org.apache.drill.exec.physical.base

Enum ScanStats.GroupScanProperty

java.lang.Object

java.lang.Enum<ScanStats.GroupScanProperty>

org.apache.drill.exec.physical.base.ScanStats.GroupScanProperty

All Implemented Interfaces:

Serializable, Comparable<ScanStats.GroupScanProperty>

Enclosing class:

ScanStats

public static enum ScanStats.GroupScanProperty
extends Enum<ScanStats.GroupScanProperty>

Enum Constant Summary

Enum Constants

Enum Constant and Description
ESTIMATED_TOTAL_COST Tells the planner to consider the full cost represented here.
EXACT_ROW_COUNT
NO_EXACT_ROW_COUNT

Method Summary

Modifier and Type	Method and Description
boolean	hasExactColumnValueCount()
boolean	hasExactRowCount()
boolean	hasFullCost()
static ScanStats.GroupScanProperty	valueOf(String name) Returns the enum constant of this type with the specified name.
static ScanStats.GroupScanProperty[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

NO_EXACT_ROW_COUNT

public static final ScanStats.GroupScanProperty NO_EXACT_ROW_COUNT

EXACT_ROW_COUNT

public static final ScanStats.GroupScanProperty EXACT_ROW_COUNT

ESTIMATED_TOTAL_COST

public static final ScanStats.GroupScanProperty ESTIMATED_TOTAL_COST

Tells the planner to consider the full cost represented here. Else, the planner only looks at row count. However, we don't know the actual row count, a COUNT(*) query must still look at the input source if it wants an accurate count.

Method Detail

values

public static ScanStats.GroupScanProperty[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ScanStats.GroupScanProperty c : ScanStats.GroupScanProperty.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ScanStats.GroupScanProperty valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

hasExactRowCount

public boolean hasExactRowCount()

hasExactColumnValueCount

public boolean hasExactColumnValueCount()

hasFullCost

public boolean hasFullCost()