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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.configuration.server.DbAdapterDetector;
import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.di.AdhocObjectFactory;
import org.apache.cayenne.di.Inject;

/**
 * Detects Sybase database from JDBC metadata.
 * 
 * @since 1.2
 */
public class SybaseSniffer implements DbAdapterDetector {

    protected AdhocObjectFactory objectFactory;

    public SybaseSniffer(@Inject AdhocObjectFactory objectFactory) {
        this.objectFactory = objectFactory;
    }

    @Override
    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:")
                    ? (DbAdapter) objectFactory.newInstance(DbAdapter.class, SybaseAdapter.class.getName()) : null;
        }
        else {
            String dbName = md.getDatabaseProductName();
            return dbName != null && dbName.toUpperCase().contains("ADAPTIVE SERVER")
                    ? (DbAdapter) objectFactory.newInstance(DbAdapter.class, SybaseAdapter.class.getName()) : null;
        }
    }
}