| 4,10 → 4,10 |
|---|
| * Coded by: Group 5, software practice summer 2003 |
| * University of Bielefeld, Germany |
| * |
| * @version $Revision: 1.48 $ |
| * @version $Revision: 1.49 $ |
| * |
| * Last modification: $Date: 2003/07/22 13:59:06 $ |
| * $Id: Validator.java,v 1.48 2003/07/22 13:59:06 smcsporr Exp $ |
| * Last modification: $Date: 2003/07/22 18:59:42 $ |
| * $Id: Validator.java,v 1.49 2003/07/22 18:59:42 smcsporr Exp $ |
| */ |
| |
| package src.parser; |
| 43,38 → 43,61 |
|---|
| import src.gui.StatusInterface; |
| |
| /** |
| * An instance of the <b><code>Validator</code></b> class is a validating |
| * parser that can be used to parse and validate DOM document implementations. |
| * It uses the Xerces SAX 2.0 parser implementation. |
| * An instance of the <b><code>Validator</code></b> class is a validating parser. |
| * It can be used to parse and validate DOM document implementations against |
| * a Document Type Definition (DTD) or an XML schema. |
| * |
| * As second function, it can be used to parse an XML schema grammar to retrieve |
| * the possible top level elements, that are candidates of being the root |
| * element of an instance document of that schema. |
| * |
| * A <code>Validator</code> instance uses an instance of the <code>ValidationErrorHandler</code> class |
| * to catch and handle SAX warning and error events. These events are used to |
| * decide, whether a document is valid or not. |
| * |
| * @author S. McSporran |
| * |
| * @version $Revision: 1.48 $ Last modification: $Date: 2003/07/22 13:59:06 $ |
| * @version $Revision: 1.49 $ Last modification: $Date: 2003/07/22 18:59:42 $ |
| */ |
| public class Validator { |
| |
| /* The name of the Xerces parser implementation. */ |
| /** The name of the Xerces parser implementation. */ |
| private final String defaultParser = "org.apache.xerces.parsers.SAXParser"; |
| |
| /* A reference to a log panel implementation. */ |
| /** |
| * A reference to a log panel implementation. |
| * Required to send status messages to the log panel. |
| */ |
| private LogInterface logInterfaceReference; |
| |
| /* A reference to a status panel implementation. */ |
| /** |
| * A reference to a status panel implementation. |
| * Required to display status icons and error locations in the status panel. |
| */ |
| private StatusInterface statInterfaceReference; |
| |
| /* A variable for a SAX 2.0 parser instance. */ |
| /** An instance variable for a SAX 2.0 parser instance. */ |
| private XMLReader activeParser; |
| |
| /* The error handler to which the parser sends error events.*/ |
| /** The error handler to which the parser sends error events.*/ |
| private ValidationErrorHandler eHandler; |
| |
| /** |
| * A transformer is required to transform a DOM document representation into |
| * a character stream. |
| */ |
| private Transformer myTransformer; |
| private TransformerFactory transFactory; |
| |
| /** |
| * The class constructor creates and configures an instance of a SAX parser, registers |
| * the log and status panel and the parser's error handler. |
| * the log and status panel to enable their use and the parser's error handler. |
| * |
| * By default, the constructor tries to instantiate a parser using the Xerces |
| * implementation, but it will also look for the system's default implementation, |
| * if Xerces isn't available. Please note that Xerces is required to ensure full |
| * functionality. |
| * |
| * @param logI: A reference to a log panel implementation. |
| * @param statI: A reference to a status panel implementation. |
| * |
| 126,7 → 149,6 |
|---|
| /* Activate the needed parser features. */ |
| activateNamespaceProcessing(); |
| activateValidation(); |
| //activateDynamicValidation(); |
| activateSchemaSupport(); |
| } |
| |
| 338,10 → 360,11 |
|---|
| } |
| } |
| |
| /* |
| /** |
| * This method validates a DOM document object. |
| * |
| * @param doc: The document to be validated. |
| * |
| * @return <code>true</code>, if the document fits to it's specified grammar, |
| * <code>false</code> otherwise. |
| * |
| 415,7 → 438,7 |
|---|
| return eHandler.isValid(); |
| } |
| |
| /* |
| /** |
| * This method validates an <code>InputStream</code>. |
| * |
| * @param inStream: The stream to be validated. |
| 452,7 → 475,9 |
|---|
| return eHandler.isValid(); |
| } |
| |
| /* Sends a message to the log panel. */ |
| /** |
| * Sends a message of a specified type to the log panel. |
| */ |
| private void log(int i,String message) { |
| logInterfaceReference.log(i,message); |
| } |
| 468,7 → 493,8 |
|---|
| } |
| |
| /** |
| * This method sets an internal reference to the log panel. |
| * This method sets an internal reference to the log panel that is used to |
| * output logging messages to inform the user about program events. |
| * |
| * @param log: A log panel implementation compliant to src.gui.LogInterface. |
| * |