Package org.megatome.frame2.front.config

Source Code of org.megatome.frame2.front.config.EventTagHandler

/*
* ====================================================================
*
* Frame2 Open Source License
*
* Copyright (c) 2004-2007 Megatome Technologies.  All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
*
* 3. The end-user documentation included with the redistribution, if
*    any, must include the following acknowlegement:
*       "This product includes software developed by
*        Megatome Technologies."
*    Alternately, this acknowlegement may appear in the software itself,
*    if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Frame2 Project", and "Frame2",
*    must not be used to endorse or promote products derived
*    from this software without prior written permission. For written
*    permission, please contact iamthechad@sourceforge.net.
*
* 5. Products derived from this software may not be called "Frame2"
*    nor may "Frame2" appear in their names without prior written
*    permission of Megatome Technologies.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED.  IN NO EVENT SHALL MEGATOME TECHNOLOGIES OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*/
package org.megatome.frame2.front.config;

import java.util.HashMap;
import java.util.Map;

import org.megatome.frame2.log.Logger;
import org.megatome.frame2.log.LoggerFactory;
import org.megatome.frame2.util.sax.ParserException;
import org.xml.sax.Attributes;

/**
* EventTagHandler handles the event elements of the Configuration file. It
* generates a HashMap of all the EventDef.
*/
class EventTagHandler extends ConfigElementHandler {
    private static Logger LOGGER = LoggerFactory.instance(EventTagHandler.class
            .getName());
    public static final String NAME = "name"; //$NON-NLS-1$
    public static final String TYPE = "type"; //$NON-NLS-1$
    public static final String RESOLVE_AS = "resolveAs"; //$NON-NLS-1$
    public static final String INVALID_TYPE = "Error: Invalid event resolveAs "; //$NON-NLS-1$
    private Map<String, EventDef> events = new HashMap<String, EventDef>();

    @Override
  public void startElement(@SuppressWarnings("unused")
  String uri, @SuppressWarnings("unused")
  String localName, @SuppressWarnings("unused")
  String qName,
            Attributes attributes) throws ParserException {
        ResolveType rtype = null;
        String name = attributes.getValue(NAME);
        String type = attributes.getValue(TYPE);
        String resolveAs = attributes.getValue(RESOLVE_AS);

        if (resolveAs == null) {
            rtype = ResolveType.PARENT; // Default setting
        } else {
            rtype = ResolveType.fromString(resolveAs);
        }

        if (rtype == null) {
            throw new ParserException("resolveAs attribute " + resolveAs //$NON-NLS-1$
                    + " is not valid "); //$NON-NLS-1$
        }

        EventDef event = new EventDef(name, type, rtype);

        if (this.events.put(attributes.getValue(NAME), event) != null) {
            LOGGER.warn("This Event already exists " //$NON-NLS-1$
                    + attributes.getValue(NAME));
        }
    }

    /**
     * @return returns a clone of the EventDef Map
     */
    public Map<String, EventDef> getEvents() {
        return this.events;
    }

    /**
     * clear the EventDef Map
     */
    @Override
  public void clear() {
        this.events.clear();
    }
}
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