| /** |
| * 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.persistence; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| |
| import org.apache.atlas.AtlasException; |
| import org.apache.atlas.typesystem.IReferenceableInstance; |
| import org.apache.atlas.typesystem.IStruct; |
| import org.apache.atlas.typesystem.ITypedReferenceableInstance; |
| import org.apache.atlas.typesystem.ITypedStruct; |
| import org.apache.atlas.typesystem.types.ClassType; |
| import org.apache.atlas.typesystem.types.FieldMapping; |
| import org.apache.atlas.typesystem.types.TypeSystem; |
| import org.apache.atlas.utils.MD5Utils; |
| |
| import java.math.BigDecimal; |
| import java.math.BigInteger; |
| import java.security.MessageDigest; |
| import java.util.Date; |
| import java.util.HashSet; |
| |
| /* |
| * @todo handle names prefixed by traitName. |
| */ |
| public class ReferenceableInstance extends StructInstance implements ITypedReferenceableInstance { |
| |
| private final ImmutableMap<String, ITypedStruct> traits; |
| private final ImmutableList<String> traitNames; |
| private Id id; |
| |
| |
| public ReferenceableInstance(Id id, String dataTypeName, FieldMapping fieldMapping, boolean[] nullFlags, |
| boolean[] explicitNullFlags, boolean[] bools, byte[] bytes, short[] shorts, int[] ints, long[] longs, float[] floats, double[] doubles, |
| BigDecimal[] bigDecimals, BigInteger[] bigIntegers, Date[] dates, String[] strings, |
| ImmutableList<Object>[] arrays, ImmutableMap<Object, Object>[] maps, StructInstance[] structs, |
| ReferenceableInstance[] referenceableInstances, Id[] ids, ImmutableMap<String, ITypedStruct> traits) { |
| super(dataTypeName, fieldMapping, nullFlags, explicitNullFlags, bools, bytes, shorts, ints, longs, floats, doubles, bigDecimals, |
| bigIntegers, dates, strings, arrays, maps, structs, referenceableInstances, ids); |
| this.id = id; |
| this.traits = traits; |
| ImmutableList.Builder<String> b = new ImmutableList.Builder<String>(); |
| for (String t : traits.keySet()) { |
| b.add(t); |
| } |
| this.traitNames = b.build(); |
| } |
| |
| @Override |
| public ImmutableList<String> getTraits() { |
| return traitNames; |
| } |
| |
| @Override |
| public Id getId() { |
| return id; |
| } |
| |
| @Override |
| public IStruct getTrait(String typeName) { |
| return traits.get(typeName); |
| } |
| |
| /** |
| * @nopub |
| * @param id |
| */ |
| public void replaceWithNewId(Id id) { |
| this.id = id; |
| } |
| |
| @Override |
| public String toString() { |
| try { |
| StringBuilder buf = new StringBuilder(); |
| String prefix = ""; |
| |
| fieldMapping.output(this, buf, prefix, new HashSet<IReferenceableInstance>()); |
| return buf.toString(); |
| |
| } catch (AtlasException me) { |
| throw new RuntimeException(me); |
| } |
| } |
| |
| @Override |
| public String toShortString() { |
| String name = null; |
| if (fieldMapping().fields.containsKey("name")) { |
| try { |
| name = getString("name"); |
| } catch (AtlasException e) { |
| //ignore if there is no field name |
| } |
| } |
| return String.format("entity[type=%s guid=%s name=%s]", getTypeName(), getId()._getId(), name); |
| } |
| |
| @Override |
| public String getSignatureHash(MessageDigest digester) throws AtlasException { |
| ClassType classType = TypeSystem.getInstance().getDataType(ClassType.class, getTypeName()); |
| classType.updateSignatureHash(digester, this); |
| byte[] digest = digester.digest(); |
| return MD5Utils.toString(digest); |
| } |
| } |