/*
* Copyright 2011 JBoss, by Red Hat, Inc
*
* 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.jboss.errai.marshalling.client;
import org.jboss.errai.common.client.protocols.SerializationParts;
import org.jboss.errai.marshalling.client.api.Marshaller;
import org.jboss.errai.marshalling.client.api.MarshallingSession;
import org.jboss.errai.marshalling.client.api.ParserFactory;
import org.jboss.errai.marshalling.client.marshallers.ListMarshaller;
import org.jboss.errai.marshalling.client.marshallers.MapMarshaller;
import org.jboss.errai.marshalling.client.util.NumbersUtils;
import java.io.IOException;
import java.util.List;
import java.util.Map;
/**
* @author Mike Brock
*/
public abstract class Marshalling {
public static boolean canHandle(Class<?> type) {
return MarshallingSessionProviderFactory.getProvider().hasMarshaller(type.getName());
}
public static String toJSON(Object obj) {
if (obj == null) {
return "{\"" + SerializationParts.ENCODED_TYPE + "\":\"java.lang.Object\",\""
+ SerializationParts.QUALIFIED_VALUE + "\":null}";
}
MarshallingSession session = MarshallingSessionProviderFactory.getEncoding();
if (needsQualification(obj)) {
return NumbersUtils.qualifiedNumericEncoding(obj);
}
else {
return session.getMarshallerInstance(obj.getClass().getName()).marshall(obj, session);
}
}
public static void toJSON(Appendable appendTo, Object obj) throws IOException {
appendTo.append(toJSON(obj));
}
public static String toJSON(Map<Object, Object> obj) {
return MapMarshaller.INSTANCE.marshall(obj, MarshallingSessionProviderFactory.getEncoding());
}
public static String toJSON(List arr) {
return ListMarshaller.INSTANCE.marshall(arr, MarshallingSessionProviderFactory.getEncoding());
}
public static <T> T fromJSON(String json, Class<T> type) {
MarshallingSession session = MarshallingSessionProviderFactory.getDecoding();
return (T) session.getMarshallerInstance(type.getName()).demarshall(ParserFactory.get().parse(json), session);
}
public static Object fromJSON(String json) {
return fromJSON(json, Object.class);
}
private static boolean needsQualification(Object o) {
return o instanceof String
|| (o instanceof Number && o.getClass().getName().startsWith("java.lang.") && !(o instanceof Long))
|| o instanceof Boolean || o instanceof Character;
}
}