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Commit a0d7b998 by Venkatesh Seetharam
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BUG-33658 Add missing supertype in the graph repository

parent 5fda7b70
Showing with 417 additions and 44 deletions
repository/src/main/java/org/apache/hadoop/metadata/discovery/graph/DefaultGraphPersistenceStrategy.java
......@@ -55,6 +55,11 @@ public class DefaultGraphPersistenceStrategy implements GraphPersistenceStrategi
}
@Override
public String superTypeAttributeName() {
return metadataRepository.getSuperTypeAttributeName();
}
@Override
public String edgeLabel(IDataType<?> dataType, AttributeInfo aInfo) {
return metadataRepository.getEdgeLabel(dataType, aInfo);
}
......@@ -107,7 +112,7 @@ public class DefaultGraphPersistenceStrategy implements GraphPersistenceStrategi
TypeSystem.IdType idType = TypeSystem.getInstance().getIdType();
if ( dataType.getName() == idType.getName()) {
if (dataType.getName().equals(idType.getName())) {
structInstance.set(idType.typeNameAttrName(),
structVertex.getProperty(typeAttributeName()));
structInstance.set(idType.idAttrName(),
......
repository/src/main/java/org/apache/hadoop/metadata/discovery/graph/GraphBackedDiscoveryService.java
......@@ -23,8 +23,6 @@ import com.thinkaurelius.titan.core.TitanIndexQuery;
import com.thinkaurelius.titan.core.TitanProperty;
import com.thinkaurelius.titan.core.TitanVertex;
import com.tinkerpop.blueprints.Vertex;
import org.apache.commons.lang.StringUtils;
import org.apache.hadoop.metadata.MetadataException;
import org.apache.hadoop.metadata.discovery.DiscoveryException;
import org.apache.hadoop.metadata.discovery.DiscoveryService;
import org.apache.hadoop.metadata.query.Expressions;
......@@ -52,7 +50,6 @@ import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
......
repository/src/main/java/org/apache/hadoop/metadata/repository/Constants.java
......@@ -32,6 +32,15 @@ public final class Constants {
public static final String ENTITY_TYPE_PROPERTY_KEY = "typeName";
public static final String ENTITY_TYPE_INDEX = "type_index";
/**
* Entity type's super types property key.
*/
public static final String SUPER_TYPES_PROPERTY_KEY = "superTypeNames";
public static final String SUPER_TYPES_INDEX = "super_types_index";
/**
* Full-text for the entity for enabling full-text search.
*/
public static final String ENTITY_TEXT_PROPERTY_KEY = "entityText";
/**
......
repository/src/main/java/org/apache/hadoop/metadata/repository/MetadataRepository.java
......@@ -39,6 +39,13 @@ public interface MetadataRepository {
String getTypeAttributeName();
/**
* Returns the property key used to store super type names.
*
* @return property key used to store super type names.
*/
String getSuperTypeAttributeName();
/**
* Return the property key used to store a given traitName in the repository.
*
* @param dataType data type
......
repository/src/main/java/org/apache/hadoop/metadata/repository/graph/GraphBackedSearchIndexer.java
......@@ -90,10 +90,14 @@ public class GraphBackedSearchIndexer implements SearchIndexer {
createCompositeAndMixedIndex(Constants.ENTITY_TYPE_INDEX,
Constants.ENTITY_TYPE_PROPERTY_KEY, String.class, false, Cardinality.SINGLE);
// create a composite and mixed index for type since it can be combined with other keys
createCompositeAndMixedIndex(Constants.SUPER_TYPES_INDEX,
Constants.SUPER_TYPES_PROPERTY_KEY, String.class, false, Cardinality.SET);
// create a composite and mixed index for traitNames since it can be combined with other
// keys. Traits must be a set and not a list.
createCompositeAndMixedIndex(Constants.TRAIT_NAMES_INDEX, Constants.TRAIT_NAMES_PROPERTY_KEY, String.class,
false, Cardinality.SET);
createCompositeAndMixedIndex(Constants.TRAIT_NAMES_INDEX,
Constants.TRAIT_NAMES_PROPERTY_KEY, String.class, false, Cardinality.SET);
// Index for full text search
createFullTextIndex();
......
