/// <summary>
/// Gets the EntityDataKey for the specified association role.
/// </summary>
/// <param name="roleName">The association role name.</param>
/// <returns>EntityDataKey for the association role.</returns>
public EntityDataKey GetRoleKey(string roleName)
{
int ordinal = this.GetRoleNameOrdinal(roleName);
EntityDataKey key = this.data[ordinal];
if (key == null)
{
key = new EntityDataKey(this.GetKeyNamesForRoleName(roleName));
this.data[ordinal] = key;
}
return(key);
}
internal EntitySetDataRowData(EntityDataKey key, string[] nonKeyPropertyPaths, string[] dynamicPropertyPaths, string fullEntityTypeName)
{
this.dynamicData = new Dictionary <string, object>();
this.dynamicPropertyPaths = dynamicPropertyPaths;
this.nonKeyPropertyPaths = nonKeyPropertyPaths;
this.key = key;
this.fullEntityTypeName = fullEntityTypeName;
// Initialize all the data for property non collection non key property paths to unitialized
foreach (string propertyPath in this.nonKeyPropertyPaths)
{
this.dynamicData.Add(propertyPath, UninitializedData.Value);
}
}
/// <summary>
/// Sets the EntityDataKey for the specified association role.
/// </summary>
/// <param name="roleName">The association role name.</param>
/// <param name="key">EntityDataKey for the association role.</param>
public void SetRoleKey(string roleName, EntityDataKey key)
{
ExceptionUtilities.CheckArgumentNotNull(key, "key");
int ordinal = this.GetRoleNameOrdinal(roleName);
List <string> expectedKeyNames = this.GetKeyNamesForRoleName(roleName).ToList();
if (expectedKeyNames.Count != key.KeyNames.Count ||
expectedKeyNames.Join(key.KeyNames, n1 => n1, n2 => n2, (n1, n2) => n1).Count() != expectedKeyNames.Count)
{
throw new TaupoArgumentException("Specified key does not match key metadata for the role '" + roleName + "'.");
}
this.data[ordinal] = key;
}
/// <summary>
/// Gets the related keys for the given roleName in an association(denoted by associationSetName), given this end's key.
/// </summary>
/// <param name="data">The EntityContainerData which contains AssociationSetData.</param>
/// <param name="associationSetName">The name of the association set.</param>
/// <param name="roleName">The roleName of the known end.</param>
/// <param name="roleKey">The key for the role of the known end.</param>
/// <returns>The Related keys of the other end.</returns>
public static IEnumerable <EntityDataKey> GetRelatedKeys(this EntityContainerData data, string associationSetName, string roleName, EntityDataKey roleKey)
{
ExceptionUtilities.CheckArgumentNotNull(data, "data");
ExceptionUtilities.CheckStringArgumentIsNotNullOrEmpty(associationSetName, "associationSetName");
ExceptionUtilities.CheckStringArgumentIsNotNullOrEmpty(roleName, "roleName");
ExceptionUtilities.CheckArgumentNotNull(roleKey, "roleKey");
var associationSetData = data.GetAssociationSetData(associationSetName);
string otherRoleName = associationSetData.AssociationSet.AssociationType.Ends.Where(e => e.RoleName != roleName).Single().RoleName;
return(associationSetData.Rows.Where(r => roleKey.Equals(r.GetRoleKey(roleName))).Select(r => r.GetRoleKey(otherRoleName)));
}
