redback-common/redback-common-jdo/src/main/java/org/apache/archiva/redback/common/jdo/test/StoreManagerDebug.java

package org.apache.archiva.redback.common.jdo.test;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * 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
 * "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.
 */

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.jdo.PersistenceManager;

import org.jpox.AbstractPersistenceManagerFactory;
import org.jpox.ClassLoaderResolver;
import org.jpox.plugin.ConfigurationElement;
import org.jpox.plugin.Extension;
import org.jpox.store.rdbms.RDBMSManager;

/**
 * A extension to JPOX store manager that allows counting the SQL queries
 * 
 * @author Carlos Sanchez
 */
public class StoreManagerDebug
    extends RDBMSManager
{
    private static int counter;

    public StoreManagerDebug( ClassLoaderResolver clr, AbstractPersistenceManagerFactory pmf, String userName,
                              String password )
    {
        super( clr, pmf, userName, password );
    }

    /**
     * This method will change JPOX store manager extension so it uses our class instead of whatever is configured in
     * the plugin.xml
     * 
     * @param pmf
     */
    public static void setup( AbstractPersistenceManagerFactory pmf )
    {
        /* set our own Store Manager to allow counting SQL statements */
        Extension[] extensions =
            pmf.getPMFContext().getPluginManager().getExtensionPoint( "org.jpox.store_manager" ).getExtensions();
        Extension e = extensions[0];
        for ( ConfigurationElement element : e.getConfigurationElements() )
        {
            element.putAttribute( "class-name", StoreManagerDebug.class.getName() );
        }
    }

    /**
     * Get the currently configured store manager from JPOX. Will fail if
     * {@link #setup(AbstractPersistenceManagerFactory)} is not called first.
     * 
     * @param persistenceManager
     * @return
     */
    public static StoreManagerDebug getConfiguredStoreManager( PersistenceManager persistenceManager )
    {
        return (StoreManagerDebug) ( (org.jpox.PersistenceManager) persistenceManager ).getStoreManager();
    }

    @Override
    public int[] executeStatementBatch( String stmt, PreparedStatement ps )
        throws SQLException
    {
        counter++;
        return super.executeStatementBatch( stmt, ps );
    }

    @Override
    public ResultSet executeStatementQuery( String stmt, PreparedStatement ps )
        throws SQLException
    {
        counter++;
        return super.executeStatementQuery( stmt, ps );
    }

    @Override
    public int executeStatementUpdate( String stmt, PreparedStatement ps )
        throws SQLException
    {
        counter++;
        return super.executeStatementUpdate( stmt, ps );
    }

    public void resetCounter()
    {
        counter = 0;
    }

    public int counter()
    {
        return counter;
    }
}