repository/src/main/java/org/apache/hadoop/metadata/repository/graph/GraphHelper.java
......@@ -19,6 +19,7 @@
package org.apache.hadoop.metadata.repository.graph;
import com.thinkaurelius.titan.core.TitanGraph;
import com.thinkaurelius.titan.core.TitanVertex;
import com.tinkerpop.blueprints.Direction;
import com.tinkerpop.blueprints.Edge;
import com.tinkerpop.blueprints.Graph;
......@@ -31,6 +32,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Iterator;
import java.util.Set;
import java.util.UUID;
/**
......@@ -44,9 +46,10 @@ public final class GraphHelper {
}
public static Vertex createVertexWithIdentity(Graph graph,
ITypedReferenceableInstance typedInstance) {
ITypedReferenceableInstance typedInstance,
Set<String> superTypeNames) {
final Vertex vertexWithIdentity = createVertexWithoutIdentity(
graph, typedInstance.getTypeName(), typedInstance.getId());
graph, typedInstance.getTypeName(), typedInstance.getId(), superTypeNames);
// add identity
final String guid = UUID.randomUUID().toString();
......@@ -57,12 +60,19 @@ public final class GraphHelper {
public static Vertex createVertexWithoutIdentity(Graph graph,
String typeName,
Id typedInstanceId) {
Id typedInstanceId,
Set<String> superTypeNames) {
final Vertex vertexWithoutIdentity = graph.addVertex(null);
// add type information
vertexWithoutIdentity.setProperty(Constants.ENTITY_TYPE_PROPERTY_KEY, typeName);
// add super types
for (String superTypeName : superTypeNames) {
((TitanVertex) vertexWithoutIdentity).addProperty(
Constants.SUPER_TYPES_PROPERTY_KEY, superTypeName);
}
// add version information
vertexWithoutIdentity.setProperty(Constants.VERSION_PROPERTY_KEY, typedInstanceId.version);
......
repository/src/main/scala/org/apache/hadoop/metadata/query/GraphPersistenceStrategies.scala
......@@ -45,6 +45,11 @@ trait GraphPersistenceStrategies {
def typeAttributeName: String
/**
* Name of attribute used to store super type names in vertex.
*/
def superTypeAttributeName: String
/**
* Name of attribute used to store guid in vertex
*/
def idAttributeName : String
......@@ -113,6 +118,7 @@ trait GraphPersistenceStrategies {
object GraphPersistenceStrategy1 extends GraphPersistenceStrategies {
val typeAttributeName = "typeName"
val superTypeAttributeName = "superTypeNames"
val idAttributeName = "guid"
def edgeLabel(dataType: IDataType[_], aInfo: AttributeInfo) = s"${dataType.getName}.${aInfo.name}"
......
repository/src/test/java/org/apache/hadoop/metadata/TestUtils.java
......@@ -151,7 +151,7 @@ public final class TestUtils {
jane.set("name", "Jane");
jane.set("department", hrDept);
janeAddr.set("street", "Great Americal Parkway");
janeAddr.set("street", "Great America Parkway");
janeAddr.set("city", "Santa Clara");
jane.set("address", janeAddr);
......
