public virtual DbParameter AddParameter(DbCommand dm, string name, DbType dbType, int size,
ParameterDirection direction, bool nullable, byte precision, byte scale, string sourceColumn,
DataRowVersion sourceVersion, object value)
{
////if (dbType == DbType.String)
//// throw new Exception("请不要使用DbType.String进行数据库查询！");
if (CheckInjectAttackForSp(dm, value))
{
throw new Exception("输入的部分内容可能对系统稳定性造成影响，操作已停止！[" + value + "]");
}
var param = ProviderFactory.CreateParameter();
if (param != null)
{
param.ParameterName = name;
param.DbType = dbType;
param.Size = size;
param.Value = value ?? DBNull.Value;
param.Direction = direction;
param.IsNullable = nullable;
param.SourceColumn = sourceColumn;
param.SourceVersion = sourceVersion;
dm.Parameters.Add(param);
}
return(param);
}
//************************************************************************
/// <summary>
/// DBプロバイダファクトリに関連付けられたCommandパラメータを作成する。
/// </summary>
/// <param name="argParameterName">パラメータ名</param>
/// <param name="argValue">値</param>
/// <returns>DBプロバイダファクトリに関連付けられたCommandパラメータ</returns>
//************************************************************************
protected IDbDataParameter CreateCmdParam(string argParameterName, object ParameterName)
{
IDbDataParameter param = ProviderFactory.CreateParameter();
param.ParameterName = argParameterName;
param.Value = ParameterName;
return(param);
}
/// <summary>
/// 创建参数
/// </summary>
/// <returns></returns>
protected virtual DbParameter CreateDbParameter(string name, object value, DbType type = DbType.String)
{
DbParameter parameter = ProviderFactory.CreateParameter();
parameter.ParameterName = name;
parameter.Value = value;
parameter.DbType = type;
return(parameter);
}
/// <summary>
///创建CreateDbParameter对象
/// </summary>
/// <param name="name"></param>
/// <param name="value"></param>
/// <param name="dbType"></param>
/// <param name="parameterDirection"></param>
/// <returns></returns>
public DbParameter CreateDbParameter(string name, object value, DbType dbType, ParameterDirection parameterDirection = ParameterDirection.Input)
{
DbParameter parameter = ProviderFactory.CreateParameter();
parameter.ParameterName = name;
parameter.Value = (value ?? "");
parameter.DbType = dbType;
parameter.Direction = parameterDirection;
return(parameter);
}
public IDbDataParameter CreateParameter(string name, object value)
{
var parameter = ProviderFactory.CreateParameter();
if (parameter == null)
{
return(null);
}
parameter.ParameterName = ParameterKey + name;
parameter.Value = value;
return(parameter);
}
/// <summary>
/// Creates a Dbparameter obtaining the information from a DataColumn object.
/// </summary>
/// <param name="paramName">The name for the parameter.</param>
/// <param name="dColumn">The DataColumn object to extract the information from.</param>
/// <returns>A new DBParameter object containing the desired configuration.</returns>
protected DbParameter CreateParameterFromColumn(string paramName, DataColumn dColumn)
{
DbParameter parameter = ProviderFactory.CreateParameter();
if (parameter != null)
{
parameter.ParameterName = paramName;
parameter.DbType = GetDBType(dColumn.DataType);
parameter.SourceColumn = dColumn.ColumnName;
parameter.SourceVersion = DataRowVersion.Current;
return(parameter);
}
return(null);
}
/// <summary>
/// Create a new parameter instance
/// </summary>
/// <param name="pParameterName">Parameter's name</param>
/// <param name="pCompareKind">Compare operation</param>
/// <param name="pValue">Parameter's value</param>
/// <returns>Parameter</returns>
protected RecordParameter CreateParameter(String pParameterName, CompareKind pCompareKind, object pValue)
{
if (ProviderFactory == null)
{
throw new RecordProviderFactoryNullException("Provider Factory is null");
}
DbParameter parameter = (DbParameter)ProviderFactory.CreateParameter();
parameter.ParameterName = pParameterName;
parameter.Value = pValue != null ? pValue : String.Empty;
RecordParameter rparameter = new RecordParameter(parameter, pCompareKind);
return(rparameter);
}
public virtual DbParameter CreateDbParameter(DbParameter parameter)
{
DbParameter dbParameter = ProviderFactory.CreateParameter();
dbParameter.ParameterName = ParameterPrefix + parameter.ParameterName;
dbParameter.Value = parameter.Value;
DbType?dbType = GetDbType(parameter.Value);
if (dbType.HasValue)
{
dbParameter.DbType = dbType.Value;
}
return(dbParameter);
}
public DbParameter CreateParameter(string Name, object value)
{
var p = ProviderFactory.CreateParameter();
p.ParameterName = Name;
if (value != null)
{
p.Value = value;
}
else
{
p.SourceColumnNullMapping = true;
p.Value = DBNull.Value;
}
return(p);
}
protected virtual DbCommand GetDbCommand()
{
var command = ProviderFactory.CreateCommand();
command.Connection = Connection;
command.CommandText = SqlQuery.Sql;
if (SqlQuery.CommandTimeout > 0)
{
command.CommandTimeout = SqlQuery.CommandTimeout;
}
if (SqlQuery.StoredProcedure)
{
command.CommandType = CommandType.StoredProcedure;
}
if (SqlQuery.Parameters != null)
{
foreach (var key in SqlQuery.Parameters.Keys)
{
var obj = SqlQuery.Parameters[key];
var pso = obj as PSObject;
if (pso != null)
{
obj = pso.ImmediateBaseObject;
}
var param = ProviderFactory.CreateParameter();
param.ParameterName = key.ToString();
param.Value = obj;
command.Parameters.Add(param);
WriteVerbose("Adding parameter " + param.ParameterName + "=" + param.Value.ToString());
}
}
if (Transaction == null && SqlQuery.CUD && TransactionContext == null && !NoTrans)
{
WriteVerbose("Starting transaction.");
Transaction = Connection.BeginTransaction();
}
if (Transaction != null)
{
command.Transaction = Transaction;
}
return(command);
}