org.teiid.query.processor.relational

Class DependentValueSource

java.lang.Object

org.teiid.query.processor.relational.DependentValueSource

All Implemented Interfaces:

ValueIteratorSource

public class DependentValueSource
extends Object
implements ValueIteratorSource

Constructor Summary

Constructors

Constructor and Description
DependentValueSource(TupleBuffer tb)
DependentValueSource(TupleBuffer tb, List<? extends Expression> schema)

Method Summary

Modifier and Type	Method and Description
Set<Object>	getCachedSet(Expression valueExpression)
List<? extends Expression>	getSchema()
TupleBuffer	getTupleBuffer()
org.teiid.query.processor.relational.TupleSourceValueIterator	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 tb)

DependentValueSource

public DependentValueSource(TupleBuffer tb,
                            List<? extends Expression> schema)

Method Detail

getTupleBuffer

public TupleBuffer getTupleBuffer()

getValueIterator

public org.teiid.query.processor.relational.TupleSourceValueIterator 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 Set<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)

getSchema

public List<? extends Expression> getSchema()