esDataResponse IDataProvider.FillDataTable(esDataRequest request)
{
esDataResponse response = new esDataResponse();
try
{
switch (request.QueryType)
{
case esQueryType.StoredProcedure:
response = LoadDataTableFromStoredProcedure(request);
break;
case esQueryType.Text:
response = LoadDataTableFromText(request);
break;
default:
break;
}
}
catch (Exception ex)
{
response.Exception = ex;
}
return(response);
}
esDataResponse IDataProvider.esSaveDataTable(esDataRequest request)
{
esDataResponse response = new esDataResponse();
try
{
if (request.EntitySavePacket.CurrentValues == null)
{
SaveDynamicCollection(request);
}
else
{
SaveDynamicEntity(request);
}
}
catch (SqlCeException ex)
{
esException es = Shared.CheckForConcurrencyException(ex);
if (es != null)
{
response.Exception = es;
}
else
{
response.Exception = ex;
}
}
catch (DBConcurrencyException dbex)
{
response.Exception = new esConcurrencyException("Error in SqlServerCeProvider.esSaveDataTable", dbex);
}
response.Table = request.Table;
return(response);
}
esDataResponse IDataProvider.ExecuteNonQuery(esDataRequest request)
{
esDataResponse response = new esDataResponse();
VistaDBCommand cmd = null;
try
{
cmd = new VistaDBCommand();
if (request.CommandTimeout != null)
{
cmd.CommandTimeout = request.CommandTimeout.Value;
}
if (request.Parameters != null)
{
Shared.AddParameters(cmd, request);
}
switch (request.QueryType)
{
case esQueryType.TableDirect:
cmd.CommandType = CommandType.TableDirect;
cmd.CommandText = request.QueryText;
break;
case esQueryType.StoredProcedure:
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = Shared.CreateFullName(request);
break;
case esQueryType.Text:
cmd.CommandType = CommandType.Text;
cmd.CommandText = request.QueryText;
break;
}
try
{
esTransactionScope.Enlist(cmd, request.ConnectionString, CreateIDbConnectionDelegate);
response.RowsEffected = cmd.ExecuteNonQuery();
}
finally
{
esTransactionScope.DeEnlist(cmd);
}
if (request.Parameters != null)
{
Shared.GatherReturnParameters(cmd, request, response);
}
}
catch (Exception ex)
{
CleanupCommand(cmd);
response.Exception = ex;
}
return(response);
}
esDataResponse IDataProvider.esLoadDataTable(esDataRequest request)
{
esDataResponse response = new esDataResponse();
try
{
switch (request.QueryType)
{
case esQueryType.StoredProcedure:
response = LoadDataTableFromStoredProcedure(request);
break;
case esQueryType.Text:
response = LoadDataTableFromText(request);
break;
case esQueryType.DynamicQuery:
response = new esDataResponse();
SACommand cmd = QueryBuilder.PrepareCommand(request);
LoadDataTableFromDynamicQuery(request, response, cmd);
break;
case esQueryType.DynamicQueryParseOnly:
response = new esDataResponse();
SACommand cmd1 = QueryBuilder.PrepareCommand(request);
response.LastQuery = cmd1.CommandText;
break;
#if (LINQ)
case esQueryType.IQueryable:
response = new esDataResponse();
LoadDataTableForLinqToSql(request, response);
break;
#endif
case esQueryType.ManyToMany:
response = LoadManyToMany(request);
break;
default:
break;
}
}
catch (Exception ex)
{
response.Exception = ex;
}
return(response);
}
static private esDataResponse LoadDataSetFromStoredProcedure(esDataRequest request)
{
esDataResponse response = new esDataResponse();
VistaDBCommand cmd = null;
try
{
DataSet dataSet = new DataSet();
cmd = new VistaDBCommand();
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = Shared.CreateFullName(request);
