internal EntityIndex(EntityType entityType, IndexAttribute attr)
: base(attr.Name, attr.NativeName)
{
this.Initialize(entityType);
if (EntityType == null)
{
throw new InvalidOperationException("EntityType is null.");
}
// set...
_hasUniqueValues = attr.HasUniqueValues;
// setup the fields...
if (attr.ColumnNativeNames == null)
{
throw new InvalidOperationException("'attr.ColumnNativeNames' is null.");
}
if (attr.ColumnNativeNames.Length == 0)
{
throw new InvalidOperationException("'attr.ColumnNativeNames' is zero-length.");
}
// add...
AddColumns(entityType, attr.ColumnNativeNames, this.Fields);
this.IncludedFields = new EntityFieldCollection(entityType);
AddColumns(entityType, attr.IncludedColumns, this.IncludedFields);
this.ComputedFields = new EntityFieldCollection(entityType);
AddColumns(entityType, attr.ComputedColumns, this.ComputedFields);
}
private void Initialize(EntityType entityType)
{
if (entityType == null)
{
throw new ArgumentNullException("entityType");
}
this.SetEntityType(entityType);
// create...
_fields = new EntityFieldCollection(this.EntityType);
}
private void AddColumns(EntityType et, string names, EntityFieldCollection fields)
{
if (names == null)
{
return;
}
// walk...
string[] parts = names.Split(',');
foreach (string name in parts)
{
string useName = name.Trim();
// find...
EntityField field = et.Fields.GetField(useName, OnNotFound.ThrowException);
if (field == null)
{
throw new InvalidOperationException("field is null.");
}
// add...
fields.Add(field);
}
}
/// <summary>
/// Adds a EntityField instance to the collection.
/// </summary>
/// <param name="item">The item to add.</param>
public void AddRange(EntityFieldCollection items)
{
this.AddRangeInternal(items);
}