/*! ******************************************************************************
 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2017 by Hitachi Vantara : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * 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.ui.spoon.partition.processor;

import org.eclipse.swt.widgets.Shell;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.exception.KettlePluginException;
import org.pentaho.di.ui.core.dialog.EnterSelectionDialog;
import org.pentaho.di.ui.spoon.partition.PartitionSettings;

/**
 * @author Evgeniy_Lyakhov@epam.com
 */
public abstract class AbstractMethodProcessor implements MethodProcessor {

  public String askForSchema( String[] schemaNames, Shell shell, int defaultSelectedSchemaIndex ) {
    EnterSelectionDialog askSchema =
      new EnterSelectionDialog(
        shell, schemaNames, "Select a partition schema", "Select the partition schema to use:" );
    return askSchema.open( defaultSelectedSchemaIndex );

  }

  public void processForKnownSchema( String schemaName, PartitionSettings settings ) throws KettlePluginException {
    if ( schemaName != null ) {
      int idx = Const.indexOfString( schemaName, settings.getSchemaNames() );
      settings.updateSchema( settings.getSchemas().get( idx ) );
    } else {
      settings.rollback( settings.getBefore() );
    }
  }


}
