SOLVED: JDO - Unable to build object instance
().clearCache(); manager.currentTransaction().begin(); Query query = manager.newQuery(House.class); Collection all = (Collection)query.execute(); // now iterate over the result to print each product java.util.Iterator iter = all.iterator(); if (! iter.hasNext()) { System.out.println("No Product entries found!"); } while (iter.hasNext()) { House house = (House) iter.next(); System.out.println(house.toString()); } manager.currentTransaction().commit(); } catch (Throwable t) { t.printStackTrace(); } finally { manager.close(); } } private void getHouses() { System.out.print("Insert house - ID: "); int house = Integer.parseInt(readLine()); System.out.println("All listings for house " + house); } } -Ursprüngliche Nachricht- Von: Gus Heck [mailto:[EMAIL PROTECTED] Gesendet: Sonntag, 21. Dezember 2003 17:17 An: OJB Users List Betreff: Re: AW: AW: AW: JDO - Unable to build object instance Sebastian, One thing I notice that is different about your implementation (from mine) is that your table name does not directly match your class name. I think that _shouldn't_ matter, but it is a difference. There are few other differences too. I notice your jdo file is full of ojb-extensions to specify table names, user name and such. This also differs from mine. Mine looks like this (one class only shown, generated by Xdoclet) http://java.sun.com/dtd/jdo_1_0.dtd";> What is working for me is Xdoclet generated repository_user.xml, Xdoclet generated package.jdo, and MySQL. Torque is creating the database tables for me at runtime, though creating the tables at build time or independantly should suffice so long as nothing silly happens like creating tables in one db and then connecting to another. Insert usual caveats about everything staying in sync here... One direction you might take is to cut back to letting everything fall into default naming and see if it works, then if it does, add in your customizations one by one to see what breaks it. Looking at your extension elements, I also just wondered this... did you specify your user name and password in repository.xml (repository_database.xml)? Granted the error message is very odd if that is the type of problem here, but... -Gus Sebastian Muench wrote: >Hi, > >at first, thank you for help so far. Unfortunately, the error message is >still appearing. I checked the information given by the doc you referred me >to, Gus. The strange thing at all is, that I can make new objects persistent >without problems. But retrieving collections is still the problem. I checked >and doublechecked everything, but don't know where's the problem. > >My persistente class is House. I'm testing on the HSQLDB, comming with OJB. >I prepare my user class for enhancing by compiling it as usual, and copy the >class files to my dir target/classes/""/ and >target/classestest/""/ >As I already wrote, enhancing is successful. > >Here some important lines from my repository_jdo.xml, House.jdo, House.java, >etc. > > >SQL statement for the table in HSQLDB > >CREATE TABLE Seb_House ( >ID INTEGER NOT NULL PRIMARY KEY, >NAME VARCHAR) > > > > >Corresponding mapping tags in repository_jdo.xml > > > class="dbsii.House" > table="Seb_House" > > > name="id" > column="ID" > jdbc-type="INTEGER" > primarykey="true" > /> > name="name" > column="NAME" > jdbc-type="VARCHAR" > /> > > > > >The persistente class file > >package dbsii; > >import java.io.Serializable; > >class House implements Serializable { > > private int id; > protected String name; > > public House() { > } > > public House(int id, String name) { > this.id = id; > this.name = name; > } > > public int getId() { > return this.id; > } > > public String getName() { > return this.name; > } > > public void setId(int id) { > this.id = id; > } > > public void setName(String name) { > this.name = name; > } > > public String toSt
AW: AW: AW: JDO - Unable to build object instance
