I am trying to get OJB working and am getting absolutely nowhere, so I appeal to the list for some help.
The environment is OJB rc5, Eclipse IDE, Sun JDK1.4.2, Oracle 9, NT4.0. The running of the code is controlled by JUnit. I can connect to the DB both with sqlplus and jdbc. I cannot actually get OJB to connect. Clearly I am missing something, but I cannot discover what. By fiddling around with the XML I can generate various sorts of errors. In all cases the url that the system is using appears to be entirely palusible. Here are the code, the repository_database.xml and the output: Code: /* * Created on 26-Mar-2004 * CVS version $Header:$ */ package com.gsk.bet; import java.util.*; import java.sql.*; import junit.framework.*; import org.apache.ojb.broker.*; import org.apache.ojb.broker.query.*; import org.odmg.*; import org.apache.ojb.odmg.*; import com.gsk.bet.Entity; /** * @author rxm1676 * @company GSK */ public class ConnectionTest extends TestCase { PersistenceBroker broker; Database db = null; Implementation odmg = null; public void setUp() { try { Class c = Class.forName("oracle.jdbc.driver.OracleDriver" ); broker = PersistenceBrokerFactory.defaultPersistenceBroker(); odmg = OJB.getInstance(); db = odmg.newDatabase(); db.open("BETConnection", Database.OPEN_READ_WRITE); } catch (Exception ex) { System.out.println(ex); } } public void tearDown() { if (broker != null) { broker.close(); } if (db != null) { try { db.close(); } catch (ODMGException ex2) { } } } /** * Null test. Just checks that OJB is properly installed, that it can see both the * XML and the bean classes, and that we can get a Broker and an ODMG instance. * */ public void testConnection() { } /** * Ensure that we can actually talk to the DB from this machine * */ public void testRawJDBC() { try { Connection con = DriverManager.getConnection ("jdbc:oracle:thin:@ukt01368.ggr.co.uk:1521:TOOLS", "bet", "xxxx"); PreparedStatement sth = con.prepareStatement("select * from entity where betid<10"); ResultSet res = sth.executeQuery(); System.out.println("Excuted raw query"); while (res.next()) { Entity ent = new Entity(); ent.setBetid(res.getInt("BETID")); ent.setEntityType(res.getString("ENTITYTYPE")); ent.setDescriptor(res.getString("DESCRIPTOR")); System.out.println("raw retrieval of "+ent); } res.close(); con.close(); } catch (Exception e) { System.out.println("Caught raw exception " + e); } } /** * * @author rxm1676 * @company GSK */ public void testODMGFetchSingle() { Transaction tx = odmg.newTransaction(); try { OQLQuery query = odmg.newOQLQuery(); query.create( "select betid, entityType, descriptor from " + Entity.class.getName() + " where betid = 1"); DList results = (DList)query.execute(); for (Iterator iter = results.iterator(); iter.hasNext();) { tx.begin(); Entity res = (Entity)iter.next(); System.out.println("Retrieved " + res); tx.commit(); } } catch (QueryInvalidException qie) { System.out.println(qie); tx.abort(); } catch (QueryException qe) { System.out.println(qe); tx.abort(); } } /** * Retrieve a single object using the PersistenceBroker * @author rxm1676 * @company GSK */ public void testPBFetchSingle() { Entity example = new Entity(); example.setBetid(1); Query q = QueryFactory.newQueryByExample(example); Entity res = (Entity)broker.getObjectByQuery(q); System.out.println("PB fetched "+res); } } Database_repopsitory.xml <!-- @version $Id: repository_database.xml,v 1.17 2003/11/27 16:42:12 arminw Exp $ --> <!-- Define here all used connections. One defined connection should be defined as the default one, by set default-connection="true" - this could be done at runtime too. It is possible to set user/password at runtime or let login different users at runtime using the same database. Use different PBKey with same jcdAlias name but different user/password. Ditto it is possible to add jdbc-connection-descriptor at runtime using the MetadataManager. --> <!