/**
 *    Copyright 2011 meltmedia
 *
 *    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.xchain.framework.util;

import java.util.Iterator;
import java.util.Map;

/**
 * A container class for parsed transformer processing instructions.  This is generated by ParserUtil.parseTransformer(String).
 * 
 * @author Christian Trimble
 * @author Devon Tackett
 *
 * @see ParserUtil#parseTransformer(String)
 */
public class ParsedTransformer
{
  private Map<String, String> attributes = null;
  private Map<String, String> parameters = null;
  private Map<String, String> outputProperties = null;

  /**
   * Set the attribute map.
   * @param attributes A mapping of attribute names to attribute values.
   */
  public void setAttributes( Map<String, String> attributes ) { this.attributes = attributes; }
  
  /** 
   * @return A mapping of attribute names to attribute values.
   */
  public Map<String, String> getAttributes() { return this.attributes; }
  
  /**
   * Set the parameter map.
   * @param parameters A mapping of parameter names to parameter values.
   */
  public void setParameters( Map<String, String> parameters ) { this.parameters = parameters; }
  
  /**
   * @return A mapping of parameter names to parameter values.
   */
  public Map<String, String> getParameters() { return this.parameters; }
  
  /**
   * Set the output properties map. 
   * @param outputProperties A mapping of output property names to output property values.
   */
  public void setOutputProperties( Map<String, String> outputProperties ) { this.outputProperties = outputProperties; }
  
  /**
   * @return A mapping of output property names to output property values.
   */
  public Map<String, String> getOutputProperties() { return this.outputProperties; }

  public String toString()
  {
    StringBuilder builder = new StringBuilder();

    appendMap(builder, attributes);
    if( parameters.keySet().size() > 0 ) {
      builder.append(" parameters ");
      appendMap(builder, parameters);
    }
    if( outputProperties.keySet().size() > 0 ) {
      builder.append(" output properties ");
      appendMap(builder, outputProperties);
    }

    return builder.toString();
  }

  private void appendMap( StringBuilder builder, Map<String, String> map )
  {
    Iterator<Map.Entry<String, String>> entryIterator = map.entrySet().iterator();
    while( entryIterator.hasNext() ) {
      Map.Entry<String, String> entry = entryIterator.next();
      builder.append(entry.getKey()).append(" ").append(entry.getValue());
      if( entryIterator.hasNext() ) {
        builder.append(" ");
      }
    }
  }
}