com.inversoft.json.ZonedDateTimeDeserializer.java Source code

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Here is the source code for com.inversoft.json.ZonedDateTimeDeserializer.java

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/*
 * Copyright (c) 2015, Inversoft Inc., All Rights Reserved
 *
 * 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.inversoft.json;

import java.io.IOException;
import java.time.Instant;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;

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.deser.std.StdScalarDeserializer;

/**
 * Jackson deserializer for the ZonedDateTime class.
 *
 * @author Brian Pontarelli
 */
public class ZonedDateTimeDeserializer extends StdScalarDeserializer<ZonedDateTime> {
    public ZonedDateTimeDeserializer() {
        super(Long.TYPE);
    }

    @Override
    public ZonedDateTime deserialize(JsonParser jp, DeserializationContext ctxt)
            throws IOException, JsonProcessingException {
        JsonToken t = jp.getCurrentToken();
        long value;
        if (t == JsonToken.VALUE_NUMBER_INT || t == JsonToken.VALUE_NUMBER_FLOAT) {
            value = jp.getLongValue();
        } else if (t == JsonToken.VALUE_STRING) {
            String str = jp.getText().trim();
            if (str.length() == 0) {
                return null;
            }

            try {
                value = Long.parseLong(str);
            } catch (NumberFormatException e) {
                throw ctxt.mappingException(handledType());
            }
        } else {
            throw ctxt.mappingException(handledType());
        }

        return ZonedDateTime.ofInstant(Instant.ofEpochMilli(value), ZoneOffset.UTC);
    }
}