Collaboration diagram for com.cloudera.impala.analysis.SortInfo:

Public Member Functions
	SortInfo (List< Expr > orderingExprs, List< Boolean > isAscOrder, List< Boolean > nullsFirstParams)

void	setMaterializedTupleInfo (TupleDescriptor tupleDesc, List< Expr > tupleSlotExprs)

List< Expr >	getOrderingExprs ()

List< Boolean >	getIsAscOrder ()

List< Boolean >	getNullsFirstParams ()

List< Expr >	getSortTupleSlotExprs ()

TupleDescriptor	getSortTupleDescriptor ()

List< Boolean >	getNullsFirst ()

void	materializeRequiredSlots (Analyzer analyzer, ExprSubstitutionMap smap)

void	substituteOrderingExprs (ExprSubstitutionMap smap, Analyzer analyzer)

void	checkConsistency ()

Private Attributes
List< Expr >	orderingExprs_

final List< Boolean >	isAscOrder_

final List< Boolean >	nullsFirstParams_

TupleDescriptor	sortTupleDesc_

List< Expr >	sortTupleSlotExprs_

Detailed Description

Encapsulates all the information needed to compute ORDER BY This doesn't contain aliases or positional exprs. TODO: reorganize this completely, this doesn't really encapsulate anything; this should move into planner/ and encapsulate the implementation of the sort of a particular input row (materialize all row slots)

Definition at line 29 of file SortInfo.java.

Constructor & Destructor Documentation

com.cloudera.impala.analysis.SortInfo.SortInfo	(	List< Expr >	orderingExprs,
		List< Boolean >	isAscOrder,
		List< Boolean >	nullsFirstParams
	)

inline

Definition at line 41 of file SortInfo.java.

References com.cloudera.impala.analysis.SortInfo.isAscOrder_, com.cloudera.impala.analysis.SortInfo.nullsFirstParams_, and com.cloudera.impala.analysis.SortInfo.orderingExprs_.

Member Function Documentation

void com.cloudera.impala.analysis.SortInfo.checkConsistency ( )

inline

Asserts that all ordering exprs are bound by the sort tuple.

Definition at line 107 of file SortInfo.java.

References com.cloudera.impala.analysis.SortInfo.orderingExprs_.

List<Boolean> com.cloudera.impala.analysis.SortInfo.getIsAscOrder ( )

inline

Definition at line 60 of file SortInfo.java.

References com.cloudera.impala.analysis.SortInfo.isAscOrder_.

Referenced by com.cloudera.impala.planner.SortNode.debugString(), com.cloudera.impala.planner.SortNode.toThrift(), and com.cloudera.impala.planner.ExchangeNode.toThrift().

List<Boolean> com.cloudera.impala.analysis.SortInfo.getNullsFirst ( )

inline

Gets the list of booleans indicating whether nulls come first or last, independent of asc/desc.

Definition at line 69 of file SortInfo.java.

References com.cloudera.impala.analysis.SortInfo.isAscOrder_.

List<Boolean> com.cloudera.impala.analysis.SortInfo.getNullsFirstParams ( )

inline

Definition at line 61 of file SortInfo.java.

References com.cloudera.impala.analysis.SortInfo.nullsFirstParams_.

List<Expr> com.cloudera.impala.analysis.SortInfo.getOrderingExprs ( )

inline

Definition at line 59 of file SortInfo.java.

References com.cloudera.impala.analysis.SortInfo.orderingExprs_.

Referenced by com.cloudera.impala.analysis.SelectStmt.analyzeAggregation(), com.cloudera.impala.planner.SortNode.debugString(), com.cloudera.impala.planner.SortNode.toThrift(), and com.cloudera.impala.planner.ExchangeNode.toThrift().

TupleDescriptor com.cloudera.impala.analysis.SortInfo.getSortTupleDescriptor ( )

inline

Definition at line 63 of file SortInfo.java.

References com.cloudera.impala.analysis.SortInfo.sortTupleDesc_.

Referenced by com.cloudera.impala.planner.SortNode.computeCosts(), and com.cloudera.impala.planner.SortNode.SortNode().

List<Expr> com.cloudera.impala.analysis.SortInfo.getSortTupleSlotExprs ( )

inline

Definition at line 62 of file SortInfo.java.

References com.cloudera.impala.analysis.SortInfo.sortTupleSlotExprs_.

void com.cloudera.impala.analysis.SortInfo.materializeRequiredSlots	(	Analyzer	analyzer,
		ExprSubstitutionMap	smap
	)

inline

Materializes the slots in sortTupleDesc_ referenced in the ordering exprs. Materializes the slots referenced by the corresponding sortTupleSlotExpr after applying the 'smap'.

Definition at line 83 of file SortInfo.java.

References com.cloudera.impala.analysis.SortInfo.orderingExprs_, com.cloudera.impala.analysis.SortInfo.sortTupleDesc_, and com.cloudera.impala.analysis.SortInfo.sortTupleSlotExprs_.