Examples with ITypedStruct org.apache.atlas.typesystem.ITypedStruct used on opensource projects

Example 16 with ITypedStruct

use of org.apache.atlas.typesystem.ITypedStruct in project incubator-atlas by apache.

the class DefaultGraphPersistenceStrategy method constructInstance.

@Override
public <U> U constructInstance(IDataType<U> dataType, Object value) {
    try {
        switch(dataType.getTypeCategory()) {
            case PRIMITIVE:
            case ENUM:
                return dataType.convert(value, Multiplicity.OPTIONAL);
            case ARRAY:
                DataTypes.ArrayType arrType = (DataTypes.ArrayType) dataType;
                IDataType<?> elemType = arrType.getElemType();
                ImmutableCollection.Builder result = ImmutableList.builder();
                List list = (List) value;
                for (Object listElement : list) {
                    Object collectionEntry = constructCollectionEntry(elemType, listElement);
                    if (collectionEntry != null) {
                        result.add(collectionEntry);
                    }
                }
                return (U) result.build();
            case MAP:
                // todo
                break;
            case STRUCT:
                AtlasVertex structVertex = (AtlasVertex) value;
                StructType structType = (StructType) dataType;
                ITypedStruct structInstance = structType.createInstance();
                TypeSystem.IdType idType = TypeSystem.getInstance().getIdType();
                if (dataType.getName().equals(idType.getName())) {
                    structInstance.set(idType.typeNameAttrName(), GraphHelper.getSingleValuedProperty(structVertex, typeAttributeName(), String.class));
                    structInstance.set(idType.idAttrName(), GraphHelper.getSingleValuedProperty(structVertex, idAttributeName(), String.class));
                    String stateValue = GraphHelper.getSingleValuedProperty(structVertex, stateAttributeName(), String.class);
                    if (stateValue != null) {
                        structInstance.set(idType.stateAttrName(), stateValue);
                    }
                    structInstance.set(idType.versionAttrName(), structVertex.getProperty(versionAttributeName(), Integer.class));
                } else {
                    metadataRepository.getGraphToInstanceMapper().mapVertexToInstance(structVertex, structInstance, structType.fieldMapping().fields);
                }
                return dataType.convert(structInstance, Multiplicity.OPTIONAL);
            case TRAIT:
                AtlasVertex traitVertex = (AtlasVertex) value;
                TraitType traitType = (TraitType) dataType;
                ITypedStruct traitInstance = traitType.createInstance();
                // todo - this is not right, we should load the Instance associated with this
                // trait. for now just loading the trait struct.
                // metadataRepository.getGraphToInstanceMapper().mapVertexToTraitInstance(
                //        traitVertex, dataType.getName(), , traitType, traitInstance);
                metadataRepository.getGraphToInstanceMapper().mapVertexToInstance(traitVertex, traitInstance, traitType.fieldMapping().fields);
                break;
            case CLASS:
                AtlasVertex classVertex = (AtlasVertex) value;
                String guid = classVertex.getProperty(Constants.GUID_PROPERTY_KEY, String.class);
                // Check if the instance we need was previously loaded.
                ITypedReferenceableInstance classInstance = RequestContext.get().getInstanceV1(guid);
                if (classInstance == null) {
                    classInstance = metadataRepository.getGraphToInstanceMapper().mapGraphToTypedInstance(guid, classVertex);
                }
                return dataType.convert(classInstance, Multiplicity.OPTIONAL);
            default:
                throw new UnsupportedOperationException("Load for type " + dataType + "is not supported");
        }
    } catch (AtlasException e) {
        LOG.error("error while constructing an instance", e);
    }
    return null;
}

Example 17 with ITypedStruct

use of org.apache.atlas.typesystem.ITypedStruct in project incubator-atlas by apache.

the class GraphToTypedInstanceMapper method mapVertexToStructInstance.