Hi, at first, thank you for help so far. Unfortunately, the error message is still appearing. I checked the information given by the doc you referred me to, Gus. The strange thing at all is, that I can make new objects persistent without problems. But retrieving collections is still the problem. I checked and doublechecked everything, but don't know where's the problem. My persistente class is House. I'm testing on the HSQLDB, comming with OJB. I prepare my user class for enhancing by compiling it as usual, and copy the class files to my dir target/classes/""/ and target/classestest/""/ As I already wrote, enhancing is successful. Here some important lines from my repository_jdo.xml, House.jdo, House.java, etc. > SQL statement for the table in HSQLDB CREATE TABLE Seb_House ( ID INTEGER NOT NULL PRIMARY KEY, NAME VARCHAR) > Corresponding mapping tags in repository_jdo.xml > The persistente class file package dbsii; import java.io.Serializable; class House implements Serializable { private int id; protected String name; public House() { } public House(int id, String name) { this.id = id; this.name = name; } public int getId() { return this.id; } public String getName() { return this.name; } public void setId(int id) { this.id = id; } public void setName(String name) { this.name = name; } public String toString() { return "[" + this.id + "] " + this.name; } } > The corresponding House.jdo http://java.sun.com/dtd/jdo_1_0.dtd";> > The lines causing the error (pretty the same as in the jdo tutorial) manager = factory.getPersistenceManager(); try { // JDO does not like old instances... PersistenceBrokerFactory.defaultPersistenceBroker().clearCache(); manager.currentTransaction().begin(); Query query = manager.newQuery(House.class); // >>> NEXT LINE CAUSES THE ERROR <<< Collection all = (Collection)query.execute(); // now iterate over the result to print each product java.util.Iterator iter = all.iterator(); if (! iter.hasNext()) { System.out.println("No Product entries found!"); } while (iter.hasNext()) { House house = (House) iter.next(); System.out.println(house.toString()); } } ... > The error message [JDO] DEBUG: OjbStoreConnector.begin: connectionReadyForRelease=false org.apache.ojb.broker.PersistenceBrokerException: Unable to build object instance (MAYBE you don't have a constructor available):class dbsii.House at org.apache.ojb.broker.accesslayer.RowReaderDefaultImpl.buildWithReflection(R owReaderDefaultImpl.java:239) at org.apache.ojb.broker.accesslayer.RowReaderDefaultImpl.readObjectFrom(RowRea derDefaultImpl.java:115)at org.apache.ojb.broker.accesslayer.RsIterator.getObjectFromResultSet(RsIterat or.java:428) at org.apache.ojb.broker.accesslayer.RsIterator.next(RsIterator.java:256) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:147) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:244) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:263) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getCollectionByQuery(Persis tenceBrokerImpl.java:998) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery( DelegatingPersistenceBroker.java:322) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery( DelegatingPersistenceBroker.java:322) at org.apache.ojb.jdori.sql.OjbExtent.(OjbExtent.java:98) at org.apache.ojb.jdori.sql.OjbStoreManager.getExtent(OjbStoreManager.java:251) at com.sun.jdori.common.PersistenceManagerImpl.getExtent(Unknown Source) at com.sun.jdori.common.query.QueryImpl.checkCandidates(Unknown Source) at com.sun.jdori.common.query.QueryImpl.execute(Unknown Source) at dbsii.Frontend.getHouseListings(Frontend.java:148) at dbsii.Frontend.run(Frontend.java:68) at dbsii.Frontend.main(Frontend.java:40) Caused by: org.apache.ojb.broker.metadata.ClassNotPersistenceCapableException: (Could not instantiate dbsii.House: Class org.apache.ojb.broker.util.ConstructorHelper can not access a member of class dbsii.House with modifiers "p
