org.datanucleus.store.rdbms.sql
Class SQLTableAlphaNamer

java.lang.Object
  org.datanucleus.store.rdbms.sql.SQLTableAlphaNamer

All Implemented Interfaces:

SQLTableNamer

public class SQLTableAlphaNamer
extends Object
implements SQLTableNamer

SQLTable namer that generates names like A0, B1, C0, ... , Z0, AA0, AB0, ... etc. Tables are prefixed by a letter based on the table-group they are in, followed by a number being the number within that table-group. The candidate table-group will always be prefixed A when not predefined (i.e for JDOQL). Should handle up to 26x27 combinations (i.e 702). Anyone needing more than that has serious problems, as does their RDBMS.

Constructor Summary

SQLTableAlphaNamer()

Method Summary

String

getAliasForTable(SQLStatement stmt, org.datanucleus.store.mapped.DatastoreContainerObject table, String groupName) Method to return the alias to use for the specified table.

Methods inherited from class java.lang.Object

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

Constructor Detail

SQLTableAlphaNamer

public SQLTableAlphaNamer()

Method Detail

getAliasForTable

public String getAliasForTable(SQLStatement stmt,
                               org.datanucleus.store.mapped.DatastoreContainerObject table,
                               String groupName)

Description copied from interface: SQLTableNamer

Method to return the alias to use for the specified table.

Specified by:

getAliasForTable in interface SQLTableNamer

Parameters:

stmt - The statement where we will use the table

table - The table

groupName - Name of the table group

Returns:

The alias to use