com.wedeploy.api.serializer.SerializerEngine Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of Liferay, Inc. nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.wedeploy.api.serializer;
import java.util.HashMap;
import java.util.Map;
/**
* Main class that performs bindings and holds instances of serializer and parser.
*/
public class SerializerEngine {
/**
* Returns singleton instance of the engine.
*/
public static SerializerEngine instance() {
return instance;
}
public Parser parser() {
return defaultEngines().getParser();
}
/**
* Returns te {@link Parser} instance.
*/
public Parser parser(String contentType) {
Engines engines = lookupEngines(contentType);
return engines.getParser();
}
/**
* Manual registration of engines.
*/
public void registerEngines(
String serializerType, Engines engines, boolean isDefault) {
enginesMap.put(serializerType, engines);
if (isDefault) {
defaultEngines = engines;
}
}
public Serializer serializer() {
return defaultEngines().getSerializer();
}
/**
* Returns the {@link Serializer} instance.
*/
public Serializer serializer(String contentType) {
Engines engines = lookupEngines(contentType);
return engines.getSerializer();
}
protected SerializerEngine() {
}
protected void clearEngines() {
defaultEngines = null;
enginesMap.clear();
}
protected Engines defaultEngines() {
if (defaultEngines == null) {
throw new SerializerException("Default content type is not set.");
}
return defaultEngines;
}
protected Engines lookupEngines(String contentType) {
Engines engines = enginesMap.get(contentType);
if (engines == null) {
if (defaultEngines == null) {
throw new SerializerException(
"Engine for content type not found: " + contentType);
}
return defaultEngines;
}
return engines;
}
private static final SerializerEngine instance = new SerializerEngine();
private Engines defaultEngines;
private Map enginesMap = new HashMap<>();
}