if (request.CommandTimeout != null)
{
cmd.CommandTimeout = request.CommandTimeout.Value;
}
if (request.Parameters != null)
{
Shared.AddParameters(cmd, request);
}
VistaDBDataAdapter da = new VistaDBDataAdapter();
da.SelectCommand = cmd;
try
{
esTransactionScope.Enlist(da.SelectCommand, request.ConnectionString, CreateIDbConnectionDelegate);
da.Fill(dataSet);
}
finally
{
esTransactionScope.DeEnlist(da.SelectCommand);
}
response.DataSet = dataSet;
if (request.Parameters != null)
{
Shared.GatherReturnParameters(cmd, request, response);
}
}
catch (Exception)
{
CleanupCommand(cmd);
throw;
}
finally
{
}
return(response);
}
esDataResponse IDataProvider.ExecuteReader(esDataRequest request)
{
esDataResponse response = new esDataResponse();
VistaDBCommand cmd = null;
try
{
cmd = new VistaDBCommand();
if (request.CommandTimeout != null)
{
cmd.CommandTimeout = request.CommandTimeout.Value;
}
if (request.Parameters != null)
{
Shared.AddParameters(cmd, request);
}
switch (request.QueryType)
{
case esQueryType.TableDirect:
cmd.CommandType = CommandType.TableDirect;
cmd.CommandText = request.QueryText;
break;
case esQueryType.StoredProcedure:
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = Shared.CreateFullName(request);
break;
case esQueryType.Text:
cmd.CommandType = CommandType.Text;
cmd.CommandText = request.QueryText;
break;
case esQueryType.DynamicQuery:
cmd = QueryBuilder.PrepareCommand(request);
break;
}
cmd.Connection = new VistaDBConnection(request.ConnectionString);
cmd.Connection.Open();
response.DataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
catch (Exception ex)
{
CleanupCommand(cmd);
response.Exception = ex;
}
return(response);
}
static private esDataResponse LoadDataTableFromText(esDataRequest request)
{
esDataResponse response = new esDataResponse();
SACommand cmd = null;
try
{
DataTable dataTable = new DataTable(request.ProviderMetadata.Destination);
cmd = new SACommand();
cmd.CommandType = CommandType.Text;
if (request.CommandTimeout != null)
{
cmd.CommandTimeout = request.CommandTimeout.Value;
}
if (request.Parameters != null)
{
Shared.AddParameters(cmd, request);
}
SADataAdapter da = new SADataAdapter();
cmd.CommandText = request.QueryText;
da.SelectCommand = cmd;
try
{
esTransactionScope.Enlist(da.SelectCommand, request.ConnectionString, CreateIDbConnectionDelegate);
da.Fill(dataTable);
}
finally
{
esTransactionScope.DeEnlist(da.SelectCommand);
}
response.Table = dataTable;
if (request.Parameters != null)
{
Shared.GatherReturnParameters(cmd, request, response);
}
}
catch (Exception)
{
CleanupCommand(cmd);
throw;
}
finally
{
}
return(response);
}
static private esDataResponse LoadDataSetFromText(esDataRequest request)
{
esDataResponse response = new esDataResponse();
SqlCeCommand cmd = null;
try
{
DataSet dataSet = new DataSet();
cmd = new SqlCeCommand();
if (request.CommandTimeout != null)
{
cmd.CommandTimeout = request.CommandTimeout.Value;
}
if (request.Parameters != null)
{
Shared.AddParameters(cmd, request);
}
SqlCeDataAdapter da = new SqlCeDataAdapter();
cmd.CommandText = request.QueryText;
da.SelectCommand = cmd;
try
{
esTransactionScope.Enlist(da.SelectCommand, request.ConnectionString, CreateIDbConnectionDelegate);
da.Fill(dataSet);
}
finally
{
esTransactionScope.DeEnlist(da.SelectCommand);
}
response.DataSet = dataSet;
if (request.Parameters != null)
{
Shared.GatherReturnParameters(cmd, request, response);
}
}
catch (Exception ex)
{
