/*
* This file is provided 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 com.basho.riak.client.raw.http;
import java.io.IOException;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.JsonToken;
import org.codehaus.jackson.map.DeserializationContext;
import org.codehaus.jackson.map.JsonDeserializer;
import com.basho.riak.client.http.util.Constants;
import com.basho.riak.client.query.functions.NamedErlangFunction;
/**
* Deserializes {@link NamedErlangFunction}s from JSON
*
* @author russell
*
*/
public class NamedErlangFunctionDeserializer extends JsonDeserializer<NamedErlangFunction> {
/*
* (non-Javadoc)
*
* @see
* org.codehaus.jackson.map.JsonDeserializer#deserialize(org.codehaus.jackson
* .JsonParser, org.codehaus.jackson.map.DeserializationContext)
*/
@Override public NamedErlangFunction deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException,
JsonProcessingException {
JsonToken token = jp.getCurrentToken();
if (JsonToken.START_OBJECT.equals(token)) {
String mod = null;
String fun = null;
while (!JsonToken.END_OBJECT.equals(token)) {
String field = jp.getCurrentName();
if (Constants.FL_SCHEMA_FUN_MOD.equals(field)) {
jp.nextToken();
mod = jp.getText();
} else if (Constants.FL_SCHEMA_FUN_FUN.equals(field)) {
jp.nextToken();
fun = jp.getText();
}
token = jp.nextToken();
}
if (mod != null && fun != null) {
return new NamedErlangFunction(mod, fun);
} else {
return null;
}
}
throw ctxt.mappingException(NamedErlangFunction.class);
}
}