Core/DBLayer: Move QueryHolder and BasicStatement operations to their own file and remove SQLOperation.cpp from revision control

--HG--
branch : trunk

1 files changed, 189 insertions, 0 deletions

diff --git a/src/server/shared/Database/QueryHolder.cpp b/src/server/shared/Database/QueryHolder.cpp
new file mode 100644
index 00000000000..dfb5792cc9d
--- /dev/null
+++ b/src/server/shared/Database/QueryHolder.cpp
@@ -0,0 +1,189 @@
+/*
+ * Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "QueryHolder.h"
+#include "PreparedStatement.h"
+#include "MySQLConnection.h"
+#include "Log.h"
+
+bool SQLQueryHolder::SetQuery(size_t index, const char *sql)
+{
+    if (m_queries.size() <= index)
+    {
+        sLog.outError("Query index (%zu) out of range (size: %u) for query: %s", index, (uint32)m_queries.size(), sql);
+        return false;
+    }
+
+    /// not executed yet, just stored (it's not called a holder for nothing)
+    SQLElementData element;
+    element.type = SQL_ELEMENT_RAW;
+    element.element.query = strdup(sql);
+    
+    SQLResultSetUnion result;
+    result.qresult = NULL;
+
+    m_queries[index] = SQLResultPair(element, result);
+    return true;
+}
+
+bool SQLQueryHolder::SetPQuery(size_t index, const char *format, ...)
+{
+    if (!format)
+    {
+        sLog.outError("Query (index: %zu) is empty.",index);
+        return false;
+    }
+
+    va_list ap;
+    char szQuery [MAX_QUERY_LEN];
+    va_start(ap, format);
+    int res = vsnprintf(szQuery, MAX_QUERY_LEN, format, ap);
+    va_end(ap);
+
+    if (res == -1)
+    {
+        sLog.outError("SQL Query truncated (and not execute) for format: %s",format);
+        return false;
+    }
+
+    return SetQuery(index, szQuery);
+}
+
+QueryResult SQLQueryHolder::GetResult(size_t index)
+{
+    // Don't call to this function if the index is of an ad-hoc statement
+    if (index < m_queries.size())
+    {
+        /// the query strings are freed on the first GetResult or in the destructor
+        if (SQLElementData* data = &m_queries[index].first)
+        {
+            free((void*)(const_cast<char*>(data->element.query)));
+            data->element.query = NULL;
+        }
+
+        ResultSet* result = m_queries[index].second.qresult;
+        if (!result || !result->GetRowCount())
+            return QueryResult(NULL);
+
+        result->NextRow();
+        return QueryResult(result);
+    }
+    else
+        return QueryResult(NULL);
+}
+
+PreparedQueryResult SQLQueryHolder::GetPreparedResult(size_t index)
+{
+    // Don't call to this function if the index is of a prepared statement
+    if (index < m_queries.size())
+    {
+        /// the query strings are freed on the first GetResult or in the destructor
+        if (SQLElementData* data = &m_queries[index].first)
+        {
+            delete data->element.stmt;
+            data->element.stmt = NULL;
+        }
+
+        PreparedResultSet* result = m_queries[index].second.presult;
+        if (!result || !result->GetRowCount())
+            return PreparedQueryResult(NULL);
+
+        result->NextRow();
+        return PreparedQueryResult(result);
+    }
+    else
+        return PreparedQueryResult(NULL);
+}
+
+void SQLQueryHolder::SetResult(size_t index, ResultSet* result)
+{
+    /// store the result in the holder
+    if (index < m_queries.size())
+        m_queries[index].second.qresult = result;
+}
+
+void SQLQueryHolder::SetPreparedResult(size_t index, PreparedResultSet* result)
+{
+    /// store the result in the holder
+    if (index < m_queries.size())
+        m_queries[index].second.presult = result;
+}
+
+SQLQueryHolder::~SQLQueryHolder()
+{
+    for (size_t i = 0; i < m_queries.size(); i++)
+    {
+        /// if the result was never used, free the resources
+        /// results used already (getresult called) are expected to be deleted
+        if (SQLElementData* data = &m_queries[i].first)
+        {
+            switch (data->type)
+            {
+                case SQL_ELEMENT_RAW:
+                    free((void*)(const_cast<char*>(data->element.query)));
+                    break;
+                case SQL_ELEMENT_PREPARED:
+                    delete data->element.stmt;
+                    break;
+            }
+        }
+    }
+}
+
+void SQLQueryHolder::SetSize(size_t size)
+{
+    /// to optimize push_back, reserve the number of queries about to be executed
+    m_queries.resize(size);
+}
+
+bool SQLQueryHolderTask::Execute()
+{
+    if (!m_holder)
+        return false;
+
+    /// we can do this, we are friends
+    std::vector<SQLQueryHolder::SQLResultPair> &queries = m_holder->m_queries;
+
+    for (size_t i = 0; i < queries.size(); i++)
+    {
+        /// execute all queries in the holder and pass the results
+        if (SQLElementData* data = &queries[i].first)
+        {
+            switch (data->type)
+            {
+                case SQL_ELEMENT_RAW:
+                {
+                    char const *sql = data->element.query;
+                    if (sql)
+                        m_holder->SetResult(i, m_conn->Query(sql));
+                    break;
+                }
+                case SQL_ELEMENT_PREPARED:
+                {
+                    PreparedStatement* stmt = data->element.stmt;
+                    if (stmt)
+                        m_holder->SetPreparedResult(i, m_conn->Query(stmt));
+                    break;
+                }
+            }
+        }
+    }
+
+    m_result.set(m_holder);
+    return true;
+}