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Diffstat (limited to 'src/org/traccar/web/JsonConverter.java')
-rw-r--r--src/org/traccar/web/JsonConverter.java155
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diff --git a/src/org/traccar/web/JsonConverter.java b/src/org/traccar/web/JsonConverter.java
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+++ b/src/org/traccar/web/JsonConverter.java
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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.web;
+
+import java.beans.Introspector;
+import java.io.Reader;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Collection;
+import java.util.Date;
+import java.util.Map;
+import javax.json.Json;
+import javax.json.JsonArray;
+import javax.json.JsonArrayBuilder;
+import javax.json.JsonObject;
+import javax.json.JsonObjectBuilder;
+import javax.json.JsonValue;
+import org.traccar.model.Factory;
+import org.traccar.model.MiscFormatter;
+
+public class JsonConverter {
+
+ private static final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
+
+ public static Date parseDate(String value) throws ParseException {
+ return dateFormat.parse(value);
+ }
+
+ public static <T extends Factory> T objectFromJson(Reader reader, T prototype) throws ParseException {
+ return objectFromJson(Json.createReader(reader).readObject(), prototype);
+ }
+
+ public static <T> T enumObjectFromJson(Reader reader, EnumFactory<? extends Enum<?>> factory) throws ParseException {
+ JsonObject json = Json.createReader(reader).readObject();
+ T object = factory.<T>create(json);
+ populateObject(json, object);
+ return object;
+ }
+
+ public static <T extends Factory> T objectFromJson(JsonObject json, T prototype) throws ParseException {
+ T object = (T) prototype.create();
+ populateObject(json, object);
+ return object;
+ }
+
+ private static void populateObject(JsonObject json, Object object) throws ParseException {
+ Method[] methods = object.getClass().getMethods();
+
+ for (final Method method : methods) {
+ if (method.getName().startsWith("set") && method.getParameterTypes().length == 1) {
+
+ final String name = Introspector.decapitalize(method.getName().substring(3));
+ Class<?> parameterType = method.getParameterTypes()[0];
+
+ if (json.containsKey(name)) try {
+ if (parameterType.equals(boolean.class)) {
+ method.invoke(object, json.getBoolean(name));
+ } else if (parameterType.equals(int.class)) {
+ method.invoke(object, json.getJsonNumber(name).intValue());
+ } else if (parameterType.equals(long.class)) {
+ if (json.get(name).getValueType() == JsonValue.ValueType.NUMBER) {
+ method.invoke(object, json.getJsonNumber(name).longValue());
+ }
+ } else if (parameterType.equals(double.class)) {
+ method.invoke(object, json.getJsonNumber(name).doubleValue());
+ } else if (parameterType.equals(String.class)) {
+ method.invoke(object, json.getString(name));
+ } else if (parameterType.equals(Date.class)) {
+ method.invoke(object, dateFormat.parse(json.getString(name)));
+ } else if (parameterType.isEnum()) {
+ method.invoke(object, Enum.valueOf((Class<? extends Enum>) parameterType, json.getString(name)));
+ } else if (parameterType.equals(Map.class)) {
+ //method.invoke(object, json.getString(name));
+ } else {
+ Object nestedObject = parameterType.newInstance();
+ populateObject(json.getJsonObject(name), nestedObject);
+ method.invoke(object, nestedObject);
+ }
+ } catch (IllegalAccessException | InvocationTargetException | InstantiationException error) {
+ }
+ }
+ }
+
+ }
+
+ public static <T> JsonObject objectToJson(T object) {
+
+ JsonObjectBuilder json = Json.createObjectBuilder();
+
+ Method[] methods = object.getClass().getMethods();
+
+ for (Method method : methods) {
+ if(method.isAnnotationPresent(JsonIgnore.class)) {
+ continue;
+ }
+ if (method.getName().startsWith("get") && method.getParameterTypes().length == 0) {
+ String name = Introspector.decapitalize(method.getName().substring(3));
+ try {
+ if (method.getReturnType().equals(boolean.class)) {
+ json.add(name, (Boolean) method.invoke(object));
+ } else if (method.getReturnType().equals(int.class)) {
+ json.add(name, (Integer) method.invoke(object));
+ } else if (method.getReturnType().equals(long.class)) {
+ json.add(name, (Long) method.invoke(object));
+ } else if (method.getReturnType().equals(double.class)) {
+ json.add(name, (Double) method.invoke(object));
+ } else if (method.getReturnType().equals(String.class)) {
+ String value = (String) method.invoke(object);
+ if (value != null) {
+ json.add(name, value);
+ }
+ } else if (method.getReturnType().equals(Date.class)) {
+ Date value = (Date) method.invoke(object);
+ if (value != null) {
+ json.add(name, dateFormat.format(value));
+ }
+ } else if (method.getReturnType().equals(Map.class)) {
+ json.add(name, MiscFormatter.toJson((Map) method.invoke(object)));
+ }
+ } catch (IllegalAccessException | InvocationTargetException error) {
+ }
+ }
+ }
+
+ return json.build();
+ }
+
+ public static JsonArray arrayToJson(Collection<?> array) {
+
+ JsonArrayBuilder json = Json.createArrayBuilder();
+
+ for (Object object : array) {
+ json.add(objectToJson(object));
+ }
+
+ return json.build();
+ }
+
+}