hibernate-3.1


I am just learning Hibernate. I am trying to use Hibernate tools to generate some DDL.

I get the following error:
BUILD FAILED
C:\projects\htest\build.xml:30: Schema text failed: Could not read mapping document from file: C:\projects\htest\src\AuctionItem.hbm.xml

Up this point, Log4J was indicating success(I think):
C:\projects\htest>ant schemaexport
Buildfile: build.xml

schemaexport:
[schemaexport] 21:56:10,759 INFO Environment:474 - Hibernate 3.1 rc3
[schemaexport] 21:56:10,759 INFO Environment:489 - loaded properties from resou
rce hibernate.properties: {hibernate.connection.username=root, hibernate.connect
ion.password=****, hibernate.cglib.use_reflection_optimizer=true, hibernate.dial
ect=org.hibernate.dialect.MySQLDialect, hibernate.connection.url=jdbc:mysql://lo
calhost/test, hibernate.connection.driver_class=com.mysql.jdbc.Driver}
[schemaexport] 21:56:10,759 INFO Environment:520 - using CGLIB reflection optim
izer
[schemaexport] 21:56:10,759 INFO Environment:550 - using JDK 1.4 java.sql.Times
tamp handling
[schemaexport] 21:56:10,837 INFO Configuration:238 - Reading mappings from file
: C:\projects\htest\src\AuctionItem.hbm.xml
[schemaexport] 21:56:11,055 INFO HbmBinder:265 - Mapping class: org.hibernate.a
uction.AuctionItem -> AuctionItem

I have copied AuctionItem.hbm.xml and AuctionItem.java from the Hibernate Samples (eg) into a project/src directory.

I am using the SchemaExport ant task from the docs:
<target name="schemaexport">
<taskdef name="schemaexport"
classname="org.hibernate.tool.hbm2ddl.SchemaExportTask"
classpathref="class.path"/>

<schemaexport
properties="hibernate.properties"
quiet="no"
text="no"
drop="no"
delimiter=";"
output="schema-export.sql">
<fileset dir="src">
<include name="**/*.hbm.xml"/>
</fileset>
</schemaexport>
</target>


I get the same error with any mapping xml I provide.

Thanks in advance for any assistance or guidance.



[Hibernate.properties]
hibernate.connection.driver_class=com.mysql.jdbc.Driver
hibernate.connection.url=jdbc:mysql://localhost/test
hibernate.connection.username=user
hibernate.connection.password=*********
hibernate.dialect=org.hibernate.dialect.MySQLDialect

run with ant -debug to get the full stacktrace.

I assume its simply because you dont have the pojo classes in the classpath.

Thanks for the quick reply - I am trying to run schemaexport on a similar machine (different configuration at work).

I did not have the pojos in the classpath before, now I do but I get:


schemaexport:
[schemaexport] 10:17:05,296 ERROR Configuration:232 - Could not configure datast
ore from file: F:\scratch\src\rgc\Message.hbm.xml
[schemaexport] org.dom4j.DocumentException: hibernate.sourceforge.net Nested exc
eption: hibernate.sourceforge.net
[schemaexport] at org.dom4j.io.SAXReader.read(SAXReader.java:484)
[schemaexport] at org.dom4j.io.SAXReader.read(SAXReader.java:264)
[schemaexport] at org.hibernate.cfg.Configuration.addFile(Configuration.java:22
6)
[schemaexport] at org.hibernate.tool.hbm2ddl.SchemaExportTask.getConfiguration(
SchemaExportTask.java:195)
[schemaexport] at org.hibernate.tool.hbm2ddl.SchemaExportTask.execute(SchemaExp
ortTask.java:135)
[schemaexport] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.ja
va:275)
[schemaexport] at org.apache.tools.ant.Task.perform(Task.java:364)
[schemaexport] at org.apache.tools.ant.Target.execute(Target.java:341)
[schemaexport] at org.apache.tools.ant.Target.performTasks(Target.java:369)
[schemaexport] at org.apache.tools.ant.Project.executeTarget(Project.java:1214)

[schemaexport] at org.apache.tools.ant.Project.executeTargets(Project.java:1062
)
[schemaexport] at org.apache.tools.ant.Main.runBuild(Main.java:673)
[schemaexport] at org.apache.tools.ant.Main.startAnt(Main.java:188)
[schemaexport] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:196)
[schemaexport] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:55)
[schemaexport] Nested exception:
[schemaexport] java.net.UnknownHostException: hibernate.sourceforge.net
[schemaexport] at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
[schemaexport] at java.net.Socket.connect(Socket.java:507)

I think this may be caused because my current environment accesses the net through an http proxy. Can I configure schemaexport to use an http proxy for the dtd lookup?

Thanks again for your help.

no - you most likely have references to hibernate 2 DTD's instead of Hibernate 3 DTD's

Woot!

You are truly the hibernate master! I finally got it working.....


Thanks again for your help

Oh man! I just came and searched and found this thread. I had no idea I was supposed to change the dtd in my existing hbm's when I upgraded from 2 to 3.

I had no problems until today, when all of a sudden I started getting the connection timeout error -- on previously working code.

Did the search, found this thread, changed my 40 .hbm files to 3.0 instead of 2.0 -- and MAN -- my start time shrank to near nothing.

It's been such a hassle stopping and starting my app anytime I changed a public method or property....watching each of the data classes take it's time to load.

No more! It's lightening fast.

Lee

Lesson learned: Always read the migration and/or installation guide when upgrading major versions of software - this one is the *very* first item in that documentation.

My bad. While not the FIRST thing on the list I see at: http://www.hibernate.org/250.html#A26 -- it is there -- and I overlooked it.

All is good now :)

Lee