AW: AW: JDO - Unable to build object instance
I changed that, but still no result. :-/ It reports "can't access class member with modifiers 'public'" and still the "can't intanciate class, may be no constructor is available". I really don't know what to do anymore. -Ursprüngliche Nachricht- Von: Gus Heck [mailto:[EMAIL PROTECTED] Gesendet: Donnerstag, 18. Dezember 2003 21:20 An: OJB Users List Betreff: Re: AW: JDO - Unable to build object instance It might be because you havn't followed the javabean get/set pattern... you wrote: public String GetName() { public void SetName(String name) { but the standard pattern is public String getName() { public void setName(String name) { This probably causes the enhancer to not recognize your object as having any properties to enhance or some such. - Gus Sebastian Muench wrote: >Hi all, > >yes, I have the default public constructor. >May it be, I missed some settings? >I did: >- the mapping in the Person.jdo (copied to target/classes/JDOTest/) >- the mapping in the repository_jdo.xml (in target/test/ojb/) >- the schema - creation in the hsqldb > >The build and enhance of the class is successful. >See more complete source code below. > >Thanks for help, >Sebastian > > > >>>>>>>>>>>>>>>>>>>>>>>>>>>>Person.class <<<<<<<<<<<<<<<<<<<<<<< >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> >package JDOTest; > >import java.io.Serializable; > >public class Person implements Serializable { > > private int id; > protected String name; > > public Person() { > > } > > public Person(int id, String name) { > this.id = id; > this.name = name; > } > > public int GetId() { > return this.id; > } > > public String GetName() { > return this.name; > } > > public void SetId(int id) { > this.id = id; > } > > public void SetName(String name) { > this.name = name; > } > >} > > > >>>>>>>>>>>>>>>>>>>>>>>>>>>>TestJdo.class <<<<<<<<<<<<<<<<<<<<<<< >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> > >... > >public class TestJdo { > > private PersistenceManagerFactory factory; > private PersistenceManager manager; > > public TestJdo() { > > factory = null; > manager = null; > > try { > factory = new OjbStorePMF(); > manager = factory.getPersistenceManager(); > } catch(Throwable t) { > System.out.println(t.getMessage()); > t.printStackTrace(); > } > > } > > ... > > private void run() { > > Person p = new Person(); > > try { > > PersistenceBrokerFactory.defaultPersistenceBroker().clearCache(); > this.manager.currentTransaction().begin(); > Query query = this.manager.newQuery(Person.class); > > Collection allPerson = (Collection)query.execute(); > > Iterator iter = allPerson.iterator(); > if(!iter.hasNext()) { > System.out.println("No entries found"); > } > > while(iter.hasNext()) { > System.out.println(iter.next()); > } > > manager.currentTransaction().commit(); > } catch(Throwable t) { > t.printStackTrace(); > } > > finally { > manager.close(); > } > > } > >} > > >-Ursprüngliche Nachricht- >Von: Brian McCallister [mailto:[EMAIL PROTECTED] >Gesendet: Mittwoch, 17. Dezember 2003 18:34 >An: OJB Users List >Betreff: Re: JDO - Unable to build object instance > > >It doesn't outsi
AW: JDO - Unable to build object instance
Hi all, yes, I have the default public constructor. May it be, I missed some settings? I did: - the mapping in the Person.jdo (copied to target/classes/JDOTest/) - the mapping in the repository_jdo.xml (in target/test/ojb/) - the schema - creation in the hsqldb The build and enhance of the class is successful. See more complete source code below. Thanks for help, Sebastian >>>>>>>>>>>>>>>>>>>>>>>>>>> Person.class <<<<<<<<<<<<<<<<<<<<<<< package JDOTest; import java.io.Serializable; public class Person implements Serializable { private int id; protected String name; public Person() { } public Person(int id, String name) { this.id = id; this.name = name; } public int GetId() { return this.id; } public String GetName() { return