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artilheiro
 Post subject: increment id generator not found
PostPosted: Mon Dec 15, 2003 9:36 pm 
Newbie

Joined: Mon Dec 15, 2003 7:03 pm
Posts: 12
Code snip here:


Code:
<hibernate-mapping>
    <class
        name="inventory.InventoryItem"
        table="inventory_item">

        <id name="ID"
            column="inventory_item_id"
            type="long"
            unsaved-value="-1">
            <generator class="increment"/>
        </id>



Error msg here:


2003-12-15 17:29:46,785 ERROR main test.inventory.InventoryItemTest - could not instantiate id generator: increment
java.lang.ClassNotFoundException: increment
at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at net.sf.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:255)
at net.sf.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:64)
at net.sf.hibernate.mapping.Value.createIdentifierGenerator(Value.java:78)
at net.sf.hibernate.persister.AbstractEntityPersister.<init>(AbstractEntityPersister.java:489)
at net.sf.hibernate.persister.EntityPersister.<init>(EntityPersister.java:623)
at net.sf.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:203)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:594)
at database.HibernateSesssionFactoryManager.getFactory(HibernateSesssionFactoryManager.java:40)
at test.inventory.InventoryItemTest.setUp(InventoryItemTest.java:35)
at junit.framework.TestCase.runBare(TestCase.java:125)
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 junit.textui.TestRunner.doRun(TestRunner.java:116)
at junit.textui.TestRunner.start(TestRunner.java:172)
at com.intellij.rt.execution.junit.TextTestRunner.main(TextTestRunner.java:12)
rethrown as
net.sf.hibernate.MappingException: could not instantiate id generator: increment
at net.sf.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:70)
at net.sf.hibernate.mapping.Value.createIdentifierGenerator(Value.java:78)
at net.sf.hibernate.persister.AbstractEntityPersister.<init>(AbstractEntityPersister.java:489)
at net.sf.hibernate.persister.EntityPersister.<init>(EntityPersister.java:623)
at net.sf.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:203)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:594)
at database.HibernateSesssionFactoryManager.getFactory(HibernateSesssionFactoryManager.java:40)
at test.inventory.InventoryItemTest.setUp(InventoryItemTest.java:35)
at junit.framework.TestCase.runBare(TestCase.java:125)
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 junit.textui.TestRunner.doRun(TestRunner.java:116)
at junit.textui.TestRunner.start(TestRunner.java:172)
at com.intellij.rt.execution.junit.TextTestRunner.main(TextTestRunner.java:12)
Caused by: java.lang.ClassNotFoundException: increment
at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at net.sf.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:255)
at net.sf.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:64)
... 17 more
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gavin
 Post subject:
PostPosted: Mon Dec 15, 2003 11:31 pm 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
eh?? What version of Hibernate is this?
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artilheiro
 Post subject:
PostPosted: Tue Dec 16, 2003 2:37 pm 
Newbie

Joined: Mon Dec 15, 2003 7:03 pm
Posts: 12
I am using 2.0. This is not much of an issue for me because I will not be using increment. But somebody else might.
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gavin
 Post subject:
PostPosted: Tue Dec 16, 2003 9:16 pm 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
increment was introduced in 2.0.1

why are you using an obsolete version of Hibernate? You should be using 2.0.3 at least.
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artilheiro
 Post subject:
PostPosted: Wed Dec 17, 2003 4:03 pm 
Newbie

Joined: Mon Dec 15, 2003 7:03 pm
Posts: 12
I am sorry Gavin, 2.0.3 is what I have. I didn't thik the minor version number was that important.
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gavin
 Post subject:
PostPosted: Wed Dec 17, 2003 5:24 pm 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
I have no idea what you are doing wrong. This is what the code looks like:
Code:

   static {
      GENERATORS.put("uuid.hex", UUIDHexGenerator.class);
      GENERATORS.put("uuid.string", UUIDStringGenerator.class);
      GENERATORS.put("hilo", TableHiLoGenerator.class);
      GENERATORS.put("assigned", Assigned.class);
      GENERATORS.put("identity", IdentityGenerator.class);
      GENERATORS.put("sequence", SequenceGenerator.class);
      GENERATORS.put("seqhilo", SequenceHiLoGenerator.class);
      GENERATORS.put("vm", IncrementGenerator.class); //vm is deprecated
      GENERATORS.put("increment", IncrementGenerator.class);
      GENERATORS.put("foreign", ForeignGenerator.class);
   }
   
   public static IdentifierGenerator create(String strategy, Type type, Properties params, Dialect dialect) throws MappingException {
      try {
         //if ( "vm".equals(strategy) ) log.info("'vm' strategy is deprecated; use 'increment'");
         
         Class clazz = (Class) GENERATORS.get(strategy);
         if ( "native".equals(strategy) ) {
            if ( dialect.supportsIdentityColumns() ) {
               clazz = IdentityGenerator.class;
            }
            else if ( dialect.supportsSequences() ) {
               clazz = SequenceGenerator.class;
            }
            else {
               clazz = TableHiLoGenerator.class;
            }
         }
         if (clazz==null) clazz = ReflectHelper.classForName(strategy);
         IdentifierGenerator idgen = (IdentifierGenerator) clazz.newInstance();
         if (idgen instanceof Configurable) ( (Configurable) idgen).configure(type, params, dialect);
         return idgen;
      }
      catch (Exception e) {
         throw new MappingException("could not instantiate id generator", e);
      }
   }
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