Polishing.

Reduce allocations by reusing IndexDefinition in RemoveIndexedData.

Tweak test method name.

See #2882
Original pull request: #2895

src/main/java/org/springframework/data/redis/core/convert/PathIndexResolver.java

@@ -210,24 +210,14 @@ public class PathIndexResolver implements IndexResolver {
 				}
 
 				Object transformedValue = indexDefinition.valueTransformer().convert(value);
+				IndexedData indexedData;
 
-				IndexedData indexedData = null;
 				if (transformedValue == null) {
-
-					indexedData = new RemoveIndexedData(new IndexedData() {
-						@Override
-						public String getIndexName() {
-							return indexDefinition.getIndexName();
-						}
-
-						@Override
-						public String getKeyspace() {
-							return indexDefinition.getKeyspace();
-						}
-					});
+					indexedData = new RemoveIndexedData(indexDefinition);
 				} else {
 					indexedData = indexedDataFactoryProvider.getIndexedDataFactory(indexDefinition).createIndexedDataFor(value);
 				}
+
 				data.add(indexedData);
 			}
 		}

src/main/java/org/springframework/data/redis/core/convert/RemoveIndexedData.java

@@ -15,6 +15,8 @@
  */
 package org.springframework.data.redis.core.convert;
 
+import org.springframework.data.redis.core.index.IndexDefinition;
+
 /**
  * {@link RemoveIndexedData} represents a removed index entry from a secondary index for a property path in a given keyspace.
  *
@@ -23,21 +25,20 @@ package org.springframework.data.redis.core.convert;
  */
 public class RemoveIndexedData implements IndexedData {
 
-	private final IndexedData delegate;
+	private final IndexDefinition indexDefinition;
 
-	RemoveIndexedData(IndexedData delegate) {
-		super();
-		this.delegate = delegate;
+	RemoveIndexedData(IndexDefinition indexDefinition) {
+		this.indexDefinition = indexDefinition;
 	}
 
 	@Override
 	public String getIndexName() {
-		return delegate.getIndexName();
+		return indexDefinition.getIndexName();
 	}
 
 	@Override
 	public String getKeyspace() {
-		return delegate.getKeyspace();
+		return indexDefinition.getKeyspace();
 	}
 
 	@Override

src/main/java/org/springframework/data/redis/core/index/IndexDefinition.java

@@ -24,7 +24,7 @@ import org.springframework.util.ObjectUtils;
 /**
  * {@link IndexDefinition} allow to set up a blueprint for creating secondary index structures in Redis. Setting up
  * conditions allows to define {@link Condition} that have to be passed in order to add a value to the index. This
- * allows to fine grained tune the index structure. {@link IndexValueTransformer} gets applied to the raw value for
+ * allows to fine-grained tune the index structure. {@link IndexValueTransformer} gets applied to the raw value for
  * creating the actual index entry.
  *
  * @author Christoph Strobl