From 1e81bfc705cafe88b804a8a6b1b8616c8773d280 Mon Sep 17 00:00:00 2001
From: "Brian S. O'Neill" <bronee@gmail.com>
Date: Sun, 14 Oct 2007 05:44:35 +0000
Subject: Support ordering by derived properties.

---
 .../com/amazon/carbonado/info/ChainedProperty.java   | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

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

diff --git a/src/main/java/com/amazon/carbonado/info/ChainedProperty.java b/src/main/java/com/amazon/carbonado/info/ChainedProperty.java
index 575bcbf..e067350 100644
--- a/src/main/java/com/amazon/carbonado/info/ChainedProperty.java
+++ b/src/main/java/com/amazon/carbonado/info/ChainedProperty.java
@@ -183,6 +183,26 @@ public class ChainedProperty<S extends Storable> implements Appender {
         return false;
     }
 
+    /**
+     * Returns true if any property in the chain is derived.
+     *
+     * @see com.amazon.carbonado.Derived
+     * @since 1.2
+     */
+    public boolean isDerived() {
+        if (mPrime.isDerived()) {
+            return true;
+        }
+        if (mChain != null) {
+            for (StorableProperty<?> prop : mChain) {
+                if (prop.isDerived()) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
     /**
      * Returns the last property in the chain, or the prime property if chain
      * is empty.
-- 
cgit v1.2.3