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

# Class MappedResourceCollection

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

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

public class MappedResourceCollection extends DataType implements ResourceCollection, Cloneable
Wrapper around a resource collections that maps the names of the other collection using a configured mapper.

Since:
  Ant 1.8.0

- ## Field Summary

  ### 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
  `MappedResourceCollection()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `add(ResourceCollection c)`
  Adds the required nested ResourceCollection.
  `void`
  `add(FileNameMapper fileNameMapper)`
  Add a nested filenamemapper.
  `Object`
  `clone()`
  Implement clone.
  `Mapper`
  `createMapper()`
  Define the mapper to map source to destination files.
  `protected void`
  `dieOnCircularReference(Stack<Object> stk, Project p)`
  Overrides the version of DataType to recurse on all DataType child elements that may have been added.
  `boolean`
  `isFilesystemOnly()`
  Indicate whether this ResourceCollection is composed entirely of Resources accessible via local filesystem conventions.
  `Iterator<Resource>`
  `iterator()`
  `void`
  `setCache(boolean cache)`
  Set whether to cache collections.
  `void`
  `setEnableMultipleMappings(boolean enableMultipleMappings)`
  Set method of handling mappers that return multiple mappings for a given source path.
  `void`
  `setRefid(Reference r)`
  Overrides the base version.
  `int`
  `size()`
  Learn the number of contained Resources.
  `String`
  `toString()`
  Format this resource collection as a String.

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

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

- ## Constructor Details

  - ### MappedResourceCollection

    public MappedResourceCollection()

- ## Method Details

  - ### add

    public void add(ResourceCollection c) throws BuildException
    Adds the required nested ResourceCollection.
    Parameters:
      `c` - the ResourceCollection to add.
    Throws:
      `BuildException` - on error.

  - ### createMapper

    public Mapper createMapper() throws BuildException
    Define the mapper to map source to destination files.
    Returns:
      a mapper to be configured.
    Throws:
      `BuildException` - if more than one mapper is defined.

  - ### add

    public void add(FileNameMapper fileNameMapper)
    Add a nested filenamemapper.
    Parameters:
      `fileNameMapper` - the mapper to add.
    Since:
      Ant 1.6.3

  - ### setEnableMultipleMappings

    public void setEnableMultipleMappings(boolean enableMultipleMappings)
    Set method of handling mappers that return multiple mappings for a given source path.
    Parameters:
      `enableMultipleMappings` - If true the type will use all the mappings for a given source path, if false, only the first mapped name is processed. By default, this setting is false to provide backward compatibility with earlier releases.
    Since:
      Ant 1.8.1

  - ### setCache

    public void setCache(boolean cache)
    Set whether to cache collections.
    Parameters:
      `cache` - boolean
    Since:
      Ant 1.8.1

  - ### isFilesystemOnly

    public 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>)`.
    Specified by:
      `isFilesystemOnly` in interface `ResourceCollection`
    Returns:
      whether this is a filesystem-only resource collection.

  - ### size

    public int size()
    Learn the number of contained Resources.
    Specified by:
      `size` in interface `ResourceCollection`
    Returns:
      number of elements as int.

  - ### iterator

    public Iterator<Resource> iterator()
    Specified by:
      `iterator` in interface `Iterable<Resource>`

  - ### setRefid

    public void setRefid(Reference r)
    Overrides the base version.
    Overrides:
      `setRefid` in class `DataType`
    Parameters:
      `r` - the Reference to set.

  - ### clone

    public Object clone()
    Implement clone. The nested resource collection and mapper are copied.
    Overrides:
      `clone` in class `DataType`
    Returns:
      a cloned instance.

  - ### dieOnCircularReference

    protected void dieOnCircularReference(Stack<Object> stk, Project p) throws BuildException
    Overrides the version of DataType 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.

  - ### toString

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