DATAKV-95 - Added exists(…) method to QuerydslKeyValueRepository.

Renamed QueryDsl… classes to Querydsl… for consistency. Restructured test cases for repositories to make better use of generics.

src/main/java/org/springframework/data/keyvalue/repository/support/KeyValueQuerydslUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 the original author or authors.
+ * Copyright 2014-2015 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.
@@ -32,12 +32,15 @@ import com.mysema.query.types.Path;
 import com.mysema.query.types.path.PathBuilder;
 
 /**
+ * Utilities for Querydsl usage.
+ * 
  * @author Christoph Strobl
  * @author Thomas Darimont
+ * @author Oliver Gierke
  */
-abstract class KeyValueQueryDslUtils {
+abstract class KeyValueQuerydslUtils {
 
-	private KeyValueQueryDslUtils() {
+	private KeyValueQuerydslUtils() {
 		// prevent instantiation
 	}
 

src/main/java/org/springframework/data/keyvalue/repository/support/KeyValueRepositoryFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 the original author or authors.
+ * Copyright 2014-2015 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.
@@ -45,6 +45,7 @@ import org.springframework.util.ClassUtils;
  * {@link org.springframework.data.keyvalue.repository.KeyValueRepository}.
  * 
  * @author Christoph Strobl
+ * @author Oliver Gierke
  */
 public class KeyValueRepositoryFactory extends RepositoryFactorySupport {
 
@@ -106,7 +107,7 @@ public class KeyValueRepositoryFactory extends RepositoryFactorySupport {
 		EntityInformation<?, Serializable> entityInformation = getEntityInformation(metadata.getDomainType());
 
 		if (ClassUtils.isAssignable(QueryDslPredicateExecutor.class, metadata.getRepositoryInterface())) {
-			return new QueryDslKeyValueRepository(entityInformation, keyValueOperations);
+			return new QuerydslKeyValueRepository(entityInformation, keyValueOperations);
 		}
 
 		return new SimpleKeyValueRepository(entityInformation, keyValueOperations);
@@ -118,7 +119,7 @@ public class KeyValueRepositoryFactory extends RepositoryFactorySupport {
 	 */
 	@Override
 	protected Class<?> getRepositoryBaseClass(RepositoryMetadata metadata) {
-		return isQueryDslRepository(metadata.getRepositoryInterface()) ? QueryDslKeyValueRepository.class
+		return isQueryDslRepository(metadata.getRepositoryInterface()) ? QuerydslKeyValueRepository.class
 				: SimpleKeyValueRepository.class;
 	}
 

src/main/java/org/springframework/data/keyvalue/repository/support/QuerydslKeyValueRepository.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 the original author or authors.
+ * Copyright 2014-2015 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.
@@ -15,7 +15,7 @@
  */
 package org.springframework.data.keyvalue.repository.support;
 
-import static org.springframework.data.keyvalue.repository.support.KeyValueQueryDslUtils.*;
+import static org.springframework.data.keyvalue.repository.support.KeyValueQuerydslUtils.*;
 
 import java.io.Serializable;
 
@@ -42,10 +42,11 @@ import com.mysema.query.types.path.PathBuilder;
  * {@link KeyValueRepository} implementation capable of executing {@link Predicate}s using {@link CollQuery}.
  * 
  * @author Christoph Strobl
- * @param <T>
- * @param <ID>
+ * @author Oliver Gierke
+ * @param <T> the domain type to manage
+ * @param <ID> the identififer type of the domain type
  */
-public class QueryDslKeyValueRepository<T, ID extends Serializable> extends SimpleKeyValueRepository<T, ID> implements
+public class QuerydslKeyValueRepository<T, ID extends Serializable> extends SimpleKeyValueRepository<T, ID> implements
 		QueryDslPredicateExecutor<T> {
 
 	private static final EntityPathResolver DEFAULT_ENTITY_PATH_RESOLVER = SimpleEntityPathResolver.INSTANCE;
@@ -54,25 +55,25 @@ public class QueryDslKeyValueRepository<T, ID extends Serializable> extends Simp
 	private final PathBuilder<T> builder;
 
 	/**
-	 * Creates a new {@link QueryDslKeyValueRepository} for the given {@link EntityInformation} and
+	 * Creates a new {@link QuerydslKeyValueRepository} for the given {@link EntityInformation} and
 	 * {@link KeyValueOperations}.
 	 * 
 	 * @param entityInformation must not be {@literal null}.
 	 * @param operations must not be {@literal null}.
 	 */
-	public QueryDslKeyValueRepository(EntityInformation<T, ID> entityInformation, KeyValueOperations operations) {
+	public QuerydslKeyValueRepository(EntityInformation<T, ID> entityInformation, KeyValueOperations operations) {
 		this(entityInformation, operations, DEFAULT_ENTITY_PATH_RESOLVER);
 	}
 
 	/**
-	 * Creates a new {@link QueryDslKeyValueRepository} for the given {@link EntityInformation},
+	 * Creates a new {@link QuerydslKeyValueRepository} for the given {@link EntityInformation},
 	 * {@link KeyValueOperations} and {@link EntityPathResolver}.
 	 * 
 	 * @param entityInformation must not be {@literal null}.
 	 * @param operations must not be {@literal null}.
 	 * @param resolver must not be {@literal null}.
 	 */
-	public QueryDslKeyValueRepository(EntityInformation<T, ID> entityInformation, KeyValueOperations operations,
+	public QuerydslKeyValueRepository(EntityInformation<T, ID> entityInformation, KeyValueOperations operations,
 			EntityPathResolver resolver) {
 
 		super(entityInformation, operations);
@@ -162,6 +163,15 @@ public class QueryDslKeyValueRepository<T, ID extends Serializable> extends Simp
 		return prepareQuery(predicate).count();
 	}
 
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.querydsl.QueryDslPredicateExecutor#exists(com.mysema.query.types.Predicate)
+	 */
+	@Override
+	public boolean exists(Predicate predicate) {
+		return prepareQuery(predicate).exists();
+	}
+
 	/**
 	 * Creates executable query for given {@link Predicate}.
 	 *