com.wavemaker.commons.json.deserializer.WMDateDeSerializer Maven / Gradle / Ivy
/**
* Copyright (C) 2020 WaveMaker, Inc.
*
* 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.wavemaker.commons.json.deserializer;
import java.io.IOException;
import java.sql.Time;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.std.DateDeserializers;
import com.wavemaker.commons.MessageResource;
import com.wavemaker.commons.WMRuntimeException;
/**
*
* can deserialize date objects represented in one of the three formats "yyyy-MM-dd HH:mm:ss", "HH:mm:ss", ""yyyy-MM-dd".
* @author Uday Shankar
*/
public class WMDateDeSerializer extends DateDeserializers.DateDeserializer {
private static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";
private static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";
private static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
private static final Logger logger = LoggerFactory.getLogger(WMDateDeSerializer.class);
@Override
public Date deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {
JsonToken currentToken = jsonParser.getCurrentToken();
if (currentToken == JsonToken.VALUE_STRING) {
String value = jsonParser.getText();
return getDate(value);
}
return super.deserialize(jsonParser, deserializationContext);
}
public static Date getDate(String value) {
if (StringUtils.isBlank(value)) {
return null;
}
try {
Date parsedDate = new SimpleDateFormat(DEFAULT_DATE_TIME_FORMAT).parse(value);
return new Timestamp(parsedDate.getTime());
} catch (ParseException e) {
logger.trace("{} is not in the expected date time format {}", value, DEFAULT_DATE_TIME_FORMAT);
}
try {
Date parsedDate = new SimpleDateFormat(DEFAULT_DATE_FORMAT).parse(value);
return new java.sql.Date(parsedDate.getTime());
} catch (ParseException e) {
logger.trace("{} is not in the expected date format {}", value, DEFAULT_DATE_FORMAT);
}
try {
Date parsedDate = new SimpleDateFormat(DEFAULT_TIME_FORMAT).parse(value);
return new Time(parsedDate.getTime());
} catch (ParseException e) {
logger.trace("{} is not in the expected time format {}", value, DEFAULT_TIME_FORMAT);
}
throw new WMRuntimeException(MessageResource.create("com.wavemaker.commons.string.to.date.parse.failure"), value, "java.util.Date");
}
}