[OLINGO-595] Make EdmProvider an Interface

lib/client-core/src/main/java/org/apache/olingo/client/core/edm/ClientEdmProvider.java

@@ -24,13 +24,13 @@ import java.util.Map;
 
 import org.apache.olingo.commons.api.ODataException;
 import org.apache.olingo.commons.api.edm.FullQualifiedName;
+import org.apache.olingo.commons.api.edm.provider.AbstractEdmProvider;
 import org.apache.olingo.commons.api.edm.provider.Action;
 import org.apache.olingo.commons.api.edm.provider.ActionImport;
 import org.apache.olingo.commons.api.edm.provider.AliasInfo;
 import org.apache.olingo.commons.api.edm.provider.Annotatable;
 import org.apache.olingo.commons.api.edm.provider.Annotations;
 import org.apache.olingo.commons.api.edm.provider.ComplexType;
-import org.apache.olingo.commons.api.edm.provider.EdmProvider;
 import org.apache.olingo.commons.api.edm.provider.EntityContainer;
 import org.apache.olingo.commons.api.edm.provider.EntityContainerInfo;
 import org.apache.olingo.commons.api.edm.provider.EntitySet;
@@ -43,7 +43,7 @@ import org.apache.olingo.commons.api.edm.provider.Singleton;
 import org.apache.olingo.commons.api.edm.provider.Term;
 import org.apache.olingo.commons.api.edm.provider.TypeDefinition;
 
-public class ClientEdmProvider extends EdmProvider {
+public class ClientEdmProvider extends AbstractEdmProvider {
 
   private final Map<String, Schema> xmlSchemas;
 

lib/commons-api/src/main/java/org/apache/olingo/commons/api/edm/provider/AbstractEdmProvider.java

@@ -0,0 +1,116 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.olingo.commons.api.edm.provider;
+
+import java.util.List;
+
+import org.apache.olingo.commons.api.ODataException;
+import org.apache.olingo.commons.api.edm.FullQualifiedName;
+
+public abstract class AbstractEdmProvider implements EdmProvider {
+
+  @Override
+  public EnumType getEnumType(final FullQualifiedName enumTypeName) throws ODataException {
+    return null;
+  }
+
+  @Override
+  public TypeDefinition getTypeDefinition(final FullQualifiedName typeDefinitionName) throws ODataException {
+    return null;
+  }
+
+  @Override
+  public EntityType getEntityType(final FullQualifiedName entityTypeName) throws ODataException {
+    return null;
+  }
+
+  @Override
+  public ComplexType getComplexType(final FullQualifiedName complexTypeName) throws ODataException {
+    return null;
+  }
+
+  @Override
+  public List<Action> getActions(final FullQualifiedName actionName) throws ODataException {
+    return null;
+  }
+
+  @Override
+  public List<Function> getFunctions(final FullQualifiedName functionName) throws ODataException {
+    return null;
+  }
+
+  @Override
+  public Term getTerm(final FullQualifiedName termName) throws ODataException {
+    return null;
+  }
+
+  @Override
+  public EntitySet getEntitySet(final FullQualifiedName entityContainer, final String entitySetName)
+      throws ODataException {
+    return null;
+  }
+
+  @Override
+  public Singleton getSingleton(final FullQualifiedName entityContainer, final String singletonName)
+      throws ODataException {
+    return null;
+  }
+
+  @Override
+  public ActionImport getActionImport(final FullQualifiedName entityContainer, final String actionImportName)
+      throws ODataException {
+    return null;
+  }
+
+  @Override
+  public FunctionImport getFunctionImport(final FullQualifiedName entityContainer, final String functionImportName)
+      throws ODataException {
+    return null;
+  }
+
+  @Override
+  public EntityContainerInfo getEntityContainerInfo(final FullQualifiedName entityContainerName) throws ODataException {
+    return null;
+  }
+
+  @Override
+  public List<AliasInfo> getAliasInfos() throws ODataException {
+    return null;
+  }
+
+  @Override
+  public List<Schema> getSchemas() throws ODataException {
+    return null;
+  }
+
+  @Override
+  public EntityContainer getEntityContainer() throws ODataException {
+    return null;
+  }
+
+  @Override
+  public Annotations getAnnotationsGroup(FullQualifiedName targetName) throws ODataException {
+    return null;
+  }
+
+  @Override
+  public Annotatable getAnnoatatable(FullQualifiedName annotatedName) throws ODataException {
+    return null;
+  }
+}

lib/commons-api/src/main/java/org/apache/olingo/commons/api/edm/provider/EdmProvider.java

