Hibernate version: 2.1


Problem 1

After creating a few of mapping files, I run the command "hbm2java" to generate the Java files. I have the following warning messages.

[hbm2java] log4j:WARN No appenders could be found for logger (net.sf.hibernate.util.DTDEntit
yResolver).
[hbm2java] log4j:WARN Please initialize the log4j system properly.

The log related jar files, namingly common-logging, log4j are in the same directory as hibernate2.jar.

What I don't do it right here?


Problem 2

When I run the "init-db" targe, I get an error as the following:

C:\ss\build.xml:94: Schema text failed: net.sf.hibernate.MappingException: persiste
nt class [...] not found

<target name="init-db">
<taskdef classname="net.sf.hibernate.tool.hbm2ddl.SchemaExportTask"
name="schemaexport" classpathref="lib.class.path"/>

<schemaexport delimiter=";"
drop="false"
output="schema-export.sql"
properties="hibernate.properties"
quiet="false"
text="false"> <-- line 94
<fileset dir="${src.dir}">
<include name="**/*.hbm.xml"/>
</fileset>
</schemaexport>
</target>


Thanks in advance.

Problem 1
This is an issue related to the configuration of the Log4J package. Please check their documentation (hint: you miss a log4j.properties in your classpath).


Problem 2
The SchemaExportTask needs access to your classes - so they must be available in the classpath. Include them in the classpath of the SchemaExportTask task definition (check Ant doc for more information if needed).

Thanks very much bertrand for your response.


After I add another log4j properties specially for the hibernate task, I get another error as the followings:

hbm2java:
[hbm2java] Processing 4 files.
[hbm2java] Building hibernate objects
[hbm2java] java.util.zip.ZipException: error in opening zip file
[hbm2java] at java.util.zip.ZipFile.open(Native Method)
[hbm2java] at java.util.zip.ZipFile.<init>(Unknown Source)
[hbm2java] at java.util.zip.ZipFile.<init>(Unknown Source)
[hbm2java] at org.apache.tools.ant.AntClassLoader.getResourceURL(AntClassLoader.java:903
)
[hbm2java] at org.apache.tools.ant.AntClassLoader.getResource(AntClassLoader.java:832)
[hbm2java] at org.apache.log4j.helpers.Loader.getResource(Loader.java:91)
[hbm2java] at org.apache.log4j.LogManager.<clinit>(LogManager.java:94)
[hbm2java] at org.apache.log4j.Logger.getLogger(Logger.java:85)
[hbm2java] at org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:229
)
[hbm2java] at org.apache.commons.logging.impl.Log4JLogger.<init>(Log4JLogger.java:65)
[hbm2java] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[hbm2java] at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
[hbm2java] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
[hbm2java] at java.lang.reflect.Constructor.newInstance(Unknown Source)
[hbm2java] at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.
java:529)
[hbm2java] at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.
java:235)
[hbm2java] at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.
java:209)
[hbm2java] at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
[hbm2java] at net.sf.hibernate.tool.hbm2java.CodeGenerator.<clinit>(CodeGenerator.java:3
2)
[hbm2java] at net.sf.hibernate.tool.hbm2java.Hbm2JavaTask.processFile(Hbm2JavaTask.java:
145)
[hbm2java] at net.sf.hibernate.tool.hbm2java.Hbm2JavaTask.execute(Hbm2JavaTask.java:95)
[hbm2java] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:269)
[hbm2java] at org.apache.tools.ant.Task.perform(Task.java:364)
[hbm2java] at org.apache.tools.ant.Target.execute(Target.java:301)
[hbm2java] at org.apache.tools.ant.Target.performTasks(Target.java:328)
[hbm2java] at org.apache.tools.ant.Project.executeTarget(Project.java:1215)
[hbm2java] at org.apache.tools.ant.Project.executeTargets(Project.java:1063)
[hbm2java] at org.apache.tools.ant.Main.runBuild(Main.java:632)
[hbm2java] at org.apache.tools.ant.Main.startAnt(Main.java:183)
[hbm2java] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:197)
[hbm2java] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:56)
[hbm2java] java.util.zip.ZipException: error in opening zip file
. . .

I guess that the tar file can't be opened for some reasons. What is the cause if my guess is right?



Do you imply that the SchemaExportTask is depended on compiling the Java source code? I don't see such dependence relationship in the build.xml files of the examples came with the hibernate installation.