luetzkendorf 2005/05/27 10:18:49
Modified: src/share/org/apache/slide/common SlideException.java
Log:
new methods initCause and getCause to allow chaning of exception
(patch by Thomas Bellembois)
Revision Changes Path
1.11 +30 -9
jakarta-slide/src/share/org/apache/slide/common/SlideException.java
Index: SlideException.java
===================================================================
RCS file:
/home/cvs/jakarta-slide/src/share/org/apache/slide/common/SlideException.java,v
retrieving revision 1.10
retrieving revision 1.11
diff -u -r1.10 -r1.11
--- SlideException.java 28 Jul 2004 09:38:11 -0000 1.10
+++ SlideException.java 27 May 2005 17:18:49 -0000 1.11
@@ -41,6 +41,7 @@
private static final int DEBUG = Logger.DEBUG;
private static Logger LOGGER = Domain.getLogger();
+ private Throwable cause = this;
// -----------------------------------------------------------
Constructors
@@ -67,11 +68,31 @@
Domain.warn(message);
}
- if (LOGGER.isEnabled(CHANNEL, DEBUG)) {
- StringWriter sw = new StringWriter();
- printStackTrace( new PrintWriter(sw, true) ); //autoFlush=true
- LOGGER.log( sw.toString(), CHANNEL, DEBUG );
- }
+ if (LOGGER.isEnabled(CHANNEL, DEBUG)) {
+ StringWriter sw = new StringWriter();
+ printStackTrace( new PrintWriter(sw, true) ); //autoFlush=true
+ LOGGER.log( sw.toString(), CHANNEL, DEBUG );
+ }
+ }
+
+ /**
+ * Set the cause of the exception
+ */
+ public Throwable initCause(Throwable cause) {
+ if (this.cause != this)
+ throw new IllegalStateException("Can't overwrite cause");
+ if (cause == this)
+ throw new IllegalArgumentException("Self-causation not
permitted");
+ this.cause = cause;
+ return this;
+ }
+
+
+ /**
+ * Get the cause of the exception
+ */
+ public Throwable getCause() {
+ return (cause==this ? null : cause);
}
}
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