com.hazelcast.client.impl.protocol.codec.builtin.CodecUtil Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2021, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.client.impl.protocol.codec.builtin;
import com.hazelcast.client.impl.protocol.ClientMessage;
import java.util.function.BiConsumer;
import java.util.function.Function;
import static com.hazelcast.client.impl.protocol.ClientMessage.NULL_FRAME;
public final class CodecUtil {
private CodecUtil() {
}
public static void fastForwardToEndFrame(ClientMessage.ForwardFrameIterator iterator) {
// We are starting from 1 because of the BEGIN_FRAME we read
// in the beginning of the decode method
int numberOfExpectedEndFrames = 1;
ClientMessage.Frame frame;
while (numberOfExpectedEndFrames != 0) {
frame = iterator.next();
if (frame.isEndFrame()) {
numberOfExpectedEndFrames--;
} else if (frame.isBeginFrame()) {
numberOfExpectedEndFrames++;
}
}
}
public static void encodeNullable(ClientMessage clientMessage, T value, BiConsumer encode) {
if (value == null) {
clientMessage.add(NULL_FRAME.copy());
} else {
encode.accept(clientMessage, value);
}
}
public static T decodeNullable(ClientMessage.ForwardFrameIterator iterator, Function decode) {
return nextFrameIsNullEndFrame(iterator) ? null : decode.apply(iterator);
}
public static boolean nextFrameIsDataStructureEndFrame(ClientMessage.ForwardFrameIterator iterator) {
return iterator.peekNext().isEndFrame();
}
public static boolean nextFrameIsNullEndFrame(ClientMessage.ForwardFrameIterator iterator) {
boolean isNull = iterator.peekNext().isNullFrame();
if (isNull) {
iterator.next();
}
return isNull;
}
}