public static List <ColumnInfo> ColumnInfoFromType(object atype)
{
if (atype == null)
{
return(null);
}
Type t = atype.GetType();
PropertyInfo[] props = t.GetProperties();
List <ColumnInfo> dict = new List <ColumnInfo>();
foreach (PropertyInfo prp in props)
{
var attributes = prp.GetCustomAttributes(false);
var columnattributesa = attributes.Where(a => a.GetType() == typeof(ExcludeAttribute));
var column = columnattributesa.FirstOrDefault(a => a.GetType() == typeof(ExcludeAttribute));
ExcludeAttribute ea = column as ExcludeAttribute;
if (ea is null)
{
ColumnInfo cinfo = new ColumnInfo();
cinfo.ColumnValue = prp.GetValue(atype, new object[] { });
//Column Name
var columnattributes = attributes.Where(a => a.GetType() == typeof(DbColumnAttribute));
column = columnattributes.FirstOrDefault(a => a.GetType() == typeof(DbColumnAttribute));
DbColumnAttribute cl = column as DbColumnAttribute;
cinfo.ColumnName = cl.Name;
//Autoincrument
var Attrib = attributes.Where(a => a.GetType() == typeof(AutoIncrementAttribute));
column = Attrib.FirstOrDefault(a => a.GetType() == typeof(AutoIncrementAttribute));
AutoIncrementAttribute ai = column as AutoIncrementAttribute;
cinfo.AutoIncrement = (ai is null) ? false : ai.Value;
//Primary Key
Attrib = attributes.Where(a => a.GetType() == typeof(PrimaryKeyAttribute));
column = Attrib.FirstOrDefault(a => a.GetType() == typeof(PrimaryKeyAttribute));
PrimaryKeyAttribute pk = column as PrimaryKeyAttribute;
cinfo.PrimaryKey = (pk is null) ? false : pk.Value;
//AllowNullAttribute
Attrib = attributes.Where(a => a.GetType() == typeof(AllowNullAttribute));
column = Attrib.FirstOrDefault(a => a.GetType() == typeof(AllowNullAttribute));
AllowNullAttribute an = column as AllowNullAttribute;
cinfo.AllowNull = (an is null) ? false : an.Value;
//DataTypeAttribute
Attrib = attributes.Where(a => a.GetType() == typeof(DataTypeAttribute));
column = Attrib.FirstOrDefault(a => a.GetType() == typeof(DataTypeAttribute));
DataTypeAttribute dt = column as DataTypeAttribute;
cinfo.DataType = dt.Value;
//DonotSelect
Attrib = attributes.Where(a => a.GetType() == typeof(DoNotSelectAttribute));
column = Attrib.FirstOrDefault(a => a.GetType() == typeof(DoNotSelectAttribute));
DoNotSelectAttribute ds = column as DoNotSelectAttribute;
cinfo.DoNotSelect = (ds is null) ? false : ds.Value;
dict.Add(cinfo);
}
}
return(dict);
}
/// <summary>
/// Processes the Attribute metadata to generate a CompiledCommandAttribute.
/// </summary>
/// <exception cref="MetadataException">
/// If the attribute is a parameter attribute and another parameter attribute
/// has been processed with the same parameter-set name.
/// </exception>
private void ProcessAttribute(
string memberName,
Attribute attribute,
ref Collection <ValidateArgumentsAttribute> validationAttributes,
ref Collection <ArgumentTransformationAttribute> argTransformationAttributes,
ref string[] aliases)
{
if (attribute == null)
{
return;
}
CompiledAttributes.Add(attribute);
// Now process the attribute based on it's type
if (attribute is ParameterAttribute paramAttr)
{
ProcessParameterAttribute(memberName, paramAttr);
return;
}
ValidateArgumentsAttribute validateAttr = attribute as ValidateArgumentsAttribute;
if (validateAttr != null)
{
if (validationAttributes == null)
{
validationAttributes = new Collection <ValidateArgumentsAttribute>();
}
validationAttributes.Add(validateAttr);
if ((attribute is ValidateNotNullAttribute) || (attribute is ValidateNotNullOrEmptyAttribute))
{
this.CannotBeNull = true;
}
return;
}
AliasAttribute aliasAttr = attribute as AliasAttribute;
if (aliasAttr != null)
{
if (aliases == null)
{
aliases = aliasAttr.aliasNames;
}
else
{
var prevAliasNames = aliases;
var newAliasNames = aliasAttr.aliasNames;
aliases = new string[prevAliasNames.Length + newAliasNames.Length];
Array.Copy(prevAliasNames, aliases, prevAliasNames.Length);
Array.Copy(newAliasNames, 0, aliases, prevAliasNames.Length, newAliasNames.Length);
}
return;
}
ArgumentTransformationAttribute argumentAttr = attribute as ArgumentTransformationAttribute;
if (argumentAttr != null)
{
if (argTransformationAttributes == null)
{
argTransformationAttributes = new Collection <ArgumentTransformationAttribute>();
}
argTransformationAttributes.Add(argumentAttr);
return;
}
AllowNullAttribute allowNullAttribute = attribute as AllowNullAttribute;
if (allowNullAttribute != null)
{
this.AllowsNullArgument = true;
return;
}
AllowEmptyStringAttribute allowEmptyStringAttribute = attribute as AllowEmptyStringAttribute;
if (allowEmptyStringAttribute != null)
{
this.AllowsEmptyStringArgument = true;
return;
}
AllowEmptyCollectionAttribute allowEmptyCollectionAttribute = attribute as AllowEmptyCollectionAttribute;
if (allowEmptyCollectionAttribute != null)
{
this.AllowsEmptyCollectionArgument = true;
return;
}
ObsoleteAttribute obsoleteAttr = attribute as ObsoleteAttribute;
if (obsoleteAttr != null)
{
ObsoleteAttribute = obsoleteAttr;
return;
}
PSTypeNameAttribute psTypeNameAttribute = attribute as PSTypeNameAttribute;
if (psTypeNameAttribute != null)
{
this.PSTypeName = psTypeNameAttribute.PSTypeName;
}
}
