////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2003 Oliver Burn
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
////////////////////////////////////////////////////////////////////////////////
package com.puppycrawl.tools.checkstyle.checks.xpath;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.beanutils.BeanUtils;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
/**
* Iterator for an attribute axis of an XPath element. The XPath
* element is a DetailAST. Attributes correspond to bean
* properties of the DetailAST.
* @author Rick Giles
*/
public class AttributeAxisIterator
implements Iterator
{
/** actual iterator */
private Iterator mIter = (new ArrayList()).iterator();
/**
* Constructs a <code>AttributeAxisIterator</code> for a
* DetailAST element.
* @param aAST the DetailAST element
*/
public AttributeAxisIterator(DetailAST aAST)
{
Map props = new HashMap();
//use BeanUtils to get the properties
try {
props = BeanUtils.describe(aAST);
}
catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// add attributes for the properties to a list and
// set the iterator to an iterator over that list.
final List attributes = new ArrayList(props.size());
final Set values = props.keySet();
for (Iterator iter = values.iterator(); iter.hasNext();) {
final String name = (String) iter.next();
final String value = (String) props.get(name);
attributes.add(new Attribute(aAST, name, value));
}
mIter = attributes.iterator();
}
/**@see java.util.Iterator#next() */
public Object next()
{
return mIter.next();
}
/** @see java.util.Iterator#hasNext() */
public boolean hasNext()
{
return mIter.hasNext();
}
/** @see java.util.Iterator#remove() */
public void remove()
{
mIter.remove();
}
}