Package org.apache.tools.ant.types.resources

# Class Resources

java.lang.Object
org.apache.tools.ant.ProjectComponent
org.apache.tools.ant.types.DataType
org.apache.tools.ant.types.resources.Resources

All Implemented Interfaces:
  `Cloneable`, `Iterable<Resource>`, `ResourceCollection`, `AppendableResourceCollection`

public class Resources extends DataType implements AppendableResourceCollection
Generic `ResourceCollection`: Either stores nested `ResourceCollection`s, making no attempt to remove duplicates, or references another `ResourceCollection`.

Since:
  Ant 1.7

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final Iterator<Resource>`
  `EMPTY_ITERATOR`
  `static` empty `Iterator`
  `static final ResourceCollection`
  `NONE`
  `static` empty `ResourceCollection`

  ### Fields inherited from class org.apache.tools.ant.types.DataType

  `checked, ref`

  ### Fields inherited from class org.apache.tools.ant.ProjectComponent

  `description, location, project`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Resources()`
  Create a new `Resources`.
  `Resources(Project project)`
  Create a new `Resources`.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `add(ResourceCollection c)`
  Add a `ResourceCollection`.
  `protected void`
  `dieOnCircularReference(Stack<Object> stk, Project p)`
  Overrides the base implementation to recurse on all `DataType` child elements that may have been added.
  `protected void`
  `invalidateExistingIterators()`
  Allow subclasses to notify existing Iterators they have experienced concurrent modification.
  `boolean`
  `isFilesystemOnly()`
  Fulfill the `ResourceCollection` contract.
  `Iterator<Resource>`
  `iterator()`
  Fulfill the `ResourceCollection` contract.
  `void`
  `setCache(boolean b)`
  Set whether to cache collections.
  `int`
  `size()`
  Fulfill the `ResourceCollection` contract.
  `String`
  `toString()`
  Format this `Resources` as a `String`.

  ### Methods inherited from class org.apache.tools.ant.types.DataType

  `checkAttributesAllowed, checkChildrenAllowed, circularReference, clone, dieOnCircularReference, dieOnCircularReference, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getDataTypeName, getRefid, invokeCircularReferenceCheck, isChecked, isReference, noChildrenAllowed, pushAndInvokeCircularReferenceCheck, setChecked, setRefid, tooManyAttributes`

  ### Methods inherited from class org.apache.tools.ant.ProjectComponent

  `getDescription, getLocation, getProject, log, log, setDescription, setLocation, setProject`

  ### Methods inherited from class java.lang.Object

  `equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

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

  `forEach, spliterator`

  ### Methods inherited from interface org.apache.tools.ant.types.ResourceCollection

  `isEmpty, stream`

- ## Field Details

  - ### NONE

    public static final ResourceCollection NONE
    `static` empty `ResourceCollection`

  - ### EMPTY_ITERATOR

    public static final Iterator<Resource> EMPTY_ITERATOR
    `static` empty `Iterator`

- ## Constructor Details

  - ### Resources

    public Resources()
    Create a new `Resources`.

  - ### Resources

    public Resources(Project project)
    Create a new `Resources`.
    Parameters:
      `project` - `Project`
    Since:
      Ant 1.8

- ## Method Details

  - ### setCache

    public void setCache(boolean b)
    Set whether to cache collections.
    Parameters:
      `b` - `boolean` cache flag.
    Since:
      Ant 1.8.0

  - ### add

    public void add(ResourceCollection c)
    Add a `ResourceCollection`.
    Specified by:
      `add` in interface `AppendableResourceCollection`
    Parameters:
      `c` - the `ResourceCollection` to add.

  - ### iterator

    public Iterator<Resource> iterator()
    Fulfill the `ResourceCollection` contract.
    Specified by:
      `iterator` in interface `Iterable<Resource>`
    Returns:
      an `Iterator` of `Resources`.

  - ### size

    public int size()
    Fulfill the `ResourceCollection` contract.
    Specified by:
      `size` in interface `ResourceCollection`
    Returns:
      number of elements as `int`.

  - ### isFilesystemOnly

    public boolean isFilesystemOnly()
    Fulfill the `ResourceCollection` contract.
    Specified by:
      `isFilesystemOnly` in interface `ResourceCollection`
    Returns:
      `true` if all `Resource`s represent files.

  - ### toString

    public String toString()
    Format this `Resources` as a `String`.
    Overrides:
      `toString` in class `DataType`
    Returns:
      a descriptive `String`.

  - ### dieOnCircularReference

    protected void dieOnCircularReference(Stack<Object> stk, Project p) throws BuildException
    Overrides the base implementation to recurse on all `DataType` child elements that may have been added.
    Overrides:
      `dieOnCircularReference` in class `DataType`
    Parameters:
      `stk` - the stack of data types to use (recursively).
      `p` - the `Project` to use to dereference the references.
    Throws:
      `BuildException` - on error.

  - ### invalidateExistingIterators

    protected void invalidateExistingIterators()
    Allow subclasses to notify existing Iterators they have experienced concurrent modification.