public virtual IDbDataParameter AddParameter(IDbCommand command, DbParamInfo prmInfo)
{
var prm = command.CreateParameter();
var typeInfo = prmInfo.TypeInfo;
prm.DbType = typeInfo.VendorDbType.DbType;
prm.Direction = prmInfo.Direction;
prm.ParameterName = prmInfo.Name;
if (typeInfo.Precision > 0) prm.Precision = typeInfo.Precision;
if (typeInfo.Scale > 0) prm.Scale = typeInfo.Scale;
if (typeInfo.Size > 0) prm.Size = (int) typeInfo.Size;
prm.Value = prmInfo.DefaultValue;
command.Parameters.Add(prm);
return prm;
}
private DbParamInfo AddParameter(DbParamInfo parameter)
{
Parameters.Add(parameter);
switch (parameter.Direction)
{
case ParameterDirection.Output:
case ParameterDirection.InputOutput:
OutputParameters.Add(parameter);
break;
case ParameterDirection.ReturnValue:
ReturnValueParameter = parameter;
break;
}
return(parameter);
}
public override IDbDataParameter AddParameter(IDbCommand command, DbParamInfo prmInfo)
{
var prm = (MySqlParameter)base.AddParameter(command, prmInfo);
prm.MySqlDbType = (MySqlDbType)prmInfo.TypeInfo.VendorDbType.VendorDbType;
return prm;
}
private DbParamInfo AddParameter(DbParamInfo parameter)
{
Parameters.Add(parameter);
switch (parameter.Direction) {
case ParameterDirection.Output:
case ParameterDirection.InputOutput:
OutputParameters.Add(parameter);
break;
case ParameterDirection.ReturnValue:
ReturnValueParameter = parameter;
break;
}
return parameter;
}
//Creates default implementation for servers that do not support array parameters.
// The command is implemented as templated SQL
public virtual DbCommandInfo BuildSelectByKeyArrayCommand(EntityCommand entityCommand)
{
const string SqlSelectByFkTemplate = @"
SELECT {0} {1}
FROM {2}
WHERE {3}
{4}";
var table = DbModel.LookupDbObject<DbTableInfo>(entityCommand.TargetEntityInfo, throwNotFound: true);
var dbKey = DbModel.LookupDbObject<DbKeyInfo>(entityCommand.SelectKey);
if (dbKey.KeyColumns.Count > 1)
return null;
var keyCol = dbKey.KeyColumns[0].Column.ColumnName;
var cmdName = ModelConfig.NamingPolicy.ConstructDbCommandName(entityCommand, table.TableName, "SelectByArrayOf_", keyCol);
var descrTag = GetDbCommandDescriptiveTag(entityCommand);
var cmdInfo = new DbCommandInfo(entityCommand, cmdName, table, DbExecutionType.Reader, null, descrTag);
cmdInfo.IsTemplatedSql = true;
//Build column list
var outColumns = table.Columns.GetSelectable();
var strColumns = outColumns.GetSqlNameList();
//build WHERE clause
var whereExpr = '"' + keyCol + '"' + " IN ({0})"; //this {0} will remain in a template
if (!string.IsNullOrWhiteSpace(entityCommand.Filter))
whereExpr = whereExpr + " AND " + ProcessFilter(entityCommand, table);
string orderByExpr = null;
if (dbKey.KeyType == KeyType.PrimaryKey)
orderByExpr = null;
else
orderByExpr = BuildOrderBy(table.DefaultOrderBy);
string strTop = string.Empty;
var sql = string.Format(SqlSelectByFkTemplate, strTop, strColumns, table.FullName, whereExpr, orderByExpr);
sql = sql.Trim() + ";";
cmdInfo.Sql = sql;
cmdInfo.EntityMaterializer = CreateEntityMaterializer(table, outColumns);
//Create parameter for just-in-time formatting of SQL
var entPrm = entityCommand.Parameters[0];
Type elemType;
Util.Check(entPrm.DataType.IsListOfDbPrimitive(out elemType), "Parameter is not list of primitives.");
var elemTypeInfo = GetDbTypeInfo(elemType, 0);
Util.Check(elemTypeInfo != null, "Failed to get db type information for type {0}.", elemType);
var prm = new DbParamInfo(entPrm, "(array)", 0);
prm.ToLiteralConverter = (list) => ConvertList(list, elemTypeInfo);
cmdInfo.Parameters.Add(prm);
return cmdInfo;
}
private bool BatchShouldUseParameterFor(DbParamInfo paramInfo, object value)
{
if (paramInfo.Direction != ParameterDirection.Input)
return true;
if (value == DBNull.Value)
return false;
var t = value.GetType();
if (t == typeof(string)) {
var str = (string)value;
return str.Length > MaxLiteralLength;
}
if (t == typeof(byte[])) {
var bytes = (byte[])value;
return bytes.Length > MaxLiteralLength;
}
return false;
}
public override IDbDataParameter AddParameter(IDbCommand command, DbParamInfo prmInfo)
{
var prm = (SqlParameter)base.AddParameter(command, prmInfo);
prm.SqlDbType = (SqlDbType)prmInfo.TypeInfo.VendorDbType.VendorDbType;
//Set User type name
switch(prm.SqlDbType) {
case SqlDbType.Udt:
prm.UdtTypeName = prmInfo.TypeInfo.SqlTypeSpec;
break;
case SqlDbType.Structured:
prm.TypeName = prmInfo.TypeInfo.SqlTypeSpec;
break;
}
return prm;
}
