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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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package org.apache.cayenne.remote.service;
import org.apache.cayenne.CayenneRuntimeException;
import org.apache.cayenne.DataChannel;
import org.apache.cayenne.remote.BootstrapMessage;
import org.apache.cayenne.remote.ClientMessage;
import org.apache.cayenne.remote.QueryMessage;
import org.apache.cayenne.remote.SyncMessage;
/**
* A helper class to match message types with DataChannel methods.
*
* @since 1.2
*/
class DispatchHelper {
static Object dispatch(DataChannel channel, ClientMessage message) {
// do most common messages first...
if (message instanceof QueryMessage) {
return channel.onQuery(null, ((QueryMessage) message).getQuery());
} else if (message instanceof SyncMessage) {
SyncMessage sync = (SyncMessage) message;
return channel.onSync(null, sync.getSenderChanges(), sync.getType());
} else if (message instanceof BootstrapMessage) {
return channel.getEntityResolver().getClientEntityResolver();
} else {
throw new CayenneRuntimeException("Message dispatch error. Unsupported message: %s", message);
}
}
}