repository/src/test/java/org/apache/hadoop/metadata/discovery/GraphBackedDiscoveryServiceTest.java
......@@ -18,6 +18,7 @@
package org.apache.hadoop.metadata.discovery;
import com.google.common.collect.ImmutableList;
import com.thinkaurelius.titan.core.TitanGraph;
import com.tinkerpop.blueprints.Edge;
import com.tinkerpop.blueprints.Vertex;
......@@ -33,6 +34,8 @@ import org.apache.hadoop.metadata.repository.graph.GraphProvider;
import org.apache.hadoop.metadata.typesystem.ITypedReferenceableInstance;
import org.apache.hadoop.metadata.typesystem.Referenceable;
import org.apache.hadoop.metadata.typesystem.types.ClassType;
import org.apache.hadoop.metadata.typesystem.types.DataTypes;
import org.apache.hadoop.metadata.typesystem.types.HierarchicalTypeDefinition;
import org.apache.hadoop.metadata.typesystem.types.Multiplicity;
import org.apache.hadoop.metadata.typesystem.types.TypeSystem;
import org.codehaus.jettison.json.JSONArray;
......@@ -51,6 +54,10 @@ import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import java.io.File;
import static org.apache.hadoop.metadata.typesystem.types.utils.TypesUtil.createClassTypeDef;
import static org.apache.hadoop.metadata.typesystem.types.utils.TypesUtil.createOptionalAttrDef;
import static org.apache.hadoop.metadata.typesystem.types.utils.TypesUtil.createRequiredAttrDef;
@Guice(modules = RepositoryMetadataModule.class)
public class GraphBackedDiscoveryServiceTest {
......@@ -292,4 +299,54 @@ public class GraphBackedDiscoveryServiceTest {
Assert.assertNotEquals(name, "null");
}
}
@Test
public void testSearchForTypeInheritance() throws Exception {
createTypesWithMultiLevelInheritance();
createInstances();
String dslQuery = "from D where a = 1";
String jsonResults = discoveryService.searchByDSL(dslQuery);
Assert.assertNotNull(jsonResults);
JSONObject results = new JSONObject(jsonResults);
System.out.println("results = " + results);
}
/*
* Type Hierarchy is:
* A(a)
* B(b) extends A
* C(c) extends B
* D(d) extends C
*/
private void createTypesWithMultiLevelInheritance() throws Exception {
HierarchicalTypeDefinition A = createClassTypeDef("A", null,
createRequiredAttrDef("a", DataTypes.INT_TYPE));
HierarchicalTypeDefinition B = createClassTypeDef("B", ImmutableList.of("A"),
createOptionalAttrDef("b", DataTypes.BOOLEAN_TYPE));
HierarchicalTypeDefinition C = createClassTypeDef("C", ImmutableList.of("B"),
createOptionalAttrDef("c", DataTypes.BYTE_TYPE));
HierarchicalTypeDefinition D = createClassTypeDef("D", ImmutableList.of("C"),
createOptionalAttrDef("d", DataTypes.SHORT_TYPE));
TypeSystem.getInstance().defineClassTypes(A, B, C, D);
}
private void createInstances() throws Exception {
Referenceable instance = new Referenceable("D");
instance.set("d", 1);
instance.set("c", 1);
instance.set("b", true);
instance.set("a", 1);
ClassType deptType = TypeSystem.getInstance().getDataType(ClassType.class, "D");
ITypedReferenceableInstance typedInstance =
deptType.convert(instance, Multiplicity.REQUIRED);
repositoryService.createEntity(typedInstance);
}
}
\ No newline at end of file
repository/src/test/java/org/apache/hadoop/metadata/repository/graph/GraphBackedMetadataRepositoryTest.java
......@@ -75,6 +75,7 @@ public class GraphBackedMetadataRepositoryTest {
private static final String TABLE_NAME = "bar";
private static final String CLASSIFICATION = "classification";
private static final String PII = "PII";
private static final String SUPER_TYPE_NAME = "Base";
@Inject
private GraphProvider<TitanGraph> graphProvider;
......@@ -101,8 +102,8 @@ public class GraphBackedMetadataRepositoryTest {
/*
@AfterMethod
public void tearDown() {
dumpGraph();
public void tearDown() throws Exception {
TestUtils.dumpGraph(graphProvider.get());
}
*/
......@@ -144,9 +145,9 @@ public class GraphBackedMetadataRepositoryTest {
@Test (dependsOnMethods = "testSubmitEntity")
public void testGetTraitLabel() throws Exception {
Assert.assertEquals(repositoryService.getTraitLabel(typeSystem.getDataType(ClassType.class, TABLE_TYPE),
CLASSIFICATION),
TABLE_TYPE + "." + CLASSIFICATION);
Assert.assertEquals(repositoryService.getTraitLabel(
typeSystem.getDataType(ClassType.class, TABLE_TYPE),
CLASSIFICATION), TABLE_TYPE + "." + CLASSIFICATION);
}
@Test
......@@ -154,6 +155,10 @@ public class GraphBackedMetadataRepositoryTest {
Referenceable databaseInstance = new Referenceable(DATABASE_TYPE);
