org.eclipse.emf.teneo.annotations.mapper.PersistenceFileProvider.java Source code

Introduction

Here is the source code for org.eclipse.emf.teneo.annotations.mapper.PersistenceFileProvider.java

Source

/**
 * <copyright> Copyright (c) 2005, 2006, 2007, 2008 Springsite BV (The Netherlands) and others 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: Martin Taal </copyright> $Id:
 * PersistenceMappingBuilder.java,v 1.10 2007/02/08 23:12:35 mtaal Exp $
 */

package org.eclipse.emf.teneo.annotations.mapper;

import java.io.InputStream;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.emf.teneo.extension.ExtensionPoint;

/**
 * Provides files to the mapping as well as to the runtime layers. It can be customized with an own
 * implementation by replacing the class in the ExtensionManager.
 * 
 * @author <a href="mailto:mtaal@elver.org">Martin Taal</a>
 * @version $Revision: 1.3 $
 */
public class PersistenceFileProvider implements ExtensionPoint {

    /** The logger */
    protected static final Log log = LogFactory.getLog(PersistenceFileProvider.class);

    /**
     * Returns an InputStream with the file content, note if the file does not exist then null may
     * be returned. This implementation searches for the file in the classpath using the path
     * parameters.
     * 
     * Custom implementations of this class may use any other method to find the file.
     * 
     * @param clz
     *            the class to use when reading the file through a classloader
     * @param path
     *            the path to the file (incl. the filename and extension)
     * 
     * @return an InputStream if found, or null otherwise
     */
    public InputStream getFileContent(Class<?> clz, String path) {
        if (clz == null) {
            return this.getClass().getClassLoader().getResourceAsStream(path);
        } else {
            return clz.getResourceAsStream(path);
        }
    }
}