unify defining structs, traits and class types

src/main/java/org/apache/metadata/types/ClassType.java

@@ -40,12 +40,12 @@ public class ClassType extends HierarchicalType<ClassType, IReferenceableInstanc
      * Used when creating a ClassType, to support recursive Structs.
      */
     ClassType(TypeSystem typeSystem, String name, ImmutableList<String> superTypes, int numFields) {
-        super(typeSystem, name, superTypes, numFields);
+        super(typeSystem, ClassType.class, name, superTypes, numFields);
     }
 
     ClassType(TypeSystem typeSystem, String name, ImmutableList<String> superTraits, AttributeInfo... fields)
             throws MetadataException {
-        super(typeSystem, name, superTraits, fields);
+        super(typeSystem, ClassType.class, name, superTraits, fields);
     }
 
     @Override

src/main/java/org/apache/metadata/types/HierarchicalType.java

@@ -36,6 +36,7 @@ public abstract class HierarchicalType<ST extends HierarchicalType,T> extends Ab
         implements Comparable<ST> {
 
     public final TypeSystem typeSystem;
+    public final Class<ST> superTypeClass;
     public final String name;
     public final FieldMapping fieldMapping;
     public final int numFields;
@@ -47,8 +48,10 @@ public abstract class HierarchicalType<ST extends HierarchicalType,T> extends Ab
     /**
      * Used when creating a Type, to support recursive Structs.
      */
-    HierarchicalType(TypeSystem typeSystem, String name, ImmutableList<String> superTypes, int numFields) {
+    HierarchicalType(TypeSystem typeSystem, Class<ST> superTypeClass,
+                     String name, ImmutableList<String> superTypes, int numFields) {
         this.typeSystem = typeSystem;
+        this.superTypeClass = superTypeClass;
         this.name = name;
         this.fieldMapping = null;
         this.numFields = numFields;
@@ -56,9 +59,11 @@ public abstract class HierarchicalType<ST extends HierarchicalType,T> extends Ab
         this.immediateAttrs = null;
     }
 
-    HierarchicalType(TypeSystem typeSystem, String name, ImmutableList<String> superTypes, AttributeInfo... fields)
+    HierarchicalType(TypeSystem typeSystem, Class<ST> superTypeClass,
+                     String name, ImmutableList<String> superTypes, AttributeInfo... fields)
             throws MetadataException {
         this.typeSystem = typeSystem;
+        this.superTypeClass = superTypeClass;
         this.name = name;
         this.fieldMapping = constructFieldMapping(superTypes,
                 fields);
@@ -115,8 +120,9 @@ public abstract class HierarchicalType<ST extends HierarchicalType,T> extends Ab
         queue.add(new Node(getName()));
         while(!queue.isEmpty()) {
             Path currentPath = queue.poll();
+
             ST superType = currentPath.typeName == getName() ? (ST) this :
-                    (ST) typeSystem.dataType(currentPath.typeName);
+                    (ST) typeSystem.getDataType(superTypeClass, currentPath.typeName);
 
             pathNameToPathMap.put(currentPath.pathName, currentPath);
             if ( superType != this ) {
@@ -248,7 +254,7 @@ public abstract class HierarchicalType<ST extends HierarchicalType,T> extends Ab
                                 superTypeName, getName()));
             }
 
-            ST superType = (ST) typeSystem.dataType(superTypeName);
+            ST superType = (ST) typeSystem.getDataType(superTypeClass, superTypeName);
             Map<String, String> downCastMap = superType.constructDowncastFieldMap(this, pathToSuper.get(0));
             return new DownCastStructInstance(superTypeName,
                     new DownCastFieldMapping(ImmutableMap.copyOf(downCastMap)),
@@ -318,7 +324,12 @@ public abstract class HierarchicalType<ST extends HierarchicalType,T> extends Ab
         @Override
         public Path next() {
             Path p = pathQueue.poll();
-            ST t = (ST) typeSystem.dataType(p.typeName);
+            ST t = null;
+            try {
+                t = (ST) typeSystem.getDataType(superTypeClass, p.typeName);
+            } catch(MetadataException me) {
+                throw new RuntimeException(me);
+            }
             if ( t.superTypes != null ) {
                 ImmutableList<String> sTs = t.superTypes;
                 for(String sT : sTs) {

src/main/java/org/apache/metadata/types/ClassTypeDefinition.java → src/main/java/org/apache/metadata/types/HierarchicalTypeDefinition.java