-- this connection was used as the default one within OJB --> <jdbc-connection-descriptor jcd-alias="@JCD_ALIAS@" default-connection="false" platform="@DBMS_NAME@" jdbc-level="@JDBC_LEVEL@" driver="@DRIVER_NAME@" protocol="@URL_PROTOCOL@" subprotocol="@URL_SUBPROTOCOL@" dbalias="@URL_DBALIAS@" username="@USER_NAME@" password="@USER_PASSWD@" eager-release="false" batch-mode="false" useAutoCommit="1" ignoreAutoCommitExceptions="false" > <connection-pool maxActive="21" validationQuery="" /> <sequence-manager className ="org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl"> <attribute attribute-name="grabSize" attribute-value="20"/> <attribute attribute-name="autoNaming" attribute-value="true"/> <attribute attribute-name="globalSequenceId" attribute-value ="false"/> <attribute attribute-name="globalSequenceStart" attribute-value ="10000"/> </sequence-manager> </jdbc-connection-descriptor> <!-- Datasource example --> <!-- jdbc-connection-descriptor jcd-alias="default" default-connection="false" platform="Hsqldb" jdbc-level="2.0" jndi-datasource-name="java:DefaultDS" username="sa" password="" eager-release="false" batch-mode="false" useAutoCommit="0" ignoreAutoCommitExceptions="false" > <sequence-manager className ="org.apache.ojb.broker.util.sequence.SequenceManagerNextValImpl"> <attribute attribute-name="autoNaming" attribute-value="true"/> </sequence-manager> </jdbc-connection-descriptor --> <!-- NOTE: This is a test descriptor used within the junit test suite, do not change any value. A test db connections used for junit tests. This connection matches a hsql database called 'OJB_FarAway' If you do not use the test suite, you could delete this descriptor. This descriptor was used to check multiple database use. --> <jdbc-connection-descriptor jcd-alias="farAway" platform="Hsqldb" jdbc-level="2.0" driver="org.hsqldb.jdbcDriver" protocol="jdbc" subprotocol="hsqldb" dbalias="../OJB_FarAway" username="sa" password="" batch-mode="false" > <connection-pool maxActive="6" whenExhaustedAction="0" validationQuery="select count(*) from OJB_HL_SEQ" /> <sequence-manager className ="org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl"> <attribute attribute-name="grabSize" attribute-value="5"/> </sequence-manager> </jdbc-connection-descriptor> <!-- NOTE: This is a test descriptor used within the junit test suite, do not change any value. If you do not use the test suite, you could delete this descriptor. In the the test directory under org.apache.ojb.broker.metadata.MetadataTest#testReadConnectionDescriptor this descriptor will be evaluated. --> <jdbc-connection-descriptor jcd-alias="BETConnection" default-connection="true" platform="oracle" jdbc-level="2.0" driver="oracle.jdbc.driver.OracleDriver" protocol="jdbc" subprotocol="oracle:thin" dbalias="@ukt01368.ggr.co.uk:1521:TOOLS" username="bet" password="xxxx" eager-release="true" batch-mode="true" useAutoCommit="0" ignoreAutoCommitExceptions="true" > <object-cache class ="org.apache.ojb.broker.cache.ObjectCacheEmptyImpl"> <attribute attribute-name="cacheKey1" attribute-value ="cacheValue1"/> <attribute attribute-name="cacheKey2" attribute-value ="cacheValue2"/> </object-cache> <connection-pool maxActive="1" maxIdle="2" maxWait="3" minEvictableIdleTimeMillis="4" numTestsPerEvictionRun="5" testOnBorrow="true" testOnReturn="true" testWhileIdle="true" timeBetweenEvictionRunsMillis="6" whenExhaustedAction="2" validationQuery="a query" logAbandoned="true" removeAbandoned="true" removeAbandonedTimeout="8" /> <sequence-manager className ="org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl"> <attribute attribute-name="key1" attribute-value="value1"/> <attribute