From b8a866d742648e13d706c4979380d75a13761a1d Mon Sep 17 00:00:00 2001
From: randomdan <randomdan@localhost>
Date: Thu, 1 Sep 2011 23:19:14 +0000
Subject: Allow low preference caches to refill higher ones

---
 project2/common/cache.cpp        |  2 +-
 project2/common/rowProcessor.cpp | 23 +++++++++++++----------
 project2/common/rowProcessor.h   |  4 +++-
 3 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/project2/common/cache.cpp b/project2/common/cache.cpp
index 1c078fb..7ad4053 100644
--- a/project2/common/cache.cpp
+++ b/project2/common/cache.cpp
@@ -17,7 +17,7 @@ bool Cache::checkAndExecute(const Glib::ustring & n, const Glib::ustring & f, co
 	RowSetCPtr cached = getCachedRowSet(n, f, rp);
 	if (cached) {
 		try {
-			Logger()->messagef(LOG_ERR, "Executing from cache");
+			Logger()->messagef(LOG_DEBUG, "Executing from cache '%s'", name.c_str());
 			cached->execute(f, rp);
 			return true;
 		}
diff --git a/project2/common/rowProcessor.cpp b/project2/common/rowProcessor.cpp
index 8161aaf..71fdd76 100644
--- a/project2/common/rowProcessor.cpp
+++ b/project2/common/rowProcessor.cpp
@@ -28,30 +28,33 @@ RowProcessor::execute() const
 	ScopeObject _ihp(boost::bind(&IHaveParameters::pop, this));
 	BOOST_FOREACH(const CachePtr & c, caches) {
 		if (c->checkAndExecute(source->name, filter, this)) {
+			BOOST_FOREACH(const TargetCaches::value_type & c, tc) {
+				c->get<1>()->close(source->name, filter, this);
+			}
+			tc.clear();
 			return;
 		}
-	}
-	BOOST_FOREACH(const CachePtr & c, caches) {
 		PresenterPtr p = c->openFor(source->name, filter, this);
 		if (p) {
-			tc.insert(p);
+			tc.insert(TargetCachePtr(new TargetCache(p, c)));
 		}
 	}
+	Logger()->messagef(LOG_DEBUG, "Executing from source '%s'", source->name.c_str());
 	source->execute(filter, this);
-	tc.clear();
-	BOOST_FOREACH(const CachePtr & c, caches) {
-		c->close(source->name, filter, this);
+	BOOST_FOREACH(const TargetCaches::value_type & c, tc) {
+		c->get<1>()->close(source->name, filter, this);
 	}
+	tc.clear();
 }
 
 void
 RowProcessor::rowReadyInternal(const RowState * rs) const
 {
 	BOOST_FOREACH(const TargetCaches::value_type & c, tc) {
-		c->pushSub(filter.empty() ? "row" : filter);
-		rs->foreachColumn(boost::bind(&Presenter::addField, c, _2, _3));
-		rs->foreachAttr(boost::bind(&Presenter::addAttr, c, _1, _2));
-		c->popSub();
+		c->get<0>()->pushSub(filter.empty() ? "row" : filter);
+		rs->foreachColumn(boost::bind(&Presenter::addField, c->get<0>(), _2, _3));
+		rs->foreachAttr(boost::bind(&Presenter::addAttr, c->get<0>(), _1, _2));
+		c->get<0>()->popSub();
 	}
 	rowReady(rs);
 }
diff --git a/project2/common/rowProcessor.h b/project2/common/rowProcessor.h
index c25dc73..3f39d19 100644
--- a/project2/common/rowProcessor.h
+++ b/project2/common/rowProcessor.h
@@ -29,7 +29,9 @@ class RowProcessor : public IHaveParameters {
 		virtual void rowReady(const RowState *) const = 0;
 		typedef ANONORDEREDSTORAGEOF(Cache) Caches;
 		Caches caches;
-		typedef std::set<PresenterPtr> TargetCaches;
+		typedef boost::tuple<PresenterPtr, CachePtr> TargetCache;
+		typedef boost::shared_ptr<TargetCache> TargetCachePtr;
+		typedef std::set<TargetCachePtr> TargetCaches;
 		mutable TargetCaches tc;
 };
 
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