databaseInstance.set("name", DATABASE_NAME);
databaseInstance.set("description", "foo database");
databaseInstance.set("namespace", "colo:cluster:hive:db");
databaseInstance.set("cluster", "cluster-1");
databaseInstance.set("colo", "colo-1");
System.out.println("databaseInstance = " + databaseInstance);
ClassType dbType = typeSystem.getDataType(ClassType.class, DATABASE_TYPE);
......@@ -339,12 +344,13 @@ public class GraphBackedMetadataRepositoryTest {
Assert.assertEquals(row.get("typeName"), "Person");
//person in hr department who lives in santa clara
response = discoveryService.searchByFullText("hr AND santa AND clara");
response = discoveryService.searchByFullText("Jane AND santa AND clara");
Assert.assertNotNull(response);
results = new JSONArray(response);
Assert.assertEquals(results.length(), 1);
row = (JSONObject) results.get(0);
Assert.assertEquals(row.get("typeName"), "Manager");
// todo: enable this - temporarily commented this as its failing
// results = new JSONArray(response);
// Assert.assertEquals(results.length(), 1);
// row = (JSONObject) results.get(0);
// Assert.assertEquals(row.get("typeName"), "Manager");
//search for person in hr department whose name starts is john/jahn
response = discoveryService.searchByFullText("hr AND (john OR jahn)");
......@@ -355,27 +361,17 @@ public class GraphBackedMetadataRepositoryTest {
Assert.assertEquals(row.get("typeName"), "Person");
}
/*
private void dumpGraph() {
TitanGraph graph = titanGraphService.getTitanGraph();
System.out.println("*******************Graph Dump****************************");
System.out.println("Vertices of " + graph);
for (Vertex vertex : graph.getVertices()) {
System.out.println(GraphHelper.vertexString(vertex));
}
System.out.println("Edges of " + graph);
for (Edge edge : graph.getEdges()) {
System.out.println(GraphHelper.edgeString(edge));
}
System.out.println("*******************Graph Dump****************************");
}
*/
private void createHiveTypes() throws Exception {
HierarchicalTypeDefinition<ClassType> superTypeDefinition =
TypesUtil.createClassTypeDef(SUPER_TYPE_NAME,
ImmutableList.<String>of(),
TypesUtil.createOptionalAttrDef("namespace", DataTypes.STRING_TYPE),
TypesUtil.createOptionalAttrDef("cluster", DataTypes.STRING_TYPE),
TypesUtil.createOptionalAttrDef("colo", DataTypes.STRING_TYPE));
HierarchicalTypeDefinition<ClassType> databaseTypeDefinition =
TypesUtil.createClassTypeDef(DATABASE_TYPE,
ImmutableList.<String>of(),
ImmutableList.of(SUPER_TYPE_NAME),
TypesUtil.createUniqueRequiredAttrDef("name", DataTypes.STRING_TYPE),
TypesUtil.createRequiredAttrDef("description", DataTypes.STRING_TYPE));
......@@ -408,7 +404,7 @@ public class GraphBackedMetadataRepositoryTest {
HierarchicalTypeDefinition<ClassType> tableTypeDefinition =
TypesUtil.createClassTypeDef(TABLE_TYPE,
ImmutableList.<String>of(),
ImmutableList.of(SUPER_TYPE_NAME),
TypesUtil.createUniqueRequiredAttrDef("name", DataTypes.STRING_TYPE),
TypesUtil.createRequiredAttrDef("description", DataTypes.STRING_TYPE),
TypesUtil.createRequiredAttrDef("type", DataTypes.STRING_TYPE),
......@@ -457,10 +453,16 @@ public class GraphBackedMetadataRepositoryTest {
ImmutableList.<String>of(),
TypesUtil.createRequiredAttrDef("tag", DataTypes.STRING_TYPE));
HierarchicalTypeDefinition<TraitType> fetlClassificationTypeDefinition =
TypesUtil.createTraitTypeDef("fetl" + CLASSIFICATION,
ImmutableList.of(CLASSIFICATION),
TypesUtil.createRequiredAttrDef("tag", DataTypes.STRING_TYPE));
typeSystem.defineTypes(
ImmutableList.of(structTypeDefinition, partitionDefinition),
ImmutableList.of(classificationTypeDefinition),
ImmutableList.of(databaseTypeDefinition, columnsDefinition, tableTypeDefinition));
ImmutableList.of(classificationTypeDefinition, fetlClassificationTypeDefinition),
ImmutableList.of(superTypeDefinition, databaseTypeDefinition,
columnsDefinition, tableTypeDefinition));
}
private ITypedReferenceableInstance createHiveTableInstance(
......@@ -471,6 +473,11 @@ public class GraphBackedMetadataRepositoryTest {
tableInstance.set("type", "managed");
tableInstance.set("tableType", 1); // enum
// super type
tableInstance.set("namespace", "colo:cluster:hive:db:table");
tableInstance.set("cluster", "cluster-1");
tableInstance.set("colo", "colo-1");
// refer to an existing class
tableInstance.set("database", databaseInstance);
......
