kettle 3:java调用transformation
/**
* 调用资源库中的trans
*
* @throws KettleException
*/
public void executeTrans() throws KettleException {
// 初始化
EnvUtil.environmentInit();
StepLoader.init();
// 日志
LogWriter log = LogWriter.getInstance("TransTest.log", true,
LogWriter.LOG_LEVEL_DETAILED);
// 用户
UserInfo userInfo = new UserInfo();
userInfo.setLogin("admin");
userInfo.setPassword("admin");
// 数据库连接元对象
DatabaseMeta connection = new DatabaseMeta("merit113", "Oracle",
"Native", "localhost", "merit113", "1521", "kettle", "merit");
// 资源库元对象
RepositoryMeta repinfo = new RepositoryMeta();
repinfo.setConnection(connection);
// 资源库
Repository rep = new Repository(log, repinfo, userInfo);
// 连接资源库
rep.connect("");
// 资源库目录对象
RepositoryDirectory dir = new RepositoryDirectory(rep);
// 转换元对象
TransMeta transMeta = new TransMeta(rep, "code_trans", dir);
// 转换
Trans trans = new Trans(transMeta);
// 执行转换
trans.execute(null);
// 等待转换执行结束
trans.waitUntilFinished();
}
/**
* 调用本地trans
*
* @param transFileName
* trans文件路径
* @throws KettleException
*/
public void callNativeTrans(String transFileName) throws KettleException {
// 初始化
EnvUtil.environmentInit();
StepLoader.init();
// 转换元对象
TransMeta transMeta = new TransMeta(transFileName);
// 转换
Trans trans = new Trans(transMeta);
// 执行转换
trans.execute(null);
// 等待转换执行结束
trans.waitUntilFinished();
}
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