private ITypedStruct mapVertexToStructInstance(AtlasVertex instanceVertex, StructType structType, String relationshipLabel, AtlasEdge optionalEdge) throws AtlasException {
    if (LOG.isDebugEnabled()) {
        LOG.debug("mapping {} to struct {}", string(instanceVertex), relationshipLabel);
    }
    ITypedStruct structInstance = null;
    AtlasEdge edge;
    if (optionalEdge == null) {
        edge = graphHelper.getEdgeForLabel(instanceVertex, relationshipLabel);
    } else {
        edge = optionalEdge;
    }
    if (GraphHelper.elementExists(edge)) {
        structInstance = structType.createInstance();
        AtlasVertex structInstanceVertex = edge.getInVertex();
        if (LOG.isDebugEnabled()) {
            LOG.debug("Found struct instance {}, mapping to instance {} ", string(structInstanceVertex), structInstance.getTypeName());
        }
        mapVertexToInstance(structInstanceVertex, structInstance, structType.fieldMapping().fields);
    }
    return structInstance;
}

Example 18 with ITypedStruct

use of org.apache.atlas.typesystem.ITypedStruct in project incubator-atlas by apache.

the class DefaultMetadataService method addTrait.

/**
     * Adds a new trait to an existing entity represented by a guid.
     *
     * @param guid                    globally unique identifier for the entity
     * @param traitInstanceDefinition trait instance json that needs to be added to entity
     * @throws AtlasException
     */
@Override
public void addTrait(String guid, String traitInstanceDefinition) throws AtlasException {
    guid = ParamChecker.notEmpty(guid, "entity id");
    traitInstanceDefinition = ParamChecker.notEmpty(traitInstanceDefinition, "trait instance definition");
    ITypedStruct traitInstance = deserializeTraitInstance(traitInstanceDefinition);
    addTrait(guid, traitInstance);
}

Example 19 with ITypedStruct

use of org.apache.atlas.typesystem.ITypedStruct in project incubator-atlas by apache.

the class AtlasDeleteHandlerV1Test method testDisconnectUnidirectionalArrayReferenceFromStructAndTraitTypes.

