Package com.luciad.lucy.util

Class ALcyCompositeFilter<T>

java.lang.Object

com.luciad.lucy.util.ALcyCompositeFilter<T>

All Implemented Interfaces:

ILcdChangeSource, ILcdDynamicFilter<T>, ILcdFilter<T>, Serializable, Predicate<T>

Direct Known Subclasses:

TLcyCompositeAndFilter

public abstract class ALcyCompositeFilter<T>
extends Object
implements ILcdDynamicFilter<T>

Abstract implementation of a composite filter according to composite design pattern. The exact behavior of how the added filters are combined, is left up to the sub-classes. Holds a collection of non null ILcdFilter instances.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ALcyCompositeFilter()	Constructs a new ALcyCompositeFilter, having no associated ILcdFilters.

Method Summary

Modifier and Type	Method	Description
void	addChangeListener(ILcdChangeListener aListener)	Registers the given listener so it will receive change events from this source.
void	addFilter(ILcdFilter<T> aFilter)	Adds the given filter to this composite filter.
protected void	fireChangeEvent()	Indicates this filter has changed.
ILcdFilter<T>	getFilter(int aIndex)	Returns the filter at the given index.
int	getFilterCount()	Returns the amount if ILcdFilters currently associated.
void	removeChangeListener(ILcdChangeListener aListener)	Removes the specified listener so it is no longer notified.
void	removeFilter(ILcdFilter<T> aFilter)	Removes the given filter from this composite filter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.luciad.util.ILcdFilter

accept, test

Methods inherited from interface java.util.function.Predicate

and, negate, or

Constructor Details

ALcyCompositeFilter

public ALcyCompositeFilter()

Constructs a new ALcyCompositeFilter, having no associated ILcdFilters.

Method Details

addFilter

public void addFilter(ILcdFilter<T> aFilter)

Adds the given filter to this composite filter.

Parameters:

aFilter - The filter to add. Must be different from null.

See Also:

• removeFilter(com.luciad.util.ILcdFilter)

removeFilter

public void removeFilter(ILcdFilter<T> aFilter)

Removes the given filter from this composite filter. Does nothing if the given ILcdFilter is not associated to this composite filter.

Parameters:

aFilter - The filter to remove.

See Also:

• addFilter(com.luciad.util.ILcdFilter)

getFilterCount

public int getFilterCount()

Returns the amount if ILcdFilters currently associated.

Returns:

the amount if ILcdFilters currently associated.

See Also:

• getFilter(int)

getFilter

public ILcdFilter<T> getFilter(int aIndex)

Returns the filter at the given index.

Parameters:

aIndex - The index to retrieve the ILcdFilter at. 0 <= aIndex <= getFilterCount()

Returns:

the filter at the given index.

See Also:

• getFilterCount()

addChangeListener

public void addChangeListener(ILcdChangeListener aListener)

Description copied from interface: ILcdChangeSource

Registers the given listener so it will receive change events from this source.

In case you need to register a listener which keeps a reference to an object with a shorter life-time than this change source, you can use a ALcdWeakChangeListener instance as change listener.

Specified by:

addChangeListener in interface ILcdChangeSource

Parameters:

aListener - The listener to be notified when a change has happened.

See Also:

• ILcdChangeSource.removeChangeListener(ILcdChangeListener)
• ALcdWeakChangeListener

removeChangeListener

public void removeChangeListener(ILcdChangeListener aListener)

Description copied from interface: ILcdChangeSource

Removes the specified listener so it is no longer notified.

Specified by:

removeChangeListener in interface ILcdChangeSource

Parameters:

aListener - The listener to remove.

fireChangeEvent

protected void fireChangeEvent()

Indicates this filter has changed.

Extensions of this class should not call this method when a filter is added or removed. In such cases a change event is already fired.

When a filter which is added implements ILcdChangeSource this class will already fire a change event when the added filter indicates it is changed. In such cases, it is not needed to call this method from the subclass.