Package org.hibernate.engine.internal

Class JoinHelper

java.lang.Object

org.hibernate.engine.internal.JoinHelper

public final class JoinHelper
extends Object

Helper for dealing with joins.

Method Summary

Modifier and Type	Method	Description
static String[]	getLHSColumnNames(AssociationType type, int property, int begin, OuterJoinLoadable lhsPersister, Mapping mapping)	Get the columns of the owning entity which are to be used in the join
static String[]	getLHSColumnNames(AssociationType type, int property, OuterJoinLoadable lhsPersister, Mapping mapping)	Get the unqualified names of the columns of the owning entity which are to be used in the join.
static String	getLHSTableName(AssociationType type, int propertyIndex, OuterJoinLoadable lhsPersister)	Determine the name of the table that is the left-hand-side of the join.
static String[]	getRHSColumnNames(AssociationType type, SessionFactoryImplementor factory)	Get the columns of the associated table which are to be used in the join

Methods inherited from class java.lang.Object

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

Method Detail

getLHSColumnNames

public static String[] getLHSColumnNames(AssociationType type,
                                         int property,
                                         OuterJoinLoadable lhsPersister,
                                         Mapping mapping)

Get the unqualified names of the columns of the owning entity which are to be used in the join.

Parameters:

type - The association type for the association that represents the join

property - The name of the property that represents the association/join

lhsPersister - The persister for the left-hand side of the association/join

mapping - The mapping (typically the SessionFactory).

Returns:

The unqualified column names.

getLHSColumnNames

public static String[] getLHSColumnNames(AssociationType type,
                                         int property,
                                         int begin,
                                         OuterJoinLoadable lhsPersister,
                                         Mapping mapping)

Get the columns of the owning entity which are to be used in the join

Parameters:

type - The type representing the join

property - The property index for the association type

begin - ?

lhsPersister - The persister for the left-hand-side of the join

mapping - The mapping object (typically the SessionFactory)

Returns:

The columns for the left-hand-side of the join

getLHSTableName

public static String getLHSTableName(AssociationType type,
                                     int propertyIndex,
                                     OuterJoinLoadable lhsPersister)

Determine the name of the table that is the left-hand-side of the join. Usually this is the name of the main table from the left-hand-side persister. But that is not the case with property-refs.

Parameters:

type - The type representing the join

propertyIndex - The property index for the type

lhsPersister - The persister for the left-hand-side of the join

Returns:

The table name

getRHSColumnNames

public static String[] getRHSColumnNames(AssociationType type,
                                         SessionFactoryImplementor factory)

Get the columns of the associated table which are to be used in the join

Parameters:

type - The type

factory - The SessionFactory

Returns:

The columns for the right-hand-side of the join