/**
     * Verify deleting entities that are the target of a unidirectional class array reference
     * from a struct or trait instance.
     */
@Test
public void testDisconnectUnidirectionalArrayReferenceFromStructAndTraitTypes() throws Exception {
    // Define class types.
    AtlasStructDef.AtlasAttributeDef[] structTargetAttributes = new AtlasStructDef.AtlasAttributeDef[] { new AtlasStructDef.AtlasAttributeDef("attr1", "string", true, AtlasStructDef.AtlasAttributeDef.Cardinality.SINGLE, 0, 1, false, false, Collections.<AtlasStructDef.AtlasConstraintDef>emptyList()) };
    AtlasEntityDef structTargetDef = new AtlasEntityDef("StructTarget", "StructTarget_description", "1.0", Arrays.asList(structTargetAttributes), Collections.<String>emptySet());
    AtlasStructDef.AtlasAttributeDef[] traitTargetAttributes = new AtlasStructDef.AtlasAttributeDef[] { new AtlasStructDef.AtlasAttributeDef("attr1", "string", true, AtlasStructDef.AtlasAttributeDef.Cardinality.SINGLE, 0, 1, false, false, Collections.<AtlasStructDef.AtlasConstraintDef>emptyList()) };
    AtlasEntityDef traitTargetDef = new AtlasEntityDef("TraitTarget", "TraitTarget_description", "1.0", Arrays.asList(traitTargetAttributes), Collections.<String>emptySet());
    AtlasStructDef.AtlasAttributeDef[] structContainerAttributes = new AtlasStructDef.AtlasAttributeDef[] { new AtlasStructDef.AtlasAttributeDef("struct", "TestStruct", true, AtlasStructDef.AtlasAttributeDef.Cardinality.SINGLE, 0, 1, false, false, Collections.<AtlasStructDef.AtlasConstraintDef>emptyList()) };
    AtlasEntityDef structContainerDef = new AtlasEntityDef("StructContainer", "StructContainer_description", "1.0", Arrays.asList(structContainerAttributes), Collections.<String>emptySet());
    // Define struct and trait types which have a unidirectional array reference
    // to a class type.
    AtlasStructDef.AtlasAttributeDef[] structDefAttributes = new AtlasStructDef.AtlasAttributeDef[] { new AtlasStructDef.AtlasAttributeDef("target", "array<StructTarget>", true, AtlasStructDef.AtlasAttributeDef.Cardinality.SINGLE, 0, 1, false, false, Collections.<AtlasStructDef.AtlasConstraintDef>emptyList()), new AtlasStructDef.AtlasAttributeDef("nestedStructs", "array<NestedStruct>", true, AtlasStructDef.AtlasAttributeDef.Cardinality.SINGLE, 0, 1, false, false, Collections.<AtlasStructDef.AtlasConstraintDef>emptyList()) };
    AtlasStructDef structDef = new AtlasStructDef("TestStruct", "TestStruct_desc", "1.0", Arrays.asList(structDefAttributes));
    // Define struct and trait types which have a unidirectional array reference
    // to a class type.
    AtlasStructDef.AtlasAttributeDef[] nestedStructDefAttributes = new AtlasStructDef.AtlasAttributeDef[] { new AtlasStructDef.AtlasAttributeDef("attr1", "string", true, AtlasStructDef.AtlasAttributeDef.Cardinality.SINGLE, 0, 1, false, false, Collections.<AtlasStructDef.AtlasConstraintDef>emptyList()), new AtlasStructDef.AtlasAttributeDef("target", "array<TraitTarget>", true, AtlasStructDef.AtlasAttributeDef.Cardinality.SINGLE, 0, 1, false, false, Collections.<AtlasStructDef.AtlasConstraintDef>emptyList()) };
    AtlasStructDef nestedStructDef = new AtlasStructDef("NestedStruct", "NestedStruct_desc", "1.0", Arrays.asList(nestedStructDefAttributes));
    AtlasStructDef.AtlasAttributeDef[] traitDefAttributes = new AtlasStructDef.AtlasAttributeDef[] { new AtlasStructDef.AtlasAttributeDef("target", "array<TraitTarget>", true, AtlasStructDef.AtlasAttributeDef.Cardinality.SINGLE, 0, 1, false, false, Collections.<AtlasStructDef.AtlasConstraintDef>emptyList()) };
    AtlasClassificationDef traitDef = new AtlasClassificationDef("TestTrait", "TestTrait_desc", "1.0", Arrays.asList(traitDefAttributes));
    AtlasTypesDef typesDef = AtlasTypeUtil.getTypesDef(ImmutableList.<AtlasEnumDef>of(), ImmutableList.<AtlasStructDef>of(structDef, nestedStructDef), ImmutableList.<AtlasClassificationDef>of(traitDef), ImmutableList.<AtlasEntityDef>of(structTargetDef, traitTargetDef, structContainerDef));
    typeDefStore.createTypesDef(typesDef);
    // Create instances of class, struct, and trait types.
    final AtlasEntity structTargetEntity = new AtlasEntity("StructTarget");
    final AtlasEntity traitTargetEntity = new AtlasEntity("TraitTarget");
    final AtlasEntity structContainerEntity = new AtlasEntity("StructContainer");
    AtlasStruct structInstance = new AtlasStruct("TestStruct");
    AtlasStruct nestedStructInstance = new AtlasStruct("NestedStruct");
    Struct traitInstance = new Struct("TestTrait");
    structContainerEntity.setAttribute("struct", structInstance);
    structInstance.setAttribute("target", ImmutableList.of(AtlasTypeUtil.getAtlasObjectId(structTargetEntity)));
    structInstance.setAttribute("nestedStructs", ImmutableList.of(nestedStructInstance));
    AtlasEntity.AtlasEntitiesWithExtInfo structCreationObj = new AtlasEntity.AtlasEntitiesWithExtInfo();
    structCreationObj.addEntity(structContainerEntity);
    structCreationObj.addEntity(traitTargetEntity);
    structCreationObj.addReferredEntity(structTargetEntity);
    init();
    AtlasEntityStream entityStream = new AtlasEntityStream(structCreationObj);
    EntityMutationResponse response = entityStore.createOrUpdate(entityStream, false);
    Assert.assertEquals(response.getCreatedEntities().size(), 3);
    final List<String> structTarget = metadataService.getEntityList("StructTarget");
    Assert.assertEquals(structTarget.size(), 1);
    final String structTargetGuid = structTarget.get(0);
    final List<String> traitTarget = metadataService.getEntityList("TraitTarget");
    Assert.assertEquals(traitTarget.size(), 1);
    final String traitTargetGuid = traitTarget.get(0);
    final List<String> structContainerTarget = metadataService.getEntityList("StructContainer");
    Assert.assertEquals(structContainerTarget.size(), 1);
    String structContainerGuid = structContainerTarget.get(0);
    // Add TestTrait to StructContainer instance
    traitInstance.set("target", ImmutableList.of(new Id(traitTargetGuid, 0, "TraitTarget")));
    TraitType traitType = typeSystem.getDataType(TraitType.class, "TestTrait");
    ITypedStruct convertedTrait = traitType.convert(traitInstance, Multiplicity.REQUIRED);
    metadataService.addTrait(structContainerGuid, convertedTrait);
    // Verify that the unidirectional references from the struct and trait instances
    // are pointing at the target entities.
    final ITypedReferenceableInstance structContainerConvertedEntity = metadataService.getEntityDefinition(structContainerGuid);
    Object object = structContainerConvertedEntity.get("struct");
    Assert.assertNotNull(object);
    Assert.assertTrue(object instanceof ITypedStruct);
    ITypedStruct struct = (ITypedStruct) object;
    object = struct.get("target");
    Assert.assertNotNull(object);
    Assert.assertTrue(object instanceof List);
    List<ITypedReferenceableInstance> refList = (List<ITypedReferenceableInstance>) object;
    Assert.assertEquals(refList.size(), 1);
    Assert.assertEquals(refList.get(0).getId()._getId(), structTargetGuid);
    IStruct trait = structContainerConvertedEntity.getTrait("TestTrait");
    Assert.assertNotNull(trait);
    object = trait.get("target");
    Assert.assertNotNull(object);
    Assert.assertTrue(object instanceof List);
    refList = (List<ITypedReferenceableInstance>) object;
    Assert.assertEquals(refList.size(), 1);
    Assert.assertEquals(refList.get(0).getId()._getId(), traitTargetGuid);
    init();
    // Delete the entities that are targets of the struct and trait instances.
    EntityMutationResponse entityResult = entityStore.deleteByIds(new ArrayList<String>() {

