private IEnumerable <Export> InternalGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition)
{
ThrowIfDisposed();
EnsureRunning();
// Use the version of the catalog appropriate to this atomicComposition
ComposablePartCatalog currentCatalog = atomicComposition.GetValueAllowNull(_catalog);
IPartCreatorImportDefinition partCreatorDefinition = definition as IPartCreatorImportDefinition;
bool isExportFactory = false;
if (partCreatorDefinition != null)
{
definition = partCreatorDefinition.ProductImportDefinition;
isExportFactory = true;
}
CreationPolicy importPolicy = definition.GetRequiredCreationPolicy();
List <Export> exports = new List <Export>();
bool ensureRejection = EnsureRejection(atomicComposition);
foreach (var partDefinitionAndExportDefinition in currentCatalog.GetExports(definition))
{
bool isPartRejected = ensureRejection && IsRejected(partDefinitionAndExportDefinition.Item1, atomicComposition);
if (!isPartRejected)
{
exports.Add(CreateExport(partDefinitionAndExportDefinition.Item1, partDefinitionAndExportDefinition.Item2, isExportFactory, importPolicy));
}
}
return(exports);
}
/// <summary>
/// Returns the export definitions that match the constraint defined by the specified definition.
/// </summary>
/// <param name="definition">The <see cref="ImportDefinition"/> that defines the conditions of the
/// <see cref="ExportDefinition"/> objects to return.</param>
/// <returns>
/// An <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1, T2}"/> containing the
/// <see cref="ExportDefinition"/> objects and their associated
/// <see cref="ComposablePartDefinition"/> for objects that match the constraint defined
/// by <paramref name="definition"/>.
/// </returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="definition"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// The <see cref="ComposablePartCatalog"/> has been disposed of.
/// </exception>
/// <remarks>
/// <note type="inheritinfo">
/// Overriders of this property should never return <see langword="null"/>, if no
/// <see cref="ExportDefinition"/> match the conditions defined by
/// <paramref name="definition"/>, return an empty <see cref="IEnumerable{T}"/>.
/// </note>
/// </remarks>
public override IEnumerable<Tuple<ComposablePartDefinition, ExportDefinition>> GetExports(ImportDefinition definition)
{
ThrowIfDisposed();
Requires.NotNull(definition, nameof(definition));
var exports = new List<Tuple<ComposablePartDefinition, ExportDefinition>>();
foreach (var export in _innerCatalog.GetExports(definition))
{
if (_filter(export.Item1))
{
exports.Add(export);
}
}
return exports;
}
/// <summary>
/// Returns all exports that match the conditions of the specified import.
/// </summary>
/// <param name="definition">The <see cref="ImportDefinition"/> that defines the conditions of the
/// <see cref="Export"/> to get.</param>
/// <returns></returns>
/// <result>
/// An <see cref="IEnumerable{T}"/> of <see cref="Export"/> objects that match
/// the conditions defined by <see cref="ImportDefinition"/>, if found; otherwise, an
/// empty <see cref="IEnumerable{T}"/>.
/// </result>
/// <remarks>
/// <note type="inheritinfo">
/// The implementers should not treat the cardinality-related mismatches as errors, and are not
/// expected to throw exceptions in those cases.
/// For instance, if the import requests exactly one export and the provider has no matching exports or more than one,
/// it should return an empty <see cref="IEnumerable{T}"/> of <see cref="Export"/>.
/// </note>
/// </remarks>
protected override IEnumerable <Export> GetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition)
{
this.ThrowIfDisposed();
this.EnsureRunning();
// Use the version of the catalog appropriate to this atomicComposition
ComposablePartCatalog currentCatalog = atomicComposition.GetValueAllowNull(this._catalog);
#if SILVERLIGHT
IPartCreatorImportDefinition partCreatorDefinition = definition as IPartCreatorImportDefinition;
bool isPartCreator = false;
if (partCreatorDefinition != null)
{
definition = partCreatorDefinition.ProductImportDefinition;
isPartCreator = true;
}
#endif
CreationPolicy importPolicy = definition.GetRequiredCreationPolicy();
List <Export> exports = new List <Export>();
foreach (var partDefinitionAndExportDefinition in currentCatalog.GetExports(definition))
{
if (!IsRejected(partDefinitionAndExportDefinition.Item1, atomicComposition))
{
#if SILVERLIGHT
if (isPartCreator)
{
exports.Add(new PartCreatorExport(this,
partDefinitionAndExportDefinition.Item1,
partDefinitionAndExportDefinition.Item2));
}
else
#endif
{
exports.Add(CatalogExport.CreateExport(this,
partDefinitionAndExportDefinition.Item1,
partDefinitionAndExportDefinition.Item2,
importPolicy));
}
}
}
return(exports);
}
public override IEnumerable <Tuple <ComposablePartDefinition, ExportDefinition> > GetExports(
ImportDefinition definition)
{
Requires.NotNull(definition, nameof(definition));
var originalExports = _originalCatalog.GetExports(definition);
var trimmedExports = originalExports.Where(partAndExport =>
!_removedParts.Contains(partAndExport.Item1));
var addedExports = new List <Tuple <ComposablePartDefinition, ExportDefinition> >();
foreach (var part in _addedParts)
{
foreach (var export in part.ExportDefinitions)
{
if (definition.IsConstraintSatisfiedBy(export))
{
addedExports.Add(new Tuple <ComposablePartDefinition, ExportDefinition>(part, export));
}
}
}
return(trimmedExports.Concat(addedExports));
}
/// <summary>
/// Returns the export definitions that match the constraint defined by the specified definition.
/// </summary>
/// <param name="definition">The <see cref="ImportDefinition"/> that defines the conditions of the
/// <see cref="ExportDefinition"/> objects to return.</param>
/// <returns>
/// An <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1, T2}"/> containing the
/// <see cref="ExportDefinition"/> objects and their associated
/// <see cref="ComposablePartDefinition"/> for objects that match the constraint defined
/// by <paramref name="definition"/>.
/// </returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="definition"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// The <see cref="ComposablePartCatalog"/> has been disposed of.
/// </exception>
/// <remarks>
/// <note type="inheritinfo">
/// Overriders of this property should never return <see langword="null"/>, if no
/// <see cref="ExportDefinition"/> match the conditions defined by
/// <paramref name="definition"/>, return an empty <see cref="IEnumerable{T}"/>.
/// </note>
/// </remarks>
public override IEnumerable <Tuple <ComposablePartDefinition, ExportDefinition> > GetExports(ImportDefinition definition)
{
ThrowIfDisposed();
return(_catalog.GetExports(definition));
}