/// <summary>
/// Initializes a new instance of the <see cref="GraphFieldRequest" /> class.
/// </summary>
/// <param name="invocationContext">The invocation context that defines how hte field
/// should be processed according to the query plan.</param>
/// <param name="dataSource">The data source containing the the source input data to the field as well as
/// the graph items referenced by said input data.</param>
/// <param name="origin">The location in the source query where this field request was generated.</param>
/// <param name="items">A collection of meta data items to carry with this request.</param>
public GraphFieldRequest(
IGraphFieldInvocationContext invocationContext,
GraphFieldDataSource dataSource,
SourceOrigin origin,
MetaDataCollection items = null)
{
this.Id = Guid.NewGuid().ToString("N");
this.InvocationContext = Validation.ThrowIfNullOrReturn(invocationContext, nameof(invocationContext));
this.Origin = Validation.ThrowIfNullOrReturn(origin, nameof(origin));
this.Items = items ?? new MetaDataCollection();
this.DataSource = dataSource;
}
/// <summary>
/// Merges the provided collection into this one. Any existing keys in this instance are updated with their new values
/// and non-existant keys are added to this instance.
/// </summary>
/// <param name="otherCollection">The other collection.</param>
public void Merge(MetaDataCollection otherCollection)
{
if (otherCollection == null)
{
return;
}
foreach (var kvp in otherCollection)
{
this[kvp.Key] = kvp.Value;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="GraphDirectiveRequest" /> class.
/// </summary>
/// <param name="targetDirective">The target directive.</param>
/// <param name="location">The location.</param>
/// <param name="origin">The origin.</param>
/// <param name="requestMetaData">The request meta data.</param>
public GraphDirectiveRequest(
IDirectiveGraphType targetDirective,
DirectiveLocation location,
SourceOrigin origin,
MetaDataCollection requestMetaData = null)
{
this.Id = Guid.NewGuid().ToString("N");
this.Directive = Validation.ThrowIfNullOrReturn(targetDirective, nameof(targetDirective));
this.LifeCycle = DirectiveLifeCycle.BeforeResolution;
this.DirectiveLocation = location;
this.Origin = origin ?? SourceOrigin.None;
this.Items = requestMetaData ?? new MetaDataCollection();
}
