Package org.apache.cassandra.index.sasi.plan

Class QueryController

java.lang.Object

org.apache.cassandra.index.sasi.plan.QueryController

public class QueryController
extends Object

Constructor Summary

Constructors

Constructor	Description
QueryController(ColumnFamilyStore cfs, ReadCommand command, long timeQuotaMs)

Method Summary

Modifier and Type	Method	Description
void	checkpoint()
DataRange	dataRange()
void	finish()
Collection<RowFilter.Expression>	getExpressions()
ColumnIndex	getIndex(RowFilter.Expression expression)
RangeIterator.Builder<Long,Token>	getIndexes(Operation.OperationType op, Collection<Expression> expressions)	Build a range iterator from the given list of expressions by applying given operation (OR/AND).
AbstractType<?>	getKeyValidator()
UnfilteredRowIterator	getPartition(DecoratedKey key, ReadExecutionController executionController)
TableMetadata	metadata()
void	releaseIndexes(Operation operation)

Methods inherited from class java.lang.Object

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

Constructor Details

QueryController

public QueryController(ColumnFamilyStore cfs,
 ReadCommand command,
 long timeQuotaMs)

Method Details

metadata

public TableMetadata metadata()

getExpressions

public Collection<RowFilter.Expression> getExpressions()

dataRange

public DataRange dataRange()

getKeyValidator

public AbstractType<?> getKeyValidator()

getIndex

@Nullable
public ColumnIndex getIndex(RowFilter.Expression expression)

getPartition

public UnfilteredRowIterator getPartition(DecoratedKey key,
 ReadExecutionController executionController)

getIndexes

public RangeIterator.Builder<Long,Token> getIndexes(Operation.OperationType op,
 Collection<Expression> expressions)

Build a range iterator from the given list of expressions by applying given operation (OR/AND). Building of such iterator involves index search, results of which are persisted in the internal resources list and can be released later via releaseIndexes(Operation).

Parameters:

op - The operation type to coalesce expressions with.

expressions - The expressions to build range iterator from (expressions with not results are ignored).

Returns:

The range builder based on given expressions and operation type.

checkpoint

public void checkpoint()

releaseIndexes

public void releaseIndexes(Operation operation)

finish

public void finish()