fr.softsf.canscan.util.Checker Enum Reference

Centralized argument validation utility for detecting and reporting null or blank values. More...

Collaboration diagram for fr.softsf.canscan.util.Checker:

Public Member Functions
boolean	checkNPE (Object obj, String methodName, String name)
	Performs a non-blocking null or blank check and triggers a diagnostic dialog upon failure.

Public Attributes
	INSTANCE

Private Member Functions
boolean	checkNullOrBlankInternal (Object obj, String methodName, String name)
	Validates the given object for null or blank values.

Detailed Description

Centralized argument validation utility for detecting and reporting null or blank values.

Implemented as an enum singleton to ensure a single shared instance. Designed for defensive programming and consistent user feedback through standardized error dialogs.

Member Function Documentation

checkNPE()

boolean fr.softsf.canscan.util.Checker.checkNPE	(	Object	obj,
		String	methodName,
		String	name )

Performs a non-blocking null or blank check and triggers a diagnostic dialog upon failure.

Note: This method does not throw exceptions. Callers must handle the boolean return value to ensure thread safety and prevent downstream NullPointerException. *

Execution Patterns:

• Standard guard clause: if (Checker.INSTANCE.checkNPE(arg, "method", "arg"))
return;
• Constructor validation: Checker.INSTANCE.checkNPE(arg, ...); this.field =
Objects.requireNonNull(arg);

Parameters

obj	the object to validate; performs blank check if instance of String
methodName	diagnostic context identifying the caller
name	display name of the validated parameter

Returns

true if the object is null or blank; false otherwise

Here is the call graph for this function:

checkNullOrBlankInternal()

boolean fr.softsf.canscan.util.Checker.checkNullOrBlankInternal ( Object obj, String methodName, String name )

private

Validates the given object for null or blank values.

Displays a standardized error dialog if invalid.

Parameters

obj	the object to validate
methodName	the name of the calling method
name	the name of the parameter

Returns

true if the object is invalid; false otherwise

Member Data Documentation

INSTANCE

fr.softsf.canscan.util.Checker.INSTANCE

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The documentation for this enum was generated from the following file:

• src/main/java/fr/softsf/canscan/util/Checker.java