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

Class TupleFactory.TupleIterator

java.lang.Object

uk.ac.ed.epcc.webapp.jdbc.filter.FilterSelect<T>

uk.ac.ed.epcc.webapp.jdbc.filter.FilterReader<T,O>

uk.ac.ed.epcc.webapp.jdbc.filter.SQLResultIterator<O,O>

uk.ac.ed.epcc.webapp.jdbc.filter.ResultIterator<T>

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

All Implemented Interfaces:

java.lang.AutoCloseable, java.util.Iterator<T>, Contexed, CloseableIterator<T>, Targetted<T>

Enclosing class:

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

public class TupleFactory.TupleIterator
extends ResultIterator<T>

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.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TupleIterator()
	TupleIterator(BaseFilter<T> s)
	TupleIterator(BaseFilter<T> fil, int start, int max)

Method Summary

Modifier and Type	Method and Description
protected void	addSource(java.lang.StringBuilder sb)
protected java.lang.String	getDBTag() Get the tag used to create the connection for this query from a DatabaseService.
boolean	getQualify() Should field names be qualified.
protected java.util.Set<Repository>	getSourceTables()

Methods inherited from class uk.ac.ed.epcc.webapp.jdbc.filter.ResultIterator

iterate, setup, setVisitor

Methods inherited from class uk.ac.ed.epcc.webapp.jdbc.filter.SQLResultIterator

close, fallbackOrder, getChunkSize, hasNext, next, remove, setChunkSize, useChunking

Methods inherited from class uk.ac.ed.epcc.webapp.jdbc.filter.FilterReader

getContext, getFilter, getLockClause, getLogger, getModify, getModifyParameters, getTarget, getTargetParameters, makeDefault, makeEntry, makeSelect, setFilter, setMapper, setQualify, toString

Methods inherited from class uk.ac.ed.epcc.webapp.jdbc.filter.FilterSelect

getFilterArguments, isEmpty, makeWhere, setParams

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Methods inherited from interface java.lang.AutoCloseable

close

Constructor Detail

TupleIterator

protected TupleIterator()

TupleIterator

public TupleIterator(BaseFilter<T> fil,
                     int start,
                     int max)
              throws DataFault

Parameters:

c -

target -

Throws:

DataFault

TupleIterator

public TupleIterator(BaseFilter<T> s)
              throws DataFault

Parameters:

s -

Throws:

DataFault

Method Detail

getDBTag

protected java.lang.String getDBTag()

Description copied from class: FilterReader

Get the tag used to create the connection for this query from a DatabaseService. Normally this just queries the repository for the main table in the query (as this table HAS to take part) and relies on the query failing if there is an illegal join. Any more advanced checking should really be done when constructing the filter as this is where there is a chance to recover from the error.

Specified by:

getDBTag in class FilterReader<T extends TupleFactory.Tuple<A>,T extends TupleFactory.Tuple<A>>

Returns:

addSource

protected void addSource(java.lang.StringBuilder sb)

Specified by:

addSource in class FilterReader<T extends TupleFactory.Tuple<A>,T extends TupleFactory.Tuple<A>>

getQualify

public boolean getQualify()

Description copied from class: FilterReader

Should field names be qualified. Sub-classes can override to force this to true;

Overrides:

getQualify in class FilterReader<T extends TupleFactory.Tuple<A>,T extends TupleFactory.Tuple<A>>

Returns:

boolean true if fields should be qualified

getSourceTables

protected java.util.Set<Repository> getSourceTables()

Specified by:

getSourceTables in class FilterReader<T extends TupleFactory.Tuple<A>,T extends TupleFactory.Tuple<A>>