this.name; } public void SetId(int id) { this.id = id; } public void SetName(String name) { this.name = name; } } >>>>>>>>>>>>>>>>>>>>>>>>>>> TestJdo.class <<<<<<<<<<<<<<<<<<<<<<< ... public class TestJdo { private PersistenceManagerFactory factory; private PersistenceManager manager; public TestJdo() { factory = null; manager = null; try { factory = new OjbStorePMF(); manager = factory.getPersistenceManager(); } catch(Throwable t) { System.out.println(t.getMessage()); t.printStackTrace(); } } ... private void run() { Person p = new Person(); try { PersistenceBrokerFactory.defaultPersistenceBroker().clearCache(); this.manager.currentTransaction().begin(); Query query = this.manager.newQuery(Person.class); Collection allPerson = (Collection)query.execute(); Iterator iter = allPerson.iterator(); if(!iter.hasNext()) { System.out.println("No entries found"); } while(iter.hasNext()) { System.out.println(iter.next()); } manager.currentTransaction().commit(); } catch(Throwable t) { t.printStackTrace(); } finally { manager.close(); } } } -Ursprüngliche Nachricht- Von: Brian McCallister [mailto:[EMAIL PROTECTED] Gesendet: Mittwoch, 17. Dezember 2003 18:34 An: OJB Users List Betreff: Re: JDO - Unable to build object instance It doesn't outside of JDO at least, I use private no-arg constructors with OJB all the time. -Brian On Wed, 2003-12-17 at 12:18, Gus Heck wrote: > Mahler Thomas wrote: > > >Hi Sebastian, > > > >Does your class have a public default constructor? > > > > > > > > > From _Core Java Data Objects_ page 51: > > "There is one requirement, however; JDO requires that a > persistence-capable class have a no-arguments constructor. This > constructor does not need to be declared public it just needs to be > accessible to the class itself and to any potential subclasses. If thee > are no sublcasses it can be declared as private." > > Does OJB place a further restriction that it must be public? > > -Gus > > > > > > >>-Original Message- > >>From: Sebastian Muench [mailto:[EMAIL PROTECTED] > >>Sent: Wednesday, December 17, 2003 1:42 AM > >>To: OJB Users List; [EMAIL PROTECTED] > >>Subject: R: JDO - Unable to build object instance > >> > >> > >>Oh, the file I mentioned in my last mail hasn't been attached. > >>Here is the screenshot: > >> > >>[JDO] DEBUG: OjbStoreConnector.begin: connectionReadyForRelease=false > >>[org.apache.ojb.broker.accesslayer.RsIterator] ERROR: Error > >>while iterate > >>ResultSet for query > >>org.apache.ojb.broker.accesslayer.RsQueryObject[query: > >>Query from class JDOTest.Person where null, class descriptor: > >>JDOTest.Person] > >>Unable to build object instance (MAYBE you don't have a constructor > &
R: JDO - Unable to build object instance
Oh, the file I mentioned in my last mail hasn't been attached. Here is the screenshot: [JDO] DEBUG: OjbStoreConnector.begin: connectionReadyForRelease=false [org.apache.ojb.broker.accesslayer.RsIterator] ERROR: Error while iterate ResultSet for query org.apache.ojb.broker.accesslayer.RsQueryObject[query: Query from class JDOTest.Person where null, class descriptor: JDOTest.Person] Unable to build object instance (MAYBE you don't have a constructor available):class JDOTest.Person org.apache.ojb.broker.PersistenceBrokerException: Unable to build object instance (MAYBE you don't have a constructor available):class JDOTest.Person at org.apache.ojb.broker.accesslayer.RowReaderDefaultImpl.buildWithReflection(R owReaderDefaultImpl.java:239) at org.apache.ojb.broker.accesslayer.RowReaderDefaultImpl.readObjectFrom(RowRea derDefaultImpl.java:115) at org.apache.ojb.broker.accesslayer.RsIterator.getObjectFromResultSet(RsIterat or.java:463) at org.apache.ojb.broker.accesslayer.RsIterator.next(RsIterator.java:284) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:147) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:244) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:263) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getCollectionByQuery(Persis tenceBrokerImpl.java:997) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery( DelegatingPersistenceBroker.java:322) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery( DelegatingPersistenceBroker.java:322) at org.apache.ojb.jdori.sql.OjbExtent.