DATACOUCH-134 - allow changing the name of field storing type.

src/integration/java/org/springframework/data/couchbase/IntegrationTestApplicationConfig.java

@@ -64,4 +64,10 @@ public class IntegrationTestApplicationConfig extends AbstractCouchbaseConfigura
 		template.setWriteResultChecking(WriteResultChecking.LOG);
 		return template;
 	}
+
+  //change the name of the field that will hold type information
+	@Override
+	public String typeKey() {
+		return "javaClass";
+	}
 }

src/integration/java/org/springframework/data/couchbase/config/CouchbaseTemplateParserIntegrationTests.java

@@ -16,8 +16,10 @@
 
 package org.springframework.data.couchbase.config;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.*;
 
+import com.couchbase.client.java.document.JsonDocument;
+import com.couchbase.client.java.document.json.JsonObject;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -26,6 +28,9 @@ import org.springframework.beans.factory.support.BeanDefinitionReader;
 import org.springframework.beans.factory.support.DefaultListableBeanFactory;
 import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
 import org.springframework.core.io.ClassPathResource;
+import org.springframework.data.couchbase.core.CouchbaseTemplate;
+import org.springframework.data.couchbase.core.convert.MappingCouchbaseConverter;
+import org.springframework.data.couchbase.repository.User;
 
 /**
  * @author Michael Nitschinger
@@ -72,4 +77,27 @@ public class CouchbaseTemplateParserIntegrationTests {
 		factory.getBean("cb-template-second");
 	}
 
+	/**
+	 * Test case for DATACOUCH-134 in xml: field for storing type information can be renamed.
+	 */
+	@Test
+	public void testTypeFieldCanBeChosen() {
+		reader.loadBeanDefinitions(new ClassPathResource("configurations/couchbase-typekey.xml"));
+		CouchbaseTemplate template = factory.getBean("couchbaseTemplate", CouchbaseTemplate.class);
+
+		assertTrue(template.getConverter() instanceof MappingCouchbaseConverter);
+		MappingCouchbaseConverter converter = ((MappingCouchbaseConverter) template.getConverter());
+
+		assertEquals("javaXmlClass", converter.getTypeKey());
+
+    User u = new User("specialSaveUser", "John Locke");
+    template.save(u);
+    JsonDocument uJsonDoc = template.getCouchbaseBucket().get("specialSaveUser");
+    template.getCouchbaseBucket().remove("specialSaveUser");
+    assertNotNull(uJsonDoc);
+    JsonObject uJson = uJsonDoc.content();
+    assertNull(uJson.get(MappingCouchbaseConverter.TYPEKEY_DEFAULT));
+    assertEquals("org.springframework.data.couchbase.repository.User", uJson.getString("javaXmlClass"));
+    assertEquals("John Locke", uJson.getString("username"));
+	}
 }

src/integration/java/org/springframework/data/couchbase/core/CouchbaseTemplateTests.java

@@ -50,6 +50,7 @@ import org.springframework.dao.OptimisticLockingFailureException;
 import org.springframework.data.annotation.Id;
 import org.springframework.data.annotation.Version;
 import org.springframework.data.couchbase.IntegrationTestApplicationConfig;
+import org.springframework.data.couchbase.core.convert.MappingCouchbaseConverter;
 import org.springframework.data.couchbase.core.mapping.Document;
 import org.springframework.data.couchbase.core.mapping.Field;
 import org.springframework.test.context.ContextConfiguration;
@@ -95,7 +96,9 @@ public class CouchbaseTemplateTests {
 		assertNotNull(result);
 		Map<String, Object> resultConv = MAPPER.readValue(result, new TypeReference<Map<String, Object>>() {});
 
-		assertEquals("org.springframework.data.couchbase.core.Beer", resultConv.get("_class"));
+		//DATACOUCH-134: the class holding field can be changed
+		assertNull(resultConv.get(MappingCouchbaseConverter.TYPEKEY_DEFAULT));
+		assertEquals("org.springframework.data.couchbase.core.Beer", resultConv.get("javaClass"));
 		assertEquals(false, resultConv.get("is_active"));
 		assertEquals("The Awesome Stout", resultConv.get("name"));
 	}

src/integration/resources/configurations/couchbase-typekey.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:couchbase="http://www.springframework.org/schema/data/couchbase"
+       xsi:schemaLocation="http://www.springframework.org/schema/data/couchbase http://www.springframework.org/schema/data/couchbase/spring-couchbase.xsd
+		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+    <couchbase:env/>
+    <couchbase:cluster/>
+    <couchbase:bucket/>
+
+    <!--note that the template needs both converter and translation service if you want to customize converter-->
+    <couchbase:template translation-service-ref="myCustomTranslationService" converter-ref="myCustomConverter"/>
+
+    <bean id="myCustomTranslationService" class="org.springframework.data.couchbase.core.convert.translation.JacksonTranslationService"/>
+
+    <bean id="myCustomConverter" class="org.springframework.data.couchbase.core.convert.MappingCouchbaseConverter">
+            <!--this is a consequence of having to customize the converter-->
+            <!--WARNING this example is incomplete, look at couchbaseMappingContext() in AbstractCouchbaseConfiguration -->
+            <constructor-arg index="0" type="org.springframework.data.mapping.context.MappingContext">
+                    <ref bean="myCustomMappingContext"/>
+            </constructor-arg>
+            <!--this is where you customize the class field in JSON -->
+            <constructor-arg index="1" type="java.lang.String" value="javaXmlClass"/>
+    </bean>
+
+    <!--WARNING this example is incomplete, look at couchbaseMappingContext() in AbstractCouchbaseConfiguration -->
+    <bean id="myCustomMappingContext" class="org.springframework.data.couchbase.core.mapping.CouchbaseMappingContext" />
+
+</beans>