Package org.apache.drill.exec.expr

Class CloneVisitor

java.lang.Object

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

org.apache.drill.exec.expr.CloneVisitor

All Implemented Interfaces:

ExprVisitor<LogicalExpression,Void,RuntimeException>

public class CloneVisitor
extends AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Creates a deep copy of a LogicalExpression. Specifically, it creates new instances of the literal expressions

Constructor Summary

Constructors

Constructor	Description
CloneVisitor()

Method Summary

Modifier and Type	Method	Description
LogicalExpression	visitBooleanConstant(ValueExpressions.BooleanExpression e, Void value)
LogicalExpression	visitBooleanOperator(BooleanOperator op, Void value)
LogicalExpression	visitCastExpression(CastExpression e, Void value)
LogicalExpression	visitConvertExpression(ConvertExpression e, Void value)
LogicalExpression	visitDateConstant(ValueExpressions.DateExpression intExpr, Void value)
LogicalExpression	visitDecimal18Constant(ValueExpressions.Decimal18Expression decExpr, Void value)
LogicalExpression	visitDecimal28Constant(ValueExpressions.Decimal28Expression decExpr, Void value)
LogicalExpression	visitDecimal38Constant(ValueExpressions.Decimal38Expression decExpr, Void value)
LogicalExpression	visitDecimal9Constant(ValueExpressions.Decimal9Expression decExpr, Void value)
LogicalExpression	visitDoubleConstant(ValueExpressions.DoubleExpression dExpr, Void value)
LogicalExpression	visitFloatConstant(ValueExpressions.FloatExpression fExpr, Void value)
LogicalExpression	visitFunctionCall(FunctionCall call, Void value)
LogicalExpression	visitFunctionHolderExpression(FunctionHolderExpression holder, Void value)
LogicalExpression	visitIfExpression(IfExpression ifExpr, Void value)
LogicalExpression	visitIntConstant(ValueExpressions.IntExpression intExpr, Void value)
LogicalExpression	visitIntervalDayConstant(ValueExpressions.IntervalDayExpression intExpr, Void value)
LogicalExpression	visitIntervalYearConstant(ValueExpressions.IntervalYearExpression intExpr, Void value)
LogicalExpression	visitLongConstant(ValueExpressions.LongExpression intExpr, Void value)
LogicalExpression	visitNullConstant(TypedNullConstant e, Void value)
LogicalExpression	visitNullExpression(NullExpression e, Void value)
LogicalExpression	visitQuotedStringConstant(ValueExpressions.QuotedString e, Void value)
LogicalExpression	visitSchemaPath(SchemaPath path, Void value)
LogicalExpression	visitTimeConstant(ValueExpressions.TimeExpression intExpr, Void value)
LogicalExpression	visitTimeStampConstant(ValueExpressions.TimeStampExpression intExpr, Void value)
LogicalExpression	visitUnknown(LogicalExpression e, Void value)	Handles implementation-specific expressions not known to the visitor structure.
LogicalExpression	visitVarDecimalConstant(ValueExpressions.VarDecimalExpression decExpr, Void value)

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

visitAnyValueExpression, visitParameter, visitTypedFieldExpr

Methods inherited from class java.lang.Object

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

Constructor Details

CloneVisitor

public CloneVisitor()

Method Details

visitFunctionCall

public LogicalExpression visitFunctionCall(FunctionCall call,
 Void value)
                                    throws RuntimeException

Specified by:

visitFunctionCall in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitFunctionCall in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitFunctionHolderExpression

public LogicalExpression visitFunctionHolderExpression(FunctionHolderExpression holder,
 Void value)
                                                throws RuntimeException

Specified by:

visitFunctionHolderExpression in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitFunctionHolderExpression in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitIfExpression

public LogicalExpression visitIfExpression(IfExpression ifExpr,
 Void value)
                                    throws RuntimeException

Specified by:

visitIfExpression in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitIfExpression in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitBooleanOperator

public LogicalExpression visitBooleanOperator(BooleanOperator op,
 Void value)
                                       throws RuntimeException

Specified by:

visitBooleanOperator in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitBooleanOperator in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitSchemaPath

public LogicalExpression visitSchemaPath(SchemaPath path,
 Void value)
                                  throws RuntimeException

Specified by:

visitSchemaPath in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitSchemaPath in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitFloatConstant

public LogicalExpression visitFloatConstant(ValueExpressions.FloatExpression fExpr,
 Void value)
                                     throws RuntimeException

Specified by:

visitFloatConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitFloatConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitIntConstant

public LogicalExpression visitIntConstant(ValueExpressions.IntExpression intExpr,
 Void value)
                                   throws RuntimeException

