AbstractDelegate.java

/*!
 * Copyright 2010 - 2015 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.repository.pur;

import java.util.Date;

import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.logging.LogChannel;
import org.pentaho.di.core.logging.LogChannelInterface;
import org.pentaho.di.repository.RepositoryElementInterface;
import org.pentaho.platform.api.repository2.unified.data.node.DataNode;

public abstract class AbstractDelegate {

  protected static final String PROP_NAME = "NAME"; //$NON-NLS-1$

  protected static final String PROP_DESCRIPTION = "DESCRIPTION"; //$NON-NLS-1$

  protected LogChannelInterface log;

  public AbstractDelegate() {
    log = LogChannel.GENERAL;
  }

  protected String sanitizeNodeName( final String name ) {
    StringBuffer result = new StringBuffer( 30 );

    for ( char c : name.toCharArray() ) {
      switch ( c ) {
        case ':':
        case '/':
          result.append( '-' );
          break;
        case '{':
        case '}':
        case '[':
        case ']':
        case ')':
        case '(':
        case '\\':
          result.append( '_' );
          break;
        default:
          if ( Character.isLetterOrDigit( c ) ) {
            result.append( c );
          }
          break;
      }
    }

    return result.toString();
  }

  protected String getString( DataNode node, String name ) {
    if ( node.hasProperty( name ) ) {
      return node.getProperty( name ).getString();
    } else {
      return null;
    }
  }

  protected long getLong( DataNode node, String name ) {
    if ( node.hasProperty( name ) ) {
      return node.getProperty( name ).getLong();
    } else {
      return 0L;
    }
  }

  protected Date getDate( DataNode node, String name ) {
    if ( node.hasProperty( name ) ) {
      return node.getProperty( name ).getDate();
    } else {
      return null;
    }
  }

  protected boolean getBoolean( DataNode node, String name, boolean defaultValue ) {
    if ( node.hasProperty( name ) ) {
      return node.getProperty( name ).getBoolean();
    } else {
      return defaultValue;
    }
  }

  public abstract DataNode elementToDataNode( RepositoryElementInterface element ) throws KettleException;

  public boolean equals( RepositoryElementInterface first, RepositoryElementInterface second ) {
    try {
      return elementToDataNode( first ).equals( elementToDataNode( second ) );
    } catch ( KettleException e ) {
      return false;
    }
  }
}