/*
* 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.tomcat.websocket.pojo;
import java.io.IOException;
import java.io.StringReader;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import javax.websocket.DecodeException;
import javax.websocket.Decoder;
import javax.websocket.Decoder.Text;
import javax.websocket.Decoder.TextStream;
import javax.websocket.EndpointConfig;
import javax.websocket.Session;
import org.apache.tomcat.util.res.StringManager;
import org.apache.tomcat.websocket.Util;
/**
* Text specific concrete implementation for handling whole messages.
*/
public class PojoMessageHandlerWholeText
extends PojoMessageHandlerWholeBase<String> {
private static final StringManager sm =
StringManager.getManager(Constants.PACKAGE_NAME);
private final List<Decoder> decoders = new ArrayList<>();
private final Class<?> primitiveType;
public PojoMessageHandlerWholeText(Object pojo, Method method,
Session session, EndpointConfig config,
List<Class<? extends Decoder>> decoderClazzes, Object[] params,
int indexPayload, boolean convert, int indexSession,
long maxMessageSize) {
super(pojo, method, session, params, indexPayload, convert,
indexSession, maxMessageSize);
// Check for primitives
Class<?> type = method.getParameterTypes()[indexPayload];
if (Util.isPrimitive(type)) {
primitiveType = type;
return;
} else {
primitiveType = null;
}
try {
if (decoderClazzes != null) {
for (Class<? extends Decoder> decoderClazz : decoderClazzes) {
if (Text.class.isAssignableFrom(decoderClazz)) {
Text<?> decoder = (Text<?>) decoderClazz.newInstance();
decoder.init(config);
decoders.add(decoder);
} else if (TextStream.class.isAssignableFrom(
decoderClazz)) {
TextStream<?> decoder =
(TextStream<?>) decoderClazz.newInstance();
decoder.init(config);
decoders.add(decoder);
} else {
// Binary decoder - ignore it
}
}
}
} catch (IllegalAccessException | InstantiationException e) {
throw new IllegalArgumentException(e);
}
}
@Override
protected Object decode(String message) throws DecodeException {
// Handle primitives
if (primitiveType != null) {
return Util.coerceToType(primitiveType, message);
}
// Handle full decoders
for (Decoder decoder : decoders) {
if (decoder instanceof Text) {
if (((Text<?>) decoder).willDecode(message)) {
return ((Text<?>) decoder).decode(message);
}
} else {
StringReader r = new StringReader(message);
try {
return ((TextStream<?>) decoder).decode(r);
} catch (IOException ioe) {
throw new DecodeException(message, sm.getString(
"pojoMessageHandlerWhole.decodeIoFail"), ioe);
}
}
}
return null;
}
@Override
protected Object convert(String message) {
return new StringReader(message);
}
@Override
protected void onClose() {
for (Decoder decoder : decoders) {
decoder.destroy();
}
}
}