java調用kettle數據庫類型資源庫中的ktr

此問題在1個月前或許已經接觸，單是一直木有怎么用到，就被耽擱至今；問題的解決要來源於網絡，其實我還想說問題的解決更多的是要靠我們自己的思想，不過多的言情，我們接下來直接進入主題吧！

環境：kettle-spoon 4.2.0,oracle11g，myeclipse6.5，sqlserver2008

前提：在kettle圖形界面spoon里面已經做好了一個ktr轉換模型，此時我的ktr信息如下圖：

Step1：在myeclipse創建project，導入kettle集成所需要的包

 

Step2:重點解析與code源碼

//定義ktr名字

private static String transName = "test1";

//初始化kettle環境

KettleEnvironment.init();

//創建資源庫對象，此時的對象還是一個空對象
KettleDatabaseRepository repository = new KettleDatabaseRepository();
//創建資源庫數據庫對象，類似我們在spoon里面創建資源庫
DatabaseMeta dataMeta =
new DatabaseMeta("enfo_bi","Oracle","Native","ip","sid","port","username","password");
//資源庫元對象,名稱參數，id參數，描述等可以隨便定義
KettleDatabaseRepositoryMeta kettleDatabaseMeta =
new KettleDatabaseRepositoryMeta("enfo_bi", "enfo_bi", "king description",dataMeta);
//給資源庫賦值
repository.init(kettleDatabaseMeta);
//連接資源庫
repository.connect("admin","admin");
//根據變量查找到模型所在的目錄對象
RepositoryDirectoryInterface directory = repository.findDirectory("/enfo_worker/wxj");
//創建ktr元對象
TransMeta transformationMeta = ((Repository) repository).loadTransformation(transName, directory, null, true, null ) ;
//創建ktr
Trans trans = new Trans(transformationMeta);
//執行ktr
trans.execute(null);
//等待執行完畢
trans.waitUntilFinished();


上面的兩個步驟才可以確定是資源庫中的那個路徑下的ktr和我們用命令執行一樣的-dir ,-tran -job

附上源碼：

package kettle;
import org.pentaho.di.core.KettleEnvironment;
import org.pentaho.di.core.database.DatabaseMeta;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.repository.Repository;
import org.pentaho.di.repository.RepositoryDirectoryInterface;
import org.pentaho.di.repository.kdr.KettleDatabaseRepository;
import org.pentaho.di.repository.kdr.KettleDatabaseRepositoryMeta;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransMeta;
/**
 * <p>Title: java調用kettle4.2數據庫型資料庫中的轉換</p>
 * <p>Description: </p>
 * <p>Copyright: Copyright () 2012</p>
 */
public class ExecuteDataBaseRepTran {
    
    
    private static String transName = "test1";

    public static void main(String[] args) {

        try {
            //初始化kettle環境
            KettleEnvironment.init();
            //創建資源庫對象，此時的對象還是一個空對象
            KettleDatabaseRepository repository = new KettleDatabaseRepository();
            //創建資源庫數據庫對象，類似我們在spoon里面創建資源庫
            DatabaseMeta dataMeta = 
            new DatabaseMeta("enfo_bi","Oracle","Native","ip","sid","port","username","password"); 
            //資源庫元對象,名稱參數，id參數，描述等可以隨便定義
            KettleDatabaseRepositoryMeta kettleDatabaseMeta = 
            new KettleDatabaseRepositoryMeta("enfo_bi", "enfo_bi", "king description",dataMeta);
            //給資源庫賦值
            repository.init(kettleDatabaseMeta);
            //連接資源庫
            repository.connect("admin","admin");
            //根據變量查找到模型所在的目錄對象,此步驟很重要。
            RepositoryDirectoryInterface directory = repository.findDirectory("/enfo_worker/wxj");
            //創建ktr元對象
            TransMeta transformationMeta = ((Repository) repository).loadTransformation(transName, directory, null, true, null ) ;
            //創建ktr
            Trans trans = new Trans(transformationMeta);
            //執行ktr
            trans.execute(null);
            //等待執行完畢
            trans.waitUntilFinished();
            
            if(trans.getErrors()>0)
            {                   
                System.err.println("Transformation run Failure!");
            }
            else
            {
                System.out.println("Transformation run successfully!");
            }
        } catch (KettleException e) {
            e.printStackTrace(); 
        }
    }

}