attribute-name="key2" attribute-value="value2"/> </sequence-manager> </jdbc-connection-descriptor> Output: Excuted raw query raw retrieval of BET ID: 1 EntityType: Protein Descriptor;null raw retrieval of BET ID: 2 EntityType: Protein Descriptor;null raw retrieval of BET ID: 3 EntityType: Protein Descriptor;null raw retrieval of BET ID: 4 EntityType: Protein Descriptor;null raw retrieval of BET ID: 5 EntityType: Protein Descriptor;null raw retrieval of BET ID: 6 EntityType: Protein Descriptor;null raw retrieval of BET ID: 7 EntityType: Protein Descriptor;null raw retrieval of BET ID: 8 EntityType: Protein Descriptor;null raw retrieval of BET ID: 9 EntityType: Protein Descriptor;null [org.apache.ojb.broker.accesslayer.JdbcAccessImpl] ERROR: PersistenceBrokerException during the execution of the query: Used ConnectionManager instance could not obtain a connection Used ConnectionManager instance could not obtain a connection org.apache.ojb.broker.PersistenceBrokerException: Used ConnectionManager instance could not obtain a connection at org.apache.ojb.broker.accesslayer.StatementManager.getPreparedStatement(Unknown Source) at org.apache.ojb.broker.accesslayer.JdbcAccessImpl.executeQuery(Unknown Source) at org.apache.ojb.broker.accesslayer.RsQueryObject.performQuery(Unknown Source) at org.apache.ojb.broker.accesslayer.RsIterator.<init>(Unknown Source) at org.apache.ojb.broker.core.RsIteratorFactoryImpl.createRsIterator(Unknown Source) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getRsIteratorFromQuery(Unknown Source) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getIteratorFromQuery(Unknown Source) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getObjectByQuery(Unknown Source) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getObjectByQuery(Unknown Source) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getObjectByQuery(Unknown Source) at com.gsk.bet.ConnectionTest.testPBFetchSingle(ConnectionTest.java:127) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at junit.framework.TestCase.runTest(TestCase.java:154) at junit.framework.TestCase.runBare(TestCase.java:127) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:118) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:392) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:276) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:167) Caused by: org.apache.ojb.broker.accesslayer.LookupException: Could not borrow connection from pool - org.apache.ojb.broker.metadata.JdbcConnectionDescriptor: [EMAIL PROTECTED] jcd-alias=BETConnection default-connection=true dbms=oracle jdbc-level=2.0 driver=oracle.jdbc.driver.OracleDriver protocol=jdbc sub-protocol=oracle:thin [EMAIL PROTECTED]:1521:TOOLS user=bet password=***** eager-release=true ConnectionPoolDescriptor={whenExhaustedAction=2, validationQuery=a query, maxIdle=2, maxActive=1, maxWait=3, removeAbandoned=true, numTestsPerEvictionRun=5, testWhileIdle=true, minEvictableIdleTimeMillis=4, testOnReturn=true, logAbandoned=true, removeAbandonedTimeout=8, timeBetweenEvictionRunsMillis=6, testOnBorrow=true} batchMode=true useAutoCommit=AUTO_COMMIT_IGNORE_STATE ignoreAutoCommitExceptions=true [EMAIL PROTECTED] sequenceManagerClass=class org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl Properties={key2=value2, key1=value1} ] ] at org.apache.ojb.broker.accesslayer.ConnectionFactoryPooledImpl.getConnectionFromPool(Unknown Source) at org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.lookupConnection(Unknown Source) at org.apache.ojb.broker.accesslayer.ConnectionManagerImpl.getConnection(Unknown Source) ... 26 more Caused by: java.util.NoSuchElementException: Could not create a validated object at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:851) ... 29 more --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]