CleanupCommand(cmd);
throw ex;
}
finally
{
}
return(response);
}
esDataResponse IDataProvider.esSaveDataTable(esDataRequest request)
{
esDataResponse response = new esDataResponse();
try
{
if (request.SqlAccessType == esSqlAccessType.StoredProcedure)
{
if (request.CollectionSavePacket != null)
{
SaveStoredProcCollection(request);
}
else
{
SaveStoredProcEntity(request);
}
}
else
{
if (request.EntitySavePacket.CurrentValues == null)
{
SaveDynamicCollection(request);
}
else
{
SaveDynamicEntity(request);
}
}
}
catch (VistaDBException ex)
{
esException es = Shared.CheckForConcurrencyException(ex);
if (es != null)
{
response.Exception = es;
}
else
{
response.Exception = ex;
}
}
catch (DBConcurrencyException dbex)
{
response.Exception = new esConcurrencyException("Error in VistaDBProvider.esSaveDataTable", dbex);
}
response.Table = request.Table;
return(response);
}
// This is used only to execute the Dynamic Query API
static private void LoadDataTableFromDynamicQuery(esDataRequest request, esDataResponse response, VistaDBCommand cmd)
{
try
{
response.LastQuery = cmd.CommandText;
if (request.CommandTimeout != null)
{
cmd.CommandTimeout = request.CommandTimeout.Value;
}
DataTable dataTable = new DataTable(request.ProviderMetadata.Destination);
VistaDBDataAdapter da = new VistaDBDataAdapter();
da.SelectCommand = cmd;
try
{
esTransactionScope.Enlist(da.SelectCommand, request.ConnectionString, CreateIDbConnectionDelegate);
da.Fill(dataTable);
}
finally
{
esTransactionScope.DeEnlist(da.SelectCommand);
}
response.Table = dataTable;
}
catch (Exception)
{
CleanupCommand(cmd);
throw;
}
finally
{
}
}
static public void GatherReturnParameters(VistaDBCommand cmd, esDataRequest request, esDataResponse response)
{
if (cmd.Parameters.Count > 0)
{
if (request.Parameters != null && request.Parameters.Count > 0)
{
response.Parameters = new esParameters();
foreach (esParameter esParam in request.Parameters)
{
if (esParam.Direction != esParameterDirection.Input)
{
response.Parameters.Add(esParam);
VistaDBParameter p = cmd.Parameters[Delimiters.Param + esParam.Name];
esParam.Value = p.Value;
}
}
}
}
}
static public void GatherReturnParameters(OracleCommand cmd, esDataRequest request, esDataResponse response)
{
if (cmd.Parameters.Count > 0)
{
if (request.Parameters != null && request.Parameters.Count > 0)
{
string paramPrefix = request.QueryType == esQueryType.StoredProcedure ? String.Empty : Delimiters.Param;
paramPrefix = request.ProviderMetadata.spLoadByPrimaryKey == request.QueryText ? "p" : paramPrefix;
response.Parameters = new esParameters();
foreach (esParameter esParam in request.Parameters)
{
if (esParam.Direction != esParameterDirection.Input)
{
response.Parameters.Add(esParam);
OracleParameter p = cmd.Parameters[paramPrefix + esParam.Name];
esParam.Value = p.Value;
}
}
}
}
}
static public void GatherReturnParameters(MySqlCommand cmd, esDataRequest request, esDataResponse response)
{
if (cmd.Parameters.Count > 0)
{
if (request.Parameters != null && request.Parameters.Count > 0)
{
string paramPrefix = request.ProviderMetadata.spLoadByPrimaryKey == cmd.CommandText ? Delimiters.Param + "p" : Delimiters.Param;
response.Parameters = new esParameters();
foreach (esParameter esParam in request.Parameters)
{
if (esParam.Direction != esParameterDirection.Input)
{
response.Parameters.Add(esParam);
MySqlParameter p = cmd.Parameters[paramPrefix + esParam.Name];
esParam.Value = p.Value;