@@ -20,16 +20,14 @@ package org.apache.metadata.types;
 
 import com.google.common.collect.ImmutableList;
 
-public class ClassTypeDefinition {
+public class HierarchicalTypeDefinition<T extends HierarchicalType>  extends StructTypeDefinition {
 
-    public final String typeName;
-    public final ImmutableList<String> superTraits;
-    public final AttributeDefinition[] attributeDefinitions;
+    public final ImmutableList<String> superTypes;
 
-    public ClassTypeDefinition(String typeName, ImmutableList<String> superTraits,
-                               AttributeDefinition[] attributeDefinitions) {
-        this.typeName = typeName;
-        this.superTraits = superTraits == null ? ImmutableList.<String>of() : superTraits;
-        this.attributeDefinitions = attributeDefinitions;
+    public HierarchicalTypeDefinition(Class<T> hierarchicalMetaType,
+                                      String typeName, ImmutableList<String> superTypes,
+                                      AttributeDefinition[] attributeDefinitions) {
+        super(typeName, attributeDefinitions);
+        this.superTypes = superTypes == null ? ImmutableList.<String>of() : superTypes;
     }
-}
+}
\ No newline at end of file

src/main/java/org/apache/metadata/types/StructTypeDefinition.java

+package org.apache.metadata.types;
+
+import com.google.common.collect.ImmutableList;
+
+public class StructTypeDefinition {
+
+    public final String typeName;
+    public final AttributeDefinition[] attributeDefinitions;
+
+    public StructTypeDefinition(String typeName,
+                                AttributeDefinition[] attributeDefinitions) {
+        this.typeName = typeName;
+        this.attributeDefinitions = attributeDefinitions;
+    }
+}

src/main/java/org/apache/metadata/types/TraitType.java

@@ -32,13 +32,13 @@ public class TraitType extends HierarchicalType<TraitType, IStruct>
      * Used when creating a TraitType, to support recursive Structs.
      */
     TraitType(TypeSystem typeSystem, String name, ImmutableList<String> superTraits, int numFields) {
-        super(typeSystem, name, superTraits, numFields);
+        super(typeSystem, TraitType.class, name, superTraits, numFields);
         handler = null;
     }
 
     TraitType(TypeSystem typeSystem, String name, ImmutableList<String> superTraits, AttributeInfo... fields)
             throws MetadataException {
-        super(typeSystem, name, superTraits, fields);
+        super(typeSystem, TraitType.class, name, superTraits, fields);
         handler = new TypedStructHandler(this);
     }
 

src/main/java/org/apache/metadata/types/TraitTypeDefinition.java

-/**
- * 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.metadata.types;
-
-import com.google.common.collect.ImmutableList;
-
-public class TraitTypeDefinition {
-
-    public final String typeName;
-    public final ImmutableList<String> superTraits;
-    public final AttributeDefinition[] attributeDefinitions;
-
-    public TraitTypeDefinition(String typeName, ImmutableList<String> superTraits,
-                               AttributeDefinition[] attributeDefinitions) {
-        this.typeName = typeName;
-        this.superTraits = superTraits == null ? ImmutableList.<String>of() : superTraits;
-        this.attributeDefinitions = attributeDefinitions;
-    }
-}

src/test/java/org/apache/metadata/BaseTest.java

@@ -21,13 +21,9 @@ package org.apache.metadata;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-import junit.framework.TestCase;
-import org.apache.metadata.storage.IRepository;
 import org.apache.metadata.storage.memory.MemRepository;
 import org.apache.metadata.types.*;
 import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
 
 import java.math.BigDecimal;
 import java.math.BigInteger;
@@ -126,18 +122,18 @@ public abstract class BaseTest {
         return new AttributeDefinition(name, dataType, Multiplicity.REQUIRED, false, null);
     }
 
-    protected Map<String, TraitType> defineTraits(TraitTypeDefinition... tDefs) throws MetadataException {
-        return ms.getTypeSystem().defineTraitTypes(true, tDefs);
+    protected Map<String, IDataType> defineTraits(HierarchicalTypeDefinition... tDefs) throws MetadataException {
+        return ms.getTypeSystem().defineTraitTypes(tDefs);
     }
 
-    protected TraitTypeDefinition createTraitTypeDef(String name, ImmutableList<String> superTypes,
+    protected HierarchicalTypeDefinition<TraitType> createTraitTypeDef(String name, ImmutableList<String> superTypes,
                                         AttributeDefinition... attrDefs) {
-        return new TraitTypeDefinition(name, superTypes, attrDefs);
+        return new HierarchicalTypeDefinition(TraitType.class, name, superTypes, attrDefs);
     }
 
