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+/*
+* Copyright 2003 Federal Chancellery Austria
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package at.gv.egovernment.moa.util;
+
+import org.apache.xml.utils.DefaultErrorHandler;
+import org.xml.sax.SAXException;
+import org.xml.sax.SAXParseException;
+
+import at.gv.egovernment.moa.logging.LogMsg;
+import at.gv.egovernment.moa.logging.Logger;
+
+/**
+ * An <code>ErrorHandler</code> that logs a message and throws a
+ * <code>SAXException</code> upon <code>error</code> and <code>fatal</code>
+ * parsing errors.
+ *
+ * @author Patrick Peck
+ * @author Sven Aigner
+ */
+public class MOAErrorHandler extends DefaultErrorHandler {
+
+ /**
+ * Logs a warning message.
+ *
+ * @see org.xml.sax.ErrorHandler#warning(SAXParseException)
+ */
+ public void warning(SAXParseException exception) throws SAXException {
+ warn("parser.00", messageParams(exception), null);
+ }
+
+ /**
+ * Logs a warning and rethrows the <code>exception</code>.
+ *
+ * @see org.xml.sax.ErrorHandler#error(SAXParseException)
+ */
+ public void error(SAXParseException exception) throws SAXException {
+ warn("parser.01", messageParams(exception), null);
+ throw exception;
+ }
+
+ /**
+ * Logs a warning and rethrows the <code>exception</code>.
+ *
+ * @see org.xml.sax.ErrorHandler#fatalError(SAXParseException)
+ */
+ public void fatalError(SAXParseException exception) throws SAXException {
+ warn("parser.02", messageParams(exception), null);
+ throw exception;
+ }
+
+ /**
+ * Log a warning message.
+ *
+ * @param messageId The message ID to log.
+ * @param parameters Additional message parameters.
+ * @param t The <code>Throwable</code> to log; usually the cause of this
+ * warning.
+ */
+ private static void warn(
+ String messageId,
+ Object[] parameters,
+ Throwable t) {
+
+ MessageProvider msg = MessageProvider.getInstance();
+ Logger.warn(new LogMsg(msg.getMessage(messageId, parameters)), t);
+ }
+
+ /**
+ * Put the system id, line and column number information from the exception
+ * into an <code>Object</code> array, to provide it as a
+ * <code>MessageFormat</code> parameter.
+ *
+ * @param e The <code>SAXParseException</code> containing the
+ * source system id and line/column numbers.
+ * @return An array containing the system id (a <code>String</code>) as well
+ * as line/column numbers (2 <code>Integer</code> objects) from the
+ * <code>SAXParseException</code>.
+ */
+ private static Object[] messageParams(SAXParseException e) {
+ return new Object[] {
+ e.getMessage(),
+ e.getSystemId(),
+ new Integer(e.getLineNumber()),
+ new Integer(e.getColumnNumber())};
+ }
+
+} \ No newline at end of file