链接地址:
http://kevin12.iteye.com/blog/1949491
问题如下:
九月 30, 2013 2:24:14 下午 org.jbpm.internal.log.Jdk14Log info
信息: exception while executing command org.jbpm.pvm.internal.cmd.CheckDbCmd@2bfb3f37
org.jbpm.api.JbpmException: no jBPM DB schema: no JBPM4_EXECUTION table. Run the create.jbpm.schema target first in the install tool.
at org.jbpm.pvm.internal.cmd.CheckDbCmd.execute(CheckDbCmd.java:50)
at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)
at org.jbpm.pvm.internal.tx.SpringCommandCallback.doInTransaction(SpringCommandCallback.java:45)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
at org.jbpm.pvm.internal.tx.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:49)
at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)
at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)
at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:56)
at org.jbpm.pvm.internal.processengine.ProcessEngineImpl.checkDb(ProcessEngineImpl.java:152)
at org.jbpm.pvm.internal.processengine.SpringProcessEngine.create(SpringProcessEngine.java:70)
at org.jbpm.pvm.internal.cfg.ConfigurationImpl.buildProcessEngine(ConfigurationImpl.java:90)
at org.jbpm.pvm.internal.processengine.SpringHelper.createProcessEngine(SpringHelper.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
最近将jbpm4.4项目用的数据库由sqlserver改成oracle 11g的,在配置hibernate时候出现了上面的错误,在网上没有查到原因,但是根据打印的错误仔细分析后,猜测可能是数据库方言的问题,因为之前将sqlserver数据库改成mysql时候有过类似的问题,只不过当时没有记录下来,现在记录一下,以防后用。
hibernate连接不同数据库有不同的方言,下面列出来如下:
mysql的方言:
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
sqlserver的方言:
<property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
oracle 的方言:
<property name="dialect">org.hibernate.dialect.OracleDialect</property>
但是配置好相应数据库的方言后,项目就可以正常运行了,但是有一个地方要注意的是,在java项目中执行数据库的增删改查时候有时候数据库字段类型和java的数据类型转换会出现问题,这时候就要重新方言了,下面我列出重写mysql和sqlserver方言的例子:
也可以参考我之前写的帖子:
http://kevin12.iteye.com/blog/1815460
对于mysql的:
package com.sense.workflow.util;
import java.sql.Types;
import org.hibernate.Hibernate;
import org.hibernate.dialect.MySQLInnoDBDialect;
/**
* mysql注册类型映射
* @author lujinyong
*
*/
public class ExtMySQL5Dialect extends MySQLInnoDBDialect{
public ExtMySQL5Dialect(){
super();
this.registerHibernateType(Types.LONGVARCHAR, Hibernate.STRING.getName());
}
}
对于sqlserver的:
package com.sense.workflow.util;
import java.sql.Types;
import org.hibernate.Hibernate;
import org.hibernate.dialect.SQLServerDialect;
/**
* sqlserver2008注册类型映射
* @author lujinyong
*
*/
public class SqlServer2008Dialect extends SQLServerDialect{
public SqlServer2008Dialect() {
super();
registerHibernateType(Types.CHAR, Hibernate.STRING.getName());
registerHibernateType(Types.VARCHAR, Hibernate.STRING.getName());
registerHibernateType(Types.LONGVARCHAR, Hibernate.STRING.getName());
registerHibernateType(Types.DECIMAL, Hibernate.DOUBLE.getName());
registerHibernateType(Types.LONGVARCHAR, Hibernate.TEXT.getName());
}
}
在hibernate中的引用如下:
<prop key="hibernate.dialect">com.sense.workflow.util.ExtMySQL5Dialect </prop>
<prop key="hibernate.dialect">com.sense.workflow.util.SqlServer2008Dialect</prop>
oracle的暂时还没有写,以后添加上。
链接地址:
http://kevin12.iteye.com/blog/1949491