Package org.apache.calcite.plan

Class RelOptUtil.InputFinder

java.lang.Object

org.apache.calcite.rex.RexVisitorImpl<Void>

org.apache.calcite.plan.RelOptUtil.InputFinder

All Implemented Interfaces:

RexVisitor<Void>

Enclosing class:

RelOptUtil

public static class RelOptUtil.InputFinder
extends RexVisitorImpl<Void>

Visitor which builds a bitmap of the inputs used by an expression.

Field Summary

Fields inherited from class org.apache.calcite.rex.RexVisitorImpl

deep

Constructor Summary

Constructors

Constructor	Description
InputFinder()
InputFinder(@Nullable Set<RelDataTypeField> extraFields)
InputFinder(@Nullable Set<RelDataTypeField> extraFields, ImmutableBitSet initialBits)

Method Summary

Modifier and Type	Method	Description
static RelOptUtil.InputFinder	analyze(RexNode node)	Returns an input finder that has analyzed a given expression.
static RelOptUtil.InputFinder	analyze(RexNode node, Set<CorrelationId> localCorrelationIds)	Returns an input finder that has analyzed a given expression, treating localCorrelationIds as the set of correlation ids bound by the current scope.
static ImmutableBitSet	bits(List<RexNode> exprs, @Nullable RexNode expr)	Returns a bit set describing the inputs used by a collection of project expressions and an optional condition.
static ImmutableBitSet	bits(RexNode node)	Returns a bit set describing the inputs used by an expression.
ImmutableBitSet	build()	Returns the bit set.
Void	visitCall(RexCall call)
Void	visitInputRef(RexInputRef inputRef)
Void	visitSubQuery(RexSubQuery subQuery)

Methods inherited from class org.apache.calcite.rex.RexVisitorImpl

visitArrayAnd, visitArrayOr, visitCorrelVariable, visitDynamicParam, visitFieldAccess, visitLambda, visitLambdaRef, visitLiteral, visitLocalRef, visitNodeAndFieldIndex, visitOver, visitPatternFieldRef, visitRangeRef, visitTableInputRef

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rex.RexVisitor

visitEach, visitList, visitList

Constructor Details

InputFinder

public InputFinder()

InputFinder

public InputFinder(@Nullable Set<RelDataTypeField> extraFields)

InputFinder

public InputFinder(@Nullable Set<RelDataTypeField> extraFields,
 ImmutableBitSet initialBits)

Method Details

analyze

public static RelOptUtil.InputFinder analyze(RexNode node)

Returns an input finder that has analyzed a given expression.

analyze

public static RelOptUtil.InputFinder analyze(RexNode node,
 Set<CorrelationId> localCorrelationIds)

Returns an input finder that has analyzed a given expression, treating localCorrelationIds as the set of correlation ids bound by the current scope. For each nested RexSubQuery, any correlation id used inside it that belongs to this set contributes its correlationColumns indices to the bitmap; correlation ids bound by an outer scope are ignored, because their indices are relative to a foreign row type and would otherwise alias onto unrelated columns of the current scope.

bits

public static ImmutableBitSet bits(RexNode node)

Returns a bit set describing the inputs used by an expression.

bits

public static ImmutableBitSet bits(List<RexNode> exprs,
 @Nullable RexNode expr)

Returns a bit set describing the inputs used by a collection of project expressions and an optional condition.

build

public ImmutableBitSet build()

Returns the bit set.

After calling this method, you cannot do any more visits or call this method again.

visitInputRef

public Void visitInputRef(RexInputRef inputRef)

Specified by:

visitInputRef in interface RexVisitor<Void>

Overrides:

visitInputRef in class RexVisitorImpl<Void>

visitCall

public Void visitCall(RexCall call)

Specified by:

visitCall in interface RexVisitor<Void>

Overrides:

visitCall in class RexVisitorImpl<Void>

visitSubQuery

public Void visitSubQuery(RexSubQuery subQuery)

Specified by:

visitSubQuery in interface RexVisitor<Void>

Overrides:

visitSubQuery in class RexVisitorImpl<Void>