/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.cxf.attachment;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.activation.DataSource;
import org.apache.cxf.helpers.IOUtils;
import org.apache.cxf.io.CachedOutputStream;
public class AttachmentDataSource implements DataSource {
private final String ct;
private CachedOutputStream cache;
private InputStream ins;
private DelegatingInputStream delegate;
public AttachmentDataSource(String ctParam, InputStream inParam) throws IOException {
this.ct = ctParam;
ins = inParam;
}
public boolean isCached() {
return cache != null;
}
public void cache() throws IOException {
if (cache == null) {
cache = new CachedOutputStream();
IOUtils.copy(ins, cache);
cache.lockOutputStream();
ins.close();
ins = null;
if (delegate != null) {
delegate.setInputStream(cache.getInputStream());
}
}
}
public void hold() throws IOException {
cache();
cache.holdTempFile();
}
public void release() {
cache.releaseTempFileHold();
}
public String getContentType() {
return ct;
}
public InputStream getInputStream() {
try {
if (cache != null) {
return cache.getInputStream();
}
if (delegate == null) {
delegate = new DelegatingInputStream(ins);
}
return delegate;
} catch (IOException e) {
return null;
}
}
public String getName() {
return null;
}
public OutputStream getOutputStream() throws IOException {
throw new UnsupportedOperationException();
}
}