-    protected ClassTypeDefinition createClassTypeDef(String name, ImmutableList<String> superTypes,
+    protected HierarchicalTypeDefinition<ClassType> createClassTypeDef(String name, ImmutableList<String> superTypes,
                                                      AttributeDefinition... attrDefs) {
-        return new ClassTypeDefinition(name, superTypes, attrDefs);
+        return new HierarchicalTypeDefinition(ClassType.class, name, superTypes, attrDefs);
     }
 
 }

src/test/java/org/apache/metadata/TraitTest.java

@@ -2,13 +2,10 @@ package org.apache.metadata;
 
 import com.google.common.collect.ImmutableList;
 import org.junit.Assert;
-import org.apache.metadata.storage.StructInstance;
 import org.apache.metadata.types.*;
 import org.junit.Before;
 import org.junit.Test;
 
-import java.util.Map;
-
 public class TraitTest extends BaseTest {
 
 
@@ -34,16 +31,16 @@ public class TraitTest extends BaseTest {
      */
     @Test
     public void test1() throws MetadataException {
-        TraitTypeDefinition A = createTraitTypeDef("A", null,
+        HierarchicalTypeDefinition A = createTraitTypeDef("A", null,
                 createRequiredAttrDef("a", DataTypes.INT_TYPE),
                 createOptionalAttrDef("b", DataTypes.BOOLEAN_TYPE),
                 createOptionalAttrDef("c", DataTypes.BYTE_TYPE),
                 createOptionalAttrDef("d", DataTypes.SHORT_TYPE));
-        TraitTypeDefinition B = createTraitTypeDef("B", ImmutableList.<String>of("A"),
+        HierarchicalTypeDefinition B = createTraitTypeDef("B", ImmutableList.<String>of("A"),
                 createOptionalAttrDef("b", DataTypes.BOOLEAN_TYPE));
-        TraitTypeDefinition C = createTraitTypeDef("C", ImmutableList.<String>of("A"),
+        HierarchicalTypeDefinition C = createTraitTypeDef("C", ImmutableList.<String>of("A"),
                 createOptionalAttrDef("c", DataTypes.BYTE_TYPE));
-        TraitTypeDefinition D = createTraitTypeDef("D", ImmutableList.<String>of("B", "C"),
+        HierarchicalTypeDefinition D = createTraitTypeDef("D", ImmutableList.<String>of("B", "C"),
                 createOptionalAttrDef("d", DataTypes.SHORT_TYPE));
 
         defineTraits(A, B, C, D);

src/test/scala/org/apache/metadata/json/SerializationTest.scala

@@ -78,16 +78,16 @@ class SerializationTest extends BaseTest {
   }
 
   @Test def testTrait {
-    val A: TraitTypeDefinition = createTraitTypeDef("A", null,
+    val A: HierarchicalTypeDefinition[TraitType] = createTraitTypeDef("A", null,
       BaseTest.createRequiredAttrDef("a", DataTypes.INT_TYPE),
       BaseTest.createOptionalAttrDef("b", DataTypes.BOOLEAN_TYPE),
       BaseTest.createOptionalAttrDef("c", DataTypes.BYTE_TYPE),
       BaseTest.createOptionalAttrDef("d", DataTypes.SHORT_TYPE))
-    val B: TraitTypeDefinition = createTraitTypeDef("B", ImmutableList.of[String]("A"),
+    val B: HierarchicalTypeDefinition[TraitType] = createTraitTypeDef("B", ImmutableList.of[String]("A"),
       BaseTest.createOptionalAttrDef("b", DataTypes.BOOLEAN_TYPE))
-    val C: TraitTypeDefinition = createTraitTypeDef("C", ImmutableList.of[String]("A"),
+    val C: HierarchicalTypeDefinition[TraitType] = createTraitTypeDef("C", ImmutableList.of[String]("A"),
       BaseTest.createOptionalAttrDef("c", DataTypes.BYTE_TYPE))
-    val D: TraitTypeDefinition = createTraitTypeDef("D", ImmutableList.of[String]("B", "C"),
+    val D: HierarchicalTypeDefinition[TraitType] = createTraitTypeDef("D", ImmutableList.of[String]("B", "C"),
       BaseTest.createOptionalAttrDef("d", DataTypes.SHORT_TYPE))
 
     defineTraits(A, B, C, D)