/// <summary>
/// Fan out given item to multiple locations at once. See https://firebase.googleblog.com/2015/10/client-side-fan-out-for-data-consistency_73.html for details.
/// </summary>
/// <typeparam name="T"> Type of object to fan out. </typeparam>
/// <param name="query"> Current node. </param>
/// <param name="item"> Object to fan out. </param>
/// <param name="relativePaths"> Locations where to store the item. </param>
public static async Task FanOut <T>(this ChildQuery child, T item, params string[] relativePaths)
{
if (relativePaths == null)
{
throw new ArgumentNullException(nameof(relativePaths));
}
var fanoutObject = new Dictionary <string, T>(relativePaths.Length);
foreach (var path in relativePaths)
{
fanoutObject.Add(path, item);
}
await child.PatchAsync(fanoutObject);
}
/// <summary>
/// Order data by $priority. Note that this is used mainly for following filtering queries and due to firebase implementation
/// the data may actually not be ordered.
/// </summary>
/// <param name="child"> The child. </param>
/// <returns> The <see cref="OrderQuery"/>. </returns>
public static OrderQuery OrderByPriority(this ChildQuery child)
{
return(child.OrderBy("$priority"));
}
/// <summary>
/// Order data by $value. Note that this is used mainly for following filtering queries and due to firebase implementation
/// the data may actually not be ordered.
/// </summary>
/// <param name="child"> The child. </param>
/// <returns> The <see cref="OrderQuery"/>. </returns>
public static OrderQuery OrderByValue(this ChildQuery child)
{
return(child.OrderBy("$value"));
}
/// <summary>
/// Order data by $key. Note that this is used mainly for following filtering queries and due to firebase implementation
/// the data may actually not be ordered.
/// </summary>
/// <param name="child"> The child. </param>
/// <returns> The <see cref="OrderQuery"/>. </returns>
public static OrderQuery OrderByKey(this ChildQuery child)
{
return(child.OrderBy("$key"));
}
/// <summary>
/// Order data by given <see cref="propertyNameFactory"/>. Note that this is used mainly for following filtering queries and due to firebase implementation
/// the data may actually not be ordered.
/// </summary>
/// <param name="child"> The child. </param>
/// <param name="propertyNameFactory"> The property name. </param>
/// <returns> The <see cref="OrderQuery"/>. </returns>
public static OrderQuery OrderBy(this ChildQuery child, Func <string> propertyNameFactory)
{
return(new OrderQuery(child, propertyNameFactory, child.Client));
}
/// <summary>
/// References a sub child of the existing node.
/// </summary>
/// <param name="node"> The child. </param>
/// <param name="pathFactory"> The path of sub child. </param>
/// <returns> The <see cref="ChildQuery"/>. </returns>
public static ChildQuery Child(this ChildQuery node, Func <string> pathFactory)
{
return(new ChildQuery(node, pathFactory, node.Client));
}
/// <summary>
/// Order data by given <see cref="propertyName"/>. Note that this is used mainly for following filtering queries and due to firebase implementation
/// the data may actually not be ordered.
/// </summary>
/// <param name="child"> The child. </param>
/// <param name="propertyName"> The property name. </param>
/// <returns> The <see cref="OrderQuery"/>. </returns>
public static OrderQuery OrderBy(this ChildQuery child, string propertyName)
{
return(child.OrderBy(() => propertyName));
}
/// <summary>
/// References a sub child of the existing node.
/// </summary>
/// <param name="node"> The child. </param>
/// <param name="path"> The path of sub child. </param>
/// <returns> The <see cref="ChildQuery"/>. </returns>
public static ChildQuery Child(this ChildQuery node, string path)
{
return(node.Child(() => path));
}
/// <summary>
/// Initializes a new instance of the <see cref="OrderQuery"/> class.
/// </summary>
/// <param name="parent"> The query parent. </param>
/// <param name="propertyNameFactory"> The property name. </param>
/// <param name="client"> The owning client. </param>
public OrderQuery(ChildQuery parent, Func <string> propertyNameFactory, FirebaseClient client)
: base(parent, () => "orderBy", client)
{
this.propertyNameFactory = propertyNameFactory;
}