Package io.higson.runtime.builtin.implementation

Class IsBlankUtilFunction

java.lang.Object

io.higson.runtime.builtin.implementation.UtilFunction

io.higson.runtime.builtin.implementation.IsBlankUtilFunction

All Implemented Interfaces:

ContextualUtilFunction

public class IsBlankUtilFunction
extends UtilFunction
implements ContextualUtilFunction

This class represents a utility function for checking a value from the Higson context is blank.

This class provides a call method that takes in a HigsonContext and an array of arguments.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CODE
static final UtilFunction	INSTANCE

Fields inherited from class io.higson.runtime.builtin.implementation.UtilFunction

converter

Constructor Summary

Constructors

Constructor	Description
IsBlankUtilFunction()

Method Summary

Modifier and Type	Method	Description
Object	call(HigsonContext ctx, Object[] args)	This method checks if a value from the Higson context is blank.

Methods inherited from class io.higson.runtime.builtin.implementation.UtilFunction

createHigsonRuntimeException, createHigsonRuntimeException, isValid, toTemporalAmount

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.higson.runtime.builtin.implementation.ContextualUtilFunction

getContextPath

Field Details

CODE

public static final String CODE

See Also:

• Constant Field Values

INSTANCE

public static final UtilFunction INSTANCE

Constructor Details

IsBlankUtilFunction

public IsBlankUtilFunction()

Method Details

call

public Object call(HigsonContext ctx,
 Object[] args)

This method checks if a value from the Higson context is blank.
This method considers an object blank if it meets one of the following conditions:

• It is null
• It is the string "undefined" (specific to the Rhino JavaScript engine)
• It is an instance of ParamValue and its isBlank method returns true
• It is an instance of RhinoParamValue and its isBlank method returns true
• It is an instance of MultiValue and its isBlank method returns true
• It is an instance of ValueHolder and its isBlank method returns true
• It is an instance of Collection and it is empty or all its elements are blank
• It is an array and all its elements are blank
• It is an instance of Map and all its values are blank
• It is a CharSequence (like String, StringBuffer, etc.) and is blank according to the StrUtil.isBlank method
• It is an instance of Iterable and it is empty or all its elements are blank

Specified by:

call in class UtilFunction

Returns:

true if the object is blank, false otherwise