Introduce LettuceInvoker

pom.xml

@@ -1,11 +1,13 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 
 	<modelVersion>4.0.0</modelVersion>
 
 	<groupId>org.springframework.data</groupId>
 	<artifactId>spring-data-redis</artifactId>
-	<version>2.5.0-SNAPSHOT</version>
+	<version>2.5.0-DATAREDIS-1224-SNAPSHOT</version>
 
 	<name>Spring Data Redis</name>
 

src/main/java/org/springframework/data/redis/connection/RedisListCommands.java

@@ -75,6 +75,7 @@ default Long lPos(byte[] key, byte[] element) {
 	 * @see <a href="https://redis.io/commands/lpos">Redis Documentation: LPOS</a>
 	 * @since 2.4
 	 */
+	@Nullable
 	List<Long> lPos(byte[] key, byte[] element, @Nullable Integer rank, @Nullable Integer count);
 
 	/**

src/main/java/org/springframework/data/redis/connection/convert/LongToBooleanConverter.java

@@ -25,6 +25,8 @@
  */
 public class LongToBooleanConverter implements Converter<Long, Boolean> {
 
+	public static final LongToBooleanConverter INSTANCE = new LongToBooleanConverter();
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.core.convert.converter.Converter#convert(Object)

src/main/java/org/springframework/data/redis/connection/convert/StringToRedisClientInfoConverter.java

@@ -35,6 +35,8 @@
  */
 public class StringToRedisClientInfoConverter implements Converter<String[], List<RedisClientInfo>> {
 
+	public static final StringToRedisClientInfoConverter INSTANCE = new StringToRedisClientInfoConverter();
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.core.convert.converter.Converter#convert(Object)

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceClusterHyperLogLogCommands.java

@@ -38,14 +38,9 @@ class LettuceClusterHyperLogLogCommands extends LettuceHyperLogLogCommands {
 	public Long pfCount(byte[]... keys) {
 
 		if (ClusterSlotHashUtil.isSameSlotForAllKeys(keys)) {
-
-			try {
-				return super.pfCount(keys);
-			} catch (Exception ex) {
-				throw convertLettuceAccessException(ex);
-			}
-
+			return super.pfCount(keys);
 		}
+
 		throw new InvalidDataAccessApiUsageException("All keys must map to same slot for pfcount in cluster mode.");
 	}
 
@@ -59,14 +54,10 @@ public void pfMerge(byte[] destinationKey, byte[]... sourceKeys) {
 		byte[][] allKeys = ByteUtils.mergeArrays(destinationKey, sourceKeys);
 
 		if (ClusterSlotHashUtil.isSameSlotForAllKeys(allKeys)) {
-			try {
-				super.pfMerge(destinationKey, sourceKeys);
-				return;
-			} catch (Exception ex) {
-				throw convertLettuceAccessException(ex);
-			}
-
+			super.pfMerge(destinationKey, sourceKeys);
+			return;
 		}
+
 		throw new InvalidDataAccessApiUsageException("All keys must map to same slot for pfmerge in cluster mode.");
 	}
 }