/*
* Copyright 2014 TWO SIGMA OPEN SOURCE, LLC
*
* 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 com.twosigma.beaker.jvm.serialization;
import java.util.ArrayList;
import java.util.List;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/*
* This class is used to deserialize output data that contain standard output or error in the notebook
*/
public class CollectionDeserializer implements ObjectDeserializer {
private final static Logger logger = LoggerFactory.getLogger(CollectionDeserializer.class.getName());
private final BeakerObjectConverter parent;
public CollectionDeserializer(BeakerObjectConverter p) {
parent = p;
}
@Override
public boolean canBeUsed(JsonNode n) {
return n.isArray();
}
@Override
public Object deserialize(JsonNode n, ObjectMapper mapper) {
List<Object> o = new ArrayList<Object>();
try {
logger.debug("using custom array deserializer");
for(int i=0; i<n.size(); i++) {
o.add(parent.deserialize(n.get(i), mapper));
}
} catch (Exception e) {
logger.error("exception deserializing Collection ", e);
o = null;
}
return o;
}
}