1 files changed, 232 insertions, 0 deletions
diff --git a/src/server/database/Database/QueryResult.cpp b/src/server/database/Database/QueryResult.cpp
new file mode 100644
index 00000000000..61a1a682705
--- /dev/null
+++ b/src/server/database/Database/QueryResult.cpp
@@ -0,0 +1,232 @@
+/*
+ * Copyright (C) 2008-2015 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "DatabaseEnv.h"
+#include "Log.h"
+
+ResultSet::ResultSet(MYSQL_RES *result, MYSQL_FIELD *fields, uint64 rowCount, uint32 fieldCount) :
+_rowCount(rowCount),
+_fieldCount(fieldCount),
+_result(result),
+_fields(fields)
+{
+    _currentRow = new Field[_fieldCount];
+    ASSERT(_currentRow);
+}
+
+PreparedResultSet::PreparedResultSet(MYSQL_STMT* stmt, MYSQL_RES *result, uint64 rowCount, uint32 fieldCount) :
+m_rowCount(rowCount),
+m_rowPosition(0),
+m_fieldCount(fieldCount),
+m_rBind(NULL),
+m_stmt(stmt),
+m_res(result),
+m_isNull(NULL),
+m_length(NULL)
+{
+    if (!m_res)
+        return;
+
+    if (m_stmt->bind_result_done)
+    {
+        delete[] m_stmt->bind->length;
+        delete[] m_stmt->bind->is_null;
+    }
+
+    m_rBind = new MYSQL_BIND[m_fieldCount];
+    m_isNull = new my_bool[m_fieldCount];
+    m_length = new unsigned long[m_fieldCount];
+
+    memset(m_isNull, 0, sizeof(my_bool) * m_fieldCount);
+    memset(m_rBind, 0, sizeof(MYSQL_BIND) * m_fieldCount);
+    memset(m_length, 0, sizeof(unsigned long) * m_fieldCount);
+
+    //- This is where we store the (entire) resultset
+    if (mysql_stmt_store_result(m_stmt))
+    {
+        TC_LOG_WARN("sql.sql", "%s:mysql_stmt_store_result, cannot bind result from MySQL server. Error: %s", __FUNCTION__, mysql_stmt_error(m_stmt));
+        delete[] m_rBind;
+        delete[] m_isNull;
+        delete[] m_length;
+        return;
+    }
+
+    //- This is where we prepare the buffer based on metadata
+    uint32 i = 0;
+    MYSQL_FIELD* field = mysql_fetch_field(m_res);
+    while (field)
+    {
+        size_t size = Field::SizeForType(field);
+
+        m_rBind[i].buffer_type = field->type;
+        m_rBind[i].buffer = malloc(size);
+        memset(m_rBind[i].buffer, 0, size);
+        m_rBind[i].buffer_length = size;
+        m_rBind[i].length = &m_length[i];
+        m_rBind[i].is_null = &m_isNull[i];
+        m_rBind[i].error = NULL;
+        m_rBind[i].is_unsigned = field->flags & UNSIGNED_FLAG;
+
+        ++i;
+        field = mysql_fetch_field(m_res);
+    }
+
+    //- This is where we bind the bind the buffer to the statement
+    if (mysql_stmt_bind_result(m_stmt, m_rBind))
+    {
+        TC_LOG_WARN("sql.sql", "%s:mysql_stmt_bind_result, cannot bind result from MySQL server. Error: %s", __FUNCTION__, mysql_stmt_error(m_stmt));
+        delete[] m_rBind;
+        delete[] m_isNull;
+        delete[] m_length;
+        return;
+    }
+
+    m_rowCount = mysql_stmt_num_rows(m_stmt);
+
+    m_rows.resize(uint32(m_rowCount));
+    while (_NextRow())
+    {
+        m_rows[uint32(m_rowPosition)] = new Field[m_fieldCount];
+        for (uint64 fIndex = 0; fIndex < m_fieldCount; ++fIndex)
+        {
+            if (!*m_rBind[fIndex].is_null)
+                m_rows[uint32(m_rowPosition)][fIndex].SetByteValue(m_rBind[fIndex].buffer,
+                                                            m_rBind[fIndex].buffer_length,
+                                                            m_rBind[fIndex].buffer_type,