(OjbExtent.java:98) at org.apache.ojb.jdori.sql.OjbStoreManager.getExtent(OjbStoreManager.java:251) at com.sun.jdori.common.PersistenceManagerImpl.getExtent(Unknown Source) at com.sun.jdori.common.query.QueryImpl.checkCandidates(Unknown Source) at com.sun.jdori.common.query.QueryImpl.execute(Unknown Source) at JDOTest.TestJdo.run(TestJdo.java:52) at JDOTest.TestJdo.main(TestJdo.java:39) Caused by: org.apache.ojb.broker.metadata.ClassNotPersistenceCapableException: (Could not instantiate JDOTest.Person: Class org.apache.ojb.broker.util.ConstructorHelper can not access a member of class JDOTest.Person with modifiers "public") at org.apache.ojb.broker.util.ConstructorHelper.instantiate(ConstructorHelper.j ava:162) at org.apache.ojb.broker.accesslayer.RowReaderDefaultImpl.buildWithReflection(R owReaderDefaultImpl.java:235) ... 16 more Caused by: java.lang.IllegalAccessException: Class org.apache.ojb.broker.util.ConstructorHelper can not access a member of class JDOTest.Person with modifiers "public" at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:57) at java.lang.reflect.Constructor.newInstance(Constructor.java:268) at org.apache.ojb.broker.util.ConstructorHelper.instantiate(ConstructorHelper.j ava:158) ... 17 more org.apache.ojb.broker.PersistenceBrokerException: java.util.NoSuchElementException: Could not obtain next object: Unable to build object instance (MAYBE you don't have a constructor available):class JDOTest.Person at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:251) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:263) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getCollectionByQuery(Persis tenceBrokerImpl.java:997) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery( DelegatingPersistenceBroker.java:322) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery( DelegatingPersistenceBroker.java:322) at org.apache.ojb.jdori.sql.OjbExtent.(OjbExtent.java:98) at org.apache.ojb.jdori.sql.OjbStoreManager.getExtent(OjbStoreManager.java:251) at com.sun.jdori.common.PersistenceManagerImpl.getExtent(Unknown Source) at com.sun.jdori.common.query.QueryImpl.checkCandidates(Unknown Source) at com.sun.jdori.common.query.QueryImpl.execute(Unknown Source) at JDOTest.TestJdo.run(TestJdo.java:52) at JDOTest.TestJdo.main(TestJdo.java:39) Caused by: java.util.NoSuchElementException: Could not obtain next object: Unable to build object instance (MAYBE you don't have a constructor available):class JDOTest.Person at org.apache.ojb.broker.accesslayer.RsIterator.next(RsIterator.java:310) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:147) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryRe ferenceBroker.java:244) ... 11 more Exception in thread "main" javax.jdo.JDOUserException: Cannot clo
JDO - Unable to buid object instance
Hi all, I wrote a small application to test and try OJB with JDO. My Userclass is getting enhanced successfully. Running the application, I get the following error (see attached for file for details) java.util.NoSuchElementException: Could not obtain next object: Unable to build object instance ... The line in the source code causing this is: Query query = manager.newQuery(Person.class); Collection allPerson = (Collection)query.execute(); Does anyone know why this error occurs? Thanks, Sebastian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
JDO Enhancer
