public boolean checkValues()

in taverna-rest-activity-ui/src/main/java/org/apache/taverna/activities/rest/ui/config/RESTActivityConfigurationPanel.java [160:219]
37 lines of code
7 McCabe index (conditional complexity)

	public boolean checkValues() {
		// HTTP method is a fixed selection combo-box - no validation required

		// URL signature must be present and be valid
		String candidateURLSignature = tfURLSignature.getText().trim();
		if (candidateURLSignature == null
				|| candidateURLSignature.length() == 0) {
			JOptionPane.showMessageDialog(MainWindow.getMainWindow(),
					"URL signature must not be empty",
					"REST Activity Configuration - Warning",
					JOptionPane.WARNING_MESSAGE);
			return (false);
		} else {
			try {
				// Test if any exceptions will be thrown - if not, proceed to
				// other validations
				URISignatureHandler.validate(candidateURLSignature);
			} catch (URISignatureParsingException e) {
				JOptionPane.showMessageDialog(MainWindow.getMainWindow(), e
						.getMessage(), "REST Activity Configuration - Warning",
						JOptionPane.WARNING_MESSAGE);
				return (false);
			}

			// Test if the URL string contains "unsafe" characters, i.e. characters
			// that need URL-encoding.
			// From RFC 1738: "...Only alphanumerics [0-9a-zA-Z], the special
			// characters "$-_.+!*'()," (not including the quotes) and reserved
			// characters used for their reserved purposes may be
			// used unencoded within a URL."
			// Reserved characters are: ";/?:@&=" ..." (excluding quotes) and "%" used
			// for escaping.
			// We do not warn the user if they have not properly enclosed parameter
			// names in curly braces as this check is already being done elsewhere in the code.
			// We do not check the characters in parameter names either.
			try {
				// Test if any exceptions will be thrown - if not, proceed to
				// other validations
				URISignatureHandler.checkForUnsafeCharacters(candidateURLSignature);
			} catch (URISignatureParsingException e) {
				JOptionPane.showMessageDialog(MainWindow.getMainWindow(), e
						.getMessage(), "REST Activity Configuration - Warning",
						JOptionPane.WARNING_MESSAGE);
				return (false);
			}

			// Other HTTP headers configured must not have empty names
			ArrayList<String> otherHTTPHeaderNames = httpHeadersTableModel.getHTTPHeaderNames();
			for (String headerName : otherHTTPHeaderNames){
				if (headerName.equals("")){
					JOptionPane.showMessageDialog(MainWindow.getMainWindow(), "One of the HTTP header names is empty", "REST Activity Configuration - Warning",
							JOptionPane.WARNING_MESSAGE);
					return false;
				}
			}
		}

		// All valid, return true
		return true;
	}