private IEnumerable <RuleEntityConnBindingModel> GetEntityConnBindingCollection()
{
List <RuleEntityConnBindingModel> result = new List <RuleEntityConnBindingModel>();
var esq = new EntitySchemaQuery(_userConnection.EntitySchemaManager, "EntityConnBinding");
esq.PrimaryQueryColumn.IsAlwaysSelect = true;
var parentIdColumn = esq.AddColumn("EntityConnectionParentId");
var childIdColumn = esq.AddColumn("EntityConnectionChildId");
var entityCollection = esq.GetEntityCollection(_userConnection);
foreach (var item in entityCollection)
{
EntityConnectionModel targetEntityConnection = GetEntityConnection(item.GetTypedColumnValue <Guid>(parentIdColumn.ValueQueryAlias));
EntityConnectionModel sourceEntityConnection = GetEntityConnection(item.GetTypedColumnValue <Guid>(childIdColumn.ValueQueryAlias));
if (targetEntityConnection != null && sourceEntityConnection != null)
{
RuleEntityConnBindingModel model = new RuleEntityConnBindingModel();
model.TargetEntitySchemaUId = targetEntityConnection.SysEntitySchemaUId;
model.TargetEntitySchemaColumnUId = targetEntityConnection.ColumnUId;
model.SourceEntitySchemaUId = sourceEntityConnection.SysEntitySchemaUId;
model.SourceEntitySchemaColumnUId = sourceEntityConnection.ColumnUId;
result.Add(model);
}
}
return(result);
}
private EntityConnectionModel GetEntityConnection(Guid id)
{
EntityConnectionModel result = new EntityConnectionModel();
var esq = new EntitySchemaQuery(_userConnection.EntitySchemaManager, "EntityConnection");
esq.PrimaryQueryColumn.IsAlwaysSelect = true;
var sysEntitySchemaUIdColumn = esq.AddColumn("SysEntitySchemaUId");
var columnUIdColumn = esq.AddColumn("ColumnUId");
esq.Filters.Add(esq.CreateFilterWithParameters(
FilterComparisonType.Equal,
esq.PrimaryQueryColumn.Name,
id
));
var entityCollection = esq.GetEntityCollection(_userConnection);
if (entityCollection.Count > 0)
{
result.SysEntitySchemaUId = entityCollection[0].GetTypedColumnValue <Guid>(sysEntitySchemaUIdColumn.ValueQueryAlias);
result.ColumnUId = entityCollection[0].GetTypedColumnValue <Guid>(columnUIdColumn.ValueQueryAlias);
return(result);
}
else
{
return(null);
}
}
