Package org.apache.drill.exec.planner.index

Class ExprToRex

java.lang.Object

org.apache.drill.common.expression.visitors.AbstractExprVisitor<org.apache.calcite.rex.RexNode,Void,RuntimeException>

org.apache.drill.exec.planner.index.ExprToRex

All Implemented Interfaces:

ExprVisitor<org.apache.calcite.rex.RexNode,Void,RuntimeException>

public class ExprToRex
extends AbstractExprVisitor<org.apache.calcite.rex.RexNode,Void,RuntimeException>

Convert a logicalExpression to RexNode, notice the inputRel could be in an old plan, but newRowType is the newly built rowType that the new RexNode will be applied upon, so when reference fields, use newRowType, when need cluster, plannerSetting, etc, use old inputRel

Constructor Summary

Constructors

Constructor	Description
ExprToRex(org.apache.calcite.rel.RelNode inputRel, org.apache.calcite.rel.type.RelDataType newRowType, org.apache.calcite.rex.RexBuilder builder)

Method Summary

Modifier and Type	Method	Description
static org.apache.calcite.rel.type.RelDataTypeField	findField(String fieldName, org.apache.calcite.rel.type.RelDataType rowType)
org.apache.calcite.rex.RexNode	visitCastExpression(CastExpression e, Void value)
org.apache.calcite.rex.RexNode	visitSchemaPath(SchemaPath path, Void value)

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

visitAnyValueExpression, visitBooleanConstant, visitBooleanOperator, visitConvertExpression, visitDateConstant, visitDecimal18Constant, visitDecimal28Constant, visitDecimal38Constant, visitDecimal9Constant, visitDoubleConstant, visitFloatConstant, visitFunctionCall, visitFunctionHolderExpression, visitIfExpression, visitIntConstant, visitIntervalDayConstant, visitIntervalYearConstant, visitLongConstant, visitNullConstant, visitNullExpression, visitParameter, visitQuotedStringConstant, visitTimeConstant, visitTimeStampConstant, visitTypedFieldExpr, visitUnknown, visitVarDecimalConstant

Methods inherited from class java.lang.Object

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

Constructor Details

ExprToRex

public ExprToRex(org.apache.calcite.rel.RelNode inputRel,
 org.apache.calcite.rel.type.RelDataType newRowType,
 org.apache.calcite.rex.RexBuilder builder)

Method Details

findField

public static org.apache.calcite.rel.type.RelDataTypeField findField(String fieldName,
 org.apache.calcite.rel.type.RelDataType rowType)

visitSchemaPath

public org.apache.calcite.rex.RexNode visitSchemaPath(SchemaPath path,
 Void value)
                                               throws RuntimeException

Specified by:

visitSchemaPath in interface ExprVisitor<org.apache.calcite.rex.RexNode,Void,RuntimeException>

Overrides:

visitSchemaPath in class AbstractExprVisitor<org.apache.calcite.rex.RexNode,Void,RuntimeException>

Throws:

RuntimeException

visitCastExpression

public org.apache.calcite.rex.RexNode visitCastExpression(CastExpression e,
 Void value)
                                                   throws RuntimeException

Specified by:

visitCastExpression in interface ExprVisitor<org.apache.calcite.rex.RexNode,Void,RuntimeException>

Overrides:

visitCastExpression in class AbstractExprVisitor<org.apache.calcite.rex.RexNode,Void,RuntimeException>

Throws:

RuntimeException