Finding jdbc driver class problem with liquibase, ant - ant

Question

Here is an example of my ant xml file:
<!--A reference to the classpath that contains the database driver, liquibase.jar, and the changelog.xml file-->
<path id="liquibase.classpath.id">
<pathelement location="${PROJECT_DIR}/lib/liquibase-2.0.2.jar"/>
<pathelement location="${jdbc.classpath}"/>
<fileset dir="${PROJECT_DIR}/db/changelog" includes="db.changelog*.xml"/>
</path>
<pathconvert refid="liquibase.classpath.id" property="liquibase.classpath.id.text" />
<echo message="${liquibase.classpath.id.text}" />
<updateDatabase loglevel="debug"
changeLogFile="${db.changelog.file}"
driver="${jdbc.driver}"
url="${jdbc.url}"
username="${database.username}"
password="${database.password}"
dropFirst="false"
classpathref="liquibase.classpath.id"
/>
I'm getting the following output from <echo message="${liquibase.classpath.id.text}" /> as expected:
G:\My Documents\PROJECTS\DataSource\lib\liquibase-2.0.2.jar;
G:\My Documents\PROJECTS\DataSource\lib\hsqldb-2.2.5.jar;;
G:\My Documents\PROJECTS\DataSource\db\changelog\db.changelog-1.0.xml;
G:\My Documents\PROJECTS\DataSource\db\changelog\db.changelog-master.xml
But updateDatabase throws the following exception:
java.lang.ClassNotFoundException: org.hsqldb.jdbc.JDBCDriver
What am I doing wrong? Please tell me.

Answer 1

I can't see where you're defining the value for jdbc.driver, but the class name should be org.hsqldb.jdbc.JDBCDriver, not org.hsqldb.jdbcDriver

Answer 2

Is that the name of hsqldb's driver? Docs I've seen show org.hsqldb.jdbc.JDBCDriver.

Answer 3

As already pointed out, the JDBC driver should be org.hsqldb.jdbc.JDBCDriver. I think your second problem is that ANT cannot find your hsqldb jar file. You absolutely sure the path is correct?
Here's my working example (I delegate classpath management to the ivy plug-in).
liquibase.properties
url=jdbc:hsqldb:file:build/testdb
driver=org.hsqldb.jdbc.JDBCDriver
username=sa
password=""
build.xml
<project basedir="." default="build" xmlns:ivy="antlib:org.apache.ivy.ant">
<!--
====================
Properties and paths
====================
-->
<property file="liquibase.properties" prefix="db"/>
<property name="build.dir" location="build"/>
<property name="db.changelog.file" location="src/scottTiger.xml"/>
<!--
=======
Targets
=======
-->
<target name="init" description="Download 3rd party dependencies">
<ivy:resolve/>
<ivy:cachepath pathid="ant.path" conf="ant"/>
<mkdir dir="${build.dir}"/>
</target>
<target name="build" depends="init" description="Create the database">
<taskdef resource="liquibasetasks.properties" classpathref="ant.path"/>
<fail unless="db.changelog.file">db.changelog.file not set</fail>
<fail unless="db.url">db.url not set</fail>
<fail unless="db.driver">db.driver not set</fail>
<fail unless="db.username">db.username not set</fail>
<fail unless="db.password">db.password not set</fail>
<updateDatabase
changeLogFile="${db.changelog.file}"
driver="${db.driver}"
url="${db.url}"
username="${db.username}"
password="${db.password}"
promptOnNonLocalDatabase="false"
dropFirst="false"
classpathref="ant.path"
/>
</target>
<target name="clean" description="Cleanup all built files">
<delete dir="${build.dir}"/>
</target>
<target name="clean-all" depends="clean">
<ivy:cleancache/>
</target>
</project>
ivy.xml
Build is configured to download the latest release versions, available from Maven Central
<ivy-module version="2.0">
<info organisation="com.myspotontheweb" module="scott-tiger"/>
<configurations defaultconfmapping="ant->default">
<conf name="ant" description="Ant build dependencies"/>
</configurations>
<dependencies>
<dependency org="org.liquibase" name="liquibase-core" rev="latest.release"/>
<dependency org="org.hsqldb" name="hsqldb" rev="latest.release"/>
</dependencies>
</ivy-module>