private IPromise<Property> GetProperty(ItemType itemType, string name)
{
if (_conn == null || itemType.Properties.Count > 0)
return LoadedProperty(itemType, name);
return _conn.ApplyAsync("<AML><Item action=\"get\" type=\"ItemType\" select=\"name\"><name>@0</name><Relationships><Item action=\"get\" type=\"Property\" select=\"name,label,data_type,data_source\" /></Relationships></Item></AML>"
, true, true, itemType.Name)
.Continue(r =>
{
LoadProperties(itemType, r.AssertItem());
return LoadedProperty(itemType, name);
});
}
private IPromise<Property> LoadedProperty(ItemType itemType, string name)
{
Property prop;
if (itemType.Properties.TryGetValue(name, out prop))
{
return Promises.Resolved(prop);
}
else
{
return Promises.Rejected<Property>(new KeyNotFoundException());
}
}
private IPromise<IEnumerable<Property>> GetProperties(ItemType itemType)
{
if (_conn == null || itemType.Properties.Count > 0)
return Promises.Resolved<IEnumerable<Property>>(itemType.Properties.Values);
return _conn.ApplyAsync("<AML><Item action=\"get\" type=\"ItemType\" select=\"name\"><name>@0</name><Relationships><Item action=\"get\" type=\"Property\" select=\"name,label,data_type,data_source\" /></Relationships></Item></AML>"
, true, true, itemType.Name)
.Convert(r => {
LoadProperties(itemType, r.AssertItem());
return (IEnumerable<Property>)itemType.Properties.Values;
});
}
/// <summary>
/// Loads the property metadata for the current type into the schema.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="itemTypeMeta">The properties.</param>
private void LoadProperties(ItemType type, IReadOnlyItem itemTypeMeta)
{
var props = itemTypeMeta.Relationships("Property");
Property newProp = null;
foreach (var prop in props)
{
newProp = new Property(prop.Property("name").Value);
newProp.SetType(prop.Property("data_type").Value);
if (newProp.Type == PropertyType.item && prop.Property("data_source").Attribute("name").HasValue())
{
newProp.Restrictions.Add(prop.Property("data_source").Attribute("name").Value);
}
type.Properties.Add(newProp);
}
}
private void RecurseProperties(ItemType itemType, IEnumerable<string> remainingPath, Action<ItemType> callback)
{
if (remainingPath.Any())
{
GetProperty(itemType, remainingPath.First())
.Done(currProp =>
{
ItemType it;
if (currProp.Type == PropertyType.item
&& currProp.Restrictions.Any()
&& _itemTypes.TryGetValue(currProp.Restrictions.First(), out it))
{
RecurseProperties(it, remainingPath.Skip(1), callback);
}
else
{
callback(itemType);
}
})
.Fail(ex => callback(itemType));
}
else
{
callback(itemType);
}
}
public ItemType(string name, ItemType source, ItemType related)
{
this.Name = name;
this.Source = source;
this.Related = related;
}
private bool TryGetProperty(ItemType itemType, string name, out Property prop)
{
if (itemType.Properties.Count < 1)
LoadProperties(itemType, GetItems("ApplyItem", string.Format("<AML><Item action=\"get\" type=\"ItemType\" select=\"name\"><name>{0}</name><Relationships><Item action=\"get\" type=\"Property\" select=\"name,label,data_type,data_source\" /></Relationships></Item></AML>", itemType.Name)));
return itemType.Properties.TryGetValue(name, out prop);
}
/// <summary>
/// Loads the property metadata for the current type into the schema.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="properties">The properties.</param>
private void LoadProperties(ItemType type, IEnumerable<XmlElement> properties)
{
if (properties.Any())
{
var props = properties.Single().ElementsByXPath("Relationships/Item[@type='Property']");
Property newProp = null;
foreach (var prop in props)
{
newProp = new Property(prop.Element("name").InnerText);
newProp.SetType(prop.Element("data_type").InnerText);
if (newProp.Type == PropertyType.item && prop.Element("data_source").Attribute("name") != null)
{
newProp.Restrictions.Add(prop.Element("data_source").Attribute("name"));
}
type.Properties.Add(newProp);
}
}
}
private IEnumerable<Property> GetProperties(ItemType itemType)
{
if (itemType.Properties.Count < 1)
LoadProperties(itemType, GetItems("ApplyItem", string.Format("<AML><Item action=\"get\" type=\"ItemType\" select=\"name\"><name>{0}</name><Relationships><Item action=\"get\" type=\"Property\" select=\"name,label,data_type,data_source\" /></Relationships></Item></AML>", itemType.Name)));
return itemType.Properties.Values;
}
