org.apache.drill.exec.store.parquet

Class ParquetRGFilterEvaluator.FieldReferenceFinder

java.lang.Object

org.apache.drill.common.expression.visitors.AbstractExprVisitor<Set<SchemaPath>,Void,RuntimeException>

org.apache.drill.exec.store.parquet.ParquetRGFilterEvaluator.FieldReferenceFinder

All Implemented Interfaces:

ExprVisitor<Set<SchemaPath>,Void,RuntimeException>

Enclosing class:

ParquetRGFilterEvaluator

public static class ParquetRGFilterEvaluator.FieldReferenceFinder
extends AbstractExprVisitor<Set<SchemaPath>,Void,RuntimeException>

Search through a LogicalExpression, finding all internal schema path references and returning them in a set.

Constructor Summary

Constructors

Constructor and Description
ParquetRGFilterEvaluator.FieldReferenceFinder()

Method Summary

Methods

Modifier and Type	Method and Description
Set<SchemaPath>	visitSchemaPath(SchemaPath path, Void value)
Set<SchemaPath>	visitUnknown(LogicalExpression e, Void value)

Methods inherited from class org.apache.drill.common.expression.visitors.AbstractExprVisitor

visitBooleanConstant, visitBooleanOperator, visitCastExpression, visitConvertExpression, visitDateConstant, visitDecimal18Constant, visitDecimal28Constant, visitDecimal38Constant, visitDecimal9Constant, visitDoubleConstant, visitFloatConstant, visitFunctionCall, visitFunctionHolderExpression, visitIfExpression, visitIntConstant, visitIntervalDayConstant, visitIntervalYearConstant, visitLongConstant, visitNullConstant, visitNullExpression, visitQuotedStringConstant, visitTimeConstant, visitTimeStampConstant

Methods inherited from class java.lang.Object

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

Constructor Detail

ParquetRGFilterEvaluator.FieldReferenceFinder

public ParquetRGFilterEvaluator.FieldReferenceFinder()

Method Detail

visitSchemaPath

public Set<SchemaPath> visitSchemaPath(SchemaPath path,
                              Void value)

Specified by:

visitSchemaPath in interface ExprVisitor<Set<SchemaPath>,Void,RuntimeException>

Overrides:

visitSchemaPath in class AbstractExprVisitor<Set<SchemaPath>,Void,RuntimeException>

visitUnknown

public Set<SchemaPath> visitUnknown(LogicalExpression e,
                           Void value)

Specified by:

visitUnknown in interface ExprVisitor<Set<SchemaPath>,Void,RuntimeException>

Overrides:

visitUnknown in class AbstractExprVisitor<Set<SchemaPath>,Void,RuntimeException>