org.apache.cayenne.dba.mysql

## Class MySQLPkGenerator

- java.lang.Object
- - org.apache.cayenne.dba.JdbcPkGenerator
  - - org.apache.cayenne.dba.mysql.MySQLPkGenerator

- All Implemented Interfaces:
    PkGenerator

      public class MySQLPkGenerator
      extends JdbcPkGenerator

- - ### Field Summary

    - ### Fields inherited from class org.apache.cayenne.dba.JdbcPkGenerator

      `adapter, DEFAULT_PK_CACHE_SIZE, pkCache, pkCacheSize, pkStartValue`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected String` | `dropAutoPkString()`
    `protected long` | `getLongPrimaryKey(Statement statement, String entityName)`
    `protected long` | `longPkFromDatabase(DataNode node, DbEntity entity)` Overrides superclass's implementation to perform locking of the primary key lookup table.
    `protected String` | `pkTableCreateString()`
    `protected SQLException` | `processSQLException(SQLException exception, SQLException parent)` Appends a new SQLException to the chain.

    - ### Methods inherited from class org.apache.cayenne.dba.JdbcPkGenerator

      `autoPkTableExists, createAutoPk, createAutoPkStatements, dropAutoPk, dropAutoPkStatements, generatePk, getAdapter, getPkCacheSize, pkCreateString, pkDeleteString, pkSelectString, pkUpdateString, reset, runUpdate, setPkCacheSize`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Method Detail

    - #### longPkFromDatabase

          protected long longPkFromDatabase(DataNode node,
                                            DbEntity entity)
                                     throws Exception

      Overrides superclass's implementation to perform locking of the primary key lookup table.
      Overrides:
        `longPkFromDatabase` in class `JdbcPkGenerator`
      Throws:
        `Exception`
      Since:
        3.0

    - #### processSQLException

          protected SQLException processSQLException(SQLException exception,
                                                     SQLException parent)

      Appends a new SQLException to the chain. If parent is null, uses the exception as the chain root.

    - #### dropAutoPkString

          protected String dropAutoPkString()

      Overrides:
        `dropAutoPkString` in class `JdbcPkGenerator`

    - #### pkTableCreateString

          protected String pkTableCreateString()

      Overrides:
        `pkTableCreateString` in class `JdbcPkGenerator`

    - #### getLongPrimaryKey

          protected long getLongPrimaryKey(Statement statement,
                                           String entityName)
                                    throws SQLException

      Throws:
        `SQLException`
      Since:
        3.0

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