reading the 2008 Harnessing Hibernate

the first example

when I ran and db (which requires the classpath) or ant prepare - it ran OK

but when I ran ant schema - got the following error

BUILD FAILED
org.hibernate.HibernateException: Dialect class not found: org.hibernate.dialect.HSQLDialect hibernate.connection.driver_class=org.hsqldb.jdbcDriver
at org.hibernate.dialect.Dialect.instantiateDialect(Dialect.java:239)
at org.hibernate.dialect.Dialect.getDialect(Dialect.java:228)
at org.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:86)
at org.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:61)
at org.hibernate.tool.hbm2x.Hbm2DDLExporter.doStart(Hbm2DDLExporter.java:78)
at org.hibernate.tool.hbm2x.AbstractExporter.start(AbstractExporter.java:95)
at org.hibernate.tool.ant.ExporterTask.execute(ExporterTask.java:40)
at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:186)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
at org.apache.tools.ant.Main.runBuild(Main.java:758)
at org.apache.tools.ant.Main.startAnt(Main.java:217)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)

in build.xml
<artifact:dependencies pathId="dependency.classpath">
<dependency groupId="hsqldb" artifactId="hsqldb" version="1.8.0.7"/>
<dependency groupId="org.hibernate" artifactId="hibernate"
version="3.2.6.ga">
<exclusion groupId="javax.transaction" artifactId="jta"/>
</dependency>
<dependency groupId="org.hibernate" artifactId="hibernate-tools"
version="3.2.3.GA"/>
<dependency groupId="org.apache.geronimo.specs"
artifactId="geronimo-jta_1.1_spec" version="1.1"/>
<dependency groupId="log4j" artifactId="log4j" version="1.2.14"/>
</artifact:dependencies>
<!-- Set up the class path for compilation and execution -->
<path id="project.class.path">
<pathelement location="${class.root}" />
<path refid="dependency.classpath"/>
</path>

<!-- Teach Ant how to use the Hibernate Tools -->
<taskdef name="hibernatetool"
classname="org.hibernate.tool.ant.HibernateToolTask"
classpathref="project.class.path"/>

/>

this obviously set the classpath

can you please let me know what is wrong?


Thanks


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There's something wrong in your hibernate configuration file where you define the dialect.
Please check the syntax.

The only file I changed is build.xml...what is the configure file you are talking about.

Thanks a lot.

hibernate.dialect=org.hibernate.dialect.HSQLDialect
hibernate.connection.driver_class=org.hsqldb.jdbcDriver
hibernate.connection.url=jdbc:hsqldb:data/music
hibernate.connection.username=sa
hibernate.connection.password=
hibernate.connection.shutdown=true


This is property file - it is exactly the same as the book example

Hi puma123,



Instead to search for class "org.hibernate.dialect.HSQLDialect"
hibernate searches for class
"org.hibernate.dialect.HSQLDialect hibernate.connection.driver_class=org.hsqldb.jdbcDriver"
which obvious doesn't correspond to a class.
This means that in your configuration file the value for the dialect "org.hibernate.dialect.HSQLDialect"
isn't clearly delimited so hibernate takes, consider also as value that what is following immediately after,
which is "hibernate.connection.driver_class=org.hsqldb.jdbcDriver".
Therefore there must be an error in the syntax.
How is the name of your hibernate configuration file?
(If it has suffix .xml then your current syntax is wrong)

good observation - now I have the following error ( the wierd thing is I have to put hibernate.jar, log4j.jar. commons-logging.jar etc. into Classpath to even reach here and the ant build.xml already have classpath dependency defined for ant!)

the configuration file is hibernate.properties and I have to put it on system classpath too... can you give further advice

Thanks.

