DATAES-29, ISSUE #16 - added interface EntityMapper to allow for custom implementation and configuration for ObjectMapper

src/test/java/org/springframework/data/elasticsearch/core/CustomEntityMapper.java

@@ -0,0 +1,19 @@
+package org.springframework.data.elasticsearch.core;
+
+import java.io.IOException;
+
+/**
+ * @author Artur Konczak
+ */
+public class CustomEntityMapper implements EntityMapper {
+
+    @Override
+    public String mapToString(Object object) throws IOException {
+        return null;
+    }
+
+    @Override
+    public <T> T mapToObject(String source, Class<T> clazz) throws IOException {
+        return null;
+    }
+}

src/test/java/org/springframework/data/elasticsearch/core/ElasticsearchTemplateCustomMapperTests.java

@@ -0,0 +1,48 @@
+/*
+ * 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.elasticsearch.core;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertThat;
+
+/**
+ * @author Artur Konczak
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration("classpath:elasticsearch-template-custom-mapper.xml")
+public class ElasticsearchTemplateCustomMapperTests {
+
+    @Autowired
+    private ElasticsearchTemplate elasticsearchTemplate;
+
+    @Autowired
+    private EntityMapper entityMapper;
+
+    @Test
+    public void shouldUseCustomMapper() {
+        //given
+        //when
+        //them
+        assertThat(elasticsearchTemplate.getEntityMapper(), is(entityMapper));
+    }
+
+}