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:

java.lang.Cloneable, ResourceCollection

Direct Known Subclasses:

Difference, Intersect, Union

public abstract class BaseResourceCollectionContainer
extends DataType
implements ResourceCollection, java.lang.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

BaseResourceCollectionContainer()

Method Summary

void	add(ResourceCollection c) Add a ResourceCollection to the container.
void	addAll(java.util.Collection c) Add the Collection of ResourceCollections to the container.
void	clear() Clear the container.
java.lang.Object	clone() Implement clone.
protected void	dieOnCircularReference(java.util.Stack stk, Project p) Overrides the version of DataType to recurse on all DataType child elements that may have been added.
protected abstract java.util.Collection	getCollection() Template method for subclasses to return a Collection object of Resources.
protected java.util.List	getResourceCollections() Get the nested ResourceCollections.
boolean	isCache() Learn whether to cache collections.
boolean	isFilesystemOnly() Fulfill the ResourceCollection contract.
java.util.Iterator	iterator() Fulfill the ResourceCollection contract.
void	setCache(boolean b) Set whether to cache collections.
int	size() Fulfill the ResourceCollection contract.
java.lang.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, getDataTypeName, getRefid, invokeCircularReferenceCheck, isChecked, isReference, noChildrenAllowed, 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

Constructor Detail

BaseResourceCollectionContainer

public BaseResourceCollectionContainer()

Method Detail

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.

Parameters:

c - the ResourceCollection to add.

Throws:

BuildException - on error.

addAll

public void addAll(java.util.Collection 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 java.util.Iterator 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 ResourceCollection

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(java.util.Stack 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

protected final java.util.List getResourceCollections()

Get the nested ResourceCollections.

Returns:

List.

getCollection

protected abstract java.util.Collection getCollection()

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

Returns:

Collection.

clone

public java.lang.Object clone()

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

Overrides:

clone in class DataType

Returns:

a cloned instance.

toString

public java.lang.String toString()

Format this BaseResourceCollectionContainer as a String.

Overrides:

toString in class DataType

Returns:

a descriptive String.