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/* * Copyright 2014 the original author or authors. * * Licensed 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.springframework.social.facebook.api.impl.json; import java.io.IOException; import java.util.Collections; import java.util.List; import org.springframework.social.facebook.api.Reference; import com.fasterxml.jackson.core.JsonParser; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.DeserializationContext; import com.fasterxml.jackson.databind.JsonDeserializer; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.ObjectMapper; class ReferenceListDeserializer extends JsonDeserializer<List<Reference>> { @SuppressWarnings("unchecked") @Override public List<Reference> deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException { ObjectMapper mapper = new ObjectMapper(); mapper.registerModule(new FacebookModule()); jp.setCodec(mapper); if (jp.hasCurrentToken()) { JsonNode dataNode = (JsonNode) jp.readValueAs(JsonNode.class).get("data"); if (dataNode != null) { return (List<Reference>) mapper.reader(new TypeReference<List<Reference>>() { }).readValue(dataNode); } } return Collections.emptyList(); } }