From 2fd7b3fd77c8141f7fb21d2bd86eb839fa55ef6f Mon Sep 17 00:00:00 2001
From: "Brian S. O'Neill" <bronee@gmail.com>
Date: Fri, 13 Oct 2006 21:09:10 +0000
Subject: Pass the internal query executor along when "with" is called, as an
 optimization.

---
 src/main/java/com/amazon/carbonado/qe/QueryEngine.java      | 13 ++++++++-----
 src/main/java/com/amazon/carbonado/qe/StandardQuery.java    | 12 +++++++++---
 .../java/com/amazon/carbonado/repo/jdbc/JDBCStorage.java    | 13 ++++++++-----
 3 files changed, 25 insertions(+), 13 deletions(-)

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

diff --git a/src/main/java/com/amazon/carbonado/qe/QueryEngine.java b/src/main/java/com/amazon/carbonado/qe/QueryEngine.java
index 59c9872..56f6145 100644
--- a/src/main/java/com/amazon/carbonado/qe/QueryEngine.java
+++ b/src/main/java/com/amazon/carbonado/qe/QueryEngine.java
@@ -50,12 +50,12 @@ public class QueryEngine<S extends Storable> extends StandardQueryFactory<S>
     }
 
     protected StandardQuery<S> createQuery(FilterValues<S> values, OrderingList<S> ordering) {
-        return new Query(values, ordering);
+        return new Query(values, ordering, null);
     }
 
     private class Query extends StandardQuery<S> {
-        Query(FilterValues<S> values, OrderingList<S> ordering) {
-            super(values, ordering);
+        Query(FilterValues<S> values, OrderingList<S> ordering, QueryExecutor<S> executor) {
+            super(values, ordering, executor);
         }
 
         protected Transaction enterTransaction(IsolationLevel level) {
@@ -70,8 +70,11 @@ public class QueryEngine<S extends Storable> extends StandardQueryFactory<S>
             return mExecutorFactory;
         }
 
-        protected StandardQuery<S> newInstance(FilterValues<S> values, OrderingList<S> ordering) {
-            return new Query(values, ordering);
+        protected StandardQuery<S> newInstance(FilterValues<S> values,
+                                               OrderingList<S> ordering,
+                                               QueryExecutor<S> executor)
+        {
+            return new Query(values, ordering, executor);
         }
     }
 }
diff --git a/src/main/java/com/amazon/carbonado/qe/StandardQuery.java b/src/main/java/com/amazon/carbonado/qe/StandardQuery.java
index 0a4c9d9..d7f5263 100644
--- a/src/main/java/com/amazon/carbonado/qe/StandardQuery.java
+++ b/src/main/java/com/amazon/carbonado/qe/StandardQuery.java
@@ -61,13 +61,18 @@ public abstract class StandardQuery<S extends Storable> extends AbstractQuery<S>
     /**
      * @param values optional values object, defaults to open filter if null
      * @param ordering optional order-by properties
+     * @param executor optional executor to use (by default lazily obtains and caches executor)
      */
-    protected StandardQuery(FilterValues<S> values, OrderingList<S> ordering) {
+    protected StandardQuery(FilterValues<S> values,
+                            OrderingList<S> ordering,
+                            QueryExecutor<S> executor)
+    {
         mValues = values;
         if (ordering == null) {
             ordering = OrderingList.emptyList();
         }
         mOrdering = ordering;
+        mExecutor = executor;
     }
 
     public Class<S> getStorableType() {
@@ -429,10 +434,11 @@ public abstract class StandardQuery<S extends Storable> extends AbstractQuery<S>
      * @param ordering order-by properties, never null
      */
     protected abstract StandardQuery<S> newInstance(FilterValues<S> values,
-                                                    OrderingList<S> ordering);
+                                                    OrderingList<S> ordering,
+                                                    QueryExecutor<S> executor);
 
     private StandardQuery<S> newInstance(FilterValues<S> values) {
-        return newInstance(values, mOrdering);
+        return newInstance(values, mOrdering, mExecutor);
     }
 
     private Query<S> createQuery(FilterValues<S> values, OrderingList<S> ordering)
diff --git a/src/main/java/com/amazon/carbonado/repo/jdbc/JDBCStorage.java b/src/main/java/com/amazon/carbonado/repo/jdbc/JDBCStorage.java
index b7a732e..df61ecf 100644
--- a/src/main/java/com/amazon/carbonado/repo/jdbc/JDBCStorage.java
+++ b/src/main/java/com/amazon/carbonado/repo/jdbc/JDBCStorage.java
@@ -249,7 +249,7 @@ class JDBCStorage<S extends Storable> extends StandardQueryFactory<S>
     }
 
     protected StandardQuery<S> createQuery(FilterValues<S> values, OrderingList<S> ordering) {
-        return new JDBCQuery(values, ordering);
+        return new JDBCQuery(values, ordering, null);
     }
 
     public S instantiate(ResultSet rs) throws SQLException {
@@ -611,8 +611,8 @@ class JDBCStorage<S extends Storable> extends StandardQueryFactory<S>
     }
 
     private class JDBCQuery extends StandardQuery<S> {
-        JDBCQuery(FilterValues<S> values, OrderingList<S> ordering) {
-            super(values, ordering);
+        JDBCQuery(FilterValues<S> values, OrderingList<S> ordering, QueryExecutor<S> executor) {
+            super(values, ordering, executor);
         }
 
         @Override
@@ -642,8 +642,11 @@ class JDBCStorage<S extends Storable> extends StandardQueryFactory<S>
             return JDBCStorage.this.mExecutorFactory;
         }
 
-        protected StandardQuery<S> newInstance(FilterValues<S> values, OrderingList<S> ordering) {
-            return new JDBCQuery(values, ordering);
+        protected StandardQuery<S> newInstance(FilterValues<S> values,
+                                               OrderingList<S> ordering,
+                                               QueryExecutor<S> executor)
+        {
+            return new JDBCQuery(values, ordering, executor);
         }
     }
 
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