HSQL 在 Hibernate 中的配置

将 HSQLDB 中lib下的hsqldb.jar文件导入到项目中
cmd 进入 HSQLDB 中 data 文件夹下,输入 java -classpath ../lib/hsqldb.jar org.hsqldb.Server 就可启动数据库。如果你希望在本例中运行一个全新的数据库,就在窗口中按下 CTRL + C来关闭 HSQL 数据库,并删除 data/ 目录下的所有文件,再重新启动 HSQL 数据库。
HSQL 在 properties 文件中的配置:
hibernate.connection.driver_class = org.postgresql.Driver
hibernate.connection.url = jdbc:postgresql://localhost/mydatabase
hibernate.connection.username = myuser
hibernate.connection.password = secret
hibernate.c3p0.min_size=5
hibernate.c3p0.max_size=20
hibernate.c3p0.timeout=1800
hibernate.c3p0.max_statements=50
hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
HSQL 在 *.cfg.xml 文件中的配置:
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>

        <!-- Database connection settings -->
        <property name="connection.driver_class">org.hsqldb.jdbcDriver</property>
        <property name="connection.url">jdbc:hsqldb:hsql://localhost</property>
        <property name="connection.username">sa</property>
        <property name="connection.password"></property>

        <!-- JDBC connection pool (use the C3P0) -->
	<property name="c3p0.min_size">5</property>
	<property name="c3p0.max_size">20</property>
	<property name="c3p0.timeout">1800</property>
	<property name="c3p0.max_statements">50</property>

        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.HSQLDialect</property>

        <!-- Enable Hibernate's automatic session context management -->
        <property name="current_session_context_class">thread</property>

        <!-- Disable the second-level cache  -->
        <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

        <!-- Echo all executed SQL to stdout -->
        <property name="show_sql">true</property>

        <!-- Drop and re-create the database schema on startup -->
        <property name="hbm2ddl.auto">update</property>
        
    </session-factory>
    
</hibernate-configuration>
 

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