From 4063328f97c0180ceab565cc3f411e3dcc07bca8 Mon Sep 17 00:00:00 2001
From: "Brian S. O'Neill" <bronee@gmail.com>
Date: Fri, 26 Oct 2007 21:24:43 +0000
Subject: Added support for outer joins.

---
 src/main/java/com/amazon/carbonado/qe/IndexedQueryAnalyzer.java | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/main/java/com/amazon/carbonado/qe')

diff --git a/src/main/java/com/amazon/carbonado/qe/IndexedQueryAnalyzer.java b/src/main/java/com/amazon/carbonado/qe/IndexedQueryAnalyzer.java
index 60cf3da..93d4666 100644
--- a/src/main/java/com/amazon/carbonado/qe/IndexedQueryAnalyzer.java
+++ b/src/main/java/com/amazon/carbonado/qe/IndexedQueryAnalyzer.java
@@ -209,12 +209,20 @@ public class IndexedQueryAnalyzer<S extends Storable> {
             if (!isProperJoin(chainedProp.getPrimeProperty())) {
                 break evaluate;
             }
+            if (chainedProp.isOuterJoin(0)) {
+                // Outer joins cannot be optimized via foreign indexes.
+                break evaluate;
+            }
 
             int count = chainedProp.getChainCount();
             for (int i=0; i<count; i++) {
                 if (!isProperJoin(chainedProp.getChainedProperty(i))) {
                     break evaluate;
                 }
+                if (chainedProp.isOuterJoin(i + 1)) {
+                    // Outer joins cannot be optimized via foreign indexes.
+                    break evaluate;
+                }
             }
 
             // All foreign indexes are available for use.
-- 
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