        {
            add(structTargetGuid);
            add(traitTargetGuid);
        }
    });
    Assert.assertEquals(entityResult.getDeletedEntities().size(), 2);
    Assert.assertTrue(extractGuids(entityResult.getDeletedEntities()).containsAll(Arrays.asList(structTargetGuid, traitTargetGuid)));
    assertEntityDeleted(structTargetGuid);
    assertEntityDeleted(traitTargetGuid);
    assertTestDisconnectUnidirectionalArrayReferenceFromStructAndTraitTypes(structContainerGuid);
    init();
    // Delete the entity which contains nested structs and has the TestTrait trait.
    entityResult = entityStore.deleteById(structContainerGuid);
    Assert.assertEquals(entityResult.getDeletedEntities().size(), 1);
    Assert.assertTrue(extractGuids(entityResult.getDeletedEntities()).contains(structContainerGuid));
    assertEntityDeleted(structContainerGuid);
    // Verify all TestStruct struct vertices were removed.
    assertVerticesDeleted(getVertices(Constants.ENTITY_TYPE_PROPERTY_KEY, "TestStruct"));
    // Verify all NestedStruct struct vertices were removed.
    assertVerticesDeleted(getVertices(Constants.ENTITY_TYPE_PROPERTY_KEY, "NestedStruct"));
    // Verify all TestTrait trait vertices were removed.
    assertVerticesDeleted(getVertices(Constants.ENTITY_TYPE_PROPERTY_KEY, "TestTrait"));
}

Example 20 with ITypedStruct

use of org.apache.atlas.typesystem.ITypedStruct in project incubator-atlas by apache.

the class AtlasInstanceConverter method getTrait.

public ITypedStruct getTrait(AtlasClassification classification) throws AtlasBaseException {
    AtlasFormatConverter converter = instanceFormatters.getConverter(TypeCategory.CLASSIFICATION);
    AtlasType classificationType = typeRegistry.getType(classification.getTypeName());
    Struct trait = (Struct) converter.fromV2ToV1(classification, classificationType, new ConverterContext());
    try {
        return metadataService.createTraitInstance(trait);
    } catch (AtlasException e) {
        LOG.error("Exception while getting a typed reference for the entity ", e);
        throw toAtlasBaseException(e);
    }
}