| /* |
| * ==================================================================== |
| * 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 |
| * <http://www.apache.org/>. |
| * |
| */ |
| |
| package org.apache.hc.core5.http.io.entity; |
| |
| import org.apache.hc.core5.annotation.Contract; |
| import org.apache.hc.core5.annotation.ThreadingBehavior; |
| import org.apache.hc.core5.function.Supplier; |
| import org.apache.hc.core5.http.Header; |
| import org.apache.hc.core5.http.HttpEntity; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * An empty entity with no content-type. This type may be used for convenience |
| * in place of an empty {@link ByteArrayEntity}. |
| * |
| * @since 5.1 |
| */ |
| @Contract(threading = ThreadingBehavior.IMMUTABLE) |
| public final class NullEntity implements HttpEntity { |
| |
| public static final NullEntity INSTANCE = new NullEntity(); |
| |
| private NullEntity() {} |
| |
| @Override |
| public boolean isRepeatable() { |
| return true; |
| } |
| |
| @Override |
| public InputStream getContent() throws IOException, UnsupportedOperationException { |
| return EmptyInputStream.INSTANCE; |
| } |
| |
| @Override |
| public void writeTo(final OutputStream outStream) throws IOException {} |
| |
| @Override |
| public boolean isStreaming() { |
| return false; |
| } |
| |
| @Override |
| public Supplier<List<? extends Header>> getTrailers() { |
| return null; |
| } |
| |
| @Override |
| public void close() throws IOException {} |
| |
| @Override |
| public long getContentLength() { |
| return 0; |
| } |
| |
| @Override |
| public String getContentType() { |
| return null; |
| } |
| |
| @Override |
| public String getContentEncoding() { |
| return null; |
| } |
| |
| @Override |
| public boolean isChunked() { |
| return false; |
| } |
| |
| @Override |
| public Set<String> getTrailerNames() { |
| return Collections.emptySet(); |
| } |
| } |