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Diffstat (limited to 'dsa/FireBase/Query/ParameterQuery.cs')
| -rw-r--r-- | dsa/FireBase/Query/ParameterQuery.cs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/dsa/FireBase/Query/ParameterQuery.cs b/dsa/FireBase/Query/ParameterQuery.cs new file mode 100644 index 0000000..572224c --- /dev/null +++ b/dsa/FireBase/Query/ParameterQuery.cs @@ -0,0 +1,43 @@ +using System; + +namespace Firebase.Database.Query +{ + /// <summary> + /// Represents a parameter in firebase query, e.g. "?data=foo". + /// </summary> + public abstract class ParameterQuery : FirebaseQuery + { + private readonly Func<string> parameterFactory; + private readonly string separator; + + /// <summary> + /// Initializes a new instance of the <see cref="ParameterQuery" /> class. + /// </summary> + /// <param name="parent"> The parent of this query. </param> + /// <param name="parameterFactory"> The parameter. </param> + /// <param name="client"> The owning client. </param> + protected ParameterQuery(FirebaseQuery parent, Func<string> parameterFactory, FirebaseClient client) + : base(parent, client) + { + this.parameterFactory = parameterFactory; + separator = Parent is ChildQuery ? "?" : "&"; + } + + /// <summary> + /// Build the url segment represented by this query. + /// </summary> + /// <param name="child"> The child. </param> + /// <returns> The <see cref="string" />. </returns> + protected override string BuildUrlSegment(FirebaseQuery child) + { + return $"{separator}{parameterFactory()}={BuildUrlParameter(child)}"; + } + + /// <summary> + /// The build url parameter. + /// </summary> + /// <param name="child"> The child. </param> + /// <returns> The <see cref="string" />. </returns> + protected abstract string BuildUrlParameter(FirebaseQuery child); + } +}
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