1 files changed, 88 insertions, 0 deletions
diff --git a/chrome/common/sqlite_compiled_statement.cc b/chrome/common/sqlite_compiled_statement.cc
new file mode 100644
index 0000000..3916d14
--- /dev/null
+++ b/chrome/common/sqlite_compiled_statement.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "chrome/common/stl_util-inl.h"
+#include "chrome/common/sqlite_compiled_statement.h"
+
+// SqliteStatementCache -------------------------------------------------------
+
+SqliteStatementCache::~SqliteStatementCache() {
+  STLDeleteContainerPairSecondPointers(statements_.begin(), statements_.end());
+  statements_.clear();
+  db_ = NULL;
+}
+
+SQLStatement* SqliteStatementCache::InternalGetStatement(const char* func_name,
+                                                         int func_number,
+                                                         const char* sql) {
+  FuncID id;
+  id.name = func_name;
+  id.number = func_number;
+
+  StatementMap::const_iterator found = statements_.find(id);
+  if (found != statements_.end())
+    return found->second;
+
+  if (!sql)
+    return NULL;  // Don't create a new statement when we were not given SQL.
+
+  // Create a new statement.
+  SQLStatement* statement = new SQLStatement();
+  if (statement->prepare(db_, sql) != SQLITE_OK) {
+    const char* err_msg = sqlite3_errmsg(db_);
+    NOTREACHED() << "SQL preparation error for: " << err_msg;
+    return NULL;
+  }
+
+  statements_[id] = statement;
+  return statement;
+}
+
+bool SqliteStatementCache::FuncID::operator<(const FuncID& other) const {
+  // Compare numbers first since they are faster than strings and they are
+  // almost always unique.
+  if (number != other.number)
+    return number < other.number;
+  return name < other.name;
+}
+
+// SqliteCompiledStatement ----------------------------------------------------
+
+SqliteCompiledStatement::SqliteCompiledStatement(const char* func_name,
+                                                 int func_number,
+                                                 SqliteStatementCache& cache,
+                                                 const char* sql) {
+  statement_ = cache.GetStatement(func_name, func_number, sql);
+}
+
+SqliteCompiledStatement::~SqliteCompiledStatement() {
+  // Reset the statement so that subsequent callers don't get crap in it.
+  if (statement_)
+    statement_->reset();
+}