org.apache.tools.ant.types

## Interface ResourceCollection

- All Superinterfaces:
    java.lang.Iterable<Resource>
  All Known Implementing Classes:
    AbstractClasspathResource, AbstractResourceCollectionWrapper, AllButFirst, AllButLast, ArchiveFileSet, ArchiveResource, Archives, BaseResourceCollectionContainer, BaseResourceCollectionWrapper, BCFileSet, BZip2Resource, ClassfileSet, CompressedResource, Concat, ContentTransformingResource, Difference, DirSet, FileList, FileResource, Files, FileSet, First, GZipResource, Intersect, JavaConstantResource, Javadoc.TagArgument, JavaResource, Last, LazyResourceCollectionWrapper, LibFileSet, LogOutputResource, MappedResource, MappedResourceCollection, MultiRootFileSet, Path, Path.PathElement, PropertyResource, PropertySet, Resource, ResourceDecorator, ResourceList, Resources, Restrict, SizeLimitCollection, Sort, StringResource, Tar.TarFileSet, TarFileSet, TarResource, Tokens, Union, URLResource, XzResource, ZipFileSet, ZipResource

      public interface ResourceCollection
      extends java.lang.Iterable<Resource>

  Interface describing a collection of Resources.
  Since:
    Ant 1.7

- - ### Method Summary

    All Methods Instance Methods Abstract Methods Default Methods
    Modifier and Type | Method and Description
    --- | ---
    `default boolean` | `isEmpty()` Learn whether this `ResourceCollection` is empty.
    `boolean` | `isFilesystemOnly()` Indicate whether this ResourceCollection is composed entirely of Resources accessible via local filesystem conventions.
    `int` | `size()` Learn the number of contained Resources.
    `default java.util.stream.Stream<? extends Resource>` | `stream()` Return a `Stream` over this `ResourceCollection`.

    - ### Methods inherited from interface java.lang.Iterable

      `forEach, iterator, spliterator`

- - ### Method Detail

    - #### size

          int size()

      Learn the number of contained Resources.
      Returns:
        number of elements as int.

    - #### isFilesystemOnly

          boolean isFilesystemOnly()

      Indicate whether this ResourceCollection is composed entirely of Resources accessible via local filesystem conventions. If true, all resources returned from this collection should respond with a `FileProvider` when asked via `Resource.as(java.lang.Class<T>)`.
      Returns:
        whether this is a filesystem-only resource collection.

    - #### stream

          default java.util.stream.Stream<? extends Resource> stream()

      Return a `Stream` over this `ResourceCollection`.
      Returns:
        `Stream` of `Resource`
      Since:
        Ant 1.10.2

    - #### isEmpty

          default boolean isEmpty()

      Learn whether this `ResourceCollection` is empty.
      Returns:
        boolean