From 2389d5ae54ee836f8663a44c6b465a568c1fba66 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Fri, 3 Jun 2016 01:55:05 +0100
Subject: Bulk merge ebuild use flags

---
 .../service/maintenance/ebuildMetaProcessor.cpp    | 56 ++++++++++++++--------
 .../service/maintenance/ebuildMetaProcessor.h      |  1 +
 .../service/sql/maintenance/ebuildUsesInsert.sql   |  2 +
 3 files changed, 40 insertions(+), 19 deletions(-)
 create mode 100644 gentoobrowse-api/service/sql/maintenance/ebuildUsesInsert.sql

diff --git a/gentoobrowse-api/service/maintenance/ebuildMetaProcessor.cpp b/gentoobrowse-api/service/maintenance/ebuildMetaProcessor.cpp
index c8d52a3..65bc7bd 100644
--- a/gentoobrowse-api/service/maintenance/ebuildMetaProcessor.cpp
+++ b/gentoobrowse-api/service/maintenance/ebuildMetaProcessor.cpp
@@ -23,6 +23,7 @@
 #include <sql/maintenance/ebuildDelete.sql.h>
 #include <sql/maintenance/ebuildDeps.sql.h>
 #include <sql/maintenance/ebuildRDeps.sql.h>
+#include <sql/maintenance/ebuildUsesInsert.sql.h>
 
 namespace U = Gentoo::Utils;
 using namespace Gentoo::Utils::File;
@@ -110,27 +111,45 @@ namespace Gentoo {
 						{ "flags", "text" }, // 2
 						{ "op", "text" } // 3
 					}).second;
+			Utils::Database::namedTemp(dbc, "tmpEbuildUses", {
+					{ "ebuildId", "int" },
+					{ "use", "text" },
+				});
+			useInsert = dbc->modify(sql::maintenance::ebuildUsesInsert.getSql());
 		}
 
 		void
 		EbuildMetaProcessor::apply(DB::Connection * dbc)
 		{
 			if (!ebuildIds.empty()) {
-				DB::TablePatch t;
-				t.pk = { "ebuildid", "packageid", "versionspec", "flags", "slot", "op" };
-				t.cols = { "ebuildid", "packageid", "versionspec", "flags", "slot", "op" };
 				U::EntityWhereFilter ewf("ebuildId", ebuildIds);
-				t.where = &ewf;
+				{
+					dbc->execute("CREATE INDEX idxTmpEbuildDeps ON tmpEbuildDeps(ebuildId, runtime)");
+					DB::TablePatch t;
+					t.pk = { "ebuildid", "packageid", "versionspec", "flags", "slot", "op" };
+					t.cols = { "ebuildid", "packageid", "versionspec", "flags", "slot", "op" };
+					t.where = &ewf;
 
-				DB::StaticSqlWriter sb(sql::maintenance::ebuildDeps.getSql());
-				t.srcExpr = &sb;
-				t.dest = "gentoobrowse.ebuild_deps";
-				dbc->patchTable(&t);
+					DB::StaticSqlWriter sb(sql::maintenance::ebuildDeps.getSql());
+					t.srcExpr = &sb;
+					t.dest = "gentoobrowse.ebuild_deps";
+					dbc->patchTable(&t);
 
-				DB::StaticSqlWriter sr(sql::maintenance::ebuildRDeps.getSql());
-				t.srcExpr = &sr;
-				t.dest = "gentoobrowse.ebuild_rdeps";
-				dbc->patchTable(&t);
+					DB::StaticSqlWriter sr(sql::maintenance::ebuildRDeps.getSql());
+					t.srcExpr = &sr;
+					t.dest = "gentoobrowse.ebuild_rdeps";
+					dbc->patchTable(&t);
+				}
+				{
+					dbc->execute("CREATE INDEX idxTmpEbuildUses ON tmpEbuildUses(ebuildId)");
+					DB::TablePatch t;
+					t.src = "tmpEbuildUses";
+					t.dest = "gentoobrowse.ebuild_uses";
+					t.pk = { "ebuildid", "use" };
+					t.cols = { "ebuildid", "use" };
+					t.where = &ewf;
+					dbc->patchTable(&t);
+				}
 			}
 			if (!catsDeleteFrom.empty()) {
 				bool any = false;
@@ -151,6 +170,7 @@ namespace Gentoo {
 		EbuildMetaProcessor::tidy(DB::Connection * dbc)
 		{
 			Utils::Database::drop(dbc, "tmpEbuildDeps");
+			Utils::Database::drop(dbc, "tmpEbuildUses");
 		}
 
 		void
@@ -159,13 +179,11 @@ namespace Gentoo {
 			U::EntityWhereFilter ewf("ebuildId", ebuildId);
 			// IUSE
 			DB::TablePatch t;
-			U::SplitEbuildProps sep_use("ebuildId", ebuildId, "use", ecp.get("IUSE"));
-			t.dest = "gentoobrowse.ebuild_uses";
-			t.srcExpr = &sep_use;
-			t.pk = { "ebuildid", "use" };
-			t.cols = { "ebuildid", "use" };
-			t.where = &ewf;
-			dbc->patchTable(&t);
+			if (auto uses = ecp.get("IUSE")) {
+				useInsert->bindParamI(0, ebuildId);
+				useInsert->bindParamS(1, *uses);
+				useInsert->execute();
+			}
 			// KEYWORDS
 			U::SplitEbuildProps sep_keywords("ebuildId", ebuildId, "arch", ecp.get("KEYWORDS"));
 			t.dest = "gentoobrowse.ebuild_archs";
diff --git a/gentoobrowse-api/service/maintenance/ebuildMetaProcessor.h b/gentoobrowse-api/service/maintenance/ebuildMetaProcessor.h
index 2e92217..7b3e088 100644
--- a/gentoobrowse-api/service/maintenance/ebuildMetaProcessor.h
+++ b/gentoobrowse-api/service/maintenance/ebuildMetaProcessor.h
@@ -27,6 +27,7 @@ namespace Gentoo {
 				void insertDeps(const std::vector<Gentoo::DependencyPtr> &);
 
 				DB::ModifyCommandPtr depInsert;
+				DB::ModifyCommandPtr useInsert;
 				std::set<int64_t> ebuildIds;
 				std::set<std::string> catsDeleteFrom;
 		};
diff --git a/gentoobrowse-api/service/sql/maintenance/ebuildUsesInsert.sql b/gentoobrowse-api/service/sql/maintenance/ebuildUsesInsert.sql
new file mode 100644
index 0000000..9d01c96
--- /dev/null
+++ b/gentoobrowse-api/service/sql/maintenance/ebuildUsesInsert.sql
@@ -0,0 +1,2 @@
+INSERT INTO tmpEbuildUses(ebuildId, use)
+SELECT DISTINCT ?::INT, TRIM(REGEXP_SPLIT_TO_TABLE(?, '\s+'), '+')
-- 
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