Class SequenceBeforeKeyGenerator

  • All Implemented Interfaces:
    KeyGenerator

    public final class SequenceBeforeKeyGenerator
    extends AbstractBeforeKeyGenerator
    Extends AbstractBeforeKeyGenerator and implements additional methods specific to Sequence Key generator. It invovles the fetching the Table ID before the record is inserted into the table.
    Version:
    $Revision$ $Date: 2009-07-13 17:22:43 (Tue, 28 Jul 2009) $
    Author:
    Ahmad Hassan, Ralf Joachim
    • Method Detail

      • initSqlTypeHandler

        protected void initSqlTypeHandler​(int sqlType)
        Initialize the Handler based on SQL Type.
        Parameters:
        sqlType - A SQLTypidentifier.
      • generateKey

        public java.lang.Object generateKey​(java.sql.Connection conn,
                                            java.lang.String tableName,
                                            java.lang.String primKeyName)
                                     throws PersistenceException
        Description copied from interface: KeyGenerator
        Generate a new key for the specified table. This method is called when a new object is about to be created. In some environments the name of the owner of the object is known, e.g. the principal in a J2EE server. This method is never called for DURING_INSERT key generators.
        Parameters:
        conn - An open connection within the given transaction.
        tableName - The table name.
        primKeyName - The primary key name.
        Returns:
        A new key.
        Throws:
        PersistenceException - An error occured talking to persistent storage.
      • isInSameConnection

        public boolean isInSameConnection()
        Is key generated in the same connection as INSERT? For DURING_INSERT style this method is never called.
        Returns:
        {code}True{code} If this instance is in same JDBC Connection.