| /** |
| * 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.atlas.repository.typestore; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.atlas.AtlasException; |
| import org.apache.atlas.typesystem.types.AttributeInfo; |
| import org.apache.atlas.typesystem.types.DataTypes.TypeCategory; |
| import org.apache.atlas.typesystem.types.EnumType; |
| import org.apache.atlas.typesystem.types.HierarchicalType; |
| import org.apache.atlas.typesystem.types.IDataType; |
| import org.apache.atlas.typesystem.types.TypeSystem; |
| |
| /** |
| * TypeVisitor implementation that builds up a list of type vertices |
| * that need to be created for the types that are being stored. |
| * |
| */ |
| public class TypeVertexFinder implements TypeVisitor { |
| |
| private final List<TypeVertexInfo> toCreate = new ArrayList<TypeVertexInfo>(); |
| private final Set<String> typesIncluded = new HashSet<String>(); |
| private final TypeSystem typeSystem; |
| |
| public TypeVertexFinder(TypeSystem ts) { |
| typeSystem = ts; |
| } |
| |
| |
| @Override |
| public void visitEnumeration(EnumType dataType) { |
| visitDataType(dataType); |
| } |
| |
| private void addTypeIfNeeded(TypeVertexInfo info) { |
| if(! typesIncluded.contains(info.getTypeName())) { |
| toCreate.add(info); |
| typesIncluded.add(info.getTypeName()); |
| } |
| } |
| |
| @Override |
| public void visitAttributeDataType(String typeName, AttributeInfo sourceAttr, IDataType attrType) throws AtlasException { |
| visitDataType(attrType); |
| } |
| |
| @Override |
| public void visitSuperType(String typeName, String superTypeName) throws AtlasException { |
| HierarchicalType superType = typeSystem.getDataType(HierarchicalType.class, superTypeName); |
| visitDataType(superType); |
| } |
| |
| @Override |
| public void visitAttributeNames(String typeName, List<String> attrNames) throws AtlasException { |
| //nothing to do |
| |
| } |
| |
| @Override |
| public void visitAttribute(String typeName, AttributeInfo attribute) throws StorageException, AtlasException { |
| //nothing to do |
| } |
| |
| |
| private void visitDataType(IDataType dataType) { |
| TypeVertexInfo info = null; |
| info = new TypeVertexInfo(dataType.getTypeCategory(), dataType.getName(), dataType.getDescription()); |
| addTypeIfNeeded(info); |
| |
| } |
| |
| |
| public List<TypeVertexInfo> getVerticesToCreate() { |
| return toCreate; |
| } |
| |
| @Override |
| public void visitDataType(TypeCategory category, String typeName, String typeDescription) { |
| TypeVertexInfo info = new TypeVertexInfo(category, typeName, typeDescription); |
| addTypeIfNeeded(info); |
| } |
| |
| } |