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 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.unit.di.server;

import org.apache.cayenne.access.UnitTestDomain;
import org.apache.cayenne.configuration.server.ServerRuntime;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.di.Provider;
import org.apache.cayenne.unit.di.DataChannelInterceptor;
import org.apache.cayenne.unit.di.DataChannelSyncStats;
import org.apache.cayenne.unit.di.UnitTestClosure;

public class ServerCaseDataChannelInterceptor implements DataChannelInterceptor {

    @Inject
    // injecting provider to make this provider independent from scoping of ServerRuntime
    protected Provider<ServerRuntime> serverRuntimeProvider;

    public void runWithQueriesBlocked(UnitTestClosure closure) {

        UnitTestDomain channel = (UnitTestDomain) serverRuntimeProvider
                .get()
                .getChannel();

        channel.setBlockingQueries(true);
        try {
            closure.execute();
        }
        finally {
            channel.setBlockingQueries(false);
        }
    }

    public int runWithQueryCounter(UnitTestClosure closure) {

        UnitTestDomain channel = (UnitTestDomain) serverRuntimeProvider
                .get()
                .getChannel();

        int start = channel.getQueryCount();
        int end;
        try {
            closure.execute();
        }
        finally {
            end = channel.getQueryCount();
        }

        return end - start;
    }

    public DataChannelSyncStats runWithSyncStatsCollection(UnitTestClosure closure) {
        throw new UnsupportedOperationException("TODO... so far unused");
    }
}