/**
* Copyright (C) 2003-2008 eXo Platform SAS.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License
* as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see<http://www.gnu.org/licenses/>.
*/
package org.etk.core.rest.impl.provider;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.Provider;
import org.etk.core.rest.provider.EntityProvider;
@Provider
public class FileEntityProvider implements EntityProvider<File> {
/**
* {@inheritDoc}
*/
public boolean isReadable(Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
return type == File.class;
}
/**
* {@inheritDoc}
*/
public File readFrom(Class<File> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, String> httpHeaders,
InputStream entityStream) throws IOException {
File f = File.createTempFile("ws_rs", "tmp");
OutputStream out = new FileOutputStream(f);
try {
IOHelper.write(entityStream, out);
} finally {
out.close();
}
return f;
}
/**
* {@inheritDoc}
*/
public long getSize(File t,
Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
return t.length();
}
/**
* {@inheritDoc}
*/
public boolean isWriteable(Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
return File.class.isAssignableFrom(type); // more flexible then '=='
}
/**
* {@inheritDoc}
*/
public void writeTo(File t,
Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders,
OutputStream entityStream) throws IOException {
InputStream in = new FileInputStream(t);
try {
IOHelper.write(in, entityStream);
} finally {
in.close();
}
}
}