@@ -23,7 +23,7 @@ import java.util.List;
 import org.apache.olingo.commons.api.ODataException;
 import org.apache.olingo.commons.api.edm.FullQualifiedName;
 
-public abstract class EdmProvider {
+public interface EdmProvider {
 
   /**
    * This method should return an {@link EnumType} or <b>null</b> if nothing is found
@@ -32,9 +32,7 @@ public abstract class EdmProvider {
    * @return {@link EnumType} for given name
    * @throws ODataException
    */
-  public EnumType getEnumType(final FullQualifiedName enumTypeName) throws ODataException {
-    return null;
-  }
+  public EnumType getEnumType(final FullQualifiedName enumTypeName) throws ODataException;
 
   /**
    * This method should return an {@link TypeDefinition} or <b>null</b> if nothing is found
@@ -43,9 +41,7 @@ public abstract class EdmProvider {
    * @return {@link TypeDefinition} for given name
    * @throws ODataException
    */
-  public TypeDefinition getTypeDefinition(final FullQualifiedName typeDefinitionName) throws ODataException {
-    return null;
-  }
+  public TypeDefinition getTypeDefinition(final FullQualifiedName typeDefinitionName) throws ODataException;
 
   /**
    * This method should return an {@link EntityType} or <b>null</b> if nothing is found
@@ -54,9 +50,7 @@ public abstract class EdmProvider {
    * @return {@link EntityType} for the given name
    * @throws ODataException
    */
-  public EntityType getEntityType(final FullQualifiedName entityTypeName) throws ODataException {
-    return null;
-  }
+  public EntityType getEntityType(final FullQualifiedName entityTypeName) throws ODataException;
 
   /**
    * This method should return a {@link ComplexType} or <b>null</b> if nothing is found.
@@ -65,9 +59,7 @@ public abstract class EdmProvider {
    * @return {@link ComplexType} for the given name
    * @throws ODataException
    */
-  public ComplexType getComplexType(final FullQualifiedName complexTypeName) throws ODataException {
-    return null;
-  }
+  public ComplexType getComplexType(final FullQualifiedName complexTypeName) throws ODataException;
 
   /**
    * This method should return a list of all {@link Action} for the FullQualifiedname or <b>null</b> if nothing is found
@@ -76,9 +68,7 @@ public abstract class EdmProvider {
    * @return List of {@link Action} or null
    * @throws ODataException
    */
-  public List<Action> getActions(final FullQualifiedName actionName) throws ODataException {
-    return null;
-  }
+  public List<Action> getActions(final FullQualifiedName actionName) throws ODataException;
 
   /**
    * This method should return a list of all {@link Function} for the FullQualifiedname or <b>null</b> if nothing is
@@ -88,9 +78,7 @@ public abstract class EdmProvider {
    * @return List of {@link Function} or null
    * @throws ODataException
    */
-  public List<Function> getFunctions(final FullQualifiedName functionName) throws ODataException {
-    return null;
-  }
+  public List<Function> getFunctions(final FullQualifiedName functionName) throws ODataException;
 
   /**
    * This method should return a {@link Term} for the FullQualifiedName or <b>null</b> if nothing is found.
@@ -98,9 +86,7 @@ public abstract class EdmProvider {
    * @return {@link Term} or null
    * @throws ODataException
    */
-  public Term getTerm(final FullQualifiedName termName) throws ODataException {
-    return null;
-  }
+  public Term getTerm(final FullQualifiedName termName) throws ODataException;
 
   /**
    * This method should return an {@link EntitySet} or <b>null</b> if nothing is found
@@ -111,9 +97,7 @@ public abstract class EdmProvider {
    * @throws ODataException
    */
   public EntitySet getEntitySet(final FullQualifiedName entityContainer, final String entitySetName)
-      throws ODataException {
-    return null;
-  }
+      throws ODataException;
 
