PropertyConstantHandler.java

/*******************************************************************************
 * Copyright (c) 2004, 2005
 * Thomas Hallgren, Kenneth Olwing, Mitch Sonies
 * Pontus Rydin, Nils Unden, Peer Torngren
 * The code, documentation and other materials contained herein have been
 * licensed under the Eclipse Public License - v 1.0 by the individual
 * copyright holders listed above, as Initial Contributors under such license.
 * The text of such license is available at www.eclipse.org.
 *******************************************************************************/

package org.eclipse.buckminster.core.common.parser;

import java.util.Map;

import org.eclipse.buckminster.core.common.model.ExpandingProperties;
import org.eclipse.buckminster.sax.AbstractHandler;
import org.eclipse.buckminster.sax.MissingRequiredAttributeException;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

public class PropertyConstantHandler extends PropertyHandler {
	static final String TAG = "property"; //$NON-NLS-1$

	private String value;

	public PropertyConstantHandler(AbstractHandler parent) {
		super(parent);
	}

	@Override
	public void handleAttributes(Attributes attrs) throws SAXException {
		super.handleAttributes(attrs);

		// Used to be 'getStringValue(...)', but that throws an exception
		// if the value is empty string or just whitespace...
		//
		String qname = "value"; //$NON-NLS-1$
		value = attrs.getValue(qname);
		if (value == null)
			// considering the xsd, this should never happen...
			throw new MissingRequiredAttributeException(this.getTAG(), qname, this.getDocumentLocator());
	}

	@Override
	void addYourself(Map<String, String> props) {
		String key = getKey();
		props.put(key, value);
		if (props instanceof ExpandingProperties<?>)
			((ExpandingProperties<?>) props).setMutable(key, getMutable());
	}
}