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package org.apache.taglibs.standard.lang.jstl;

import java.util.Map;

/**
 *
 * <p>Represents an operator that obtains the value of another value's
 * property.  This is a specialization of ArraySuffix - a.b is
 * equivalent to a["b"]
 * 
 * @author Nathan Abramson - Art Technology Group
 * @author Shawn Bayern
 * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: tcfujii $
 **/

public class PropertySuffix
  extends ArraySuffix
{
  //-------------------------------------
  // Properties
  //-------------------------------------
  // property name

  String mName;
  public String getName ()
  { return mName; }
  public void setName (String pName)
  { mName = pName; }

  //-------------------------------------
  /**
   *
   * Constructor
   **/
  public PropertySuffix (String pName)
  {
    super (null);
    mName = pName;
  }

  //-------------------------------------
  /**
   *
   * Gets the value of the index
   **/
  Object evaluateIndex (Object pContext,
                        VariableResolver pResolver,
                        Map functions,
                        String defaultPrefix,
                        Logger pLogger)
    throws ELException
  {
    return mName;
  }

  //-------------------------------------
  /**
   *
   * Returns the operator symbol
   **/
  String getOperatorSymbol ()
  {
    return ".";
  }

  //-------------------------------------
  // ValueSuffix methods
  //-------------------------------------
  /**
   *
   * Returns the expression in the expression language syntax
   **/
  public String getExpressionString ()
  {
    return "." + StringLiteral.toIdentifierToken (mName);
  }

  //-------------------------------------
}