在Hibernate有一些相当方便的辅助工具: hbm2java,hbm2ddl, 数据库的逆向工程,Mapping Editor.
这些任务可以通过Ant构建完成,Hibernate提供了Ant Tasks及其构建脚本.由于Hibernate从2到3进行了重大重构,且包重新做了组织,因此Ant构建脚本也发生了巨大变化.在2中脚本样式为:
<?xml version="1.0"?
<project name="anto builder"
default="db" basedir="."
<!-- Set up properties containing important project directories --
<property name="source.root" value="src"/
<property name="class.root" value="classes"/
<property name="lib.dir" value="lib"/
<property name="data.dir" value="data"/
<!-- Set up the class path for compilation and execution --
<path id="project.class.path"
<!-- Include our own classes, of course --
<pathelement location="${class.root}" /
<!-- Include jars in the project library directory --
<fileset dir="${lib.dir}"
<include name="*.jar"/
</fileset
</path
<target name="db" description="Runs HSQLDB database management UIagainst the database file--use when application is not running"
<java classname="org.hsqldb.util.DatabaseManager"
fork="yes"
<classpath refid="project.class.path"/
<arg value="-driver"/
<arg value="org.hsqldb.jdbcDriver"/
<arg value="-url"/
<arg value="jdbc:hsqldb:${data.dir}/music"/
<arg value="-user"/
<arg value="sa"/
</java
</target
<!-- Teach Ant how to use Hibernate's code generation tool --
<taskdef name="hbm2java"
classname="net.sf.hibernate.tool.hbm2java.Hbm2JavaTask"
classpathref="project.class.path"/
<!-- Generate the java code for all mapping files in our source tree --
<target name="codegen"
description="Generate Java source from the O/R mapping files"
<hbm2java output="${source.root}"
<fileset dir="${source.root}"
<include name="**/*.hbm.xml"/
</fileset
</hbm2java
</target
<!-- Create our runtime subdirectories and copy resources into them --
<target name="prepare" description="Sets up build structures"
<mkdir dir="${class.root}"/
<!-- Copy our property files and O/R mappings for use at runtime --
<copy todir="${class.root}"
<fileset dir="${source.root}"
<include name="**/*.properties"/
<include name="**/*.hbm.xml"/
</fileset
</copy
</target
<!-- Compile the java source of the project --
<target name="compile" depends="prepare"
description="Compiles all Java classes"
<javac srcdir="${source.root}"
destdir="${class.root}"
debug="on"
optimize="off"
deprecation="on"
<classpath refid="project.class.path"/
</javac
</target
<!-- Generate the schemas for all mapping files in our class tree --
<target name="schema" depends="compile"
description="Generate DB schema from the O/R mapping files"
<!-- Teach Ant how to use Hibernate's schema generation tool --
<taskdef name="schemaexport"
classname="net.sf.hibernate.tool.hbm2ddl.SchemaExportTask"
classpathref="project.class.path"/
<schemaexport properties="${class.root}/hibernate.properties"
quiet="no" text="no" drop="no"
<fileset dir="${class.root}"
<include name="**/*.hbm.xml"/
</fileset
</schemaexport
</target
</project
在3中,构建脚本为:
<?xml version="1.0" encoding="GBK"?
<project name="Hibernate" default="anthbm2java" basedir="."
<property name="src.dir" value="./src" /
<property name="class.dir" value="./bin" /
<property name="lib.dir" value="D:/eclipse/plugins/org.hibernate.eclipse_3.0.0.alpha4/lib" /
<path id="project.class.path"
<fileset dir="${lib.dir}"
<include name="*.jar"/
</fileset
<pathelement location="${class.dir}" /
</path
<path id="tasks.classpath"
<fileset dir="${lib.dir}"
<include name="*.jar"/
</fileset
<pathelement location="${class.dir}" /
</path
<target name="anthbm2java"
<taskdef name="hibernatetool"
classname="org.hibernate.tool.ant.HibernateToolTask"
classpathref="tasks.classpath"/
<hibernatetool destdir="${class.dir}"
<configuration configurationfile="hibernate.cfg.xml"
<fileset dir="${src.dir}"
<include name="**/*.hbm.xml" /
</fileset
</configuration
<hbm2ddl export="false" console="false" create="true" update="false" drop="false" outputfilename="broad.sql" delimeter=";"/
其中的delimeter属性在Hibernate-Tool 3 A5版本中不支持.
<hbm2java generics="true" ejb3="false"/
<cfg2hbm/
<hbm2doc/
<!--
<cfg2cfgXml/
这个任务在Hibernate-Tool 3 A5版本中不支持.
--
</hibernatetool
</target
</project Hibernate3构建脚本的变化
这个脚本在Eclipse中检验过.
通过这个脚本,执行了很多Hibernate辅助工具的功能,方便了开发.
