Added IndexingException, since no organized exception hierarchy exists for that.
diff --git a/core/spi/src/main/java/org/apache/polygene/spi/query/IndexingException.java b/core/spi/src/main/java/org/apache/polygene/spi/query/IndexingException.java
new file mode 100644
index 0000000..6fc8124
--- /dev/null
+++ b/core/spi/src/main/java/org/apache/polygene/spi/query/IndexingException.java
@@ -0,0 +1,17 @@
+package org.apache.polygene.spi.query;
+
+/**
+ * This is the exception for Indexing problems. Subtypes should be created for specific problems.
+ *
+ */
+public abstract class IndexingException extends RuntimeException
+{
+ public IndexingException( String message )
+ {
+ super( message );
+ }
+ public IndexingException( String message, Throwable cause )
+ {
+ super( message, cause );
+ }
+}
