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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
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*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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package org.apache.cayenne.unit.di.client;
import org.junit.Assert;
import junit.framework.AssertionFailedError;
import org.apache.cayenne.DataChannel;
import org.apache.cayenne.ObjectContext;
import org.apache.cayenne.QueryResponse;
import org.apache.cayenne.event.EventManager;
import org.apache.cayenne.graph.GraphDiff;
import org.apache.cayenne.map.EntityResolver;
import org.apache.cayenne.query.Query;
import org.apache.cayenne.unit.di.DataChannelSyncStats;
public class ClientServerDataChannelDecorator implements DataChannel {
private DataChannel delegate;
private boolean blockingMessages;
private DataChannelSyncStats statsCounter;
public ClientServerDataChannelDecorator(DataChannel delegate) {
this.delegate = delegate;
}
public DataChannel getDelegate() {
return delegate;
}
public EntityResolver getEntityResolver() {
checkMessageAllowed("getEntityResolver");
return delegate.getEntityResolver();
}
public EventManager getEventManager() {
checkMessageAllowed("getEventManager");
return delegate.getEventManager();
}
public QueryResponse onQuery(ObjectContext originatingContext, Query query) {
checkMessageAllowed("onQuery");
return delegate.onQuery(originatingContext, query);
}
public GraphDiff onSync(
ObjectContext originatingContext,
GraphDiff changes,
int syncType) {
checkMessageAllowed("onSync");
countDiffs(changes);
return delegate.onSync(originatingContext, changes, syncType);
}
public void setBlockingMessages(boolean blockingMessages) {
this.blockingMessages = blockingMessages;
}
public void setSyncStatsCounter(DataChannelSyncStats statsCounter) {
this.statsCounter = statsCounter;
}
private void checkMessageAllowed(String label) throws AssertionFailedError {
if (blockingMessages) {
Assert.fail("Message is unexpected: " + label);
}
}
private void countDiffs(GraphDiff changes) {
if (statsCounter != null) {
changes.apply(statsCounter);
}
}
}