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From "Michael Goddard (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-689) NullPointerException thrown by equals method in SpanOrQuery
Date Thu, 19 Oct 2006 01:35:34 GMT
NullPointerException thrown by equals method in SpanOrQuery
-----------------------------------------------------------

                 Key: LUCENE-689
                 URL: http://issues.apache.org/jira/browse/LUCENE-689
             Project: Lucene - Java
          Issue Type: Bug
          Components: Search
    Affects Versions: 2.1
         Environment: Java 1.5.0_09, RHEL 3 Linux, Tomcat 5.0.28
            Reporter: Michael Goddard


Part of our code utilizes the equals method in SpanOrQuery and, in certain cases (details
to follow, if necessary), a NullPointerException gets thrown as a result of the String "field"
being null.  After applying the following patch, the problem disappeared:

Index: src/java/org/apache/lucene/search/spans/SpanOrQuery.java
===================================================================
--- src/java/org/apache/lucene/search/spans/SpanOrQuery.java    (revision 465065)
+++ src/java/org/apache/lucene/search/spans/SpanOrQuery.java    (working copy)
@@ -121,7 +121,8 @@
     final SpanOrQuery that = (SpanOrQuery) o;

     if (!clauses.equals(that.clauses)) return false;
-    if (!field.equals(that.field)) return false;
+    if (field != null && !field.equals(that.field)) return false;
+    if (field == null && that.field != null) return false;

     return getBoost() == that.getBoost();
   }



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