X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/ff6cb26262ba25fefdf1265628265a75d790ebd6..200986a368bbbbb5df459d43cbc7f5ef3d7678db:/contrib/psg/src/peersim/config/MissingParameterException.java

diff --git a/contrib/psg/src/peersim/config/MissingParameterException.java b/contrib/psg/src/peersim/config/MissingParameterException.java
new file mode 100644
index 0000000000..58b85cde60
--- /dev/null
+++ b/contrib/psg/src/peersim/config/MissingParameterException.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2003-2005 The BISON Project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+package peersim.config;
+
+/**
+* Exception thrown to indicate that a
+* configuration property is not defined. It is thrown exclusively by
+* {@link Configuration}, since it is the only class that has access to the
+* set of defined properties. 
+ */
+public class MissingParameterException extends RuntimeException {
+
+// ================== initialization =====================================
+// =======================================================================
+
+MissingParameterException(String name) {
+
+	super("Parameter \"" + name + "\" not found.");
+}
+
+MissingParameterException(String name, String motivation) {
+
+	super("Parameter \"" + name + "\" not found " + motivation);
+}
+
+// ================== methods ============================================
+// =======================================================================
+
+/**
+* Extends message with info from stack trace.
+* It tries to guess what class called {@link Configuration} and
+* adds relevant info from the stack trace about it to the message.
+*/
+public String getMessage() {
+	
+	StackTraceElement[] stack = getStackTrace();
+
+	// Search the element that invoked Configuration
+	// It's the first whose class is different from Configuration
+	int pos;
+	for (pos=0; pos < stack.length; pos++) {
+		if (!stack[pos].getClassName().equals(
+			Configuration.class.getName()))
+			break;
+	}
+
+	return super.getMessage()+"\nAt "+
+		getStackTrace()[pos].getClassName()+"."+
+		getStackTrace()[pos].getMethodName()+":"+
+		getStackTrace()[pos].getLineNumber();
+}
+
+/**
+ * Returns the exception message without stack trace information
+ */
+public String getShortMessage()
+{
+	return super.getMessage();
+}
+
+}