   /**
    * This method should return an {@link Singleton} or <b>null</b> if nothing is found
@@ -124,9 +108,7 @@ public abstract class EdmProvider {
    * @throws ODataException
    */
   public Singleton getSingleton(final FullQualifiedName entityContainer, final String singletonName)
-      throws ODataException {
-    return null;
-  }
+      throws ODataException;
 
   /**
    * This method should return an {@link ActionImport} or <b>null</b> if nothing is found
@@ -137,9 +119,7 @@ public abstract class EdmProvider {
    * @throws ODataException
    */
   public ActionImport getActionImport(final FullQualifiedName entityContainer, final String actionImportName)
-      throws ODataException {
-    return null;
-  }
+      throws ODataException;
 
   /**
    * This method should return a {@link FunctionImport} or <b>null</b> if nothing is found
@@ -150,9 +130,7 @@ public abstract class EdmProvider {
    * @throws ODataException
    */
   public FunctionImport getFunctionImport(final FullQualifiedName entityContainer, final String functionImportName)
-      throws ODataException {
-    return null;
-  }
+      throws ODataException;
 
   /**
    * This method should return an {@link EntityContainerInfo} or <b>null</b> if nothing is found
@@ -161,9 +139,7 @@ public abstract class EdmProvider {
    * @return {@link EntityContainerInfo} for the given name
    * @throws ODataException
    */
-  public EntityContainerInfo getEntityContainerInfo(final FullQualifiedName entityContainerName) throws ODataException {
-    return null;
-  }
+  public EntityContainerInfo getEntityContainerInfo(final FullQualifiedName entityContainerName) throws ODataException;
 
   /**
    * This method should return a list of all namespaces which have an alias
@@ -171,9 +147,7 @@ public abstract class EdmProvider {
    * @return List of alias info
    * @throws ODataException
    */
-  public List<AliasInfo> getAliasInfos() throws ODataException {
-    return null;
-  }
+  public List<AliasInfo> getAliasInfos() throws ODataException;
 
   /**
    * This method should return a collection of all {@link Schema}
@@ -181,31 +155,23 @@ public abstract class EdmProvider {
    * @return List<{@link Schema}>
    * @throws ODataException
    */
-  public List<Schema> getSchemas() throws ODataException {
-    return null;
-  }
+  public List<Schema> getSchemas() throws ODataException;
 
   /**
    * Returns the entity container of this edm
    * @return {@link EntityContainer} of this edm
    */
-  public EntityContainer getEntityContainer() throws ODataException {
-    return null;
-  }
+  public EntityContainer getEntityContainer() throws ODataException;
 
   /**
    * @param targetName
    * @return {@link Annotations} group for the given Target
    */
-  public Annotations getAnnotationsGroup(FullQualifiedName targetName) throws ODataException {
-    return null;
-  }
+  public Annotations getAnnotationsGroup(FullQualifiedName targetName) throws ODataException;
 
   /**
    * @param annotatedName
    * @return Annotatble element by target name
    */
-  public Annotatable getAnnoatatable(FullQualifiedName annotatedName) throws ODataException {
-    return null;
-  }
+  public Annotatable getAnnoatatable(FullQualifiedName annotatedName) throws ODataException;
 }

lib/server-core/src/test/java/org/apache/olingo/server/core/edm/provider/EdmEntityContainerImplTest.java

@@ -18,6 +18,17 @@
  */
 package org.apache.olingo.server.core.edm.provider;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.util.ArrayList;
+import java.util.List;
+
 import org.apache.olingo.commons.api.ODataException;
 import org.apache.olingo.commons.api.edm.EdmActionImport;
 import org.apache.olingo.commons.api.edm.EdmEntityContainer;
@@ -26,6 +37,7 @@ import org.apache.olingo.commons.api.edm.EdmException;
 import org.apache.olingo.commons.api.edm.EdmFunctionImport;
 import org.apache.olingo.commons.api.edm.EdmSingleton;
 import org.apache.olingo.commons.api.edm.FullQualifiedName;
+import org.apache.olingo.commons.api.edm.provider.AbstractEdmProvider;
 import org.apache.olingo.commons.api.edm.provider.ActionImport;
 import org.apache.olingo.commons.api.edm.provider.EdmProvider;
 import org.apache.olingo.commons.api.edm.provider.EntityContainer;
@@ -38,17 +50,6 @@ import org.apache.olingo.commons.core.edm.provider.EdmProviderImpl;
 import org.junit.Before;
 import org.junit.Test;
 
