public virtual IStatement ReadStatementAttribute(Type commandType)
{
S statement = Activator.CreateInstance<S>();
StatementAttribute statementAttribute = (StatementAttribute)Attribute.GetCustomAttribute(commandType, typeof(StatementAttribute), true);
SA oracleStatementAttribute = (SA)Attribute.GetCustomAttribute(commandType, typeof(SA), true);
if (statementAttribute == null)
{
if (oracleStatementAttribute != null)
{
throw AttributeException.StatementAttributeNotFoundException(commandType, typeof(SA));
}
else
{
return null;
}
}
SetStatementValue(statement,commandType, statementAttribute, oracleStatementAttribute);
return statement;
}
protected void SetStatementValue(S statement, Type entityType, StatementAttribute statementAttribute, StatementAttributeBase statementAttributeBase)
{
statement.CommandBehavior = statementAttribute.CommandBehavior;
switch (statementAttribute.CommandType)
{
case AttributeCommandType.Null:
case AttributeCommandType.StoredProcedure:
statement.CommandType = CommandType.StoredProcedure;
break;
case AttributeCommandType.TableDirect:
statement.CommandType = CommandType.TableDirect;
break;
case AttributeCommandType.Text:
statement.CommandType = CommandType.Text;
break;
}
statement.CommandText = string.IsNullOrWhiteSpace(statementAttribute.CommandText) ? entityType.Name : statementAttribute.CommandText;
statement.Parameters = new Dictionary<string, IParameter>(StringComparer.OrdinalIgnoreCase);
PropertyInfo[] propertyInfos = entityType.GetProperties();
foreach (PropertyInfo propertyInfo in propertyInfos)
{
IParameter parameter = ReadParameterAttribute(propertyInfo);
if (parameter != null)
{
statement.Parameters.Add(propertyInfo.Name, parameter);
}
}
FieldInfo[] fieldInfos = entityType.GetFields();
foreach (FieldInfo fieldInfo in fieldInfos)
{
IParameter parameter = ReadParameterAttribute(fieldInfo);
if (parameter != null)
{
statement.Parameters.Add(fieldInfo.Name, parameter);
}
}
#region 覆盖
if (statementAttributeBase != null)
{
if (statementAttributeBase.CommandType != AttributeCommandType.Null)
{
switch (statementAttributeBase.CommandType)
{
case AttributeCommandType.StoredProcedure:
statement.CommandType = CommandType.StoredProcedure;
break;
case AttributeCommandType.TableDirect:
statement.CommandType = CommandType.TableDirect;
break;
case AttributeCommandType.Text:
statement.CommandType = CommandType.Text;
break;
}
}
if (!string.IsNullOrWhiteSpace(statementAttributeBase.CommandText))
{
statement.CommandText = statementAttributeBase.CommandText;//覆盖
}
}
#endregion
}