Adding missing method to Edm interfaces to check whether an entity or a complex type is abstract

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

@@ -69,4 +69,8 @@ public class EdmComplexTypeImpl extends AbstractEdmComplexType {
     return helper.isOpenType();
   }
 
+  @Override
+  public boolean isAbstract() {
+    return helper.isAbstract();
+  }
 }

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

@@ -83,4 +83,8 @@ public class EdmEntityTypeImpl extends AbstractEdmEntityType {
     return helper.isOpenType();
   }
 
+  @Override
+  public boolean isAbstract() {
+    return helper.isAbstract();
+  }
 }

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

@@ -80,4 +80,12 @@ public class EdmStructuredTypeHelperImpl implements EdmStructuredTypeHelper {
             : false;
   }
 
+  @Override
+  public boolean isAbstract() {
+    return complexType instanceof org.apache.olingo.client.api.edm.xml.v4.ComplexType
+            ? ((org.apache.olingo.client.api.edm.xml.v4.ComplexType) complexType).isAbstractEntityType()
+            : complexType instanceof EntityType
+            ? ((EntityType) complexType).isAbstractEntityType()
+            : false;
+  }
 }

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

@@ -81,9 +81,16 @@ public interface EdmStructuredType extends EdmType {
   boolean compatibleTo(EdmType targetType);
 
   /**
-   * Indicates if the entity type is an open type.
+   * Indicates if the structured type is an open type.
    *
-   * @return <code>true</code> if the entity type is open
+   * @return <code>true</code> if the structured type is open
    */
   boolean isOpenType();
+
+  /**
+   * Indicates if the structured type is abstract.
+   *
+   * @return <code>true</code> if the structured type is abstract
+   */
+  boolean isAbstract();
 }

lib/commons-core/src/main/java/org/apache/olingo/commons/core/edm/EdmStructuredTypeHelper.java

@@ -31,4 +31,5 @@ public interface EdmStructuredTypeHelper {
 
   boolean isOpenType();
 
+  boolean isAbstract();
 }

lib/server-core/src/main/java/org/apache/olingo/server/core/edm/provider/EdmComplexTypeImpl.java

@@ -59,4 +59,8 @@ public class EdmComplexTypeImpl extends AbstractEdmComplexType {
     return helper.isOpenType();
   }
 
+  @Override
+  public boolean isAbstract() {
+    return helper.isAbstract();
+  }
 }

lib/server-core/src/main/java/org/apache/olingo/server/core/edm/provider/EdmEntityTypeImpl.java

@@ -93,4 +93,8 @@ public class EdmEntityTypeImpl extends AbstractEdmEntityType {
     return helper.isOpenType();
   }
 
+  @Override
+  public boolean isAbstract() {
+    return helper.isAbstract();
+  }
 }

lib/server-core/src/main/java/org/apache/olingo/server/core/edm/provider/EdmStructuredTypeHelperImpl.java

@@ -76,4 +76,8 @@ public class EdmStructuredTypeHelperImpl implements EdmStructuredTypeHelper {
     return structuredType.isOpenType();
   }
 
+  @Override
+  public boolean isAbstract() {
+    return structuredType.isAbstract();
+  }
 }