-import java.util.ArrayList;
-import java.util.List;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.when;
-
 public class EdmEntityContainerImplTest {
 
   EdmEntityContainer container;
@@ -231,7 +232,7 @@ public class EdmEntityContainerImplTest {
     assertNull(container.getEntitySet(null));
   }
 
-  private class CustomProvider extends EdmProvider {
+  private class CustomProvider extends AbstractEdmProvider {
     @Override
     public EntitySet getEntitySet(final FullQualifiedName entityContainer, final String entitySetName)
         throws ODataException {

lib/server-core/src/test/java/org/apache/olingo/server/core/edm/provider/EdmSchemaImplTest.java

@@ -18,6 +18,15 @@
  */
 package org.apache.olingo.server.core.edm.provider;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.util.ArrayList;
+import java.util.List;
+
 import org.apache.olingo.commons.api.ODataException;
 import org.apache.olingo.commons.api.edm.Edm;
 import org.apache.olingo.commons.api.edm.EdmAction;
@@ -34,6 +43,7 @@ import org.apache.olingo.commons.api.edm.EdmSchema;
 import org.apache.olingo.commons.api.edm.EdmSingleton;
 import org.apache.olingo.commons.api.edm.EdmTypeDefinition;
 import org.apache.olingo.commons.api.edm.FullQualifiedName;
+import org.apache.olingo.commons.api.edm.provider.AbstractEdmProvider;
 import org.apache.olingo.commons.api.edm.provider.Action;
 import org.apache.olingo.commons.api.edm.provider.ActionImport;
 import org.apache.olingo.commons.api.edm.provider.AliasInfo;
@@ -54,15 +64,6 @@ import org.apache.olingo.commons.core.edm.provider.EdmProviderImpl;
 import org.junit.Before;
 import org.junit.Test;
 
-import java.util.ArrayList;
-import java.util.List;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.when;
-
 public class EdmSchemaImplTest {
 
   private EdmSchema schema;
@@ -204,7 +205,7 @@ public class EdmSchemaImplTest {
     assertTrue(container == edm.getEntityContainer(null));
   }
 
-  private class LocalProvider extends EdmProvider {
+  private class LocalProvider extends AbstractEdmProvider {
 
     private static final String ALIAS = "alias";
     private static final String NAMESPACE = "org.namespace";

lib/server-core/src/test/java/org/apache/olingo/server/core/serializer/xml/MetadataDocumentXmlSerializerTest.java

@@ -38,6 +38,7 @@ import org.apache.olingo.commons.api.edm.EdmComplexType;
 import org.apache.olingo.commons.api.edm.EdmPrimitiveTypeKind;
 import org.apache.olingo.commons.api.edm.EdmSchema;
 import org.apache.olingo.commons.api.edm.FullQualifiedName;
+import org.apache.olingo.commons.api.edm.provider.AbstractEdmProvider;
 import org.apache.olingo.commons.api.edm.provider.Action;
 import org.apache.olingo.commons.api.edm.provider.ActionImport;
 import org.apache.olingo.commons.api.edm.provider.AliasInfo;
@@ -262,7 +263,7 @@ public class MetadataDocumentXmlSerializerTest {
         + "</ComplexType>"));
   }
 
-  private class LocalProvider extends EdmProvider {
+  private class LocalProvider extends AbstractEdmProvider {
     private final static String nameSpace = "namespace";
 
     private final FullQualifiedName nameETAbstract = new FullQualifiedName(nameSpace, "ETAbstract");

lib/server-tecsvc/src/main/java/org/apache/olingo/server/tecsvc/provider/EdmTechProvider.java

