Package org.apache.calcite.rex

Class RexUtil.SubQueryFinder

java.lang.Object

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

org.apache.calcite.rex.RexUtil.SubQueryFinder

All Implemented Interfaces:

RexVisitor<Void>

Enclosing class:

RexUtil

public static class RexUtil.SubQueryFinder
extends RexVisitorImpl<Void>

Visitor that throws Util.FoundOne if applied to an expression that contains a RexSubQuery.

Field Summary

Fields

Modifier and Type	Field	Description
static final Predicate<Filter>	FILTER_PREDICATE	Deprecated.
static final RexUtil.SubQueryFinder	INSTANCE
static final com.google.common.base.Predicate<Join>	JOIN_PREDICATE	Deprecated.
static final com.google.common.base.Predicate<Project>	PROJECT_PREDICATE	Deprecated.

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

deep

Method Summary

Modifier and Type	Method	Description
static boolean	containsSubQuery(Filter filter)	Returns whether a Filter contains a sub-query.
static boolean	containsSubQuery(Join join)	Returns whether a Join contains a sub-query.
static boolean	containsSubQuery(Project project)	Returns whether a Project contains a sub-query.
static @Nullable RexSubQuery	find(Iterable<RexNode> nodes)
static @Nullable RexSubQuery	find(RexNode node)
Void	visitSubQuery(RexSubQuery subQuery)

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

visitArrayAnd, visitArrayOr, visitCall, visitCorrelVariable, visitDynamicParam, visitFieldAccess, visitInputRef, visitLiteral, visitLocalRef, 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

Field Details

INSTANCE

public static final RexUtil.SubQueryFinder INSTANCE

PROJECT_PREDICATE

@Deprecated
public static final com.google.common.base.Predicate<Project> PROJECT_PREDICATE

Deprecated.

FILTER_PREDICATE

@Deprecated
public static final Predicate<Filter> FILTER_PREDICATE

Deprecated.

JOIN_PREDICATE

@Deprecated
public static final com.google.common.base.Predicate<Join> JOIN_PREDICATE

Deprecated.

Method Details

containsSubQuery

public static boolean containsSubQuery(Project project)

Returns whether a Project contains a sub-query.

containsSubQuery

public static boolean containsSubQuery(Filter filter)

Returns whether a Filter contains a sub-query.

containsSubQuery

public static boolean containsSubQuery(Join join)

Returns whether a Join contains a sub-query.

visitSubQuery

public Void visitSubQuery(RexSubQuery subQuery)

Specified by:

visitSubQuery in interface RexVisitor<Void>

Overrides:

visitSubQuery in class RexVisitorImpl<Void>

find

public static @Nullable RexSubQuery find(Iterable<RexNode> nodes)

find

public static @Nullable RexSubQuery find(RexNode node)