Package org.apache.druid.math.expr

Class Evals

java.lang.Object

org.apache.druid.math.expr.Evals

public class Evals
extends Object

Constructor Summary

Constructors

Constructor	Description
Evals()

Method Summary

Modifier and Type	Method	Description
static boolean	asBoolean(double x)
static boolean	asBoolean(long x)
static boolean	asBoolean(String x)
static double	asDouble(boolean x)
static long	asLong(boolean x)
static String	asString(Object o)	Call Object.toString() on a non-null value
static boolean	isAllConstants(List<Expr> exprs)
static boolean	isAllConstants(Expr... exprs)
static boolean	objectAsBoolean(Object val)	Best effort try to turn a value into a boolean: Boolean will be passed directly through String will use asBoolean(String) Long will use asBoolean(long) Number will use asBoolean(double) everything else, including null will be false

Methods inherited from class java.lang.Object

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

Constructor Detail

Evals

public Evals()

Method Detail

isAllConstants

public static boolean isAllConstants(Expr... exprs)

isAllConstants

public static boolean isAllConstants(List<Expr> exprs)

asLong

public static long asLong(boolean x)

asDouble

public static double asDouble(boolean x)

asBoolean

public static boolean asBoolean(long x)

asBoolean

public static boolean asBoolean(double x)

asBoolean

public static boolean asBoolean(@Nullable
                                String x)

objectAsBoolean

public static boolean objectAsBoolean(@Nullable
                                      Object val)

Best effort try to turn a value into a boolean: Boolean will be passed directly through String will use asBoolean(String) Long will use asBoolean(long) Number will use asBoolean(double) everything else, including null will be false

asString

@Nullable
public static String asString(@Nullable
                              Object o)

Call Object.toString() on a non-null value