uk.ac.ed.epcc.webapp.model.data

Class TupleFactory<A extends DataObject,AF extends DataObjectFactory<A>,T extends TupleFactory.Tuple<A>>

java.lang.Object

uk.ac.ed.epcc.webapp.AbstractContexed

uk.ac.ed.epcc.webapp.model.data.TupleFactory<A,AF,T>

Type Parameters:

A - type of DataObject

AF - type of DataObjectFactory

T - type of TupleFactory.Tuple

All Implemented Interfaces:

Contexed, Targetted<T>

public class TupleFactory<A extends DataObject,AF extends DataObjectFactory<A>,T extends TupleFactory.Tuple<A>>
extends AbstractContexed
implements Targetted<T>

Factory for sets of DataObjects generated by a join. Each result in the join becomes a tuple. Where a record from one of the contributing tables appears in multiple results from the join it also appears in multiple tuples.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	TupleFactory.AbstractFinder<X>
class	TupleFactory.AcceptFilterConverter An AcceptFilter that forwards onto an AcceptFilter on a member
class	TupleFactory.FilterCounter
class	TupleFactory.FilterExists
protected class	TupleFactory.FilterSet
static class	TupleFactory.Tuple<A extends DataObject>
class	TupleFactory.TupleAndFilter A combination filter for TupleFactory.Tuples Filters on member types can be added
class	TupleFactory.TupleIterator Iterator over TupleFactory.Tuples Run-time type checking on the filters is disabled so SQL filters of either factory (and join expressions) can be used to filter the Tuple.
class	TupleFactory.TupleMapper

Field Summary

Fields inherited from class uk.ac.ed.epcc.webapp.AbstractContexed

conn

Constructor Summary

Constructors

Constructor and Description
TupleFactory(AppContext c, AF... fac)

Method Summary

Modifier and Type	Method and Description
void	addFactory(AF fac)
void	addSource(java.lang.StringBuilder sb)
boolean	exists(BaseFilter<T> s)
long	getCount(BaseFilter<T> s)
java.lang.String	getDBTag()
AF	getFactory(java.lang.String tag)
java.util.Collection<AF>	getMemberFactories() get the component factories of the tuples
java.util.Set<Repository>	getSourceTables()
java.lang.Class<T>	getTarget() Get the type of the returned object as far as it is known.
boolean	hasMemberFactories()
FilterResult<T>	makeResult(BaseFilter<T> f)
FilterResult<T>	makeResult(SQLFilter<? super T> f, int start, int max)
T	makeTuple()

Methods inherited from class uk.ac.ed.epcc.webapp.AbstractContexed

getContext, getLogger, resetLogger

Methods inherited from class java.lang.Object

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

Constructor Detail

TupleFactory

public TupleFactory(AppContext c,
                    AF... fac)

Method Detail

addFactory

public void addFactory(AF fac)

getFactory

public AF getFactory(java.lang.String tag)

Returns:

the a_fac

makeTuple

public T makeTuple()

addSource

public void addSource(java.lang.StringBuilder sb)

getSourceTables

public final java.util.Set<Repository> getSourceTables()

getDBTag

public java.lang.String getDBTag()

makeResult

public FilterResult<T> makeResult(BaseFilter<T> f)
                           throws DataFault

Throws:

DataFault

makeResult

public FilterResult<T> makeResult(SQLFilter<? super T> f,
                                  int start,
                                  int max)
                           throws DataFault

Throws:

DataFault

getCount

public final long getCount(BaseFilter<T> s)
                    throws DataException

Throws:

DataException

exists

public final boolean exists(BaseFilter<T> s)
                     throws DataException

Throws:

DataException

getTarget

public java.lang.Class<T> getTarget()

Description copied from interface: Targetted

Get the type of the returned object as far as it is known. Normally this should be the erasure type corresponding to T.

Specified by:

getTarget in interface Targetted<T extends TupleFactory.Tuple<A>>

Returns:

Class object for return type

getMemberFactories

public java.util.Collection<AF> getMemberFactories()

get the component factories of the tuples

Returns:

hasMemberFactories

public boolean hasMemberFactories()