SetArgs.java

/*
 * Copyright 2011-2016 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.
 */
package com.lambdaworks.redis;

import com.lambdaworks.redis.protocol.CommandArgs;

/**
 * Argument list builder for the new redis <a href="http://redis.io/commands/set">SET</a> command starting from Redis 2.6.12.
 * Static import the methods from {@link Builder} and chain the method calls: {@code ex(10).nx()}.
 * 
 * @author Will Glozer
 * @author Vincent Rischmann
 */
public class SetArgs {

    private Long ex;
    private Long px;
    private boolean nx = false;
    private boolean xx = false;

    public static class Builder {
        /**
         * Utility constructor.
         */
        private Builder() {

        }

        public static SetArgs ex(long ex) {
            return new SetArgs().ex(ex);
        }

        public static SetArgs px(long px) {
            return new SetArgs().px(px);
        }

        public static SetArgs nx() {
            return new SetArgs().nx();
        }

        public static SetArgs xx() {
            return new SetArgs().xx();
        }
    }

    public SetArgs ex(long ex) {
        this.ex = ex;
        return this;
    }

    public SetArgs px(long px) {
        this.px = px;
        return this;
    }

    public SetArgs nx() {
        this.nx = true;
        return this;
    }

    public SetArgs xx() {
        this.xx = true;
        return this;
    }

    public <K, V> void build(CommandArgs<K, V> args) {
        if (ex != null) {
            args.add("EX").add(ex);
        }

        if (px != null) {
            args.add("PX").add(px);
        }

        if (nx) {
            args.add("NX");
        }

        if (xx) {
            args.add("XX");
        }
    }
}