[Hibernate-issues] [Hibernate-JIRA] Commented: (HB-310) CharacterType.get(ResultSet rs, String name) on zero length String

[<leg...@at...>]

The following comment has been added to this issue:

     Author: the_Ellessar
    Created: Thu, 16 Oct 2003 6:30 AM
       Body:
I came across the same problem using SAPDB 7.4. I think it should either return null or a character. But what happens now is that I get a java.lang.StringIndexOutOfBoundsException. It is now not possible to use character type's if a value in the database can be null.


Fix:

Index: CharacterType.java
===================================================================
RCS file: /cvsroot/hibernate/Hibernate2/src/net/sf/hibernate/type/CharacterType.java,v
retrieving revision 1.5
diff -u -r1.5 CharacterType.java
--- CharacterType.java 1 Mar 2003 12:15:28 -0000 1.5
+++ CharacterType.java 16 Oct 2003 11:13:30 -0000
@@ -12,7 +12,7 @@
  
  public Object get(ResultSet rs, String name) throws SQLException {
   String str = rs.getString(name);
-  if (str==null) {
+  if (str == null || str.length() == 0) {
    return null;
   }
   else {

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View the issue:

  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-310


Here is an overview of the issue:
---------------------------------------------------------------------
        Key: HB-310
    Summary: CharacterType.get(ResultSet rs, String name) on zero length String
       Type: Bug

     Status: Closed
   Priority: Blocker
 Resolution: REJECTED

    Project: Hibernate2
 Components: 
             core
   Versions:
             2.0.2
             2.0.3

   Assignee: 
   Reporter: Tim Schafer

    Created: Thu, 4 Sep 2003 11:03 AM
    Updated: Thu, 4 Sep 2003 9:31 PM
Environment: Sun JDK 1.4.2
Mysql 4.0.13

Description:

The get method of CharacterType is calling
java.lang.String.charAt(0)
on a String instance that has zero length

This resulted rom trying to load a mapped object from
a Mysql 4.0.13 record that has a blank column