+                                                           *m_rBind[fIndex].length);
+            else
+                switch (m_rBind[fIndex].buffer_type)
+                {
+                    case MYSQL_TYPE_TINY_BLOB:
+                    case MYSQL_TYPE_MEDIUM_BLOB:
+                    case MYSQL_TYPE_LONG_BLOB:
+                    case MYSQL_TYPE_BLOB:
+                    case MYSQL_TYPE_STRING:
+                    case MYSQL_TYPE_VAR_STRING:
+                    m_rows[uint32(m_rowPosition)][fIndex].SetByteValue("",
+                                                            m_rBind[fIndex].buffer_length,
+                                                            m_rBind[fIndex].buffer_type,
+                                                           *m_rBind[fIndex].length);
+                    break;
+                    default:
+                    m_rows[uint32(m_rowPosition)][fIndex].SetByteValue(nullptr,
+                                                            m_rBind[fIndex].buffer_length,
+                                                            m_rBind[fIndex].buffer_type,
+                                                           *m_rBind[fIndex].length);
+                }
+        }
+        m_rowPosition++;
+    }
+    m_rowPosition = 0;
+
+    /// All data is buffered, let go of mysql c api structures
+    CleanUp();
+}
+
+ResultSet::~ResultSet()
+{
+    CleanUp();
+}
+
+PreparedResultSet::~PreparedResultSet()
+{
+    for (uint32 i = 0; i < uint32(m_rowCount); ++i)
+        delete[] m_rows[i];
+}
+
+bool ResultSet::NextRow()
+{
+    MYSQL_ROW row;
+
+    if (!_result)
+        return false;
+
+    row = mysql_fetch_row(_result);
+    if (!row)
+    {
+        CleanUp();
+        return false;
+    }
+
+    unsigned long* lengths = mysql_fetch_lengths(_result);
+    if (!lengths)
+    {
+        TC_LOG_WARN("sql.sql", "%s:mysql_fetch_lengths, cannot retrieve value lengths. Error %s.", __FUNCTION__, mysql_error(_result->handle));
+        CleanUp();
+        return false;
+    }
+
+    for (uint32 i = 0; i < _fieldCount; i++)
+        _currentRow[i].SetStructuredValue(row[i], _fields[i].type, lengths[i]);
+
+    return true;
+}
+
+bool PreparedResultSet::NextRow()
+{
+    /// Only updates the m_rowPosition so upper level code knows in which element
+    /// of the rows vector to look
+    if (++m_rowPosition >= m_rowCount)
+        return false;
+
+    return true;
+}
+
+bool PreparedResultSet::_NextRow()
+{
+    /// Only called in low-level code, namely the constructor
+    /// Will iterate over every row of data and buffer it
+    if (m_rowPosition >= m_rowCount)
+        return false;
+
+    int retval = mysql_stmt_fetch(m_stmt);
+    return retval == 0 || retval == MYSQL_DATA_TRUNCATED;
+}
+
+void ResultSet::CleanUp()
+{
+    if (_currentRow)
+    {
+        delete [] _currentRow;
+        _currentRow = NULL;
+    }
+
+    if (_result)
+    {
+        mysql_free_result(_result);
+        _result = NULL;
+    }
+}
+
+void PreparedResultSet::CleanUp()
+{
+    /// More of the in our code allocated sources are deallocated by the poorly documented mysql c api
+    if (m_res)
+        mysql_free_result(m_res);
+
+    FreeBindBuffer();
+    mysql_stmt_free_result(m_stmt);
+
+    delete[] m_rBind;
+}
+
+void PreparedResultSet::FreeBindBuffer()
+{
+    for (uint32 i = 0; i < m_fieldCount; ++i)
+        free (m_rBind[i].buffer);
+}