Package com.api.jsonata4java.expressions.functions

Class BooleanFunction

java.lang.Object

com.api.jsonata4java.expressions.functions.FunctionBase

com.api.jsonata4java.expressions.functions.BooleanFunction

public class BooleanFunction
extends FunctionBase

From http://docs.jsonata.org/boolean-functions.html

$boolean(arg)

Casts the argument to a Boolean using the following rules

Argument type	Result
Boolean	unchanged
string: empty	false
string: non-empty	true
number: 0	false
number: non-zero	true
null	false
array: empty	false
array: contains a member that casts to true	true
array: all members cast to false	false
object: empty	false
object: non-empty	true
function: (functions are not currently supported)	false

Nested Class Summary

Nested classes/interfaces inherited from class com.api.jsonata4java.expressions.functions.FunctionBase

FunctionBase.CtxEvalResult

Field Summary

Fields

Modifier and Type	Field	Description
static String	ERR_ARG2BADTYPE
static String	ERR_BAD_CONTEXT

Constructor Summary

Constructors

Constructor	Description
BooleanFunction()

Method Summary

Modifier and Type	Method	Description
int	getMaxArgs()
int	getMinArgs()
String	getSignature()
com.fasterxml.jackson.databind.JsonNode	invoke(ExpressionsVisitor expressionVisitor, MappingExpressionParser.Function_callContext ctx)

Methods inherited from class com.api.jsonata4java.expressions.functions.FunctionBase

evalContext, getArgumentCount, getFunctionName

Methods inherited from class java.lang.Object

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

Field Detail

ERR_BAD_CONTEXT

public static String ERR_BAD_CONTEXT

ERR_ARG2BADTYPE

public static String ERR_ARG2BADTYPE

Constructor Detail

BooleanFunction

public BooleanFunction()

Method Detail

invoke

public com.fasterxml.jackson.databind.JsonNode invoke(ExpressionsVisitor expressionVisitor,
                                                      MappingExpressionParser.Function_callContext ctx)

Specified by:

invoke in class FunctionBase

getMaxArgs

public int getMaxArgs()

Specified by:

getMaxArgs in class FunctionBase

getMinArgs

public int getMinArgs()

Specified by:

getMinArgs in class FunctionBase

getSignature

public String getSignature()

Specified by:

getSignature in class FunctionBase