private static object Get <TPrimaryKey>(this IQueryLite query, TPrimaryKey id)
{
Type entityType = query.EntityType;
EntityMetadata entityMetadata = entityType.GetEntityMetadata();
ICollection <string> primaryKeyFieldNames = entityMetadata.PrimaryKeyPropertyNames;
if (primaryKeyFieldNames.Count == 0)
{
throw new InvalidOperationException(string.Format("cannot get {0} by {1} ID, because it has no primary key", entityType.Name, typeof(TPrimaryKey).Name));
}
if (primaryKeyFieldNames.Count > 1)
{
throw new InvalidOperationException(string.Format("cannot get {0} by {1} ID, because its primary key is multiple", entityType.Name, typeof(TPrimaryKey).Name));
}
string primaryKeyFieldName = primaryKeyFieldNames.First();
PropertyInfo pi = entityMetadata.Properties[primaryKeyFieldName].PropertyInfo;
if (pi == null || pi.PropertyType != typeof(TPrimaryKey))
{
throw new InvalidOperationException(string.Format("cannot get {0} by {1} ID, because its primary key is not an {1}", entityType.Name, typeof(TPrimaryKey).Name));
}
query.Filter.Add(new ConditionLite
{
FieldName = primaryKeyFieldName,
LogicalOperator = LogicalOperatorLite.And,
Operator = OperatorLite.Equals,
FieldValue = id
});
return(query.FirstOrDefault());
}
//public static IQueryLite<TEntity> OrderByDesc<TEntity, TProperty>(this IQueryLite<TEntity> query, Expression<Func<TEntity, TProperty>> selector)
//{
// return query.OrderByDesc(selector.GetMemberName());
//}
public static object Get(this IQueryLite query, object ID)
{
string primaryKeyFieldName = query.EntityType.GetPrimaryKeyFieldName();
var condition = new ConditionLite
{
FieldName = primaryKeyFieldName,
Operator = OperatorLite.Equals,
FieldValue = ID
};
query.Filter.Add(condition);
return(query.FirstOrDefault());
}
public static object Get(this IQueryLite query, object ID)
{
if (query == null) throw new ArgumentNullException(nameof(query));
string primaryKeyFieldName = query.EntityType.GetPrimaryKeyFieldName();
var condition = new ConditionLite
{
FieldName = primaryKeyFieldName,
Operator = OperatorLite.Equals,
FieldValue = ID
};
query.Filter.Add(condition);
return query.FirstOrDefault();
}
