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A continuously growing collection of utilities to measure performance, get better diagnostics,
improve performance, or do things more reliably, faster that other open source libraries...
/*
* Copyright (c) 2001-2017, Zoltan Farkas All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Additionally licensed with:
*
* 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.spf4j.base;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.Module;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.module.SimpleModule;
import java.io.IOException;
import java.util.ServiceLoader;
/**
* @author Zoltan Farkas
*/
public final class Json {
public static final JsonFactory FACTORY = new JsonFactory();
public static final ObjectMapper MAPPER = new ObjectMapper(FACTORY);
private Json() { }
static {
FACTORY.disable(JsonParser.Feature.AUTO_CLOSE_SOURCE);
SimpleModule module = new SimpleModule("spf4j");
loadServices(module);
module.addSerializer(JsonWriteable.class, jsonWritableSerializer());
MAPPER.registerModule(module);
ServiceLoader loader = ServiceLoader.load(Module.class);
for (Module mod : loader) {
MAPPER.registerModule(mod);
}
MAPPER.disable(SerializationFeature.FLUSH_AFTER_WRITE_VALUE);
FACTORY.setCodec(MAPPER);
}
private static void loadServices(final SimpleModule module) {
ServiceLoader loader = ServiceLoader.load(JsonSerializer.class);
for (JsonSerializer ser : loader) {
module.addSerializer(ser);
}
}
public static JsonSerializer jsonWritableSerializer() {
return new JsonSerializer() {
@Override
public void serialize(final JsonWriteable value, final JsonGenerator jgen, final SerializerProvider provider)
throws IOException {
Object outputTarget = jgen.getOutputTarget();
if (outputTarget instanceof Appendable) {
jgen.flush();
if (jgen.getOutputContext().getCurrentName() != null) {
((Appendable) outputTarget).append(':');
}
value.writeJsonTo((Appendable) outputTarget);
return;
}
StringBuilder json = new StringBuilder(32);
value.writeJsonTo(json);
jgen.writeRawValue(json.toString());
}
};
}
public static JsonSerializer
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