@@ -18,14 +18,17 @@
  */
 package org.apache.olingo.server.tecsvc.provider;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
 import org.apache.olingo.commons.api.ODataException;
-import org.apache.olingo.server.api.edmx.EdmxReference;
 import org.apache.olingo.commons.api.edm.FullQualifiedName;
+import org.apache.olingo.commons.api.edm.provider.AbstractEdmProvider;
 import org.apache.olingo.commons.api.edm.provider.Action;
 import org.apache.olingo.commons.api.edm.provider.ActionImport;
 import org.apache.olingo.commons.api.edm.provider.AliasInfo;
 import org.apache.olingo.commons.api.edm.provider.ComplexType;
-import org.apache.olingo.commons.api.edm.provider.EdmProvider;
 import org.apache.olingo.commons.api.edm.provider.EntityContainer;
 import org.apache.olingo.commons.api.edm.provider.EntityContainerInfo;
 import org.apache.olingo.commons.api.edm.provider.EntitySet;
@@ -37,12 +40,9 @@ import org.apache.olingo.commons.api.edm.provider.Schema;
 import org.apache.olingo.commons.api.edm.provider.Singleton;
 import org.apache.olingo.commons.api.edm.provider.Term;
 import org.apache.olingo.commons.api.edm.provider.TypeDefinition;
+import org.apache.olingo.server.api.edmx.EdmxReference;
 
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-
-public class EdmTechProvider extends EdmProvider {
+public class EdmTechProvider extends AbstractEdmProvider {
 
   public static final String nameSpace = "olingo.odata.test1";
 

lib/server-test/src/test/java/org/apache/olingo/server/core/ODataHandlerTest.java

@@ -39,7 +39,7 @@ import org.apache.commons.io.IOUtils;
 import org.apache.olingo.commons.api.ODataException;
 import org.apache.olingo.commons.api.edm.FullQualifiedName;
 import org.apache.olingo.commons.api.edm.constants.ODataServiceVersion;
-import org.apache.olingo.commons.api.edm.provider.EdmProvider;
+import org.apache.olingo.commons.api.edm.provider.AbstractEdmProvider;
 import org.apache.olingo.commons.api.edm.provider.EntitySet;
 import org.apache.olingo.commons.api.format.ContentType;
 import org.apache.olingo.commons.api.format.ODataFormat;
@@ -223,7 +223,7 @@ public class ODataHandlerTest {
   public void uriParserExceptionResultsInRightResponseEdmCause() throws Exception {
     final OData odata = OData.newInstance();
     final ServiceMetadata serviceMetadata = odata.createServiceMetadata(
-        new EdmProvider() {
+        new AbstractEdmProvider() {
           public EntitySet getEntitySet(final FullQualifiedName entityContainer, final String entitySetName)
               throws ODataException {
             throw new ODataException("msg");

samples/server/src/main/java/org/apache/olingo/server/sample/edmprovider/CarsEdmProvider.java

@@ -25,8 +25,8 @@ import java.util.List;
 import org.apache.olingo.commons.api.ODataException;
 import org.apache.olingo.commons.api.edm.EdmPrimitiveTypeKind;
 import org.apache.olingo.commons.api.edm.FullQualifiedName;
+import org.apache.olingo.commons.api.edm.provider.AbstractEdmProvider;
 import org.apache.olingo.commons.api.edm.provider.ComplexType;
-import org.apache.olingo.commons.api.edm.provider.EdmProvider;
 import org.apache.olingo.commons.api.edm.provider.EntityContainer;
 import org.apache.olingo.commons.api.edm.provider.EntityContainerInfo;
 import org.apache.olingo.commons.api.edm.provider.EntitySet;
@@ -37,7 +37,7 @@ import org.apache.olingo.commons.api.edm.provider.Property;
 import org.apache.olingo.commons.api.edm.provider.PropertyRef;
 import org.apache.olingo.commons.api.edm.provider.Schema;
 
-public class CarsEdmProvider extends EdmProvider {
+public class CarsEdmProvider extends AbstractEdmProvider {
 
   // Service Namespace
   public static final String NAMESPACE = "olingo.odata.sample";