001/* 002 * (C) Copyright 2006-2007 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * bstefanescu 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.ecm.platform.rendering.impl; 021 022import java.io.ByteArrayInputStream; 023import java.io.InputStream; 024 025import org.nuxeo.ecm.platform.rendering.RenderingResult; 026 027/** 028 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 029 */ 030public abstract class DefaultRenderingResult implements RenderingResult { 031 032 private static final long serialVersionUID = 6570212240033856735L; 033 034 protected final String formatName; 035 036 /** 037 * Constructor taking a rendering result name as argument. 038 * 039 * @param formatName 040 */ 041 protected DefaultRenderingResult(String formatName) { 042 this.formatName = formatName; 043 } 044 045 /** 046 * @return name of the engine that created it 047 */ 048 public String getFormatName() { 049 return formatName; 050 } 051 052 public abstract Object getOutcome(); 053 054 public InputStream getStream() { 055 Object outcome = getOutcome(); 056 if (outcome instanceof InputStream) { 057 return (InputStream) outcome; 058 } else if (outcome instanceof byte[]) { 059 return new ByteArrayInputStream((byte[]) outcome); 060 } else if (outcome instanceof CharSequence) { 061 return new ByteArrayInputStream(outcome.toString().getBytes()); 062 } 063 return getAdapter(InputStream.class); 064 } 065 066 public <E> E getAdapter(Class<E> adapter) { 067 Object outcome = getOutcome(); 068 if (adapter.isAssignableFrom(outcome.getClass())) { 069 return adapter.cast(outcome); 070 } 071 return null; 072 } 073 074}