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 and Description
static OutputWidthCalculators.CloneOutputWidthCalculator	INSTANCE

Constructor Summary

Constructors

Constructor and Description
CloneOutputWidthCalculator()

Method Summary

Modifier and Type	Method and 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 Detail

INSTANCE

public static final OutputWidthCalculators.CloneOutputWidthCalculator INSTANCE

Constructor Detail

CloneOutputWidthCalculator

public CloneOutputWidthCalculator()

Method Detail

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