protected void validate()

in src/main/java/com/univocity/parsers/conversions/ValidatedConversion.java [87:152]
61 lines of code
26 McCabe index (conditional complexity)

	protected void validate(Object value) {
		DataValidationException e = null;
		String str = null;
		if (value == null) {
			if (nullable) {
				if (noneOf != null && noneOf.contains(null)) {
					e = new DataValidationException("Value '{value}' is not allowed.");
				} else {
					return;
				}
			} else {
				if (oneOf != null && oneOf.contains(null)) {
					return;
				} else {
					e = new DataValidationException("Null values not allowed.");
				}
			}
		} else {
			str = String.valueOf(value);
			if (str.trim().isEmpty()) {
				if (allowBlanks) {
					if (noneOf != null && noneOf.contains(str)) {
						e = new DataValidationException("Value '{value}' is not allowed.");
					} else {
						return;
					}
				} else {
					if (oneOf != null && oneOf.contains(str)) {
						return;
					} else {
						e = new DataValidationException("Blanks are not allowed. '{value}' is blank.");
					}
				}
			}

			if (matcher != null && e == null) {
				boolean match;
				synchronized (matcher) {
					match = matcher.reset(str).matches();
				}
				if (!match) {
					e = new DataValidationException("Value '{value}' does not match expected pattern: '" + regexToMatch + "'");
				}
			}
		}

		if (oneOf != null && !oneOf.contains(str)) {
			e = new DataValidationException("Value '{value}' is not allowed. Expecting one of: " + oneOf);
		}

		if (e == null && noneOf != null && noneOf.contains(str)) {
			e = new DataValidationException("Value '{value}' is not allowed.");
		}

		for (int i = 0; e == null && i < validators.length; i++) {
			String error = validators[i].validate(value);
			if (error != null && !error.trim().isEmpty()) {
				e = new DataValidationException("Value '{value}' didn't pass validation: " + error);
			}
		}

		if (e != null) {
			e.setValue(value);
			throw e;
		}
	}