I am using 3.1.2 hibernate and tools 3.1 beta 4 (tried beta2 also).

I am new to Hibernate and I spent quite a while searching around for a while at google and here. I am stuck with a simple problem.

I have a "Book.hbm.xml" and I want to generate "Book.java" using "hibernatetool".

I have ant tasks defined and i got past all the "classpath" issues. Now the hibernate tries to instantiate "Book", which is the class I am trying to generate. Somehow I am not telling it to generate. I am suspecting that I am not specifying something in the cfg.xml. I dont know what.

The Book.hbm.xml is

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

<hibernate-mapping>

<class name="Book" table="BOOK">
<meta attribute="class-description">
A Book business object.
@author Duke
</meta>
<id name="id" type="string" unsaved-value="null" >
<column name="BOOK_ID" sql-type="char(32)" not-null="true"/>
<generator class="uuid.hex"/>
</id>

<property column="BOOK_NAME" name="name"/>
<property column="BOOK_ISBN" name="isbn">
<meta attribute="field-description">
The unique ISBN code for this book.
</meta>
</property>
</class>

</hibernate-mapping>


The hibernate.cfg.xml is

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory name="AutoSchoolHibernate">
<property name="hibernate.connection.driver_class">com.microsoft.jdbc.sqlserver.SQLServerDriver</property>
<property name="hibernate.connection.password">password</property>
<property name="hibernate.connection.url">jdbc:microsoft:sqlserver://server=localhost;port=1433;DatabaseName=interlacemain;SelectMethod=cursor</property>
<property name="hibernate.connection.username">interlace</property>
<property name="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</property>

</session-factory>
</hibernate-configuration>



The ant file:


<taskdef name="hibernatetool"
classname="org.hibernate.tool.ant.HibernateToolTask">
<classpath>
<fileset
dir="${eclipse.root}/plugins/org.hibernate.eclipse_3.1.0.beta4/lib/tools">
<include name="hibernate-tools.jar"/>
<include name="velocity-1.4.jar"/>
<include name="velocity-tools-generic-1.4.jar"/>
<include name="jtidy-r8-21122004.jar"/>
</fileset>
<fileset dir="${interlace.install.root}/lib">
<include name="hibernate.jar"/>
<include name="msbase.jar"/>
<include name="mssqlserver.jar"/>
<include name="msutil.jar"/>
<include name="asm-attrs.jar"/>
<include name="asm.jar"/>
<include name="c3p0-0.9.0.jar"/>
<include name="cglib-2.1.3.jar"/>
<include name="concurrent-1.3.2.jar"/>
<include name="connector.jar"/>
<include name="dom4j-1.6.1.jar"/>
<include name="ehcache-1.1.jar"/>
<include name="jaas.jar"/>
<include name="jacc-1_0-fr.jar"/>
<include name="jaxen-1.1-beta-7.jar"/>
<include name="jboss-common.jar"/>
<include name="jboss-jmx.jar"/>
<include name="jboss-system.jar"/>
<include name="jgroups-2.2.8.jar"/>
<include name="jta.jar"/>
<include name="oscache-2.1.jar"/>
<include name="proxool-0.8.3.jar"/>
<include name="swarmcache-1.0rc2.jar"/>
<include name="syndiag2.jar"/>
<include name="xml-apis.jar"/>
<include name="commons-collections.jar"/>
</fileset>
<path location="${interlace.product.root}"/>
</classpath>
</taskdef>
<mkdir dir="${src.generated.dir}"/>
<mkdir dir="${src.generated.dir}/@{packagedir}"/>
<hibernatetool destdir="@{target}">
<configuration configurationfile="@{configFile}">
<fileset dir="hibernate">
<include name="**/*.hbm.xml"/>
</fileset>
</configuration>
<hbm2java/>
</hibernatetool>
=============
The error msg I am getting is:

Caused by: org.hibernate.MappingException: Could not read mapping document from file: C:\work\programs\autoschool\base\main\hibernate\basic\Book.hbm.xml
at org.hibernate.cfg.Configuration.addFile(Configuration.java:270)
at org.hibernate.tool.ant.ConfigurationTask.addFile(ConfigurationTask.java:140)
... 37 more
Caused by: org.hibernate.MappingException: class Book not found while looking for property: name
at org.hibernate.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:80)
at org.hibernate.mapping.SimpleValue.setTypeUsingReflection(SimpleValue.java:276)
at org.hibernate.cfg.HbmBinder.createProperty(HbmBinder.java:2138)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2115)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2005)
at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:368)
at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:282)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:153)
at org.hibernate.cfg.Configuration.add(Configuration.java:386)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:427)
at org.hibernate.cfg.Configuration.addFile(Configuration.java:267)
... 38 more
Caused by: java.lang.ClassNotFoundException: Book
at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1166)
at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1107)
at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:977)
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 org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:108)
at org.hibernate.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:76)
... 48 more
--- Nested Exception ---

Thanks
Kumar

pretty hard for the hbm2java code generation to know which type you want for the name when you don't specify one, correct ? :)

try <property name="name" type="string" ... /> and you will see that hibernate does not try to use reflection to get the type.

Thanks a lot. That worked.