/*
* Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.relaxng.pattern;
import com.caucho.relaxng.RelaxException;
import com.caucho.relaxng.program.DataItem;
import com.caucho.relaxng.program.Item;
/**
* Relax empty pattern
*/
public class DataPattern extends Pattern {
String _type;
/**
* Creates a new empty pattern.
*/
public DataPattern(String type)
{
_type = type;
}
/**
* Creates the program (somewhat bogus)
*/
public Item createItem(GrammarPattern grammar)
throws RelaxException
{
return new DataItem(_type);
}
/**
* Returns a string for the production.
*/
public String toProduction()
{
return "data";
}
/**
* Returns true if it contains a data element.
*/
public boolean hasData()
{
return true;
}
public boolean equals(Object o)
{
if (this == o)
return true;
if (! (o instanceof DataPattern))
return false;
DataPattern pattern = (DataPattern) o;
return _type.equals(pattern._type);
}
/**
* Debugging.
*/
public String toString()
{
return "DataPattern[" + _type + "]";
}
}