Package org.apache.calcite.rex

Class RexUtil.SubQueryFinder

java.lang.Object

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

org.apache.calcite.rex.RexUtil.SubQueryFinder

All Implemented Interfaces:

RexVisitor<java.lang.Void>

Enclosing class:

RexUtil

public static class RexUtil.SubQueryFinder
extends RexVisitorImpl<java.lang.Void>

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

Field Summary

Fields

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

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

deep

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SubQueryFinder()

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 RexSubQuery	find(java.lang.Iterable<RexNode> nodes)
static RexSubQuery	find(RexNode node)
java.lang.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

Field Detail

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 java.util.function.Predicate<Filter> FILTER_PREDICATE

Deprecated.

JOIN_PREDICATE

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

Deprecated.

Constructor Detail

SubQueryFinder

private SubQueryFinder()

Method Detail

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 java.lang.Void visitSubQuery(RexSubQuery subQuery)

Specified by:

visitSubQuery in interface RexVisitor<java.lang.Void>

Overrides:

visitSubQuery in class RexVisitorImpl<java.lang.Void>

find

public static RexSubQuery find(java.lang.Iterable<RexNode> nodes)

find

public static RexSubQuery find(RexNode node)