TransformationHasNoDisabledHopsImportRule.java

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 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2013 by Pentaho : 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
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package org.pentaho.di.imp.rules;

import java.util.ArrayList;
import java.util.List;

import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.xml.XMLHandler;
import org.pentaho.di.imp.rule.ImportRuleInterface;
import org.pentaho.di.imp.rule.ImportValidationFeedback;
import org.pentaho.di.imp.rule.ImportValidationResultType;
import org.pentaho.di.trans.TransHopMeta;
import org.pentaho.di.trans.TransMeta;
import org.w3c.dom.Node;

public class TransformationHasNoDisabledHopsImportRule extends BaseImportRule implements ImportRuleInterface {

  public TransformationHasNoDisabledHopsImportRule() {
    super();
  }

  @Override
  public List<ImportValidationFeedback> verifyRule( Object subject ) {

    List<ImportValidationFeedback> feedback = new ArrayList<ImportValidationFeedback>();

    if ( !isEnabled() ) {
      return feedback;
    }
    if ( !( subject instanceof TransMeta ) ) {
      return feedback;
    }

    TransMeta transMeta = (TransMeta) subject;

    for ( int i = 0; i < transMeta.nrTransHops(); i++ ) {
      TransHopMeta hop = transMeta.getTransHop( i );
      if ( !hop.isEnabled() ) {
        feedback.add( new ImportValidationFeedback(
          this, ImportValidationResultType.ERROR, "There is a disabled hop in the transformation." ) );
      }
    }

    if ( feedback.isEmpty() ) {
      feedback.add( new ImportValidationFeedback(
        this, ImportValidationResultType.APPROVAL, "All hops are enabled in this transformation." ) );
    }

    return feedback;
  }

  @Override
  public String getXML() {

    StringBuilder xml = new StringBuilder();
    xml.append( XMLHandler.openTag( XML_TAG ) );

    xml.append( super.getXML() ); // id, enabled

    xml.append( XMLHandler.closeTag( XML_TAG ) );
    return xml.toString();
  }

  @Override
  public void loadXML( Node ruleNode ) throws KettleException {
    super.loadXML( ruleNode );
  }

}