hi everyone,

while i am executing hibernate program , the program throw the exception

please help me.
i am new to hibernate concepts.
It is very urgent requuirement.

regrads,
Sundarrajan

Exception


[b]Start execution
log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.
Exception occur:Could not parse mapping document from resource event/Sample.hbm.xml
org.hibernate.InvalidMappingException: Could not parse mapping document from resource event/Sample.hbm.xml
at org.hibernate.cfg.Configuration.addResource(Configuration.java:575)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1593)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1561)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1540)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1514)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1434)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1420)
at Test.main(Test.java:16)
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from invalid mapping
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:508)
at org.hibernate.cfg.Configuration.addResource(Configuration.java:572)
... 7 more
Caused by: org.xml.sax.SAXParseException: The content of element type "class" must match "(meta*,subselect?,cache?,synchronize*,comment?,tuplizer*,(id|composite-id),discriminator?,natural-id?,(version|timestamp)?,(property|many-to-one|one-to-one|component|dynamic-component|properties|any|map|set|list|bag|idbag|array|primitive-array)*,((join*,subclass*)|joined-subclass*|union-subclass*),loader?,sql-insert?,sql-update?,sql-delete?,filter*,resultset*,(query|sql-query)*)".
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at org.dom4j.io.SAXReader.read(SAXReader.java:465)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:505)
... 8 more
Exception in thread "main" java.lang.NullPointerException
at Test.main(Test.java:30)
[/b]

the hbm.xml is not correct. Read the saxparse exception carefully, you might have a bad order in your xml tags.

hi
thank u

this is my hbm.xml file

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

<hibernate-mapping package="event">
<class
name="Sample"
table="sample"
>
<meta attribute="sync-DAO">true</meta>

<property
name="Id"
column="id"
type="integer"
not-null="false"
length="11"
/>
<property
name="Name"
column="name"
type="string"
not-null="false"
length="50"
/>


</class>
</hibernate-mapping>

id tag is missing. You used property instead.

id tag is missing. You used property instead.