Sep 4, 2003 8:55:27 AM net.sf.hibernate.impl.IteratorImpl next
SEVERE: could not get next result
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
	at java.lang.String.charAt(Unknown Source)
	at net.sf.hibernate.type.CharacterType.get(CharacterType.java:19)
	at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:59)
	at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:51)
	at net.sf.hibernate.type.ComponentType.nullSafeGet(ComponentType.java:139)
	at net.sf.hibernate.collection.CollectionPersister.readElement(CollectionPersister.java:377)
	at net.sf.hibernate.collection.Set.readFrom(Set.java:242)
	at net.sf.hibernate.loader.Loader.doFind(Loader.java:175)
	at net.sf.hibernate.loader.Loader.loadCollection(Loader.java:602)
	at net.sf.hibernate.loader.CollectionLoader.initialize(CollectionLoader.java:82)
	at net.sf.hibernate.impl.SessionImpl.initialize(SessionImpl.java:2897)
	at net.sf.hibernate.collection.PersistentCollection.getInitialValue(PersistentCollection.java:128)
	at net.sf.hibernate.type.PersistentCollectionType.getCollection(PersistentCollectionType.java:74)
	at net.sf.hibernate.type.PersistentCollectionType.resolveIdentifier(PersistentCollectionType.java:177)
	at net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.java:1959)
	at net.sf.hibernate.loader.Loader.doFind(Loader.java:196)
	at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:587)
	at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:42)
	at net.sf.hibernate.persister.EntityPersister.load(EntityPersister.java:396)
	at net.sf.hibernate.impl.SessionImpl.doLoad(SessionImpl.java:1889)
	at net.sf.hibernate.impl.SessionImpl.doLoadByClass(SessionImpl.java:1757)
	at net.sf.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:1716)
	at net.sf.hibernate.type.ManyToOneType.resolveIdentifier(ManyToOneType.java:62)
	at net.sf.hibernate.type.EntityType.nullSafeGet(EntityType.java:109)
	at net.sf.hibernate.impl.IteratorImpl.postNext(IteratorImpl.java:57)
	at net.sf.hibernate.impl.IteratorImpl.next(IteratorImpl.java:70)
	at test.TestHibernate.main(TestHibernate.java:94)
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
	at java.lang.String.charAt(Unknown Source)
	at net.sf.hibernate.type.CharacterType.get(CharacterType.java:19)
	at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:59)
	at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:51)
	at net.sf.hibernate.type.ComponentType.nullSafeGet(ComponentType.java:139)
	at net.sf.hibernate.collection.CollectionPersister.readElement(CollectionPersister.java:377)
	at net.sf.hibernate.collection.Set.readFrom(Set.java:242)
	at net.sf.hibernate.loader.Loader.doFind(Loader.java:175)
	at net.sf.hibernate.loader.Loader.loadCollection(Loader.java:602)
	at net.sf.hibernate.loader.CollectionLoader.initialize(CollectionLoader.java:82)
	at net.sf.hibernate.impl.SessionImpl.initialize(SessionImpl.java:2897)
	at net.sf.hibernate.collection.PersistentCollection.getInitialValue(PersistentCollection.java:128)
	at net.sf.hibernate.type.PersistentCollectionType.getCollection(PersistentCollectionType.java:74)
	at net.sf.hibernate.type.PersistentCollectionType.resolveIdentifier(PersistentCollectionType.java:177)
	at net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.java:1959)
	at net.sf.hibernate.loader.Loader.doFind(Loader.java:196)
	at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:587)
	at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:42)
	at net.sf.hibernate.persister.EntityPersister.load(EntityPersister.java:396)
	at net.sf.hibernate.impl.SessionImpl.doLoad(SessionImpl.java:1889)
	at net.sf.hibernate.impl.SessionImpl.doLoadByClass(SessionImpl.java:1757)
	at net.sf.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:1716)
	at net.sf.hibernate.type.ManyToOneType.resolveIdentifier(ManyToOneType.java:62)
	at net.sf.hibernate.type.EntityType.nullSafeGet(EntityType.java:109)
	at net.sf.hibernate.impl.IteratorImpl.postNext(IteratorImpl.java:57)
	at net.sf.hibernate.impl.IteratorImpl.next(IteratorImpl.java:70)
	at test.TestHibernate.main(TestHibernate.java:94)
rethrown as net.sf.hibernate.LazyInitializationException: Hibernate lazy instantiation problem: String index out of range: 0
	at net.sf.hibernate.impl.IteratorImpl.next(IteratorImpl.java:81)
	at test.TestHibernate.main(TestHibernate.java:94)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 0
	at java.lang.String.charAt(Unknown Source)
	at net.sf.hibernate.type.CharacterType.get(CharacterType.java:19)
	at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:59)
	at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:51)
	at net.sf.hibernate.type.ComponentType.nullSafeGet(ComponentType.java:139)
	at net.sf.hibernate.collection.CollectionPersister.readElement(CollectionPersister.java:377)
	at net.sf.hibernate.collection.Set.readFrom(Set.java:242)
	at net.sf.hibernate.loader.Loader.doFind(Loader.java:175)
	at net.sf.hibernate.loader.Loader.loadCollection(Loader.java:602)
	at net.sf.hibernate.loader.CollectionLoader.initialize(CollectionLoader.java:82)
	at net.sf.hibernate.impl.SessionImpl.initialize(SessionImpl.java:2897)
	at net.sf.hibernate.collection.PersistentCollection.getInitialValue(PersistentCollection.java:128)
	at net.sf.hibernate.type.PersistentCollectionType.getCollection(PersistentCollectionType.java:74)
	at net.sf.hibernate.type.PersistentCollectionType.resolveIdentifier(PersistentCollectionType.java:177)
	at net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.java:1959)
	at net.sf.hibernate.loader.Loader.doFind(Loader.java:196)
	at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:587)
	at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:42)
	at net.sf.hibernate.persister.EntityPersister.load(EntityPersister.java:396)
	at net.sf.hibernate.impl.SessionImpl.doLoad(SessionImpl.java:1889)
	at net.sf.hibernate.impl.SessionImpl.doLoadByClass(SessionImpl.java:1757)
	at net.sf.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:1716)
	at net.sf.hibernate.type.ManyToOneType.resolveIdentifier(ManyToOneType.java:62)
	at net.sf.hibernate.type.EntityType.nullSafeGet(EntityType.java:109)
	at net.sf.hibernate.impl.IteratorImpl.postNext(IteratorImpl.java:57)
	at net.sf.hibernate.impl.IteratorImpl.next(IteratorImpl.java:70)
	... 1 more


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