PersistenceManager. PersistenceManagerFactory PersistenceManagerFactory

Transcription

1 Helper Factory J2EE Java 2 Platform Enterprise Edition JNDI Java Naming and Directory Interface Factory Factory Factory Factory

2 106 Factory Factory Helper Factory Factory get() Factory Helper Properties public static Factory getfactory(properties props, ClassLoader cl); public static Factory getfactory(properties props); ClassLoader ClassLoader context 7-1 Properties Factory javax.jdo.option

3 Factory javax.jdo.factoryclass javax.jdo.option.connectionusername javax.jdo.option.connectionpassword javax.jdo.option.connectionurl javax.jdo.option.connectiondrivername javax.jdo.option.connectionfactoryname javax.jdo.option.connectionfactory2name javax.jdo.option.ignorecache javax.jdo.option.optimistic javax.jdo.option.nontransactionalread javax.jdo.option.nontransactionalwrite javax.jdo.option.multithreaded javax.jdo.option.retainvalues javax.jdo.option.restorevalues Properties String 7-1 Factor String boolean String boolean Properties String "true" true false javax.jdo.factoryclass Factory Properties Helper Factory RestoreValues "true" false import java.util.properties; import javax.jdo.helper; import javax.jdo.factory;... Factory pmf = null; Properties properties = new Properties(); properties.put("javax.jdo.factoryclass", "com.sun.jdori.fostore.fostorepmf"); properties.put("javax.jdo.option.connectionurl", "fostore:database/fostore"); properties.put("javax.jdo.option.connectionusername", "dave");

4 108 properties.put("javax.jdo.option.connectionpassword", "jdo4me"); properties.put("javax.jdo.option.optimistic", "false"); properties.put("javax.jdo.option.ignorecache", "false"); properties.put("javax.jdo.option.retainvalues", "true"); properties.put("javax.jdo.option.restorevalues", "yes"); // pmf = Helper.getFactory(properties); false getfactory() javax.jdo.factorclass FatalUserException FatalInternalException javax.jdo.factoryclass FatalUserException getfactory(properties) FatalInternalException Helper Factory Factory Properties Factory Factory getfactory() Factory Properties Factory Factory javax.jdo.option.connectionurl ConnectionURL JDBC JDBC ConnectionURL JDBC

5 109 javax.jdo.option.connectiondrivername ConnectionDriverName oracle.jdbc.driver.oracledriver Oracle JDBC ConnectionDriverName ConnectionDriverName javax.jdo.option.connectionusername javax.jdo.option.connectionpassword ConnectionUserName ConnectionPassword Properties Factory userid password get() javax.jdo.option.connectionfactoryname ConnectionFactoryName connection factory setconnectionfactory() JNDI ConnectionFactory ConnectionFactory ConnectionFactoryName ConnectionURL ConnectionUserName ConnectionPassword ConnectionFactoryName ConnectionFactory ConnectionFactory URL UserName URL Password

6 110 DriverName ServerName PortNumber MaxPool MinPool MsWait DataStoreException LogWriter PrintWriter LoginTimeout Factory setconnectionfactory2() ConnectionFactory2Name javax.jdo.option.connectionfactory2name ConnectionFactory2Name JNDI setconnectionfactory2() javax.jdo.option.connectionurl String getconnectionurl() void setconnectionurl(string)

7 111 javax.jdo.option.connectionusername String getconnectionusername() void setconnectionusername(string) javax.jdo.option.connectionpassword void setconnectionpassword(string) javax.jdo.option.connectionfactoryname String getconnectionfactoryname() Object getconnectionfactory() void setconnectionfactoryname(string) void setconnectionfactory(object) javax.jdo.option.connectionfactory2name String getconnectionfactory2name() Object getconnectionfactory2() void setconnectionfactory2name(string) void setconnectionfactory2(object) javax.jdo.option.connectiondrivername String getconnectiondrivername() void setconnectiondrivername(string) javax.jdo.option.nontransactionalread javax.jdo.option.nontransactionalwrite javax.jdo.option.optimistic javax.jdo.option.retainvalues Factory true UnsupportedOptionException Properties

8 112 javax.jdo.option.nontransactionalread boolean getnontransactionalread() void setnontransactionalread(boolean) javax.jdo.option.nontransactionalwrite boolean getnontransactionalwrite() void setnontransactionalwrite(boolean) javax.jdo.option.optimistic boolean getoptimistic() void setoptimistic(boolean) javax.jdo.option.retainvalues boolean getretainvalues() void setretainvalues(boolean) Factory javax.jdo.option.ignorecache javax.jdo.option.multithreaded javax.jdo.option.restorevalues IgnoreCache Multithreaded RestoreValues 7-2

9 NontransactionalRead Factor y NontransactionalWrite Factor y Optimistic Factor y RetainValues Factor y RestoreValues Factor y IgnoreCache Factor y Query Boolean Factory void setoptimistic(boolean ßag); boolean getoptimistic(); true UnsupportedOptionException true false false false true Factory Factory Collection supportedoptions(); String Collection "javax.jdo.query.ql"

