com.sun.enterprise.admin.util.cache.StringDataProvider Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project
There is a newer version: 7.2024.1.Alpha1
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
package com.sun.enterprise.admin.util.cache;

import com.sun.enterprise.util.io.FileUtils;
import java.io.*;
import java.nio.charset.Charset;
import org.jvnet.hk2.annotations.Service;

/** DataProvider for String
 *
 * @author mmares
 */
@Service
public class StringDataProvider implements DataProvider {
    
    private Charset charset;
    
    public StringDataProvider() {
        try {
            charset = Charset.forName("UTF-8");
        } catch (Exception ex) {
            charset = Charset.defaultCharset();
        }
    }

    @Override
    public boolean accept(Class clazz) {
        return String.class.isAssignableFrom(clazz);
    }

    @Override
    public void writeToStream(Object o, OutputStream stream) throws IOException {
        String str = (String) o;
        stream.write(str.getBytes(charset));
    }

    @Override
    public Object toInstance(InputStream stream, Class clazz) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        FileUtils.copy(stream, baos, 0);
        return new String(baos.toByteArray(), charset);
    }
    
}