helperfactory.java

hsql是很有名的嵌入式数据库

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 * software without specific prior written permission.
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package org.hsqldb.util;

/**
 * @author Nicolas BAZIN, INGENICO
 * @version 1.7.0
 */

// [e-mail] 20020703 - added reference to OracleTransferHelper
class HelperFactory {

    HelperFactory() {}

    // TransferHelper factory
    static TransferHelper getHelper(String productLowerName) {

        TransferHelper f = null;

        if (productLowerName.indexOf("hsql database") != -1) {
            f = new HsqldbTransferHelper();
        } else if (productLowerName.indexOf("postgresql") != -1) {
            f = new PostgresTransferHelper();
        } else if (productLowerName.indexOf("mckoi") != -1) {
            f = new McKoiTransferHelper();
        } else if (productLowerName.indexOf("informix") != -1) {
            f = new InformixTransferHelper();
        } else if (productLowerName.indexOf("oracle") != -1) {
            System.out.println("using the Oracle helper");

            f = new OracleTransferHelper();
        } else if (productLowerName.equals("access")
                   || (productLowerName.indexOf("microsoft") != -1)) {
            f = new SqlServerTransferHelper();
        } else {
            f = new TransferHelper();
        }

        return (f);
    }
}