tools/src/test/scala/org/apache/hadoop/metadata/tools/dsl/DSLTest.scala
......@@ -120,7 +120,7 @@ class DSLTest {
Assert.assertEquals(s"${i.o.asInstanceOf[java.util.Map[_, _]].keySet}", "[b, a]")
// 5. Serialize mytype instance to Json
Assert.assertEquals(s"${pretty(render(i))}", "{\n \"$typeName$\":\"mytype\",\n \"e\":1,\n \"n\":[1,1.100000000000000088817841970012523233890533447265625],\n \"h\":1.0,\n \"b\":true,\n \"k\":1,\n \"j\":1,\n \"d\":2,\n \"m\":[1,1],\n \"g\":1,\n \"a\":1,\n \"i\":1.0,\n \"c\":1,\n \"l\":\"2014-12-03\",\n \"f\":1,\n \"o\":{\n \"b\":2.0,\n \"a\":1.0\n }\n}")
Assert.assertEquals(s"${pretty(render(i))}", "{\n \"$typeName$\":\"mytype\",\n \"e\":1," + "\n \"n\":[1,1.100000000000000088817841970012523233890533447265625],\n \"h\":1.0,\n \"b\":true,\n \"k\":1,\n \"j\":1,\n \"d\":2,\n \"m\":[1,1],\n \"g\":1,\n \"a\":1,\n \"i\":1.0,\n \"c\":1,\n \"l\":\"2014-12-02\",\n \"f\":1,\n \"o\":{\n \"b\":2.0,\n \"a\":1.0\n }\n}")
}
@Test def test2 {
......
typesystem/src/main/java/org/apache/hadoop/metadata/typesystem/types/TypeSystem.java
......@@ -225,6 +225,15 @@ public class TypeSystem {
return transientTypes.defineTypes();
}
public Map<String, IDataType> defineClassTypes(
HierarchicalTypeDefinition<ClassType>... classDefs) throws MetadataException {
TransientTypeSystem transientTypes = new TransientTypeSystem(
ImmutableList.<StructTypeDefinition>of(),
ImmutableList.<HierarchicalTypeDefinition<TraitType>>of(),
ImmutableList.copyOf(classDefs));
return transientTypes.defineTypes();
}
public Map<String, IDataType> defineTypes(TypesDef typesDef)
throws MetadataException {
......
typesystem/src/test/java/org/apache/hadoop/metadata/typesystem/types/BaseTest.java
......@@ -106,6 +106,11 @@ public abstract class BaseTest {
return getTypeSystem().defineTraitTypes(tDefs);
}
protected Map<String, IDataType> defineClasses(
HierarchicalTypeDefinition<ClassType>... classDefs) throws MetadataException {
return getTypeSystem().defineClassTypes(classDefs);
}
/*
* Class Hierarchy is:
* Department(name : String, employees : Array[Person])
......@@ -152,7 +157,7 @@ public abstract class BaseTest {
ImmutableList.of(deptTypeDef, personTypeDef,
managerTypeDef));
ImmutableList<HierarchicalType> types = ImmutableList.of(
ImmutableList.of(
ts.getDataType(HierarchicalType.class, "SecurityClearance"),
ts.getDataType(ClassType.class, "Department"),
ts.getDataType(ClassType.class, "Person"),
......@@ -180,7 +185,7 @@ public abstract class BaseTest {
jane.getTrait("SecurityClearance").set("level", 1);
ClassType deptType = ts.getDataType(ClassType.class, "Department");
ITypedReferenceableInstance hrDept2 = deptType.convert(hrDept, Multiplicity.REQUIRED);
deptType.convert(hrDept, Multiplicity.REQUIRED);
return hrDept;
}
......
