// The logic that figures out the association is not yet ready. For now we use the second implementation, which
// gets us going until we iron things out
#if NOTYETREADY
internal void Initialize()
{
if (DataServiceUtilities.IsEntityType(this.ColumnType, this.Table.DataModel.ContextType))
{
TableProvider tp = this.Table.DataModel.Tables
.FirstOrDefault(t => t.EntityType.IsAssignableFrom(this.ColumnType));
if (tp != null)
{
DataServiceColumnProvider nullColumn = new DataServiceColumnProvider(tp)
{
ColumnType = typeof(string),
Name = "Null(" + this.Table.Name + "." + this.Name + ")"
};
((DataServiceTableProvider)tp).AddColumn(nullColumn);
Association = new DataServiceAssociationProvider(
AssociationDirection.ManyToOne,
this,
nullColumn,
new List <string>()
{
this.Table.Name + "({0})/" + this.Name
});
}
}
// not the best heuristic, but it'll do for now
else if (!DataServiceUtilities.IsPrimitiveType(this.ColumnType) &&
typeof(IEnumerable).IsAssignableFrom(this.ColumnType) &&
this.ColumnType.GetGenericArguments().Length > 0 &&
DataServiceUtilities.IsEntityType(this.ColumnType.GetGenericArguments()[0], this.Table.DataModel.ContextType))
{
TableProvider tp = this.Table.DataModel.Tables
.FirstOrDefault(t => t.EntityType.IsAssignableFrom(this.ColumnType));
if (tp != null)
{
DataServiceColumnProvider nullColumn = new DataServiceColumnProvider(this.Table)
{
ColumnType = typeof(string),
Name = "Null(" + this.Table.Name + "." + this.Name + ")"
};
((DataServiceTableProvider)tp).AddColumn(nullColumn);
Association = new DataServiceAssociationProvider(
AssociationDirection.ManyToMany,
this,
nullColumn,
new List <string>()
{
this.Table.Name + "({0})/" + this.Name
});
}
}
}
// The logic that figures out the association is not yet ready. For now we use the second implementation, which
// gets us going until we iron things out
internal void Initialize()
{
if (DataServiceUtilities.IsEntityType(this.ColumnType, this.Table.DataModel.ContextType)) {
TableProvider tp = this.Table.DataModel.Tables
.FirstOrDefault(t => t.EntityType.IsAssignableFrom(this.ColumnType));
if (tp != null) {
DataServiceColumnProvider nullColumn = new DataServiceColumnProvider(tp) {
ColumnType = typeof(string),
Name = "Null(" + this.Table.Name + "." + this.Name + ")"
};
((DataServiceTableProvider)tp).AddColumn(nullColumn);
Association = new DataServiceAssociationProvider(
AssociationDirection.ManyToOne,
this,
nullColumn,
new List<string>() { this.Table.Name + "({0})/" + this.Name });
}
}
// not the best heuristic, but it'll do for now
else if (!DataServiceUtilities.IsPrimitiveType(this.ColumnType) &&
typeof(IEnumerable).IsAssignableFrom(this.ColumnType) &&
this.ColumnType.GetGenericArguments().Length > 0 &&
DataServiceUtilities.IsEntityType(this.ColumnType.GetGenericArguments()[0], this.Table.DataModel.ContextType)) {
TableProvider tp = this.Table.DataModel.Tables
.FirstOrDefault(t => t.EntityType.IsAssignableFrom(this.ColumnType));
if (tp != null) {
DataServiceColumnProvider nullColumn = new DataServiceColumnProvider(this.Table) {
ColumnType = typeof(string),
Name = "Null(" + this.Table.Name + "." + this.Name + ")"
};
((DataServiceTableProvider)tp).AddColumn(nullColumn);
Association = new DataServiceAssociationProvider(
AssociationDirection.ManyToMany,
this,
nullColumn,
new List<string>() { this.Table.Name + "({0})/" + this.Name });
}
}
}
internal void Initialize()
{
// If we don't have a PropertyInfo, we're likely dealing with an association column
// we created in TryCreateAssociationColumn, and we should skip it here
if (EntityTypeProperty == null)
{
return;
}
// Check if there is an Entity that has the same type as this column. If so, we treat this column as an entity ref
TableProvider parentTable = Table.DataModel.Tables.SingleOrDefault(t => t.EntityType == ColumnType);
if (parentTable == null)
{
return;
}
DataServiceColumnProvider toColumn = null;
ColumnProvider parentPK = null;
// Look for the matching Entity Set column in the parent table
foreach (DataServiceColumnProvider parentColumn in parentTable.Columns)
{
// Pick up the parent table's PK column on the way
if (parentColumn.IsPrimaryKey)
{
parentPK = parentColumn;
}
// The Entity Set column is expected to be of a type like IList<AcmeProduct>
if (!parentColumn.ColumnType.IsGenericType)
{
continue;
}
Type childrenType = parentColumn.ColumnType.GetGenericArguments()[0];
if (childrenType == Table.EntityType)
{
toColumn = parentColumn;
break;
}
}
var foreignKeyNames = new List <string>();
foreignKeyNames.Add(Name + "." + parentPK.Name);
