/*
* 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.api;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.json.client.JSONParser;
import org.jboss.errai.common.client.api.extension.InitVotes;
import org.jboss.errai.common.client.protocols.SerializationParts;
import org.jboss.errai.marshalling.client.MarshallingSessionProviderFactory;
import org.jboss.errai.marshalling.client.api.json.EJObject;
import org.jboss.errai.marshalling.client.api.json.EJValue;
import org.jboss.errai.marshalling.client.api.json.impl.gwt.GWTJSON;
import org.jboss.errai.marshalling.client.protocols.MarshallingSessionProvider;
import java.util.List;
import java.util.Map;
/**
* @author Mike Brock <cbrock@redhat.com>
*/
public class MarshallerFramework implements EntryPoint {
private static MarshallerFactory marshallerFactory;
private static boolean automarshal = true;
static {
InitVotes.waitFor(MarshallerFramework.class);
marshallerFactory = GWT.create(MarshallerFactory.class);
ParserFactory.registerParser(new Parser() {
@Override
public EJValue parse(String input) {
return GWTJSON.wrap(JSONParser.parseStrict(input));
}
});
InitVotes.voteFor(MarshallerFramework.class);
}
@Override
public void onModuleLoad() {
}
public static void initializeDefaultSessionProvider() {
if (!MarshallingSessionProviderFactory.isMarshallingSessionProviderRegistered()) {
MarshallingSessionProviderFactory.setMarshallingSessionProvider(new MarshallingSessionProvider() {
@Override
public MarshallingSession getEncoding() {
return new MarshallerFramework.JSONMarshallingSession();
}
@Override
public MarshallingSession getDecoding() {
return new MarshallerFramework.JSONMarshallingSession();
}
@Override
public boolean hasMarshaller(String fqcn) {
return MarshallerFramework.getMarshallerFactory().getMarshaller(null, fqcn) != null;
}
@Override
public Marshaller getMarshaller(String fqcn) {
return MarshallerFramework.getMarshallerFactory().getMarshaller(null, fqcn);
}
});
}
}
public static class JSONMarshallingSession extends AbstractMarshallingSession {
private static final MappingContext mappingContext = new MappingContext() {
@Override
public Marshaller<Object> getMarshaller(String clazz) {
return marshallerFactory.getMarshaller("json", clazz);
}
@Override
public boolean hasMarshaller(String clazzName) {
return marshallerFactory.getMarshaller(clazzName, "json") != null;
}
@Override
public boolean canMarshal(String cls) {
return marshallerFactory.getMarshaller("json", cls) != null;
}
};
@Override
public MappingContext getMappingContext() {
return mappingContext;
}
@Override
public Marshaller<Object> getMarshallerInstance(String fqcn) {
if (automarshal) {
return marshallerFactory.getMarshaller(null, fqcn);
}
else {
Marshaller<Object> m = marshallerFactory.getMarshaller(null, fqcn);
if (m == null) {
m = new Marshaller<Object>() {
@Override
public Class<Object> getTypeHandled() {
return Object.class;
}
@Override
public Object demarshall(EJValue o, MarshallingSession ctx) {
return o.getRawValue().toString();
}
@Override
public String marshall(Object o, MarshallingSession ctx) {
return "\"MarshallingNotSupported\"";
}
};
}
return m;
}
}
@Override
public String determineTypeFor(String formatType, Object o) {
EJValue jsonValue = (EJValue) o;
if (jsonValue.isObject() != null) {
EJObject jsonObject = jsonValue.isObject();
if (jsonObject.containsKey(SerializationParts.ENCODED_TYPE)) {
return jsonObject.get(SerializationParts.ENCODED_TYPE).isString().stringValue();
}
else {
return Map.class.getName();
}
}
else if (jsonValue.isString() != null) {
return String.class.getName();
}
else if (jsonValue.isNumber() != null) {
return Double.class.getName();
}
else if (jsonValue.isBoolean() != null) {
return Boolean.class.getName();
}
else if (jsonValue.isArray() != null) {
return List.class.getName();
}
else if (jsonValue.isNull()) {
return null;
}
throw new RuntimeException("unknown type: cannot reverse map value to concrete Java type: " + o);
}
}
public static void setAutomarshal(boolean auto) {
automarshal = auto;
}
public static boolean isAutomarshal() {
return automarshal;
}
public static MarshallerFactory getMarshallerFactory() {
return marshallerFactory;
}
}