DATACOUCH-184 - Fix support for defining repository base class

This fixes the fact that EnableCouchbaseRepository(repositoryBaseClass = Something.class) was ignored.

Now using reflection to choose the target implementation. Note that custom base classes MUST extend SimpleCouchbaseRepository (or its subclass N1qlCouchbaseRepository).

An example in the form of an integration test has been added in src/integration/java/org/springframework/data/couchbase/repository/base/RepositoryBaseTest.java.

src/integration/java/org/springframework/data/couchbase/repository/base/RepositoryBaseTest.java

@@ -0,0 +1,114 @@
+/*
+ * Copyright 2013 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 org.springframework.data.couchbase.repository.base;
+
+import static org.junit.Assert.*;
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.util.Arrays;
+import java.util.List;
+
+import com.couchbase.client.java.cluster.ClusterInfo;
+import com.couchbase.client.java.util.features.CouchbaseFeature;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.couchbase.config.AbstractCouchbaseConfiguration;
+import org.springframework.data.couchbase.core.CouchbaseOperations;
+import org.springframework.data.couchbase.repository.base.impl.MyRepository;
+import org.springframework.data.couchbase.repository.base.impl.MyRepositoryImpl;
+import org.springframework.data.couchbase.repository.config.EnableCouchbaseRepositories;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+/**
+ * This tests custom implementation of base repository.
+ *
+ * @author Simon Baslé
+ */
+@SuppressWarnings("SpringJavaAutowiringInspection")
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration
+public class RepositoryBaseTest {
+
+  private static CouchbaseOperations mockOpsA;
+
+  @BeforeClass
+  public static void initMocks() {
+    ClusterInfo info = mock(ClusterInfo.class);
+    when(info.checkAvailable(any(CouchbaseFeature.class))).thenReturn(true);
+
+    mockOpsA = mock(CouchbaseOperations.class);
+    when(mockOpsA.getCouchbaseClusterInfo()).thenReturn(info);
+    when(mockOpsA.exists(any(String.class))).thenReturn(true);
+  }
+
+  @Autowired
+  ItemRepository repositoryA;
+
+  public interface ItemRepository extends MyRepository<Item, String> {
+    //
+  }
+
+  @Configuration
+  @EnableCouchbaseRepositories(considerNestedRepositories = true, repositoryBaseClass = MyRepositoryImpl.class)
+  static class Config extends AbstractCouchbaseConfiguration {
+
+    @Override
+    protected List<String> getBootstrapHosts() {
+      return Arrays.asList("127.0.0.1");
+    }
+
+    @Override
+    protected String getBucketName() {
+      return "default";
+    }
+
+    @Override
+    protected String getBucketPassword() {
+      return "";
+    }
+
+    @Bean
+    public CouchbaseOperations couchbaseOperations() {
+      return mockOpsA;
+    }
+  }
+
+  @Test
+  public void testRepositoryBaseIsChanged() {
+    assertNotNull(repositoryA);
+
+    assertEquals(4, repositoryA.sharedCustomMethod("toto"));
+    assertEquals(4000, repositoryA.sharedCustomMethod("anna"));
+  }
+
+  private static class Item {
+    @Id
+    public String id;
+
+    public String value;
+  }
+
+}

src/integration/java/org/springframework/data/couchbase/repository/base/impl/MyRepository.java

@@ -0,0 +1,12 @@
+package org.springframework.data.couchbase.repository.base.impl;
+
+import java.io.Serializable;
+
+import org.springframework.data.couchbase.repository.CouchbaseRepository;
+import org.springframework.data.repository.NoRepositoryBean;
+
+@NoRepositoryBean
+public interface MyRepository<T, ID extends Serializable> extends CouchbaseRepository<T, ID> {
+
+  int sharedCustomMethod(ID id);
+}

src/integration/java/org/springframework/data/couchbase/repository/base/impl/MyRepositoryImpl.java

@@ -0,0 +1,24 @@
+package org.springframework.data.couchbase.repository.base.impl;
+
+import java.io.Serializable;
+
+import org.springframework.data.couchbase.core.CouchbaseOperations;
+import org.springframework.data.couchbase.repository.query.CouchbaseEntityInformation;
+import org.springframework.data.couchbase.repository.support.N1qlCouchbaseRepository;
+
+public class MyRepositoryImpl<T, ID extends Serializable>
+    extends N1qlCouchbaseRepository<T, ID>
+    implements MyRepository<T, ID> {
+
+  public MyRepositoryImpl(CouchbaseEntityInformation<T, String> metadata, CouchbaseOperations couchbaseOperations) {
+    super(metadata, couchbaseOperations);
+  }
+
+  @Override
+  public int sharedCustomMethod(ID id) {
+    String key = String.valueOf(id);
+    if (key.startsWith("a"))
+      return key.length() * 1000;
+    return key.length();
+  }
+}