if (toColumn == null)
{
Association = new DataServiceAssociationProvider(AssociationDirection.ManyToOne, this, parentTable, foreignKeyNames);
}
else
{
Association = new DataServiceAssociationProvider(AssociationDirection.ManyToOne, this, toColumn, foreignKeyNames);
// Create the reverse association
var reverseAssociation = new DataServiceAssociationProvider(AssociationDirection.OneToMany, toColumn, this, foreignKeyNames);
toColumn.Association = reverseAssociation;
}
}
internal DataServiceColumnProvider TryCreateAssociationColumn()
{
if (IsPrimaryKey)
{
return(null);
}
// This applies if the column name ends with Id (e.g. StartCityID)
if (!Name.EndsWith("id", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
// Get the potential name of the (pseudo) navigation property, e.g. StartCity
string navigationName = Name.Substring(0, Name.Length - 2);
if (String.IsNullOrEmpty(navigationName))
{
return(null);
}
// Check if there is an Entity that ends with that name, e.g. City
var parentTable = (DataServiceTableProvider)Table.DataModel.Tables.Where(
t => navigationName.EndsWith(t.EntityType.Name, StringComparison.OrdinalIgnoreCase)).SingleOrDefault();
if (parentTable == null)
{
return(null);
}
// Get the prefix of the navigation property, e.g. Start. If the column name is
// just CityID, then the prefix is empty.
string navPropPrefix = navigationName.Substring(
0, navigationName.Length - parentTable.EntityType.Name.Length);
var foreignKeyNames = new List <string>();
foreignKeyNames.Add(Name);
// Mark this as a FK column
this.IsForeignKeyComponent = true;
// Create a matching association column (e.g. StartCity in the Routes table)
var associationColumn = new DataServiceColumnProvider(Table);
associationColumn._fkColumn = this;
associationColumn.Name = navigationName;
associationColumn.ColumnType = parentTable.EntityType;
associationColumn.Association = new DataServiceAssociationProvider(AssociationDirection.ManyToOne, associationColumn, parentTable, foreignKeyNames);
// Create the reverse association column (e.g. StartProducts in the Cities table)
var reverseAssociationColumn = new DataServiceColumnProvider(parentTable);
reverseAssociationColumn.Name = navPropPrefix + Table.Name;
reverseAssociationColumn.ColumnType = Table.EntityType;
reverseAssociationColumn.Association = new DataServiceAssociationProvider(AssociationDirection.OneToMany, reverseAssociationColumn, associationColumn, foreignKeyNames);
parentTable.AddColumn(reverseAssociationColumn);
return(associationColumn);
}
internal DataServiceColumnProvider TryCreateAssociationColumn() {
if (IsPrimaryKey)
return null;
// This applies if the column name ends with Id (e.g. StartCityID)
if (!Name.EndsWith("id", StringComparison.OrdinalIgnoreCase))
return null;
// Get the potential name of the (pseudo) navigation property, e.g. StartCity
string navigationName = Name.Substring(0, Name.Length - 2);
if (String.IsNullOrEmpty(navigationName))
return null;
// Check if there is an Entity that ends with that name, e.g. City
var parentTable = (DataServiceTableProvider)Table.DataModel.Tables.Where(
t => navigationName.EndsWith(t.EntityType.Name, StringComparison.OrdinalIgnoreCase)).SingleOrDefault();
if (parentTable == null)
return null;
// Get the prefix of the navigation property, e.g. Start. If the column name is
// just CityID, then the prefix is empty.
string navPropPrefix = navigationName.Substring(
0, navigationName.Length - parentTable.EntityType.Name.Length);
var foreignKeyNames = new List<string>();
foreignKeyNames.Add(Name);
// Mark this as a FK column
this.IsForeignKeyComponent = true;
// Create a matching association column (e.g. StartCity in the Routes table)
var associationColumn = new DataServiceColumnProvider(Table);
associationColumn._fkColumn = this;
associationColumn.Name = navigationName;
associationColumn.ColumnType = parentTable.EntityType;
associationColumn.Association = new DataServiceAssociationProvider(AssociationDirection.ManyToOne, associationColumn, parentTable, foreignKeyNames);
// Create the reverse association column (e.g. StartProducts in the Cities table)
var reverseAssociationColumn = new DataServiceColumnProvider(parentTable);
reverseAssociationColumn.Name = navPropPrefix + Table.Name;
reverseAssociationColumn.ColumnType = Table.EntityType;
reverseAssociationColumn.Association = new DataServiceAssociationProvider(AssociationDirection.OneToMany, reverseAssociationColumn, associationColumn, foreignKeyNames);
parentTable.AddColumn(reverseAssociationColumn);
return associationColumn;
}
