org.apache.activemq.artemis.utils.JsonLoader Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.activemq.artemis.utils;
import javax.json.JsonArrayBuilder;
import javax.json.JsonBuilderFactory;
import javax.json.JsonObjectBuilder;
import javax.json.JsonReader;
import javax.json.JsonReaderFactory;
import javax.json.JsonWriter;
import javax.json.JsonWriterFactory;
import javax.json.spi.JsonProvider;
import javax.json.stream.JsonGenerator;
import javax.json.stream.JsonGeneratorFactory;
import javax.json.stream.JsonParser;
import javax.json.stream.JsonParserFactory;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Map;
/**
* This is to make sure we use the proper classLoader to load JSon libraries.
* This is equivalent to using {@link javax.json.Json}
*/
public class JsonLoader {
private static final JsonProvider provider;
static {
provider = loadProvider();
}
private static JsonProvider loadProvider() {
return AccessController.doPrivileged(new PrivilegedAction() {
@Override
public JsonProvider run() {
ClassLoader originalLoader = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(JsonLoader.class.getClassLoader());
return JsonProvider.provider();
} finally {
Thread.currentThread().setContextClassLoader(originalLoader);
}
}
});
}
public static JsonParser createParser(Reader reader) {
return provider.createParser(reader);
}
public static JsonParser createParser(InputStream in) {
return provider.createParser(in);
}
public static JsonGenerator createGenerator(Writer writer) {
return provider.createGenerator(writer);
}
public static JsonGenerator createGenerator(OutputStream out) {
return provider.createGenerator(out);
}
public static JsonParserFactory createParserFactory(Map config) {
return provider.createParserFactory(config);
}
public static JsonGeneratorFactory createGeneratorFactory(Map config) {
return provider.createGeneratorFactory(config);
}
public static JsonWriter createWriter(Writer writer) {
return provider.createWriter(writer);
}
public static JsonWriter createWriter(OutputStream out) {
return provider.createWriter(out);
}
public static JsonReader createReader(Reader reader) {
return provider.createReader(reader);
}
public static JsonReader createReader(InputStream in) {
return provider.createReader(in);
}
public static JsonReaderFactory createReaderFactory(Map config) {
return provider.createReaderFactory(config);
}
public static JsonWriterFactory createWriterFactory(Map config) {
return provider.createWriterFactory(config);
}
public static JsonArrayBuilder createArrayBuilder() {
return provider.createArrayBuilder();
}
public static JsonObjectBuilder createObjectBuilder() {
return provider.createObjectBuilder();
}
public static JsonBuilderFactory createBuilderFactory(Map config) {
return provider.createBuilderFactory(config);
}
}