OpenMappingExtension.java

/*!
 * Copyright 2010 - 2017 Pentaho Corporation.  All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package org.pentaho.di.trans.steps.metainject;

import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.extension.ExtensionPoint;
import org.pentaho.di.core.extension.ExtensionPointInterface;
import org.pentaho.di.core.logging.LogChannelInterface;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.step.StepMeta;
import org.pentaho.di.ui.spoon.SpoonLifecycleListener;

/**
 * Created by bmorrise on 7/26/16.
 */
@ExtensionPoint(
  id = "OpenMapping",
  description = "Update Trans Meta based on MetaInjectMeta being the step type",
  extensionPointId = "OpenMapping" )
public class OpenMappingExtension implements ExtensionPointInterface {

  //spoon class without import of swt libraries, big-data pmr run doesn't have ui library and shouldn't
  private static Class<?> PKG = SpoonLifecycleListener.class;

  @Override public void callExtensionPoint( LogChannelInterface log, Object object ) throws KettleException {
    StepMeta stepMeta = (StepMeta) ( (Object[]) object )[ 0 ];
    TransMeta transMeta = (TransMeta) ( (Object[]) object )[ 1 ];

    if ( stepMeta.getStepMetaInterface() instanceof MetaInjectMeta ) {
      // Make sure we don't accidently overwrite this transformation so we'll remove the filename and objectId
      // Modify the name so the users sees it's a result
      transMeta.setFilename( null );
      transMeta.setObjectId( null );
      String appendName = " (" + BaseMessages.getString( PKG, "TransGraph.AfterInjection" ) + ")";
      if ( !transMeta.getName().endsWith( appendName ) ) {
        transMeta.setName( transMeta.getName() + appendName );
      }
    }
  }
}