## 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:
  java.lang.Cloneable, java.lang.Iterable<Resource>, ResourceCollection

    public class MappedResourceCollection

extends DataType
implements ResourceCollection, java.lang.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
`MappedResourceCollection()`

Method Summary
`void` `add(FileNameMapper fileNameMapper)` Add a nested filenamemapper.
`void` `add(ResourceCollection c)` Adds the required nested ResourceCollection.
`java.lang.Object` `clone()` Implement clone.
`Mapper` `createMapper()` Define the mapper to map source to destination files.
`protected void` `dieOnCircularReference(java.util.Stack<java.lang.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.
`java.util.Iterator<Resource>` `iterator()` Gets the contents of this collection.
`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.
`java.lang.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, 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`

Constructor Detail

### MappedResourceCollection

    public MappedResourceCollection()

Method Detail

### 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.

  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 java.util.Iterator<Resource> iterator()

  Gets the contents of this collection.

  Specified by:
    `iterator` in interface `java.lang.Iterable<Resource>`
  Specified by:
    `iterator` in interface `ResourceCollection`
  Returns:
    all resources in the collection

### setRefid

    public void setRefid(Reference r)

  Overrides the base version.

  Overrides:
    `setRefid` in class `DataType`
  Parameters:
    `r` - the Reference to set.

### clone

    public java.lang.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(java.util.Stack<java.lang.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 java.lang.String toString()

  Format this resource collection as a String.

  Overrides:
    `toString` in class `DataType`
  Returns:
    a descriptive `String`.