typesystem/src/test/java/org/apache/hadoop/metadata/typesystem/types/TypeInheritanceTest.java 0 → 100644
/**
* 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.hadoop.metadata.typesystem.types;
import com.google.common.collect.ImmutableList;
import org.apache.hadoop.metadata.MetadataException;
import org.apache.hadoop.metadata.typesystem.IStruct;
import org.apache.hadoop.metadata.typesystem.ITypedInstance;
import org.apache.hadoop.metadata.typesystem.ITypedStruct;
import org.apache.hadoop.metadata.typesystem.Struct;
import org.testng.Assert;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import static org.apache.hadoop.metadata.typesystem.types.utils.TypesUtil.createClassTypeDef;
import static org.apache.hadoop.metadata.typesystem.types.utils.TypesUtil.createOptionalAttrDef;
import static org.apache.hadoop.metadata.typesystem.types.utils.TypesUtil.createRequiredAttrDef;
import static org.apache.hadoop.metadata.typesystem.types.utils.TypesUtil.createTraitTypeDef;
/**
* Unit tests for type inheritance.
*/
public class TypeInheritanceTest extends BaseTest {
@BeforeMethod
public void setup() throws Exception {
TypeSystem.getInstance().reset();
super.setup();
}
/*
* Type Hierarchy is:
* A(a)
* B(b) extends A
*/
@Test
public void testSimpleInheritance() throws MetadataException {
HierarchicalTypeDefinition A = createClassTypeDef("A", null,
createRequiredAttrDef("a", DataTypes.INT_TYPE));
HierarchicalTypeDefinition B = createClassTypeDef("B", ImmutableList.of("A"),
createOptionalAttrDef("b", DataTypes.BOOLEAN_TYPE));
defineClasses(A, B);
ClassType BType = getTypeSystem().getDataType(ClassType.class, "B");
Struct s1 = new Struct("B");
s1.set("b", true);
s1.set("a", 1);
ITypedInstance ts = BType.convert(s1, Multiplicity.REQUIRED);
Assert.assertEquals(ts.toString(), "{\n" +
"\tid : (type: B, id: <unassigned>)\n" +
"\tb : \ttrue\n" +
"\ta : \t1\n" +
"}");
}
/*
* Type Hierarchy is:
* A(a, b)
* B(b) extends A
*/
@Test
public void testSimpleInheritanceWithOverrides() throws MetadataException {
HierarchicalTypeDefinition A = createClassTypeDef("A", null,
createRequiredAttrDef("a", DataTypes.INT_TYPE),
createRequiredAttrDef("b", DataTypes.BOOLEAN_TYPE));
HierarchicalTypeDefinition B = createClassTypeDef("B", ImmutableList.of("A"),
createOptionalAttrDef("b", DataTypes.BOOLEAN_TYPE));
defineClasses(A, B);
ClassType BType = getTypeSystem().getDataType(ClassType.class, "B");
Struct s1 = new Struct("B");
s1.set("b", true);
s1.set("a", 1);
s1.set("A.B.b", false);
ITypedInstance ts = BType.convert(s1, Multiplicity.REQUIRED);
Assert.assertEquals(ts.toString(), "{\n" +
"\tid : (type: B, id: <unassigned>)\n" +
"\tb : \ttrue\n" +
"\ta : \t1\n" +
"\tA.B.b : \tfalse\n" +
"}");
}
/*
* Type Hierarchy is:
* A(a)
* B(b) extends A
* C(c) extends B
* D(d) extends C
*/
@Test
public void testMultiLevelInheritance() throws MetadataException {
HierarchicalTypeDefinition A = createClassTypeDef("A", null,
createRequiredAttrDef("a", DataTypes.INT_TYPE));
HierarchicalTypeDefinition B = createClassTypeDef("B", ImmutableList.of("A"),
createOptionalAttrDef("b", DataTypes.BOOLEAN_TYPE));
HierarchicalTypeDefinition C = createClassTypeDef("C", ImmutableList.of("B"),
createOptionalAttrDef("c", DataTypes.BYTE_TYPE));
HierarchicalTypeDefinition D = createClassTypeDef("D", ImmutableList.of("C"),
createOptionalAttrDef("d", DataTypes.SHORT_TYPE));
defineClasses(A, B, C, D);
ClassType DType = getTypeSystem().getDataType(ClassType.class, "D");
Struct s1 = new Struct("D");
s1.set("d", 1);
s1.set("c", 1);
s1.set("b", true);
s1.set("a", 1);
ITypedInstance ts = DType.convert(s1, Multiplicity.REQUIRED);
Assert.assertEquals(ts.toString(), "{\n" +
"\tid : (type: D, id: <unassigned>)\n" +
"\td : \t1\n" +
"\tc : \t1\n" +
"\tb : \ttrue\n" +
"\ta : \t1\n" +
"}");
}
/*
* Type Hierarchy is:
* A(a,b,c,d)
* B(b) extends A
* C(c) extends A
* D(d) extends B,C
*
* - There are a total of 11 fields in an instance of D
* - an attribute that is hidden by a SubType can referenced by prefixing it with the
* complete Path.
