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Posted to commits@commons.apache.org by si...@apache.org on 2011/06/22 21:22:06 UTC
svn commit: r1138593 -
/commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/BaseMutableGraph.java
Author: simonetripodi
Date: Wed Jun 22 19:22:05 2011
New Revision: 1138593
URL: http://svn.apache.org/viewvc?rev=1138593&view=rev
Log:
when adding an Edge, checked that the edge itself, the head vertex and the tail vertex are not null
Modified:
commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/BaseMutableGraph.java
Modified: commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/BaseMutableGraph.java
URL: http://svn.apache.org/viewvc/commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/BaseMutableGraph.java?rev=1138593&r1=1138592&r2=1138593&view=diff
==============================================================================
--- commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/BaseMutableGraph.java (original)
+++ commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/BaseMutableGraph.java Wed Jun 22 19:22:05 2011
@@ -137,6 +137,19 @@ public abstract class BaseMutableGraph<V
*/
private final void checkEdge( E e )
{
+ if ( e == null )
+ {
+ throw new GraphException( "Impossible to add a null Edge in the Graph" );
+ }
+ if ( e.getHead() == null )
+ {
+ throw new GraphException( "Null head Vertex not admitted" );
+ }
+ if ( e.getTail() == null )
+ {
+ throw new GraphException( "Null tail Vertex not admitted" );
+ }
+
if ( !getAdjacencyList().containsKey( e.getHead() ) )
{
throw new GraphException( format( "Head Vertex '%s' not present in the Graph", e.getHead() ) );