Re: MySQL engine = NDBCLUSTER

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Thu May 08 2008 - 04:11:07 EDT

  • Next message: Borut Bolčina: "Re: MySQL engine = NDBCLUSTER"

    Hi Borut,

    On May 8, 2008, at 8:55 AM, Borut Bolčina wrote:
    > Andrus,

    Please don't ignore that there are a lot people on this list with
    large combined Cayenne knowledge, not just me. So that's not a one-on-
    one conversation.

    > If I am using AutoAdapter and DbGenerator for table creation with
    > MySQL 5
    > and table_type variable in MySQL is set to MyISAM, then according to
    > http://cayenne.apache.org/doc/api/org/apache/cayenne/dba/mysql/MySQLAdapter.htmlI
    > thought the CREATE TABLE string when the generator is run would cause
    > the
    > engine to be MyISAM or whatever the table_type is set to, but it
    > gives me
    > InnoDB:
    >
    > INFO [28 Apr 2008 11:14:57.877] Detected and installed adapter:
    > org.apache.cayenne.dba.mysql.MySQLAdapter
    > INFO [28 Apr 2008 11:14:57.884] CREATE TABLE currency_rate (country
    > VARCHAR(255) NOT NULL, currency_code VARCHAR(255) NOT NULL,
    > currency_name
    > VARCHAR(255) NOT NULL, currency_number INT NOT NULL, date DATETIME
    > NULL, id
    > INT NOT NULL, rate DECIMAL(19, 4) NOT NULL, PRIMARY KEY (id)) ENG
    > INE=InnoDB
    >
    > Now, we are planning to use NDBCLUSTER table types and if this auto
    > detection does not work, what is the way to set engine type via API?

    Looks like a limitation of MySQLSniffer. It does this to detect MySQL
    default behavior:

       ResultSet rs = statement.executeQuery("SHOW VARIABLES LIKE
    'table_type'");
       if (rs.next()) {
            String tableType = rs.getString(2);
            supportFK = tableType != null &&
    tableType.toUpperCase().equals("INNODB");
       }

    But doesn't go far enough to actually use it as a table type in
    'createTable'. Shouldn't be too hard to fix. Appreciate a Jira for it.

    Andrus



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