| /** |
| * 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.converters; |
| |
| import org.apache.atlas.AtlasErrorCode; |
| import org.apache.atlas.AtlasException; |
| import org.apache.atlas.exception.AtlasBaseException; |
| import org.apache.atlas.model.TypeCategory; |
| import org.apache.atlas.model.instance.AtlasStruct; |
| import org.apache.atlas.type.AtlasStructType; |
| import org.apache.atlas.type.AtlasStructType.AtlasAttribute; |
| import org.apache.atlas.type.AtlasType; |
| import org.apache.atlas.type.AtlasTypeRegistry; |
| import org.apache.atlas.typesystem.IStruct; |
| import org.apache.atlas.typesystem.Struct; |
| import org.apache.commons.collections.MapUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| public class AtlasStructFormatConverter extends AtlasAbstractFormatConverter { |
| private static final Logger LOG = LoggerFactory.getLogger(AtlasStructFormatConverter.class); |
| |
| public static final String ATTRIBUTES_PROPERTY_KEY = "attributes"; |
| |
| public AtlasStructFormatConverter(AtlasFormatConverters registry, AtlasTypeRegistry typeRegistry) { |
| this(registry, typeRegistry, TypeCategory.STRUCT); |
| } |
| |
| protected AtlasStructFormatConverter(AtlasFormatConverters registry, AtlasTypeRegistry typeRegistry, TypeCategory typeCategory) { |
| super(registry, typeRegistry, typeCategory); |
| } |
| |
| @Override |
| public Object fromV1ToV2(Object v1Obj, AtlasType type, ConverterContext converterContext) throws AtlasBaseException { |
| AtlasStruct ret = null; |
| |
| if (v1Obj != null) { |
| AtlasStructType structType = (AtlasStructType)type; |
| |
| if (v1Obj instanceof Map) { |
| final Map v1Map = (Map) v1Obj; |
| final Map v1Attribs = (Map) v1Map.get(ATTRIBUTES_PROPERTY_KEY); |
| |
| if (MapUtils.isNotEmpty(v1Attribs)) { |
| ret = new AtlasStruct(type.getTypeName(), fromV1ToV2(structType, v1Attribs, converterContext)); |
| } else { |
| ret = new AtlasStruct(type.getTypeName()); |
| } |
| } else if (v1Obj instanceof IStruct) { |
| IStruct struct = (IStruct) v1Obj; |
| Map<String, Object> v1Attribs = null; |
| |
| try { |
| v1Attribs = struct.getValuesMap(); |
| } catch (AtlasException excp) { |
| LOG.error("IStruct.getValuesMap() failed", excp); |
| } |
| |
| ret = new AtlasStruct(type.getTypeName(), fromV1ToV2(structType, v1Attribs, converterContext)); |
| } else { |
| throw new AtlasBaseException(AtlasErrorCode.UNEXPECTED_TYPE, "Map or IStruct", v1Obj.getClass().getCanonicalName()); |
| } |
| } |
| |
| return ret; |
| } |
| |
| @Override |
| public Object fromV2ToV1(Object v2Obj, AtlasType type, ConverterContext converterContext) throws AtlasBaseException { |
| Struct ret = null; |
| |
| if (v2Obj != null) { |
| AtlasStructType structType = (AtlasStructType)type; |
| |
| if (v2Obj instanceof Map) { |
| final Map v2Map = (Map) v2Obj; |
| final Map v2Attribs; |
| |
| if (v2Map.containsKey(ATTRIBUTES_PROPERTY_KEY)) { |
| v2Attribs = (Map) v2Map.get(ATTRIBUTES_PROPERTY_KEY); |
| } else { |
| v2Attribs = v2Map; |
| } |
| |
| if (MapUtils.isNotEmpty(v2Attribs)) { |
| ret = new Struct(type.getTypeName(), fromV2ToV1(structType, v2Attribs, converterContext)); |
| } else { |
| ret = new Struct(type.getTypeName()); |
| } |
| } else if (v2Obj instanceof AtlasStruct) { |
| AtlasStruct struct = (AtlasStruct) v2Obj; |
| |
| ret = new Struct(type.getTypeName(), fromV2ToV1(structType, struct.getAttributes(), converterContext)); |
| } else { |
| throw new AtlasBaseException(AtlasErrorCode.UNEXPECTED_TYPE, "Map or AtlasStruct", v2Obj.getClass().getCanonicalName()); |
| } |
| } |
| |
| return ret; |
| } |
| |
| protected Map<String, Object> fromV2ToV1(AtlasStructType structType, Map<String, Object> attributes, ConverterContext context) throws AtlasBaseException { |
| Map<String, Object> ret = null; |
| |
| if (MapUtils.isNotEmpty(attributes)) { |
| ret = new HashMap<>(); |
| |
| // Only process the requested/set attributes |
| for (String attrName : attributes.keySet()) { |
| AtlasAttribute attr = structType.getAttribute(attrName); |
| |
| if (attr == null) { |
| LOG.warn("ignored unknown attribute {}.{}", structType.getTypeName(), attrName); |
| continue; |
| } |
| |
| AtlasType attrType = attr.getAttributeType(); |
| |
| Object v2Value = attributes.get(attr.getName()); |
| Object v1Value; |
| |
| AtlasFormatConverter attrConverter = converterRegistry.getConverter(attrType.getTypeCategory()); |
| v1Value = attrConverter.fromV2ToV1(v2Value, attrType, context); |
| ret.put(attr.getName(), v1Value); |
| } |
| } |
| |
| return ret; |
| } |
| |
| protected Map<String, Object> fromV1ToV2(AtlasStructType structType, Map attributes, ConverterContext context) throws AtlasBaseException { |
| Map<String, Object> ret = null; |
| |
| if (MapUtils.isNotEmpty(attributes)) { |
| ret = new HashMap<>(); |
| |
| // Only process the requested/set attributes |
| for (Object attribKey : attributes.keySet()) { |
| String attrName = attribKey.toString(); |
| AtlasAttribute attr = structType.getAttribute(attrName); |
| |
| if (attr == null) { |
| LOG.warn("ignored unknown attribute {}.{}", structType.getTypeName(), attrName); |
| continue; |
| } |
| |
| AtlasType attrType = attr.getAttributeType(); |
| |
| AtlasFormatConverter attrConverter = converterRegistry.getConverter(attrType.getTypeCategory()); |
| Object v1Value = attributes.get(attr.getName()); |
| Object v2Value = attrConverter.fromV1ToV2(v1Value, attrType, context); |
| |
| ret.put(attr.getAttributeDef().getName(), v2Value); |
| } |
| } |
| |
| return ret; |
| } |
| } |