Package org.apache.calcite.rex

Class RexVisitorImpl<R>

java.lang.Object

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

Type Parameters:

R - Return type from each visitXxx method.

All Implemented Interfaces:

RexVisitor<R>

Direct Known Subclasses:

ReduceExpressionsRule.ReducibleExprLocator, RelOptUtil.InputFinder, RexChecker, RexUtil.FieldAccessFinder, RexUtil.RexFinder, RexUtil.SubQueryFinder

public class RexVisitorImpl<@Nullable R>
extends Object
implements RexVisitor<R>

Default implementation of RexVisitor, which visits each node but does nothing while it's there.

Field Summary

Fields

Modifier and Type	Field	Description
protected final boolean	deep

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	RexVisitorImpl(boolean deep)

Method Summary

Modifier and Type	Method	Description
static boolean	visitArrayAnd(RexVisitor<Boolean> visitor, List<RexNode> exprs)	Visits an array of expressions, returning the logical 'and' of their results.
static boolean	visitArrayOr(RexVisitor<Boolean> visitor, List<RexNode> exprs)	Visits an array of expressions, returning the logical 'or' of their results.
R	visitCall(RexCall call)
R	visitCorrelVariable(RexCorrelVariable correlVariable)
R	visitDynamicParam(RexDynamicParam dynamicParam)
R	visitFieldAccess(RexFieldAccess fieldAccess)
R	visitInputRef(RexInputRef inputRef)
R	visitLiteral(RexLiteral literal)
R	visitLocalRef(RexLocalRef localRef)
R	visitOver(RexOver over)
R	visitPatternFieldRef(RexPatternFieldRef fieldRef)
R	visitRangeRef(RexRangeRef rangeRef)
R	visitSubQuery(RexSubQuery subQuery)
R	visitTableInputRef(RexTableInputRef ref)

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

deep

protected final boolean deep

Constructor Details

RexVisitorImpl

protected RexVisitorImpl(boolean deep)

Method Details

visitInputRef

public R visitInputRef(RexInputRef inputRef)

Specified by:

visitInputRef in interface RexVisitor<R>

visitLocalRef

public R visitLocalRef(RexLocalRef localRef)

Specified by:

visitLocalRef in interface RexVisitor<R>

visitLiteral

public R visitLiteral(RexLiteral literal)

Specified by:

visitLiteral in interface RexVisitor<R>

visitOver

public R visitOver(RexOver over)

Specified by:

visitOver in interface RexVisitor<R>

visitCorrelVariable

public R visitCorrelVariable(RexCorrelVariable correlVariable)

Specified by:

visitCorrelVariable in interface RexVisitor<R>

visitCall

public R visitCall(RexCall call)

Specified by:

visitCall in interface RexVisitor<R>

visitDynamicParam

public R visitDynamicParam(RexDynamicParam dynamicParam)

Specified by:

visitDynamicParam in interface RexVisitor<R>

visitRangeRef

public R visitRangeRef(RexRangeRef rangeRef)

Specified by:

visitRangeRef in interface RexVisitor<R>

visitFieldAccess

public R visitFieldAccess(RexFieldAccess fieldAccess)

Specified by:

visitFieldAccess in interface RexVisitor<R>

visitSubQuery

public R visitSubQuery(RexSubQuery subQuery)

Specified by:

visitSubQuery in interface RexVisitor<R>

visitTableInputRef

public R visitTableInputRef(RexTableInputRef ref)

Specified by:

visitTableInputRef in interface RexVisitor<R>

visitPatternFieldRef

public R visitPatternFieldRef(RexPatternFieldRef fieldRef)

Specified by:

visitPatternFieldRef in interface RexVisitor<R>

visitArrayAnd

public static boolean visitArrayAnd(RexVisitor<Boolean> visitor,
 List<RexNode> exprs)

Visits an array of expressions, returning the logical 'and' of their results.

If any of them returns false, returns false immediately; if they all return true, returns true.

See Also:

• visitArrayOr(org.apache.calcite.rex.RexVisitor<java.lang.Boolean>, java.util.List<org.apache.calcite.rex.RexNode>)
• RexShuttle.visitArray(org.apache.calcite.rex.RexNode[], boolean[])

visitArrayOr

public static boolean visitArrayOr(RexVisitor<Boolean> visitor,
 List<RexNode> exprs)

Visits an array of expressions, returning the logical 'or' of their results.

If any of them returns true, returns true immediately; if they all return false, returns false.

See Also:

• visitArrayAnd(org.apache.calcite.rex.RexVisitor<java.lang.Boolean>, java.util.List<org.apache.calcite.rex.RexNode>)
• RexShuttle.visitArray(org.apache.calcite.rex.RexNode[], boolean[])