Module org.tentackle.persistence

Package org.tentackle.persist

Class JoinedSelect<T extends PersistentDomainObject<T>>

java.lang.Object

org.tentackle.persist.JoinedSelect<T>

Type Parameters:

T - the primary PDO type

public class JoinedSelect<T extends PersistentDomainObject<T>>
extends Object

A joined select.

Author:

harald

Constructor Summary

Constructors

Constructor	Description
JoinedSelect()	Creates a joined select.
JoinedSelect(List<Join<? super T,?>> joins)	Creates a joined select from a list of joins.

Method Summary

Modifier and Type	Method	Description
JoinedSelect<T>	addJoin(Join<? super T,?> join)	Adds a join.
void	createJoinedSql(T pdo, StringBuilder selectSql)	Creates the SQL-code that does the joined select.
T	currentPdo()	Gets the currently retrieved PDO.
List<Join<? super T,?>>	getJoins()	Gets the joins.
T	getLastPdo()	Gets the PDO retrieved before the current PDO.
void	initialize(List<T> list)	Initializes the joined select.
T	nextPdo(T pdo)	Finishes the current pdo and switches to the next.

Methods inherited from class java.lang.Object

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

Constructor Details

JoinedSelect

public JoinedSelect()

Creates a joined select.

JoinedSelect

public JoinedSelect(List<Join<? super T,?>> joins)

Creates a joined select from a list of joins.

Parameters:

joins - the joins

Method Details

addJoin

public JoinedSelect<T> addJoin(Join<? super T,?> join)

Adds a join.

Parameters:

join - the join

Returns:

me (to allow fluent style setup)

getJoins

public List<Join<? super T,?>> getJoins()

Gets the joins.

Returns:

the joins

createJoinedSql

public void createJoinedSql(T pdo,
 StringBuilder selectSql)

Creates the SQL-code that does the joined select.

Parameters:

pdo - the pdo proxy

selectSql - the select builder without joins

getLastPdo

public T getLastPdo()

Gets the PDO retrieved before the current PDO.

Returns:

the last pdo

currentPdo

public T currentPdo()

Gets the currently retrieved PDO.

Returns:

the pdo, null if no query running

nextPdo

public T nextPdo(T pdo)

Finishes the current pdo and switches to the next.

Parameters:

pdo - the next pdo

Returns:

the pdo possibly changed if already in list

initialize

public void initialize(List<T> list)

Initializes the joined select.

Parameters:

list - the list if select to list