ModelDataProcessor.java

/*******************************************************************************
 * Copyright (c) 2004,2008 Red Hat, Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Keith Seitz <keiths@redhat.com> - initial API and implementation
 *    Kent Sebastian <ksebasti@redhat.com> -
 *******************************************************************************/

package org.eclipse.linuxtools.internal.oprofile.core.opxml.modeldata;

import org.eclipse.linuxtools.internal.oprofile.core.model.OpModelImage;
import org.eclipse.linuxtools.internal.oprofile.core.opxml.OprofileSAXHandler;
import org.eclipse.linuxtools.internal.oprofile.core.opxml.XMLProcessor;
import org.xml.sax.Attributes;


/**
 * A processor for `opxml samples`.
 */
public class ModelDataProcessor extends XMLProcessor {
    //The resulting image compiled by the processor to be used by the caller.
    public static class CallData {
        public OpModelImage opModelImage;
        public CallData(OpModelImage im) { opModelImage = im; }
    }

    //XML tags parsed by this processor
    private static final String IMAGE_TAG = "image"; //$NON-NLS-1$
    private static final String SYMBOLS_TAG = "symbols"; //$NON-NLS-1$
    private static final String DEPENDENT_TAG = "dependent"; //$NON-NLS-1$

    //attribute tags
    private static final String ATTR_IMAGENAME = "name"; //$NON-NLS-1$
    private static final String ATTR_COUNT = "count"; //$NON-NLS-1$
    private static final String ATTR_DEPCOUNT = "count"; //$NON-NLS-1$

    //the current image being constructed
    private OpModelImage image;
    private int imgSeen;    //for ensuring image singleton-ness

    //processors used for symbols and dependent images
    private SymbolsProcessor _symbolsProcessor = new SymbolsProcessor();
    private DependentProcessor _dependentProcessor = new DependentProcessor();


    @Override
    public void reset(Object callData) {
        image = ((CallData) callData).opModelImage;
        imgSeen = 0;
    }
    @Override
    public void startElement(String name, Attributes attrs, Object callData) {
        if (name.equals(IMAGE_TAG)) {
            if (imgSeen == 0) {
                image.setName(validString(attrs.getValue(ATTR_IMAGENAME)));
                image.setCount(Integer.parseInt(attrs.getValue(ATTR_COUNT)));
            }

            imgSeen++;
        } else if (name.equals(SYMBOLS_TAG)) {
            OprofileSAXHandler.getInstance(callData).push(_symbolsProcessor);
        } else if (name.equals(DEPENDENT_TAG)) {
            image.setDepCount(Integer.parseInt(attrs.getValue(ATTR_DEPCOUNT)));
            OprofileSAXHandler.getInstance(callData).push(_dependentProcessor);
        } else {
            super.startElement(name, attrs, callData);
        }
    }

    @Override
    public void endElement(String name, Object callData) {
        if (name.equals(IMAGE_TAG)) {
            if (imgSeen > 1) {
                //should only ever be one image, otherwise oprofile was run
                // outside of eclipse and the ui would not handle it properly
                image.setCount(OpModelImage.IMAGE_PARSE_ERROR);
                image.setDepCount(0);
                image.setDependents(null);
                image.setSymbols(null);
                image.setName(""); //$NON-NLS-1$
            }
        } else if (name.equals(SYMBOLS_TAG)){
            image.setSymbols(_symbolsProcessor.getSymbols());
        } else if (name.equals(DEPENDENT_TAG)){
            image.setDependents(_dependentProcessor.getImages());
        } else {
            super.endElement(name, callData);
        }
    }
}