org.springframework.social.linkedin.api.impl.json.CodeDeserializer.java Source code

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Here is the source code for org.springframework.social.linkedin.api.impl.json.CodeDeserializer.java

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/*
 * Copyright 2013 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.linkedin.api.impl.json;

import java.io.IOException;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.JsonToken;
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 CodeDeserializer extends JsonDeserializer<String> {

    private static final String VALUE = "code";

    @Override
    public String deserialize(JsonParser jp, DeserializationContext ctxt)
            throws IOException, JsonProcessingException {
        if (jp.hasCurrentToken() && jp.getCurrentToken().equals(JsonToken.START_OBJECT)) {
            ObjectMapper mapper = new ObjectMapper();
            JsonNode node = mapper.reader(JsonNode.class).readValue(jp);
            return node.has(VALUE) ? node.get(VALUE).textValue() : null;
        }

        throw ctxt.mappingException("Expected JSON object");
    }

}