| /** |
| * 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.typesystem.types; |
| |
| import com.google.common.collect.ImmutableSet; |
| |
| import org.apache.atlas.AtlasException; |
| import org.apache.atlas.typesystem.IStruct; |
| import org.apache.atlas.typesystem.ITypedStruct; |
| |
| import java.nio.charset.Charset; |
| import java.security.MessageDigest; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class TraitType extends HierarchicalType<TraitType, IStruct> |
| implements IConstructableType<IStruct, ITypedStruct> { |
| |
| public final Map<AttributeInfo, List<String>> infoToNameMap; |
| private final TypedStructHandler handler; |
| |
| TraitType(TypeSystem typeSystem, String name, String description, ImmutableSet<String> superTraits, int numFields) { |
| super(typeSystem, TraitType.class, name, description, superTraits, numFields); |
| handler = null; |
| infoToNameMap = null; |
| } |
| |
| TraitType(TypeSystem typeSystem, String name, String description, ImmutableSet<String> superTraits, AttributeInfo... fields) |
| throws AtlasException { |
| super(typeSystem, TraitType.class, name, description, superTraits, fields); |
| handler = new TypedStructHandler(this); |
| infoToNameMap = TypeUtils.buildAttrInfoToNameMap(fieldMapping); |
| } |
| |
| @Override |
| public DataTypes.TypeCategory getTypeCategory() { |
| return DataTypes.TypeCategory.TRAIT; |
| } |
| |
| @Override |
| public ITypedStruct convert(Object val, Multiplicity m) throws AtlasException { |
| return handler.convert(val, m); |
| } |
| |
| public ITypedStruct createInstance() { |
| return handler.createInstance(); |
| } |
| |
| @Override |
| public void output(IStruct s, Appendable buf, String prefix, Set<IStruct> inProcess) throws AtlasException { |
| handler.output(s, buf, prefix, inProcess); |
| } |
| |
| @Override |
| public void updateSignatureHash(MessageDigest digester, Object val) throws AtlasException { |
| if( !(val instanceof ITypedStruct)) { |
| throw new IllegalArgumentException("Unexpected value type " + val.getClass().getSimpleName() + ". Expected instance of ITypedStruct"); |
| } |
| digester.update(getName().getBytes(Charset.forName("UTF-8"))); |
| |
| if(fieldMapping.fields != null && val != null) { |
| IStruct typedValue = (IStruct) val; |
| for (AttributeInfo aInfo : fieldMapping.fields.values()) { |
| Object attrVal = typedValue.get(aInfo.name); |
| if(attrVal != null) { |
| aInfo.dataType().updateSignatureHash(digester, attrVal); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public List<String> getNames(AttributeInfo info) { |
| return infoToNameMap.get(info); |
| } |
| |
| } |