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

Class DataObjectFactory.ReferenceIterator<I extends Indexed>

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<BDO,I>

uk.ac.ed.epcc.webapp.model.data.DataObjectFactory.ReferenceIterator<I>

Type Parameters:

I - type of referenced object.

All Implemented Interfaces:

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

Enclosing class:

DataObjectFactory<BDO extends DataObject>

public class DataObjectFactory.ReferenceIterator<I extends Indexed>
extends SQLResultIterator<BDO,I>

Iterator that iterates over the set of objects referenced by the targets selected by the filter.

Constructor Summary

Constructors

Constructor and Description
ReferenceIterator(IndexedTypeProducer<I,? extends IndexedProducer<I>> ref, SQLFilter<BDO> fil)

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

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

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

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

getContext, getFilter, getLockClause, getLogger, getModify, getModifyParameters, getQualify, 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

Constructor Detail

ReferenceIterator

public ReferenceIterator(IndexedTypeProducer<I,? extends IndexedProducer<I>> ref,
                         SQLFilter<BDO> fil)
                  throws DataFault

Throws:

DataFault

Method Detail

addSource

protected final void addSource(java.lang.StringBuilder sb)

Specified by:

addSource in class FilterReader<BDO extends DataObject,I extends Indexed>

getSourceTables

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

Specified by:

getSourceTables in class FilterReader<BDO extends DataObject,I extends Indexed>

getDBTag

protected final 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<BDO extends DataObject,I extends Indexed>

Returns: