2016-04-14 00:30:09 +02:00
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/*
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* Copyright 2016 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License, version 2.0 (the
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* "License"); you may not use this file except in compliance with the License. You may obtain a
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* copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the License
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* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the License for the specific language governing permissions and limitations under
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* the License.
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*/
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package io.netty.handler.codec.redis;
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2016-04-12 14:22:41 +02:00
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import io.netty.util.internal.UnstableApi;
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2016-04-14 00:30:09 +02:00
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/**
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* The header of Bulk Strings in <a href="http://redis.io/topics/protocol">RESP</a>.
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*/
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2016-04-12 14:22:41 +02:00
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@UnstableApi
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2016-04-14 00:30:09 +02:00
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public class BulkStringHeaderRedisMessage implements RedisMessage {
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private final int bulkStringLength;
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/**
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* Creates a {@link BulkStringHeaderRedisMessage}.
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*
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* @param bulkStringLength follow content length.
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*/
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public BulkStringHeaderRedisMessage(int bulkStringLength) {
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2016-04-30 10:36:24 +02:00
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if (bulkStringLength <= 0) {
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throw new RedisCodecException("bulkStringLength: " + bulkStringLength + " (expected: > 0)");
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}
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2016-04-14 00:30:09 +02:00
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this.bulkStringLength = bulkStringLength;
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}
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/**
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* Return {@code bulkStringLength} for this content.
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*/
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public final int bulkStringLength() {
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return bulkStringLength;
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}
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/**
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* Returns whether the content of this message is {@code null}.
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*
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* @return indicates whether the content of this message is {@code null}.
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*/
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public boolean isNull() {
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return bulkStringLength == RedisConstants.NULL_VALUE;
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}
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}
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