Specified by:

visitIntConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitIntConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitLongConstant

public LogicalExpression visitLongConstant(ValueExpressions.LongExpression intExpr,
 Void value)
                                    throws RuntimeException

Specified by:

visitLongConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitLongConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitDecimal9Constant

public LogicalExpression visitDecimal9Constant(ValueExpressions.Decimal9Expression decExpr,
 Void value)
                                        throws RuntimeException

Specified by:

visitDecimal9Constant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitDecimal9Constant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitDecimal18Constant

public LogicalExpression visitDecimal18Constant(ValueExpressions.Decimal18Expression decExpr,
 Void value)
                                         throws RuntimeException

Specified by:

visitDecimal18Constant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitDecimal18Constant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitDecimal28Constant

public LogicalExpression visitDecimal28Constant(ValueExpressions.Decimal28Expression decExpr,
 Void value)
                                         throws RuntimeException

Specified by:

visitDecimal28Constant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitDecimal28Constant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitDecimal38Constant

public LogicalExpression visitDecimal38Constant(ValueExpressions.Decimal38Expression decExpr,
 Void value)
                                         throws RuntimeException

Specified by:

visitDecimal38Constant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitDecimal38Constant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitVarDecimalConstant

public LogicalExpression visitVarDecimalConstant(ValueExpressions.VarDecimalExpression decExpr,
 Void value)
                                          throws RuntimeException

Specified by:

visitVarDecimalConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitVarDecimalConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitDateConstant

public LogicalExpression visitDateConstant(ValueExpressions.DateExpression intExpr,
 Void value)
                                    throws RuntimeException

Specified by:

visitDateConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitDateConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitTimeConstant

public LogicalExpression visitTimeConstant(ValueExpressions.TimeExpression intExpr,
 Void value)
                                    throws RuntimeException

Specified by:

visitTimeConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitTimeConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitTimeStampConstant

public LogicalExpression visitTimeStampConstant(ValueExpressions.TimeStampExpression intExpr,
 Void value)
                                         throws RuntimeException

Specified by:

visitTimeStampConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitTimeStampConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitIntervalYearConstant

public LogicalExpression visitIntervalYearConstant(ValueExpressions.IntervalYearExpression intExpr,
 Void value)
                                            throws RuntimeException

Specified by:

visitIntervalYearConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitIntervalYearConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitIntervalDayConstant

public LogicalExpression visitIntervalDayConstant(ValueExpressions.IntervalDayExpression intExpr,
 Void value)
                                           throws RuntimeException

Specified by:

visitIntervalDayConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitIntervalDayConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitDoubleConstant

public LogicalExpression visitDoubleConstant(ValueExpressions.DoubleExpression dExpr,
 Void value)
                                      throws RuntimeException

Specified by:

visitDoubleConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitDoubleConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitBooleanConstant

public LogicalExpression visitBooleanConstant(ValueExpressions.BooleanExpression e,
 Void value)
                                       throws RuntimeException

Specified by:

visitBooleanConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitBooleanConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitQuotedStringConstant

public LogicalExpression visitQuotedStringConstant(ValueExpressions.QuotedString e,
 Void value)
                                            throws RuntimeException

Specified by:

visitQuotedStringConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitQuotedStringConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitCastExpression

public LogicalExpression visitCastExpression(CastExpression e,
 Void value)
                                      throws RuntimeException

Specified by:

visitCastExpression in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitCastExpression in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitConvertExpression

public LogicalExpression visitConvertExpression(ConvertExpression e,
 Void value)
                                         throws RuntimeException

Specified by:

visitConvertExpression in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitConvertExpression in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitNullConstant

public LogicalExpression visitNullConstant(TypedNullConstant e,
 Void value)
                                    throws RuntimeException

Specified by:

visitNullConstant in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitNullConstant in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitNullExpression

public LogicalExpression visitNullExpression(NullExpression e,
 Void value)
                                      throws RuntimeException

Specified by:

visitNullExpression in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitNullExpression in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException

visitUnknown

public LogicalExpression visitUnknown(LogicalExpression e,
 Void value)
                               throws RuntimeException

Description copied from class: AbstractExprVisitor

Handles implementation-specific expressions not known to the visitor structure. Since there are no "visitFoo" methods for these "unknown" expressions, subclassses should use the functionally-equivalent instanceof approach to parse out these "unknown" expressions.

Specified by:

visitUnknown in interface ExprVisitor<LogicalExpression,Void,RuntimeException>

Overrides:

visitUnknown in class AbstractExprVisitor<LogicalExpression,Void,RuntimeException>

Throws:

RuntimeException