org.springframework.core.codec.AbstractDecoder Maven / Gradle / Ivy
/*
* Copyright 2002-2019 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
*
* https://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.Arrays;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Mono;
import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.lang.Nullable;
import org.springframework.util.MimeType;
/**
* Abstract base class for {@link Decoder} implementations.
*
* @author Sebastien Deleuze
* @author Arjen Poutsma
* @since 5.0
* @param the element type
*/
public abstract class AbstractDecoder implements Decoder {
private final List decodableMimeTypes;
protected Log logger = LogFactory.getLog(getClass());
protected AbstractDecoder(MimeType... supportedMimeTypes) {
this.decodableMimeTypes = Arrays.asList(supportedMimeTypes);
}
/**
* Set an alternative logger to use than the one based on the class name.
* @param logger the logger to use
* @since 5.1
*/
public void setLogger(Log logger) {
this.logger = logger;
}
/**
* Return the currently configured Logger.
* @since 5.1
*/
public Log getLogger() {
return logger;
}
@Override
public List getDecodableMimeTypes() {
return this.decodableMimeTypes;
}
@Override
public boolean canDecode(ResolvableType elementType, @Nullable MimeType mimeType) {
if (mimeType == null) {
return true;
}
for (MimeType candidate : this.decodableMimeTypes) {
if (candidate.isCompatibleWith(mimeType)) {
return true;
}
}
return false;
}
@Override
public Mono decodeToMono(Publisher inputStream, ResolvableType elementType,
@Nullable MimeType mimeType, @Nullable Map hints) {
throw new UnsupportedOperationException();
}
}