classFactory = (ClassFactory) Monitor
327:                            .findSystemModule(org.apache.derby.iapi.reference.Module.ClassFactory);
328:
329:                bootDataDictionary(create, startParams);
330:
331:                //set the property validation module needed to do propertySetCallBack
332:                //register and property validation
333:                setValidation();
334:
335:                setStore();
336:
337:                ef = (ExecutionFactory) Monitor.bootServiceModule(create, this ,
338:                        ExecutionFactory.MODULE, startParams);
339:                of = (OptimizerFactory) Monitor.bootServiceModule(create, this ,
340:                        OptimizerFactory.MODULE, startParams);
341:                tcf = (TypeCompilerFactory) Monitor
342:                        .startSystemModule(TypeCompilerFactory.MODULE);
343:                nodeFactory = (NodeFactory) Monitor.bootServiceModule(create,
344:                        this , NodeFactory.MODULE, startParams);
345:
346:                // If the system supports statement caching boot the CacheFactory module.
347:                int cacheSize = statementCacheSize(startParams);
348:                if (cacheSize > 0) {
349:                    CacheFactory cacheFactory = (CacheFactory) Monitor
350:                            .startSystemModule(org.apache.derby.iapi.reference.Module.CacheFactory);
351:                    singleStatementCache = cacheFactory.newCacheManager(this ,
352:                            "StatementCache", cacheSize / 4, cacheSize);
353:                }
354:
355:            }
356:
357:            protected void bootDataDictionary(boolean create,
358:                    Properties startParams) throws StandardException {
359:                dd = (DataDictionary) Monitor.bootServiceModule(create, this ,
360:                        DataDictionary.MODULE, startParams);
361:            }
362:
363:            /**
364:             * returns the statement cache that this connection should use; currently
365:             * there is a statement cache per connection.
366:             */
367:
368:            public CacheManager getStatementCache() {
369:                return singleStatementCache;
370:            }
371:
372:            /**
373:             * Stop this module.  In this case, nothing needs to be done.
374:             */
375:            public void stop() {
376:            }
377:
378:            /*
379:             ** Methods of PropertySetCallback
380:             */
381:
382:            public void init(boolean dbOnly, Dictionary p) {
383:                // not called yet ...
384:            }
385:
386:            /**
387:              @see PropertySetCallback#validate
388:              @exception StandardException Thrown on error.
389:             */
390:            public boolean validate(String key, Serializable value, Dictionary p)
391:                    throws StandardException {
392:                if (value == null)
393:                    return true;
394:                else if (key.equals(Property.DEFAULT_CONNECTION_MODE_PROPERTY)) {
395:                    String value_s = (String) value;
396:                    if (value_s != null
397:                            && !StringUtil.SQLEqualsIgnoreCase(value_s,
398:                                    Property.NO_ACCESS)
399:                            && !StringUtil.SQLEqualsIgnoreCase(value_s,
400:                                    Property.READ_ONLY_ACCESS)
401:                            && !StringUtil.SQLEqualsIgnoreCase(value_s,
402:                                    Property.FULL_ACCESS))
403:                        throw StandardException.newException(
404:                                SQLState.AUTH_INVALID_AUTHORIZATION_PROPERTY,
405:                                key, value_s);
406:
407:                    return true;
408:                } else if (key.equals(Property.READ_ONLY_ACCESS_USERS_PROPERTY)
409:                        || key.equals(Property.FULL_ACCESS_USERS_PROPERTY)) {
410:                    String value_s = (String) value;
411:
412:                    /** Parse the new userIdList to verify its syntax. */
413:                    String[] newList_a;
414:                    try {
415:                        newList_a = IdUtil.parseIdList(value_s);
416:                    } catch (StandardException se) {
417:                        throw StandardException.newException(
418:                                SQLState.AUTH_INVALID_AUTHORIZATION_PROPERTY,
419:                                se, key, value_s);
420:                    }
421:
422:                    /** Check the new list userIdList for duplicates. */
423:                    String dups = IdUtil.dups(newList_a);
424:                    if (dups != null)
425:                        throw StandardException.newException(
426:                                SQLState.AUTH_DUPLICATE_USERS, key, dups);
427:
428:                    /** Check for users with both read and full access permission. */
429:                    String[] otherList_a;
430:                    String otherList;
431:                    if (key.equals(Property.READ_ONLY_ACCESS_USERS_PROPERTY))
432:                        otherList = (String) p
433:                                .get(Property.FULL_ACCESS_USERS_PROPERTY);
434:                    else
435:                        otherList = (String) p
436:                                .get(Property.READ_ONLY_ACCESS_USERS_PROPERTY);
437:                    otherList_a = IdUtil.parseIdList(otherList);
438:                    String both = IdUtil.intersect(newList_a, otherList_a);
439:                    if (both != null)
440:                        throw StandardException.newException(
441:                                SQLState.AUTH_USER_IN_READ_AND_WRITE_LISTS,
442:                                both);
443:
444:                    return true;
445:                }
446:
447:                return false;
448:            }
449:
450:            /** @see PropertySetCallback#apply */
451:            public Serviceable apply(String key, Serializable value,
452:                    Dictionary p) {
453:                return null;
454:            }
455:
456:            /** @see PropertySetCallback#map */
457:            public Serializable map(String key, Serializable value, Dictionary p) {
458:                return null;
459:            }
460:
461:            protected void setValidation() throws StandardException {
462:                pf = (PropertyFactory) Monitor.findServiceModule(this ,
463:                        org.apache.derby.iapi.reference.Module.PropertyFactory);
464:                pf.addPropertySetNotification(this );
465:            }
466:
467:            protected void setStore() throws StandardException {
468:                af = (AccessFactory) Monitor.findServiceModule(this ,
469:                        AccessFactory.MODULE);
470:            }
471:
472:            public Parser newParser(CompilerContext cc) {
473:                return new org.apache.derby.impl.sql.compile.ParserImpl(cc);
474:            }
475:
476:            // Class methods
477:
478:            /**
479:             * Get the instance # for the next LCC.
480:             * (Useful for logStatementText=true output.
481:             *
482:             * @return instance # of next LCC.
483:             */
484:            protected synchronized int getNextLCCInstanceNumber() {
485:                return nextLCCInstanceNumber++;
486:            }
487:        }
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