From 872459a7cc525eb87a2dc5a82f1b137493186080 Mon Sep 17 00:00:00 2001
From: Alexander Sulfrian <alexander@sulfrian.net>
Date: Sun, 10 Jan 2010 21:46:58 +0100
Subject: added function for testing if table exists in database
---
src/base/database.cpp | 20 ++++++++++++++++++++
src/base/database.hpp | 8 ++++++++
2 files changed, 28 insertions(+)
(limited to 'src')
diff --git a/src/base/database.cpp b/src/base/database.cpp
index 96f40745..ec2e8493 100644
--- a/src/base/database.cpp
+++ b/src/base/database.cpp
@@ -82,6 +82,26 @@ namespace usdx
sqlite3_finalize(sqliteStatement);
}
+ const bool StatDatabase::sqlite_table_exists(const std::string table)
+ {
+ std::string sql = "select [name] from [sqlite_master] where [type] = 'table' and [tbl_name] = ?1;";
+ sqlite3_stmt *sqliteStatement = sqlite_prepare(sql);
+
+ // bind table name to parameter 1 and execute statement
+ sqlite3_bind_text(sqliteStatement, 1, table.c_str(), table.length(), SQLITE_TRANSIENT);
+ int rc = sqlite3_step(sqliteStatement);
+
+ // if rc is SQLITE_ROW, than result has at lease one row and so
+ // the table exists
+ bool result = false;
+ if (rc == SQLITE_ROW) {
+ result = true;
+ }
+
+ sqlite3_finalize(sqliteStatement);
+ return result;
+ }
+
void StatDatabase::init(const std::string filename)
{
LOG4CXX_DEBUG(log, "Initializing Database: " << filename);
diff --git a/src/base/database.hpp b/src/base/database.hpp
index 3bf699ad..d5313609 100644
--- a/src/base/database.hpp
+++ b/src/base/database.hpp
@@ -72,6 +72,14 @@ namespace usdx
*/
void sqlite_exec(const std::string sqlStatement);
+ /**
+ * Check if the given table exists in the database.
+ *
+ * @param table Name to check if exists
+ * @return true, if table exists, false if not
+ */
+ const bool sqlite_table_exists(const std::string table);
+
// Singleton
StatDatabase(std::string filename);
--
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