| /* |
| * 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.olingo.client.core.serialization; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URI; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.olingo.client.api.data.ResWrap; |
| import org.apache.olingo.client.api.serialization.ODataDeserializerException; |
| import org.apache.olingo.commons.api.Constants; |
| import org.apache.olingo.commons.api.data.ContextURL; |
| import org.apache.olingo.commons.api.data.DeletedEntity; |
| import org.apache.olingo.commons.api.data.Delta; |
| import org.apache.olingo.commons.api.data.DeltaLink; |
| |
| import com.fasterxml.jackson.core.JsonFactory; |
| import com.fasterxml.jackson.core.JsonParser; |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| |
| public class JsonDeltaDeserializer extends JsonDeserializer { |
| |
| public JsonDeltaDeserializer(final boolean serverMode) { |
| super(serverMode); |
| } |
| |
| protected ResWrap<Delta> doDeserialize(final JsonParser parser) throws IOException { |
| |
| final ObjectNode tree = parser.getCodec().readTree(parser); |
| |
| final Delta delta = new Delta(); |
| |
| final URI contextURL = tree.hasNonNull(Constants.JSON_CONTEXT) ? |
| URI.create(tree.get(Constants.JSON_CONTEXT).textValue()) : null; |
| if (contextURL != null) { |
| delta.setBaseURI(URI.create(StringUtils.substringBefore(contextURL.toASCIIString(), Constants.METADATA))); |
| } |
| |
| if (tree.hasNonNull(Constants.JSON_COUNT)) { |
| delta.setCount(tree.get(Constants.JSON_COUNT).asInt()); |
| } |
| if (tree.hasNonNull(Constants.JSON_NEXT_LINK)) { |
| delta.setNext(URI.create(tree.get(Constants.JSON_NEXT_LINK).textValue())); |
| } |
| if (tree.hasNonNull(Constants.JSON_DELTA_LINK)) { |
| delta.setDeltaLink(URI.create(tree.get(Constants.JSON_DELTA_LINK).textValue())); |
| } |
| |
| if (tree.hasNonNull(Constants.VALUE)) { |
| JsonEntityDeserializer entityDeserializer = new JsonEntityDeserializer(serverMode); |
| for (JsonNode jsonNode : tree.get(Constants.VALUE)) { |
| final ObjectNode item = (ObjectNode) jsonNode; |
| final ContextURL itemContextURL = item.hasNonNull(Constants.JSON_CONTEXT) ? |
| ContextURLParser.parse(URI.create(item.get(Constants.JSON_CONTEXT).textValue())) : null; |
| item.remove(Constants.JSON_CONTEXT); |
| |
| if (itemContextURL == null || itemContextURL.isEntity()) { |
| delta.getEntities().add( |
| entityDeserializer.doDeserialize(item.traverse(parser.getCodec())).getPayload()); |
| } else if (itemContextURL.isDeltaDeletedEntity()) { |
| delta.getDeletedEntities().add(parser.getCodec().treeToValue(item, DeletedEntity.class)); |
| } else if (itemContextURL.isDeltaLink()) { |
| delta.getAddedLinks().add(parser.getCodec().treeToValue(item, DeltaLink.class)); |
| } else if (itemContextURL.isDeltaDeletedLink()) { |
| delta.getDeletedLinks().add(parser.getCodec().treeToValue(item, DeltaLink.class)); |
| } |
| } |
| } |
| |
| return new ResWrap<Delta>(contextURL, null, delta); |
| } |
| |
| public ResWrap<Delta> toDelta(final InputStream input) throws ODataDeserializerException { |
| try { |
| JsonParser parser = new JsonFactory(new ObjectMapper()).createParser(input); |
| return doDeserialize(parser); |
| } catch (final IOException e) { |
| throw new ODataDeserializerException(e); |
| } |
| } |
| } |