/// <summary>
/// Initializes a new instance of the <see cref="AggregateCatalog"/> class
/// with the specified catalogs.
/// </summary>
/// <param name="catalogs">
/// An <see cref="IEnumerable{T}"/> of <see cref="ComposablePartCatalog"/> objects to add
/// to the <see cref="AggregateCatalog"/>; or <see langword="null"/> to
/// create an <see cref="AggregateCatalog"/> that is empty.
/// </param>
/// <exception cref="ArgumentException">
/// <paramref name="catalogs"/> contains an element that is <see langword="null"/>.
/// </exception>
public AggregateCatalog(IEnumerable<ComposablePartCatalog> catalogs)
{
Requires.NullOrNotNullElements(catalogs, "catalogs");
this._catalogs = new ComposablePartCatalogCollection(catalogs, this.OnChanged, this.OnChanging);
this._partsQuery = this._catalogs.AsQueryable().SelectMany(catalog => catalog.Parts);
}
private void Initialize(string path, string searchPattern)
{
this._path = path;
this._fullPath = GetFullPath(path);
this._searchPattern = searchPattern;
this._assemblyCatalogs = new Dictionary<string, AssemblyCatalog>();
this._catalogCollection = new ComposablePartCatalogCollection(null);
this._loadedFiles = GetFiles().ToReadOnlyCollection();
foreach (string file in this._loadedFiles)
{
AssemblyCatalog assemblyCatalog = null;
assemblyCatalog = CreateAssemblyCatalogGuarded(file);
if (assemblyCatalog != null)
{
this._assemblyCatalogs.Add(file, assemblyCatalog);
this._catalogCollection.Add(assemblyCatalog);
}
}
this._partsQuery = this._catalogCollection.AsQueryable().SelectMany(catalog => catalog.Parts);
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected override void Dispose(bool disposing)
{
try
{
if (disposing)
{
if (!this._isDisposed)
{
bool disposeLock = false;
ComposablePartCatalogCollection catalogs = null;
try
{
using (new WriteLock(this._thisLock))
{
if (!this._isDisposed)
{
disposeLock = true;
catalogs = this._catalogCollection;
this._catalogCollection = null;
this._assemblyCatalogs = null;
this._isDisposed = true;
}
}
}
finally
{
if (catalogs != null)
{
catalogs.Dispose();
}
if (disposeLock)
{
this._thisLock.Dispose();
}
}
}
}
}
finally
{
base.Dispose(disposing);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="AggregateCatalog"/> class
/// with the specified catalogs.
/// </summary>
/// <param name="catalogs">
/// An <see cref="IEnumerable{T}"/> of <see cref="ComposablePartCatalog"/> objects to add
/// to the <see cref="AggregateCatalog"/>; or <see langword="null"/> to
/// create an <see cref="AggregateCatalog"/> that is empty.
/// </param>
/// <exception cref="ArgumentException">
/// <paramref name="catalogs"/> contains an element that is <see langword="null"/>.
/// </exception>
public AggregateCatalog(IEnumerable<ComposablePartCatalog> catalogs)
{
Requires.NullOrNotNullElements(catalogs, "catalogs");
this._catalogs = new ComposablePartCatalogCollection(catalogs, this.OnChanged, this.OnChanging);
}
