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 *  to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.dba.sybase;

import java.sql.DatabaseMetaData;
import java.sql.SQLException;

import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.dba.DbAdapterFactory;

/**
 * Detects Sybase database from JDBC metadata.
 * 
 * @since 1.2
 * @author Andrus Adamchik
 */
public class SybaseSniffer implements DbAdapterFactory {

    public DbAdapter createAdapter(DatabaseMetaData md) throws SQLException {    	
    	// JTDS driver returns "sql server" for Sybase, so need to handle it differently
    	String driver = md.getDriverName();
    	if(driver != null && driver.toLowerCase().startsWith("jtds")) {
    		String url = md.getURL();
    		return url != null && url.toLowerCase().startsWith("jdbc:jtds:sybase:")
    		        ? new SybaseAdapter()
                    : null;
    	}
    	else {
            String dbName = md.getDatabaseProductName();
            return dbName != null && dbName.toUpperCase().indexOf("ADAPTIVE SERVER") >= 0
                    ? new SybaseAdapter()
                    : null;
    	}
    }
}
