Redis API 必杀解读:引入RedisTemplate

题记

在工作和学习中啊，比如说JAVA开发，要使用Redis，首先要引入一个RedisTemplate类.
在此,将所有的方法都已经注释出来了.

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//

package org.springframework.data.redis.core;

import java.io.Closeable;
import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.springframework.beans.factory.BeanClassLoaderAware;
import org.springframework.dao.DataAccessException;
import org.springframework.dao.InvalidDataAccessApiUsageException;
import org.springframework.data.redis.connection.DataType;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.SortParameters;
import org.springframework.data.redis.connection.RedisZSetCommands.Tuple;
import org.springframework.data.redis.core.ZSetOperations.TypedTuple;
import org.springframework.data.redis.core.query.QueryUtils;
import org.springframework.data.redis.core.query.SortQuery;
import org.springframework.data.redis.core.script.DefaultScriptExecutor;
import org.springframework.data.redis.core.script.RedisScript;
import org.springframework.data.redis.core.script.ScriptExecutor;
import org.springframework.data.redis.core.types.RedisClientInfo;
import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationUtils;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.transaction.support.TransactionSynchronizationManager;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
import org.springframework.util.CollectionUtils;

public class RedisTemplate extends RedisAccessor implements RedisOperations, BeanClassLoaderAware {
    private boolean enableTransactionSupport = false;
    private boolean exposeConnection = false;
    private boolean initialized = false;
    private boolean enableDefaultSerializer = true;
    private RedisSerializer defaultSerializer;
    private ClassLoader classLoader;
    private RedisSerializer keySerializer = null;
    private RedisSerializer valueSerializer = null;
    private RedisSerializer hashKeySerializer = null;
    private RedisSerializer hashValueSerializer = null;
    private RedisSerializer stringSerializer = new StringRedisSerializer();
    private ScriptExecutor scriptExecutor;
    private ValueOperations valueOps;
    private ListOperations listOps;
    private SetOperations setOps;
    private ZSetOperations zSetOps;
    private GeoOperations geoOps;
    private HyperLogLogOperations hllOps;

    public RedisTemplate() {
    }

    //afterPropertiesSet （初始化操作）加载配置后执行
    public void afterPropertiesSet() {
        super.afterPropertiesSet();
        boolean defaultUsed = false;
        //serializer 序列化
        if (this.defaultSerializer == null) {
            this.defaultSerializer = new JdkSerializationRedisSerializer(this.classLoader != null ? this.classLoader : this.getClass().getClassLoader());
        }
        //enable 使能够，提供做…的权利[措施]; 使可能; 授予权利或方法;
        if (this.enableDefaultSerializer) {
            if (this.keySerializer == null) {
                this.keySerializer = this.defaultSerializer;
                defaultUsed = true;
            }

            if (this.valueSerializer == null) {
                this.valueSerializer = this.defaultSerializer;
                defaultUsed = true;
            }

            if (this.hashKeySerializer == null) {
                this.hashKeySerializer = this.defaultSerializer;
                defaultUsed = true;
            }

            if (this.hashValueSerializer == null) {
                this.hashValueSerializer = this.defaultSerializer;
                defaultUsed = true;
            }
        }

        if (this.enableDefaultSerializer && defaultUsed) {
            Assert.notNull(this.defaultSerializer, "default serializer null and not all serializers initialized");
        }

        //script脚本
        //Executor 遗嘱执行人; 执行者; 实行者;
        if (this.scriptExecutor == null) {
            this.scriptExecutor = new DefaultScriptExecutor(this);
        }
        //初始化完成
        this.initialized = true;
    }

    //execute 执行   exposeConnection暴露连接
    public  T execute(RedisCallback action) {
        return this.execute(action, this.isExposeConnection());
    }

    public  T execute(RedisCallback action, boolean exposeConnection) {
        return this.execute(action, exposeConnection, false);
    }

    //pipeline 管道
    public  T execute(RedisCallback action, boolean exposeConnection, boolean pipeline) {
        Assert.isTrue(this.initialized, "template not initialized; call afterPropertiesSet() before using it");
        Assert.notNull(action, "Callback object must not be null");
        RedisConnectionFactory factory = this.getConnectionFactory();
        RedisConnection conn = null;

        Object var11;
        try {
            //enableTransactionSupport 是否支持事务
            if (this.enableTransactionSupport) {
                conn = RedisConnectionUtils.bindConnection(factory, this.enableTransactionSupport);
            } else {
                conn = RedisConnectionUtils.getConnection(factory);
            }

            //现存的; 目前的;
            boolean existingConnection = TransactionSynchronizationManager.hasResource(factory);
            RedisConnection connToUse = this.preProcessConnection(conn, existingConnection);
            boolean pipelineStatus = connToUse.isPipelined();
            if (pipeline && !pipelineStatus) {
                connToUse.openPipeline();
            }

            RedisConnection connToExpose = exposeConnection ? connToUse : this.createRedisConnectionProxy(connToUse);
            T result = action.doInRedis(connToExpose);
            if (pipeline && !pipelineStatus) {
                connToUse.closePipeline();
            }

            var11 = this.postProcessResult(result, connToUse, existingConnection);
        } finally {
            RedisConnectionUtils.releaseConnection(conn, factory);
        }

        return var11;
    }

    public  T execute(SessionCallback session) {
        Assert.isTrue(this.initialized, "template not initialized; call afterPropertiesSet() before using it");
        Assert.notNull(session, "Callback object must not be null");
        RedisConnectionFactory factory = this.getConnectionFactory();
        RedisConnectionUtils.bindConnection(factory, this.enableTransactionSupport);

        Object var3;
        try {
            var3 = session.execute(this);
        } finally {
            RedisConnectionUtils.unbindConnection(factory);
        }

        return var3;
    }

    //executePipelined 执行管道
    public List