SERVER-8791 SERVER-9212 remove IndexSpec

1 files changed, 81 insertions, 0 deletions

diff --git a/src/mongo/db/index_legacy.cpp b/src/mongo/db/index_legacy.cpp
new file mode 100644
index 00000000000..a47544af518
--- /dev/null
+++ b/src/mongo/db/index_legacy.cpp
@@ -0,0 +1,81 @@
+/**
+*    Copyright (C) 2013 10gen Inc.
+*
+*    This program is free software: you can redistribute it and/or  modify
+*    it under the terms of the GNU Affero General Public License, version 3,
+*    as published by the Free Software Foundation.
+*
+*    This program is distributed in the hope that it will be useful,
+*    but WITHOUT ANY WARRANTY; without even the implied warranty of
+*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*    GNU Affero General Public License for more details.
+*
+*    You should have received a copy of the GNU Affero General Public License
+*    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "mongo/db/index_legacy.h"
+
+#include "mongo/db/client.h"
+#include "mongo/db/fts/fts_enabled.h"
+#include "mongo/db/fts/fts_spec.h"
+#include "mongo/db/index_names.h"
+#include "mongo/db/index/catalog_hack.h"
+#include "mongo/db/index/hash_access_method.h"
+#include "mongo/db/jsobj.h"
+#include "mongo/db/namespace_details.h"
+
+namespace mongo {
+
+    // static
+    BSONObj IndexLegacy::adjustIndexSpecObject(const BSONObj& obj) {
+        string pluginName = IndexNames::findPluginName(obj.getObjectField("key"));
+
+        if (IndexNames::TEXT == pluginName || IndexNames::TEXT_INTERNAL == pluginName) {
+            StringData desc = cc().desc();
+            if (desc.find("conn") == 0) {
+                // this is to make sure we only complain for users
+                // if you do get a text index created an a primary
+                // want it to index on the secondary as well
+                massert(16811, "text search not enabled", fts::isTextSearchEnabled() );
+            }
+            return fts::FTSSpec::fixSpec(obj);
+        }
+
+        return obj;
+    }
+
+    // static
+    BSONObj IndexLegacy::getMissingField(const BSONObj& infoObj) {
+        if (IndexNames::HASHED == CatalogHack::getAccessMethodName(infoObj.getObjectField("key"))) {
+            int hashVersion = infoObj["hashVersion"].numberInt();
+            HashSeed seed = infoObj["seed"].numberInt();
+
+            // Explicit null valued fields and missing fields are both represented in hashed indexes
+            // using the hash value of the null BSONElement.  This is partly for historical reasons
+            // (hash of null was used in the initial release of hashed indexes and changing would
+            // alter the data format).  Additionally, in certain places the hashed index code and
+            // the index bound calculation code assume null and missing are indexed identically.
+            BSONObj nullObj = BSON("" << BSONNULL);
+            return BSON("" << HashAccessMethod::makeSingleKey(nullObj.firstElement(), seed,
+                                                              hashVersion));
+        }
+        else {
+            BSONObjBuilder b;
+            b.appendNull("");
+            return b.obj();
+        }
+    }
+
+    // static
+    void IndexLegacy::postBuildHook(NamespaceDetails* tableToIndex, const IndexDetails& idx) {
+        // If it's an FTS index, we want to set the power of 2 flag.
+        string pluginName = CatalogHack::getAccessMethodName(idx.keyPattern());
+        if (IndexNames::TEXT == pluginName || IndexNames::TEXT_INTERNAL == pluginName) {
+            if (tableToIndex->setUserFlag(NamespaceDetails::Flag_UsePowerOf2Sizes)) {
+                tableToIndex->syncUserFlags(idx.parentNS());
+            }
+        }
+    }
+
+}  // namespace mongo