Kore/app/src/main/java/org/xbmc/kore/utils/JsonUtils.java

107 lines
3.7 KiB
Java

/*
* Copyright 2015 Synced Synapse. 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 org.xbmc.kore.utils;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import java.util.ArrayList;
import java.util.List;
/**
* Misc util methods for use with JSON
*/
public class JsonUtils {
public static String stringFromJsonNode(JsonNode node, String key) {
// Duplicate code for performance resons
if (node == null) return null;
JsonNode value = node.get(key);
if (value == null) return null;
return value.textValue();
}
public static String stringFromJsonNode(JsonNode node, String key, String defaultValue) {
if (node == null) return defaultValue;
JsonNode value = node.get(key);
if (value == null) return defaultValue;
return value.textValue();
}
public static double doubleFromJsonNode(JsonNode node, String key) {
return doubleFromJsonNode(node, key, 0);
}
public static double doubleFromJsonNode(JsonNode node, String key, double defaultValue) {
if (node == null) return defaultValue;
JsonNode value = node.get(key);
if (value == null) return defaultValue;
return value.asDouble();
}
public static int intFromJsonNode(JsonNode node, String key) {
// Duplicate code for performance resons
if (node == null) return 0;
JsonNode value = node.get(key);
if (value == null) return 0;
return value.asInt();
}
public static int intFromJsonNode(JsonNode node, String key, int defaultValue) {
if (node == null) return defaultValue;
JsonNode value = node.get(key);
if (value == null) return defaultValue;
return value.asInt();
}
public static boolean booleanFromJsonNode(JsonNode node, String key) {
return booleanFromJsonNode(node, key, false);
}
public static boolean booleanFromJsonNode(JsonNode node, String key, boolean defaultValue) {
if (node == null) return defaultValue;
JsonNode value = node.get(key);
if (value == null) return defaultValue;
return value.asBoolean();
}
public static List<String> stringListFromJsonNode(JsonNode node, String key) {
if (node == null) return new ArrayList<String>(0);
JsonNode value = node.get(key);
if (value == null) return new ArrayList<String>(0);
ArrayNode arrayNode = (ArrayNode)value;
ArrayList<String> result = new ArrayList<String>(arrayNode.size());
for (JsonNode innerNode : arrayNode) {
result.add(innerNode.textValue());
}
return result;
}
public static List<Integer> integerListFromJsonNode(JsonNode node, String key) {
if (node == null) return new ArrayList<Integer>(0);
JsonNode value = node.get(key);
if (value == null) return new ArrayList<Integer>(0);
ArrayNode arrayNode = (ArrayNode)value;
ArrayList<Integer> result = new ArrayList<Integer>(arrayNode.size());
for (JsonNode innerNode : arrayNode) {
result.add(innerNode.asInt());
}
return result;
}
}