}
}
}
}
}
static private esDataResponse LoadManyToMany(esDataRequest request)
{
esDataResponse response = new esDataResponse();
VistaDBCommand cmd = null;
try
{
DataTable dataTable = new DataTable(request.ProviderMetadata.Destination);
cmd = new VistaDBCommand();
cmd.CommandType = CommandType.Text;
if (request.CommandTimeout != null)
{
cmd.CommandTimeout = request.CommandTimeout.Value;
}
string mmQuery = request.QueryText;
string[] sections = mmQuery.Split('|');
string[] tables = sections[0].Split(',');
string[] columns = sections[1].Split(',');
// We build the query, we don't use Delimiters to avoid tons of extra concatentation
string sql = "SELECT * FROM [" + tables[0];
sql += "] JOIN [" + tables[1] + "] ON [" + tables[0] + "].[" + columns[0] + "] = [";
sql += tables[1] + "].[" + columns[1];
sql += "] WHERE [" + tables[1] + "].[" + sections[2] + "] = @";
if (request.Parameters != null)
{
foreach (esParameter esParam in request.Parameters)
{
sql += esParam.Name;
}
Shared.AddParameters(cmd, request);
}
VistaDBDataAdapter da = new VistaDBDataAdapter();
cmd.CommandText = sql;
da.SelectCommand = cmd;
try
{
esTransactionScope.Enlist(da.SelectCommand, request.ConnectionString, CreateIDbConnectionDelegate);
da.Fill(dataTable);
}
finally
{
esTransactionScope.DeEnlist(da.SelectCommand);
}
response.Table = dataTable;
}
catch (Exception)
{
CleanupCommand(cmd);
throw;
}
finally
{
}
return(response);
}
static private esDataResponse LoadManyToMany(esDataRequest request)
{
esDataResponse response = new esDataResponse();
SACommand cmd = null;
try
{
DataTable dataTable = new DataTable(request.ProviderMetadata.Destination);
cmd = new SACommand();
cmd.CommandType = CommandType.Text;
if (request.CommandTimeout != null)
{
cmd.CommandTimeout = request.CommandTimeout.Value;
}
string mmQuery = request.QueryText;
string[] sections = mmQuery.Split('|');
string[] tables = sections[0].Split(',');
string[] columns = sections[1].Split(',');
string prefix = String.Empty;
if (request.Catalog != null || request.ProviderMetadata.Catalog != null)
{
prefix += Delimiters.TableOpen;
prefix += request.Catalog != null ? request.Catalog : request.ProviderMetadata.Catalog;
prefix += Delimiters.TableClose + ".";
}
if (request.Schema != null || request.ProviderMetadata.Schema != null)
{
prefix += Delimiters.TableOpen;
prefix += request.Schema != null ? request.Schema : request.ProviderMetadata.Schema;
prefix += Delimiters.TableClose + ".";
}
string table0 = prefix + Delimiters.TableOpen + tables[0] + Delimiters.TableClose;
string table1 = prefix + Delimiters.TableOpen + tables[1] + Delimiters.TableClose;
string sql = "SELECT * FROM " + table0 + " JOIN " + table1 + " ON " + table0 + ".[" + columns[0] + "] = ";
sql += table1 + ".[" + columns[1] + "] WHERE " + table1 + ".[" + sections[2] + "] = ?";
if (request.Parameters != null)
{
Shared.AddParameters(cmd, request);
}
SADataAdapter da = new SADataAdapter();
cmd.CommandText = sql;
da.SelectCommand = cmd;
try
{
esTransactionScope.Enlist(da.SelectCommand, request.ConnectionString, CreateIDbConnectionDelegate);
da.Fill(dataTable);
}
finally
{
esTransactionScope.DeEnlist(da.SelectCommand);
}
response.Table = dataTable;
}
catch (Exception)
{
CleanupCommand(cmd);
throw;
}
finally
{
}
return(response);
}
// This is used only to execute the Dynamic Query API
static private void LoadDataTableForLinqToSql(esDataRequest request, esDataResponse response)
{
}