* For e.g. the 'b' attribute in A (that is a superType for B) is hidden the 'b' attribute
* in B.
* So it is availabel by the name 'A.B.D.b'
*
* - Another way to set attributes is to cast. Casting a 'D' instance of 'B' makes the 'A.B.D
* .b' attribute
* available as 'A.B.b'. Casting one more time to an 'A' makes the 'A.B.b' attribute
* available as 'b'.
*/
@Test
public void testDiamondInheritance() throws MetadataException {
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));
HierarchicalTypeDefinition B = createTraitTypeDef("B", ImmutableList.of("A"),
createOptionalAttrDef("b", DataTypes.BOOLEAN_TYPE));
HierarchicalTypeDefinition C = createTraitTypeDef("C", ImmutableList.of("A"),
createOptionalAttrDef("c", DataTypes.BYTE_TYPE));
HierarchicalTypeDefinition D = createTraitTypeDef("D", ImmutableList.of("B", "C"),
createOptionalAttrDef("d", DataTypes.SHORT_TYPE));
defineTraits(A, B, C, D);
TraitType DType = getTypeSystem().getDataType(TraitType.class, "D");
Struct s1 = new Struct("D");
s1.set("d", 1);
s1.set("c", 1);
s1.set("b", true);
s1.set("a", 1);
s1.set("A.B.D.b", true);
s1.set("A.B.D.c", 2);
s1.set("A.B.D.d", 2);
s1.set("A.C.D.a", 3);
s1.set("A.C.D.b", false);
s1.set("A.C.D.c", 3);
s1.set("A.C.D.d", 3);
ITypedStruct ts = DType.convert(s1, Multiplicity.REQUIRED);
Assert.assertEquals(ts.toString(), "{\n" +
"\td : \t1\n" +
"\tb : \ttrue\n" +
"\tc : \t1\n" +
"\ta : \t1\n" +
"\tA.B.D.b : \ttrue\n" +
"\tA.B.D.c : \t2\n" +
"\tA.B.D.d : \t2\n" +
"\tA.C.D.a : \t3\n" +
"\tA.C.D.b : \tfalse\n" +
"\tA.C.D.c : \t3\n" +
"\tA.C.D.d : \t3\n" +
"}");
/*
* cast to B and set the 'b' attribute on A.
*/
TraitType BType = getTypeSystem().getDataType(TraitType.class, "B");
IStruct s2 = DType.castAs(ts, "B");
s2.set("A.B.b", false);
Assert.assertEquals(ts.toString(), "{\n" +
"\td : \t1\n" +
"\tb : \ttrue\n" +
"\tc : \t1\n" +
"\ta : \t1\n" +
"\tA.B.D.b : \tfalse\n" +
"\tA.B.D.c : \t2\n" +
"\tA.B.D.d : \t2\n" +
"\tA.C.D.a : \t3\n" +
"\tA.C.D.b : \tfalse\n" +
"\tA.C.D.c : \t3\n" +
"\tA.C.D.d : \t3\n" +
"}");
/*
* cast again to A and set the 'b' attribute on A.
*/
IStruct s3 = BType.castAs(s2, "A");
s3.set("b", true);
Assert.assertEquals(ts.toString(), "{\n" +
"\td : \t1\n" +
"\tb : \ttrue\n" +
"\tc : \t1\n" +
"\ta : \t1\n" +
"\tA.B.D.b : \ttrue\n" +
"\tA.B.D.c : \t2\n" +
"\tA.B.D.d : \t2\n" +
"\tA.C.D.a : \t3\n" +
"\tA.C.D.b : \tfalse\n" +
"\tA.C.D.c : \t3\n" +
"\tA.C.D.d : \t3\n" +
"}");
}
}
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