org.teiid.query.processor.relational
Class DependentValueSource

java.lang.Object
  org.teiid.query.processor.relational.DependentValueSource

All Implemented Interfaces:

ValueIteratorSource

public class DependentValueSource
extends java.lang.Object
implements ValueIteratorSource

Constructor Summary

DependentValueSource(TupleBuffer tupleSourceID)

Method Summary

java.util.Set<java.lang.Object>	getCachedSet(Expression valueExpression)
TupleBuffer	getTupleBuffer()
ValueIterator	getValueIterator(Expression valueExpression) Attempt to obtain a ValueIterator from this source.
boolean	isDistinct()
boolean	isUnused()
void	setDistinct(boolean distinct)
void	setUnused(boolean unused)

Methods inherited from class java.lang.Object

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

Constructor Detail

DependentValueSource

public DependentValueSource(TupleBuffer tupleSourceID)

Method Detail

getTupleBuffer

public TupleBuffer getTupleBuffer()

getValueIterator

public ValueIterator getValueIterator(Expression valueExpression)
                               throws TeiidComponentException

Description copied from interface: ValueIteratorSource

Attempt to obtain a ValueIterator from this source. If the iterator is not ready yet, return null to indicate that.

Specified by:

getValueIterator in interface ValueIteratorSource

Parameters:

valueExpression - The expression we are retrieving an iterator for

Returns:

ValueIterator if ready, null otherwise

Throws:

TeiidComponentException

See Also:

ValueIteratorSource.getValueIterator(org.teiid.query.sql.symbol.Expression)

getCachedSet

public java.util.Set<java.lang.Object> getCachedSet(Expression valueExpression)
                                             throws TeiidComponentException,
                                                    TeiidProcessingException

Specified by:

getCachedSet in interface ValueIteratorSource

Throws:

TeiidComponentException

TeiidProcessingException

isUnused

public boolean isUnused()

Specified by:

isUnused in interface ValueIteratorSource

setUnused

public void setUnused(boolean unused)

Specified by:

setUnused in interface ValueIteratorSource

isDistinct

public boolean isDistinct()

setDistinct

public void setDistinct(boolean distinct)