org.apache.http.impl.entity.EntityDeserializer Maven / Gradle / Ivy
/*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
*
* This entity deserializer supports "chunked" and "identitiy" transfer-coding
* and content length delimited content.
*
* This class relies on a specific implementation of
* {@link ContentLengthStrategy} to determine the content length or transfer
* encoding of the entity.
*
* This class generates an instance of {@link HttpEntity} based on
* properties of the message. The content of the entity will be decoded
* transparently for the consumer.
*
* @since 4.0
*
* @deprecated (4.3) use {@link org.apache.http.impl.BHttpConnectionBase}
*/
@Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
@Deprecated
public class EntityDeserializer {
private final ContentLengthStrategy lenStrategy;
public EntityDeserializer(final ContentLengthStrategy lenStrategy) {
super();
this.lenStrategy = Args.notNull(lenStrategy, "Content length strategy");
}
/**
* Creates a {@link BasicHttpEntity} based on properties of the given
* message. The content of the entity is created by wrapping
* {@link SessionInputBuffer} with a content decoder depending on the
* transfer mechanism used by the message.
*
* This method is called by the public
* {@link #deserialize(SessionInputBuffer, HttpMessage)}.
*
* @param inBuffer the session input buffer.
* @param message the message.
* @return HTTP entity.
* @throws HttpException in case of HTTP protocol violation.
* @throws IOException in case of an I/O error.
*/
protected BasicHttpEntity doDeserialize(
final SessionInputBuffer inBuffer,
final HttpMessage message) throws HttpException, IOException {
final BasicHttpEntity entity = new BasicHttpEntity();
final long len = this.lenStrategy.determineLength(message);
if (len == ContentLengthStrategy.CHUNKED) {
entity.setChunked(true);
entity.setContentLength(-1);
entity.setContent(new ChunkedInputStream(inBuffer));
} else if (len == ContentLengthStrategy.IDENTITY) {
entity.setChunked(false);
entity.setContentLength(-1);
entity.setContent(new IdentityInputStream(inBuffer));
} else {
entity.setChunked(false);
entity.setContentLength(len);
entity.setContent(new ContentLengthInputStream(inBuffer, len));
}
final Header contentTypeHeader = message.getFirstHeader(HTTP.CONTENT_TYPE);
if (contentTypeHeader != null) {
entity.setContentType(contentTypeHeader);
}
final Header contentEncodingHeader = message.getFirstHeader(HTTP.CONTENT_ENCODING);
if (contentEncodingHeader != null) {
entity.setContentEncoding(contentEncodingHeader);
}
return entity;
}
/**
* Creates an {@link HttpEntity} based on properties of the given message.
* The content of the entity is created by wrapping
* {@link SessionInputBuffer} with a content decoder depending on the
* transfer mechanism used by the message.
*
* The content of the entity is NOT retrieved by this method.
*
* @param inBuffer the session input buffer.
* @param message the message.
* @return HTTP entity.
* @throws HttpException in case of HTTP protocol violation.
* @throws IOException in case of an I/O error.
*/
public HttpEntity deserialize(
final SessionInputBuffer inBuffer,
final HttpMessage message) throws HttpException, IOException {
Args.notNull(inBuffer, "Session input buffer");
Args.notNull(message, "HTTP message");
return doDeserialize(inBuffer, message);
}
}