134 lines
3.3 KiB
C#
134 lines
3.3 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Reflection;
|
|
using System.Web;
|
|
using System.Web.DynamicData;
|
|
using System.Web.DynamicData.ModelProviders;
|
|
|
|
using MonoTests.DataSource;
|
|
|
|
namespace MonoTests.ModelProviders
|
|
{
|
|
public class DynamicDataContainerColumnProvider <T> : ColumnProvider
|
|
{
|
|
DynamicDataColumn column;
|
|
bool associationResolved;
|
|
|
|
public override AssociationProvider Association {
|
|
get {
|
|
ResolveAssociations ();
|
|
return base.Association;
|
|
}
|
|
|
|
protected set {
|
|
base.Association = value;
|
|
}
|
|
}
|
|
|
|
public DynamicDataContainerColumnProvider (DynamicDataContainerTableProvider <T> owner, DynamicDataColumn column)
|
|
: base (owner)
|
|
{
|
|
if (column == null)
|
|
throw new ArgumentNullException ("column");
|
|
|
|
this.column = column;
|
|
|
|
Type columnType = column.DataType;
|
|
if (columnType == null)
|
|
throw new InvalidOperationException ("column.TContext must not be null for column '" + column.Name + "'");
|
|
|
|
Name = column.Name;
|
|
ColumnType = columnType;
|
|
Nullable = columnType.IsGenericType && typeof (Nullable<>).IsAssignableFrom (columnType.GetGenericTypeDefinition ());
|
|
IsPrimaryKey = column.PrimaryKey;
|
|
EntityTypeProperty = GetPropertyInfo (owner.EntityType, Name);
|
|
IsCustomProperty = column.CustomProperty;
|
|
IsGenerated = column.Generated;
|
|
MaxLength = GetMaxLength (EntityTypeProperty);
|
|
IsSortable = column.Sortable;
|
|
}
|
|
|
|
public void ResolveAssociations ()
|
|
{
|
|
if (associationResolved)
|
|
return;
|
|
|
|
associationResolved = true;
|
|
string associated = column.AssociatedTo;
|
|
if (String.IsNullOrEmpty (associated))
|
|
return;
|
|
|
|
string[] names = associated.Split (new char[] { '.' });
|
|
if (names.Length != 2)
|
|
throw new ApplicationException ("Only associations of type Table.Column are supported");
|
|
string tableName = names[0];
|
|
string columnName = names[1];
|
|
|
|
TableProvider tableProvider = null;
|
|
try {
|
|
tableProvider = Table.DataModel.Tables.First<TableProvider> ((TableProvider tp) => {
|
|
if (tp.Name == tableName)
|
|
return true;
|
|
return false;
|
|
});
|
|
} catch {
|
|
return;
|
|
}
|
|
|
|
if (tableProvider == null)
|
|
return;
|
|
|
|
ColumnProvider toColumn = null;
|
|
|
|
try {
|
|
toColumn = tableProvider.Columns.First<ColumnProvider> ((ColumnProvider cp) => {
|
|
if (cp.Name == columnName)
|
|
return true;
|
|
return false;
|
|
});
|
|
} catch {
|
|
return;
|
|
}
|
|
|
|
if (toColumn == null)
|
|
return;
|
|
|
|
IsForeignKeyComponent = true;
|
|
Association = new DynamicDataAssociationProvider (column.AssociationDirection, this, toColumn);
|
|
}
|
|
|
|
int GetMaxLength (PropertyInfo pi)
|
|
{
|
|
if (pi == null)
|
|
return 0;
|
|
|
|
object[] attrs = pi.GetCustomAttributes (typeof (DynamicDataStringLengthAttribute), true);
|
|
if (attrs == null || attrs.Length == 0)
|
|
return 0;
|
|
|
|
var attr = attrs[0] as DynamicDataStringLengthAttribute;
|
|
if (attr == null)
|
|
return 0;
|
|
|
|
return attr.MaxLength;
|
|
}
|
|
|
|
PropertyInfo GetPropertyInfo (Type type, string name)
|
|
{
|
|
try {
|
|
PropertyInfo ret = type.GetProperties (BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy).
|
|
First<PropertyInfo> ((pi) => {
|
|
if (String.Compare (pi.Name, name, StringComparison.Ordinal) == 0)
|
|
return true;
|
|
return false;
|
|
}
|
|
);
|
|
return ret;
|
|
} catch (InvalidOperationException ex) {
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
}
|