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

Class BaseResourceCollectionContainer

java.lang.Object

org.apache.tools.ant.ProjectComponent

org.apache.tools.ant.types.DataType

org.apache.tools.ant.types.resources.BaseResourceCollectionContainer

All Implemented Interfaces:

Cloneable, Iterable<Resource>, ResourceCollection, AppendableResourceCollection

Direct Known Subclasses:

Difference, Intersect, Union

public abstract class BaseResourceCollectionContainer
extends DataType
implements AppendableResourceCollection, Cloneable

Base class for ResourceCollections that nest multiple ResourceCollections.

Since:

Ant 1.7

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
BaseResourceCollectionContainer()	Create a new BaseResourceCollectionContainer.
BaseResourceCollectionContainer(Project project)	Create a new BaseResourceCollectionContainer.

Method Summary

Modifier and Type	Method	Description
void	add(ResourceCollection c)	Add a ResourceCollection to the container.
void	addAll(Collection<? extends ResourceCollection> c)	Add the Collection of ResourceCollections to the container.
void	clear()	Clear the container.
Object	clone()	Implement clone.
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.
protected abstract Collection<Resource>	getCollection()	Template method for subclasses to return a Collection object of Resources.
final List<ResourceCollection>	getResourceCollections()	Get the nested ResourceCollections.
boolean	isCache()	Learn whether to cache collections.
boolean	isFilesystemOnly()	Fulfill the ResourceCollection contract.
final 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 BaseResourceCollectionContainer 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, 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

Constructor Details

BaseResourceCollectionContainer

public BaseResourceCollectionContainer()

Create a new BaseResourceCollectionContainer.

BaseResourceCollectionContainer

public BaseResourceCollectionContainer(Project project)

Create a new BaseResourceCollectionContainer.

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.

isCache

public boolean isCache()

Learn whether to cache collections. Default is true.

Returns:

boolean cache flag.

clear

public void clear()
           throws BuildException

Clear the container.

Throws:

BuildException - on error.

add

public void add(ResourceCollection c)
         throws BuildException

Add a ResourceCollection to the container.

Specified by:

add in interface AppendableResourceCollection

Parameters:

c - the ResourceCollection to add.

Throws:

BuildException - on error.

addAll

public void addAll(Collection<? extends ResourceCollection> c)
            throws BuildException

Add the Collection of ResourceCollections to the container.

Parameters:

c - the Collection whose elements to add.

Throws:

BuildException - on error.

iterator

public final Iterator<Resource> iterator()

Fulfill the ResourceCollection contract. The Iterator returned will throw ConcurrentModificationExceptions if ResourceCollections are added to this container while the Iterator is in use.

Specified by:

iterator in interface Iterable<Resource>

Returns:

a "fail-fast" Iterator.

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:

whether this is a filesystem-only resource collection.

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.

getResourceCollections

public final List<ResourceCollection> getResourceCollections()

Get the nested ResourceCollections.

Returns:

List.

getCollection

protected abstract Collection<Resource> getCollection()

Template method for subclasses to return a Collection object of Resources.

Returns:

Collection.

clone

public Object clone()

Implement clone. The set of nested resource collections is shallowly cloned.

Overrides:

clone in class DataType

Returns:

a cloned instance.

toString

public String toString()

Format this BaseResourceCollectionContainer as a String.

Overrides:

toString in class DataType

Returns:

a descriptive String.