private void VisitFilterVariable(LiteVariable var)
{
if (var.VariableType == VariableTypeEnum.Const)
{
if (var.ConstValue == null)
{
throw new ApplicationException("Variable的ConstValue==null");
}
string str = SharpTypeHelper.Format(var.ConstValue);
this.sb.Append(str);
}
else if (var.VariableType == VariableTypeEnum.Array)
{
this.sb.Append("(");
this.sb.Append(string.Join(",", var.ConstListValue.ToArray()));
this.sb.Append(")");
}
else if (var.VariableType == VariableTypeEnum.SubQuery)
{
this.sb.Append("(");
this.VisitSubQuery(var.SubQuery);
this.sb.Append(")");
}
else if (var.VariableType == VariableTypeEnum.Field)
{
this.VisitFieldVariable(var);
}
}
public object ConvertFrom(object value, Type targetType)
{
if ((value != null) && (value != DBNull.Value))
{
return(Enum.ToObject(targetType, Convert.ToInt32(value)));
}
return(SharpTypeHelper.GetDefaultValue(targetType));
}
public void SetValue(object obj, Column col, object value)
{
if ((value != null) && (value != DBNull.Value))
{
value = Enum.ToObject(col.DataType, value);
}
else
{
value = SharpTypeHelper.GetDefaultValue(col.DataType);
}
col.PropertyInfo.SetValue(obj, value, null);
}
public void SetValue(object obj, Column col, object value)
{
if ((value != null) && (value != DBNull.Value))
{
Type enumType = col.DataType.GetGenericArguments()[0];
value = Enum.ToObject(enumType, value);
}
else
{
value = SharpTypeHelper.GetDefaultValue(col.DataType);
}
col.PropertyInfo.SetValue(obj, value, null);
}
private void VisitSelectField(LiteField field)
{
if (field.FieldType == LiteFieldTypeEnum.EntityField)
{
if (!string.IsNullOrWhiteSpace(field.TableAlias))
{
this.sb.Append("[");
this.sb.Append(field.TableAlias);
this.sb.Append("].");
}
this.sb.Append("[");
this.sb.Append(field.FieldName);
this.sb.Append("] AS [");
this.sb.Append(field.FieldAlias);
this.sb.Append("]");
}
else if (field.FieldType == LiteFieldTypeEnum.Function)
{
this.sb.Append(field.FunctionName.ToString());
this.sb.Append("(");
if (!string.IsNullOrWhiteSpace(field.TableAlias))
{
this.sb.Append("[");
this.sb.Append(field.TableAlias);
this.sb.Append("].");
}
this.sb.Append("[");
this.sb.Append(field.FieldName);
this.sb.Append("]) AS [");
this.sb.Append(field.FieldAlias);
this.sb.Append("]");
}
else if (field.FieldType == LiteFieldTypeEnum.ConstField)
{
string str = SharpTypeHelper.Format(field.ConstValue);
this.sb.Append(str);
this.sb.Append(" AS [");
this.sb.Append(field.FieldAlias);
this.sb.Append("]");
}
else
{
this.sb.Append("(");
this.VisitSubQuery(field.SubQuery);
this.sb.Append(") AS [");
this.sb.Append(field.FieldAlias);
this.sb.Append("]");
}
}
