diff --git a/src/main/java/io/lettuce/core/codec/RedisCodecAdapter.java b/src/main/java/io/lettuce/core/codec/RedisCodecAdapter.java new file mode 100644 index 0000000000..ea523b1d69 --- /dev/null +++ b/src/main/java/io/lettuce/core/codec/RedisCodecAdapter.java @@ -0,0 +1,71 @@ +package io.lettuce.core.codec; + +import java.nio.ByteBuffer; + +/* + * Copyright 2011-2019 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 + * + * 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. + */ +/** + * A {@link RedisCodecAdapter} combines different codecs to encode/decode key and value + * to the command output. + * + * @author Dimitris Mandalidis + */ +public final class RedisCodecAdapter { + + private RedisCodecAdapter() {} + + /** + * Returns new {@link RedisCodec} + * @param the type of the key + * @param the type of the value + * @param keyCodec the codec to encode/decode the keys + * @param valueCodec the codec to encode/decode the values + * @return + */ + public static RedisCodec of(RedisCodec keyCodec, RedisCodec valueCodec) { + return new RedisCodecWrapper(keyCodec, valueCodec); + } + + private static class RedisCodecWrapper implements RedisCodec { + private final RedisCodec keyCodec; + private final RedisCodec valueCodec; + + RedisCodecWrapper(RedisCodec keyCodec, RedisCodec valueCodec) { + this.keyCodec = keyCodec; + this.valueCodec = valueCodec; + } + + @Override + public K decodeKey(ByteBuffer bytes) { + return keyCodec.decodeKey(bytes); + } + + @Override + public V decodeValue(ByteBuffer bytes) { + return valueCodec.decodeValue(bytes); + } + + @Override + public ByteBuffer encodeKey(K key) { + return keyCodec.encodeKey(key); + } + + @Override + public ByteBuffer encodeValue(V value) { + return valueCodec.encodeValue(value); + } + } +}