10 MediaManiaApp Factory supportedoptions() Factory package com.mediamania; import java.util.collection; import java.util.iterator; import javax.jdo.factory; public class GetOptions extends MediaManiaApp { public static void main(string[] args) { GetOptions options = new GetOptions(); options.print(); } } public void print() { Collection options = pmf.supportedoptions(); Iterator iter = options.iterator(); System.out.println("Supported options:"); while ( iter.hasnext() ) { String option = (String) iter.next(); System.out.println(option); } System.out.println("\nDefault values for ßags:"); System.out.print("IgnoreCache "); System.out.println( pmf.getignorecache() ); System.out.print("NontransactionalRead "); System.out.println( pmf.getnontransactionalread() ); System.out.print("NontransactionalWrite "); System.out.println( pmf.getnontransactionalwrite() ); System.out.print("Optimistic "); System.out.println( pmf.getoptimistic() ); System.out.print("RestoreValues "); System.out.println( pmf.getrestorevalues() ); System.out.print("RetainValues "); System.out.println( pmf.getretainvalues() ); } public void execute() { }

11 115 Supported options: javax.jdo.option.transiental javax.jdo.option.nontransactionalread javax.jdo.option.nontransactionalwrite javax.jdo.option.retainvalues javax.jdo.option.optimistic javax.jdo.option.applicationidentity javax.jdo.option.datastoreidentity javax.jdo.option.arraylist javax.jdo.option.hashmap javax.jdo.option.hashtable javax.jdo.option.linkedlist javax.jdo.option.treemap javax.jdo.option.treeset javax.jdo.option.vector javax.jdo.option.array javax.jdo.option.nullcollection javax.jdo.query.ql IgnoreCache true NontransactionalRead true NontransactionalWrite false Optimistic true RestoreValues true RetainValues true 7-2 Factory get() Factory current() Factory IgnoreCache extent extent extent IgnoreCache

12 116 Factory.get() IgnoreCache IgnoreCache true false IgnoreCache.newQuery() Query IgnoreCache Query IgnoreCache Factory FatalUserException getfactory() Factory Properties Properties Properties getproperties(); String VendorName VersionNumber getproperties() Factory Properties Factory Factory

13 117 get(); get(string userid, String password); Factory get() Factory userid password get() userid password get() userid password Factory Factory getfactory(); Factory null void setuserobject(object object); Object getuserobject(); close() void close();

14 118 close() isclosed() FatalUserException close() UserException get() Factory boolean isclosed(); false close() true Factory Factory Factory void close(); Factory Factory Permission("closeFactory") Factory close() Factory SecurityException close() UserException close() UserException UserException UserException

15 119 javax.transaction.user begin() commit() rollback() view ACID Atomic Consistent Isolated Durable Atomicity Consistent Isolation Durability Java

16 phantom read 1 2 3

17 No No No OK NontransactionalRead NontransactionalWrite

18 122 current(); close() current() JVM get(); Factory Factory false true UnsupportedOptionException true false

19 123 Factory Optimistic Factory Optimistic void setoptimistic(boolean ßag); boolean getoptimistic(); false setoptimistic() true begin() commit() rollback() bean-managed EJB bean-managed container-managed UserException void begin(); commit() void commit(); void rollback(); rollback() commit() rollback() begin() commit() rollback() Transactoion current() // pmf Factory pm = pmf.get(); tx = pm.current(); try { tx.begin(); // tx.commit(); } catch (Exception jdoexception) { tx.rollback();

20 124 System.err.println("Exception thrown:"); jdoexception.printstacktrace(); } //... try { tx.begin(); // tx.commit(); } catch (Exception jdoexception) { tx.rollback(); System.err.println("Exception thrown:"); jdoexception.printstacktrace(); } //... 1 trans = pm.current(); // trans try { trans.begin(); // trans.commit(); } catch (Exception jdoexception) { trans.rollback(); System.err.println("Exception thrown:"); jdoexception.printstacktrace(); } tx 1 current() 1 tx current() javax.transaction Synchronization Synchronization void beforecompletion(); void aftercompletion(int status); aftercompletion() beforecompletion() aftercompletion() status

21 125 STATUS_COMMITTED javax.transaction.status STATUS_ROLLEDBACK Synchronization void setsynchronization(javax.transaction.synchronization sync); Synchronization Synchronization callback null beforecompletion() aftercompletion() setsynchronization() UserException Synchronization javax.transaction.synchronization getsynchronization();.commit() beforecompletion() Synchronization A Synchronization aftercompletion().rollback() Transition Synchronization aftercompletion()

22 126 RestoreValues false RestoreValues true makepersistence() RestoreValues false rollback() true boolean getrestorevalues(); void setrestorevalues(boolean ßag); RestoreValues ßag RestoreValues UserException boolean isactive(); true Synchronization.afterCompletion() Factory.get() JVM JVM session

23 127 thread safe Query Multithreaded true Multithreaded boolean getmultithreaded(); void setmultithreaded(boolean ßag); Factory Factory javax.jdo.option.multithreaded Multithreaded false Factory Query StateManager Query

24 128