com.jenkov.mrpersister.impl.mapping
Class DbPrimaryKeyDeterminer

java.lang.Object
  com.jenkov.mrpersister.impl.mapping.DbPrimaryKeyDeterminer

All Implemented Interfaces:

IDbPrimaryKeyDeterminer

public class DbPrimaryKeyDeterminer
extends java.lang.Object
implements IDbPrimaryKeyDeterminer

Author:

Jakob Jenkov, Jenkov Development

Constructor Summary

DbPrimaryKeyDeterminer()

Method Summary

java.lang.String	getPrimaryKeyColumnName(java.lang.String table, java.lang.String databaseName, java.sql.Connection connection) Deprecated. This method doesn't support compound keys (multi-column keys). Use the getPrimaryKeyMapping method instead.
IKey	getPrimaryKeyMapping(java.lang.String table, java.lang.String databaseName, java.sql.Connection connection) Returns a list of the columns that are part of the

Methods inherited from class java.lang.Object

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

Constructor Detail

DbPrimaryKeyDeterminer

public DbPrimaryKeyDeterminer()

Method Detail

getPrimaryKeyColumnName

public java.lang.String getPrimaryKeyColumnName(java.lang.String table,
                                                java.lang.String databaseName,
                                                java.sql.Connection connection)
                                         throws PersistenceException

Deprecated. This method doesn't support compound keys (multi-column keys). Use the getPrimaryKeyMapping method instead.

Description copied from interface: IDbPrimaryKeyDeterminer

Returns the primary key column name for the given table and database. The database name is optional as this name is usually implicitly referenced in the database connection. You can leave it to null in most cases (in fact you should only need to set this if referencing a database other than the one connected to. A different database on the same server that is, not a different database server).

Specified by:

getPrimaryKeyColumnName in interface IDbPrimaryKeyDeterminer

Parameters:

table - The name of the table to determine the primary key column name of.

databaseName - The name of the database. Set this to null in most cases. See above description.

connection - The connection to the database in which the table exists to determine primary key column for.

Returns:

The name of the primary key column of the given table. Null if the table has no primary key.

Throws:

PersistenceException - If anything goes wrong during primary key column name determining.

getPrimaryKeyMapping

public IKey getPrimaryKeyMapping(java.lang.String table,
                                 java.lang.String databaseName,
                                 java.sql.Connection connection)
                          throws PersistenceException

Description copied from interface: IDbPrimaryKeyDeterminer

Returns a list of the columns that are part of the

Specified by:

getPrimaryKeyMapping in interface IDbPrimaryKeyDeterminer

Returns:

Throws:

PersistenceException