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/*
* Copyright 2011 Vaadin Ltd.
*
* 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 com.vaadin.server.widgetsetutils.metadata;
import java.util.Set;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.TreeLogger.Type;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.core.ext.typeinfo.JType;
public class ClientRpcVisitor extends TypeVisitor {
@Override
public void visitClientRpc(TreeLogger logger, JClassType type,
ConnectorBundle bundle) throws UnableToCompleteException {
Set<? extends JClassType> hierarchy = type
.getFlattenedSupertypeHierarchy();
for (JClassType subType : hierarchy) {
JMethod[] methods = subType.getMethods();
for (JMethod method : methods) {
checkReturnType(logger, method);
bundle.setNeedsInvoker(type, method);
bundle.setNeedsParamTypes(type, method);
JType[] parameterTypes = method.getParameterTypes();
for (JType paramType : parameterTypes) {
bundle.setNeedsSerialize(paramType);
}
}
}
}
public static void checkReturnType(TreeLogger logger, JMethod method)
throws UnableToCompleteException {
if (!method.getReturnType().getQualifiedSourceName().equals("void")) {
logger.log(
Type.ERROR,
"The method "
+ method.getEnclosingType()
.getQualifiedSourceName()
+ "."
+ method.getName()
+ " returns "
+ method.getReturnType().getQualifiedSourceName()
+ " but only void is supported for methods in RPC interfaces.");
throw new UnableToCompleteException();
}
}
}
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