- id=central, url=http://repo1.maven.org/maven2, releases=enabled, snapshots=disabled
org.apache.maven:super-pom:jar:2.0 (selected)

...........................
hsqldb:hsqldb:jar:1.8.0.7:compile (selected)
org.hibernate:hibernate:jar:3.2.5.ga:compile (selected)
net.sf.ehcache:ehcache:jar:1.2.3:compile (selected)
commons-logging:commons-logging:jar:1.0.4:compile (selected)
commons-collections:commons-collections:jar:2.1:compile (selected)
commons-logging:commons-logging:jar:1.0.4:compile (removed - nearer found: 1.0.4)
commons-logging:commons-logging:jar:1.0.4:compile (selected)
asm:asm-attrs:jar:1.5.3:compile (selected)
dom4j:dom4j:jar:1.6.1:compile (selected)
antlr:antlr:jar:2.7.6:compile (selected)
cglib:cglib:jar:2.1_3:compile (selected)
asm:asm:jar:1.5.3:compile (selected)
asm:asm:jar:1.5.3:compile (removed - nearer found: 1.5.3)
asm:asm:jar:1.5.3:compile (selected)
commons-collections:commons-collections:jar:2.1:compile (removed - nearer found: 2.1.1)
commons-collections:commons-collections:jar:2.1.1:compile (selected)
org.hibernate:hibernate-tools:jar:3.2.0.beta9a:compile (selected)
org.hibernate:hibernate:jar:3.2.0.cr5:compile (removed - nearer found: 3.2.5.ga)
freemarker:freemarker:jar:2.3.4:compile (selected)
org.hibernate:jtidy:jar:r8-20060801:compile (selected)
org.apache.geronimo.specs:geronimo-jta_1.1_spec:jar:1.1:compile (selected)
log4j:log4j:jar:1.2.14:compile (selected)
Build sequence for target(s) `schema' is [prepare, schema]
Complete build sequence is [prepare, schema, db, codegen, ]

prepare:
.......................................................

schema:
[hibernatetool] Executing Hibernate Tool with a Standard Configuration
[hibernatetool] 1. task: hbm2ddl (Generates database schema)
[hibernatetool] log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
[hibernatetool] log4j:WARN Please initialize the log4j system properly.
[hibernatetool] An exception occurred while running exporter #2:hbm2ddl (Generates database schema)
[hibernatetool] To get the full stack trace run ant with -verbose
[hibernatetool] org.hibernate.HibernateException: Dialect class not found: org.hibernate.dialect.HSQLDialect

BUILD FAILED
org.hibernate.HibernateException: Dialect class not found: org.hibernate.dialect.HSQLDialect
at org.hibernate.dialect.Dialect.instantiateDialect(Dialect.java:239)
at org.hibernate.dialect.Dialect.getDialect(Dialect.java:228)
at org.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:86)
at org.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:61)
at org.hibernate.tool.ant.Hbm2DDLExporterTask.execute(Hbm2DDLExporterTask.java:45)
at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:183)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
at org.apache.tools.ant.Main.runBuild(Main.java:758)
at org.apache.tools.ant.Main.startAnt(Main.java:217)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)

Total time: 2 seconds

The class is on classpath since the following test found the class (just there is no a main method in that class)....

~/study/examples/ch02$ java org.hibernate.dialect.HSQLDialect
Exception in thread "main" java.lang.NoSuchMethodError: main

Yes.
org.hibernate.dialect.HSQLDialect is in hiberante3.jar
and hiberante3.jar is definitely contained in classpath, because it finds other classes for example
org.hibernate.dialect.Dialect which is also contained in hibernate3.jar


The problem is probably that you specified a additional blank before or after the class specification.
I believe you specified


(=with a dangling blank) instead to

Thanks.

Now I got this in Chap10.

/examples/ch10/src/com/oreilly/hh/CreateTest.java:73: cannot find symbol
[javac] symbol : constructor Track(java.lang.String,java.lang.String,java.sql.Time,java.util.HashSet<com.oreilly.hh.data.Artist>,java.util.Date,com.oreilly.hh.StereoVolume,com.oreilly.hh.SourceMedia,java.util.HashSet<java.lang.String>)
[javac] location: class com.oreilly.hh.data.Track
[javac] track = new Track("Video Killed the Radio Star",


The signature of constructor in Track.java generated from Track.hbm.xml is
public Track(String title, String filePath, Date playTime, Set<Artist> artists, Date added, StereoVolumeType volume, SourceMediaType sourceMedia, Set<String> comments) {^M



The constructor in Track.java is like this

Track track = new Track(title, file, length, new HashSet<Artist>(),
new Date(), new StereoVolume(), SourceMedia.CD,
new HashSet<String>());


the type of new StereoVolume(), SourceMedia.CD are incompatiblet...

why will this happen and how to fix it?