public ValidationResult validate()

in src/main/java/org/apache/nifi/processor/util/StandardValidators.java [320:347]

• 25 lines of code
• 7 McCabe index (conditional complexity)

        public ValidationResult validate(final String subject, final String value, final ValidationContext context) {
            if (context.isExpressionLanguageSupported(subject) && context.isExpressionLanguagePresent(value)) {
                final ResultType resultType = context.newExpressionLanguageCompiler().getResultType(value);
                if (!resultType.equals(ResultType.STRING)) {
                    return new ValidationResult.Builder()
                            .subject(subject)
                            .input(value)
                            .valid(false)
                            .explanation("Expected Attribute Query to return type " + ResultType.STRING + " but query returns type " + resultType)
                            .build();
                }

                return new ValidationResult.Builder().subject(subject).input(value).explanation("Expression Language Present").valid(true).build();
            }

            String reason = null;
            try {
                if (!Charset.isSupported(value)) {
                    reason = "Character Set is not supported by this JVM.";
                }
            } catch (final UnsupportedCharsetException uce) {
                reason = "Character Set is not supported by this JVM.";
            } catch (final IllegalArgumentException iae) {
                reason = "Character Set value cannot be null.";
            }

            return new ValidationResult.Builder().subject(subject).input(value).explanation(reason).valid(reason == null).build();
        }