Package org.apache.drill.exec.expr.fn.output

Class OutputWidthCalculators.CloneOutputWidthCalculator

java.lang.Object

org.apache.drill.exec.expr.fn.output.OutputWidthCalculators.CloneOutputWidthCalculator

All Implemented Interfaces:

OutputWidthCalculator

Enclosing class:

OutputWidthCalculators

public static class OutputWidthCalculators.CloneOutputWidthCalculator
extends Object
implements OutputWidthCalculator

Field Summary

Fields

Modifier and Type	Field	Description
static final OutputWidthCalculators.CloneOutputWidthCalculator	INSTANCE

Constructor Summary

Constructors

Constructor	Description
CloneOutputWidthCalculator()

Method Summary

Modifier and Type	Method	Description
int	getOutputWidth(List<OutputWidthExpression.FixedLenExpr> args)	Defines a function's output size estimate as the same length as the first argument.

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

public static final OutputWidthCalculators.CloneOutputWidthCalculator INSTANCE

Constructor Details

CloneOutputWidthCalculator

public CloneOutputWidthCalculator()

Method Details

getOutputWidth

public int getOutputWidth(List<OutputWidthExpression.FixedLenExpr> args)

Defines a function's output size estimate as the same length as the first argument. In other words, treats the function as a CLONE function If calculated size is greater than Types.MAX_VARCHAR_LENGTH, it is replaced with Types.MAX_VARCHAR_LENGTH.

Specified by:

getOutputWidth in interface OutputWidthCalculator

Parameters:

args - logical expressions

Returns:

return type