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Diffstat (limited to 'dsa/FireBase/Query/FilterQuery.cs')
-rw-r--r-- | dsa/FireBase/Query/FilterQuery.cs | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/dsa/FireBase/Query/FilterQuery.cs b/dsa/FireBase/Query/FilterQuery.cs new file mode 100644 index 0000000..3434d1d --- /dev/null +++ b/dsa/FireBase/Query/FilterQuery.cs @@ -0,0 +1,77 @@ +using System; +using System.Globalization; + +namespace Firebase.Database.Query +{ + /// <summary> + /// Represents a firebase filtering query, e.g. "?LimitToLast=10". + /// </summary> + public class FilterQuery : ParameterQuery + { + private readonly Func<bool> boolValueFactory; + private readonly Func<double> doubleValueFactory; + private readonly Func<string> valueFactory; + + /// <summary> + /// Initializes a new instance of the <see cref="FilterQuery" /> class. + /// </summary> + /// <param name="parent"> The parent. </param> + /// <param name="filterFactory"> The filter. </param> + /// <param name="valueFactory"> The value for filter. </param> + /// <param name="client"> The owning client. </param> + public FilterQuery(FirebaseQuery parent, Func<string> filterFactory, Func<string> valueFactory, + FirebaseClient client) + : base(parent, filterFactory, client) + { + this.valueFactory = valueFactory; + } + + /// <summary> + /// Initializes a new instance of the <see cref="FilterQuery" /> class. + /// </summary> + /// <param name="parent"> The parent. </param> + /// <param name="filterFactory"> The filter. </param> + /// <param name="valueFactory"> The value for filter. </param> + /// <param name="client"> The owning client. </param> + public FilterQuery(FirebaseQuery parent, Func<string> filterFactory, Func<double> valueFactory, + FirebaseClient client) + : base(parent, filterFactory, client) + { + doubleValueFactory = valueFactory; + } + + /// <summary> + /// Initializes a new instance of the <see cref="FilterQuery" /> class. + /// </summary> + /// <param name="parent"> The parent. </param> + /// <param name="filterFactory"> The filter. </param> + /// <param name="valueFactory"> The value for filter. </param> + /// <param name="client"> The owning client. </param> + public FilterQuery(FirebaseQuery parent, Func<string> filterFactory, Func<bool> valueFactory, + FirebaseClient client) + : base(parent, filterFactory, client) + { + boolValueFactory = valueFactory; + } + + /// <summary> + /// The build url parameter. + /// </summary> + /// <param name="child"> The child. </param> + /// <returns> Url parameter part of the resulting path. </returns> + protected override string BuildUrlParameter(FirebaseQuery child) + { + if (valueFactory != null) + { + if (valueFactory() == null) return "null"; + return $"\"{valueFactory()}\""; + } + + if (doubleValueFactory != null) + return doubleValueFactory().ToString(CultureInfo.InvariantCulture); + if (boolValueFactory != null) return $"{boolValueFactory().ToString().ToLower()}"; + + return string.Empty; + } + } +}
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