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/*
* Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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.traccar.database;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;
import javax.json.Json;
import javax.json.JsonArray;
import javax.json.JsonArrayBuilder;
import javax.json.JsonObject;
import javax.json.JsonObjectBuilder;
import org.traccar.helper.Log;
public class ObjectConverter {
public static final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ssZ");
public static JsonArray arrayToJson(Collection<? extends Convertable> collection) {
JsonArrayBuilder array = Json.createArrayBuilder();
for (Convertable object : collection) {
array.add(object.toJson());
}
return array.build();
}
private static String getColumnName(String key) {
return key.replaceAll("([A-Z])", "_$1").toLowerCase();
}
private static boolean hasColumn(ResultSet resultSet, String columnName) throws SQLException {
ResultSetMetaData metaData = resultSet.getMetaData();
for (int i = 1; i <= metaData.getColumnCount(); i++) {
if (columnName.equalsIgnoreCase(metaData.getColumnName(i))) {
return true;
}
}
return false;
}
public static String getString(JsonObject json, String key) {
if (json.containsKey(key)) {
return json.getString(key);
}
return null;
}
public static String getString(ResultSet record, String key) throws SQLException {
String column = getColumnName(key);
if (hasColumn(record, column)) {
return record.getString(column);
}
return null;
}
public static void putString(JsonObjectBuilder json, String key, String value) {
if (value != null) {
json.add(key, value);
}
}
public static long getLong(JsonObject json, String key) {
if (json.containsKey(key)) {
return json.getJsonNumber(key).longValue();
}
return 0;
}
public static long getLong(ResultSet record, String key) throws SQLException {
String column = getColumnName(key);
if (hasColumn(record, column)) {
return record.getLong(column);
}
return 0;
}
public static void putLong(JsonObjectBuilder json, String key, long value) {
json.add(key, value);
}
public static Date getDate(JsonObject json, String key) {
if (json.containsKey(key)) {
try {
return dateFormat.parse(json.getString(key));
} catch (ParseException error) {
Log.warning(error);
}
}
return null;
}
public static Date getDate(ResultSet record, String key) throws SQLException {
String column = getColumnName(key);
if (hasColumn(record, column)) {
return record.getDate(column);
}
return null;
}
public static void putDate(JsonObjectBuilder json, String key, Date value) {
if (value != null) {
json.add(key, dateFormat.format(value));
}
}
}
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