// That function MUST return the string representation of a parameter. Also, it creates a SqlParameter object and stores it
/// <summary>
/// Creates a derived IDbDataParameter for the table and fields specified
/// </summary>
/// <param name="table">Name of the table of the field asscoiated to the param</param>
/// <param name="field">Name of the field associated to the parameter</param>
/// <param name="nparam">Ordinal position of the parameter (0 is first)</param>
/// <param name="tableInfo">Hashtable with the schema of the table</param>
/// <param name="stringRep">Representation of the parameter in the SQL String (:param)</param>
/// <param name="bOriginalVersion">If true the value of the parameter is bound to the original version of the value in the datarow</param>
/// <returns>The newly created parameter object</returns>
public IDataParameter CreateParameter(string table, string field, int nparam, Hashtable tableInfo, out string stringRep, bool bOriginalVersion)
{
stringRep = ":param" + nparam;
FieldSchemaInfo fieldInfo = (FieldSchemaInfo)tableInfo[field];
// Creates an Oracle parameter (names :paramX) where X is the ordinal (0-based)
OracleParameter param = new OracleParameter();
param.ParameterName = "param" + nparam;
param.SourceColumn = field;
param.OracleDbType = (OracleDbType)fieldInfo.NativeType;
if (fieldInfo.FieldSize != -1)
{
param.Size = fieldInfo.FieldSize;
}
if (bOriginalVersion)
{
param.SourceVersion = DataRowVersion.Original;
}
return(param);
}
// That function MUST return the string representation of a parameter. Also, it creates a SqlParameter object and stores it
/// <summary>
/// Creates a derived IDbDataParameter for the table and fields specified
/// </summary>
/// <param name="table">Name of the table of the field asscoiated to the param</param>
/// <param name="field">Name of the field associated to the parameter</param>
/// <param name="nparam">Ordinal position of the parameter (0 is first)</param>
/// <param name="tableInfo">Hashtable with the schema of the table</param>
/// <param name="stringRep">Representation of the parameter in the SQL String (@param)</param>
/// <param name="bOriginalVersion">If true the value of the parameter is bound to the original version of the value in the datarow</param>
/// <returns>The newly created parameter object</returns>
public IDataParameter CreateParameter(string table, string field, int nparam, Hashtable tableInfo, out string stringRep, bool bOriginalVersion)
{
stringRep = "@param" + nparam;
FieldSchemaInfo fieldInfo = (FieldSchemaInfo)tableInfo[field];
// Creates a EMPTY parameter (OLEDB params cannot be filled).
System.Data.SqlClient.SqlParameter param = new System.Data.SqlClient.SqlParameter();
param.ParameterName = "param" + nparam;
param.SourceColumn = field;
param.SqlDbType = (System.Data.SqlDbType)fieldInfo.NativeType;
if (fieldInfo.FieldSize != -1)
{
param.Size = fieldInfo.FieldSize;
}
if (bOriginalVersion)
{
param.SourceVersion = DataRowVersion.Original;
}
return(param);
}