# XMLGroupVisitor.java

    /*******************************************************************************
     * Copyright (c) 2009, 2013 Mountainminds GmbH & Co. KG and Contributors
     * 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:
     *    Brock Janiczak - initial API and implementation
     *    Marc R. Hoffmann - generalized structure, line info
     *
     *******************************************************************************/
    package org.jacoco.report.internal.xml;

    import java.io.IOException;

    import org.jacoco.core.analysis.IBundleCoverage;
    import org.jacoco.report.ISourceFileLocator;
    import org.jacoco.report.internal.AbstractGroupVisitor;

    /**
     * A {@link org.jacoco.report.IReportGroupVisitor} that transforms the report
     * structure into XML elements.
     */
    public class XMLGroupVisitor extends AbstractGroupVisitor {

    	/** XML element of this group */
    	protected final XMLElement element;

    	/**
    	 * New handler for a group with the given name.
    	 *
    	 * @param element
    	 *            XML-Element representing this coverage node. The start tag
    	 *            must not be closed yet to allow adding additional attributes.
    	 * @param name
    	 *            name of the group
    	 * @throws IOException
    	 *             in case of problems with the underlying writer
    	 */
    	public XMLGroupVisitor(final XMLElement element, final String name)
    			throws IOException {
    		super(name);
    		this.element = element;
    	}

    	@Override
    	protected void handleBundle(final IBundleCoverage bundle,
    			final ISourceFileLocator locator) throws IOException {
    		final XMLElement child = createChild(bundle.getName());
    		XMLCoverageWriter.writeBundle(bundle, child);
    	}

    	@Override
    	protected AbstractGroupVisitor handleGroup(final String name)
    			throws IOException {
    		final XMLElement child = createChild(name);
    		return new XMLGroupVisitor(child, name);
    	}

    	@Override
    	protected void handleEnd() throws IOException {
    		XMLCoverageWriter.writeCounters(total, element);
    	}

    	private XMLElement createChild(final String name) throws IOException {
    		return XMLCoverageWriter.createChild(element, "group", name);
    	}

    }