Hi, I get an error "class given to extent does not implement javax.jod.spi.PersistenteCapable" anytime I run my jdo-application. I put the mapping entries in the repository_jdo.xml. I don't know how to set up the bytecode enhancer. Do I have to compile my SourceCode a second time including the enhancer? How do I have to do that? Thanks for any kind of help (including hints where to find documentation) Greetinx, Sebastian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
install jdo-api
Hi all, I try to execute the jdo-tutorial after installing ojb by following the quickstart guide. I added the obj/lib directory to my classpath. The tutorial applicaions 1 and 2 are running fine. By building the jdo-tutorial (using bin/build.sh with-jdori prepare-tutorials enhance-jdori ), I get the following error (please see below). Does anybody know how to fix that? Thanx for help, Sebastian [EMAIL PROTECTED] db-ojb-1.0.rc4]# bin/build.sh with-jdori prepare-tutorials enhance-jdori Buildfile: build.xml splash: set-archive-name: set-archive-name-date: detect-jdk: check-jdk12proxy-classes: check-jndi-classes: use-jdk12: use-jdk13: use-jdk14: [echo] detected JDK 1.4 init: prepare: check-jdo-classes: check-jdori-classes: with-jdori: [copy] Copying 16 files to /usr/local/src/db-ojb-1.0.rc4/target/src [copy] Copying 1 file to /usr/local/src/db-ojb-1.0.rc4/target/src/org/apache/ojb/tutorial5 splash: set-archive-name: set-archive-name-date: detect-jdk: check-jdk12proxy-classes: check-jndi-classes: use-jdk12: use-jdk13: use-jdk14: [echo] detected JDK 1.4 init: prepare: check-j2ee-classes: preprocess: [echo] using switches: +JDK13, +JDBC30 [java] [java] ... main: [javac] Compiling 564 source files to /usr/local/src/db-ojb-1.0.rc4/target/classes [javac] /usr/local/src/db-ojb-1.0.rc4/target/src/org/apache/ojb/jdori/sql/OjbStoreMa nager.java:76: cannot resolve symbol [javac] symbol : class RuntimeJDOModelFactoryImpl [javac] location: package jdo [javac] import com.sun.jdori.common.model.jdo.RuntimeJDOModelFactoryImpl; [javac] ^ [javac] /usr/local/src/db-ojb-1.0.rc4/target/src/org/apache/ojb/jdori/sql/OjbStoreMa nager.java:80: cannot resolve symbol [javac] symbol : class JDOModelException [javac] location: package jdo [javac] import com.sun.jdori.model.jdo.JDOModelException; [javac]^ [javac] /usr/local/src/db-ojb-1.0.rc4/target/src/org/apache/ojb/jdori/sql/OjbFieldMa nager.java:64: cannot resolve symbol [javac] symbol : class RuntimeJDOModelFactoryImpl [javac] location: package jdo [javac] import com.sun.jdori.common.model.jdo.RuntimeJDOModelFactoryImpl; [javac] ^ [javac] /usr/local/src/db-ojb-1.0.rc4/target/src/org/apache/ojb/jdori/sql/OjbFieldMa nager.java:68: cannot resolve symbol [javac] symbol : class JDOModelException [javac] location: package jdo [javac] import com.sun.jdori.model.jdo.JDOModelException; [javac]^ [javac] /usr/local/src/db-ojb-1.0.rc4/target/src/org/apache/ojb/jdori/sql/OjbStoreMa nager.java:252: cannot resolve symbol [javac] symbol : variable RuntimeJDOModelFactoryImpl [javac] location: class org.apache.ojb.jdori.sql.OjbStoreManager [javac] JDOModel m = RuntimeJDOModelFactoryImpl.getInstance().getJDOModel(cl); [javac] ^ [javac] /usr/local/src/db-ojb-1.0.rc4/target/src/org/apache/ojb/jdori/sql/OjbStoreMa nager.java:255: cannot resolve symbol [javac] symbol : class JDOModelException [javac] location: class org.apache.ojb.jdori.sql.OjbStoreManager [javac] catch (JDOModelException ex) [javac]^ [javac] /usr/local/src/db-ojb-1.0.rc4/target/src/org/apache/ojb/jdori/sql/OjbFieldMa nager.java:289: cannot resolve symbol [javac] symbol : variable RuntimeJDOModelFactoryImpl [javac] location: class org.apache.ojb.jdori.sql.OjbFieldManager [javac] JDOModel m = RuntimeJDOModelFactoryImpl.getInstance().getJDOModel(cl); [javac] ^ [javac] /usr/local/src/db-ojb-1.0.rc4/target/src/org/apache/ojb/jdori/sql/OjbFieldMa nager.java:292: cannot resolve symbol [javac] symbol : class JDOModelException [javac] location: class org.apache.ojb.jdori.sql.OjbFieldManager [javac] catch (JDOModelException ex) [javac]^ [javac] 8 errors BUILD FAILED file:/usr/local/src/db-ojb-1.0.rc4/build.xml:218: Compile failed; see the