/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed 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.springframework.core.codec;
import java.util.Map;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferUtils;
import org.springframework.util.MimeType;
import org.springframework.util.MimeTypeUtils;
/**
* Decoder for {@code byte} arrays.
*
* @author Arjen Poutsma
* @since 5.0
*/
public class ByteArrayDecoder extends AbstractDecoder<byte[]> {
public ByteArrayDecoder() {
super(MimeTypeUtils.ALL);
}
@Override
public boolean canDecode(ResolvableType elementType, MimeType mimeType) {
Class<?> clazz = elementType.getRawClass();
return (super.canDecode(elementType, mimeType) && byte[].class == clazz);
}
@Override
public Flux<byte[]> decode(Publisher<DataBuffer> inputStream, ResolvableType elementType,
MimeType mimeType, Map<String, Object> hints) {
return Flux.from(inputStream).map((dataBuffer) -> {
byte[] result = new byte[dataBuffer.readableByteCount()];
dataBuffer.read(result);
DataBufferUtils.release(dataBuffer);
return result ;
});
}
}