Package com.luciad.util

Class TLcdFilteredFunction

java.lang.Object

com.luciad.util.TLcdFilteredFunction

All Implemented Interfaces:

ILcdFunction

public class TLcdFilteredFunction
extends Object
implements ILcdFunction

An ILcdFunction decorator the adds filtering capabilities to an existing function. Before applying the existing function on an object, this function will first test if the object passes a specified filter. If the filter is set to null, no filtering is done and this function will directly delegate to the existing function.

Constructor Summary

Constructors

Constructor	Description
TLcdFilteredFunction(ILcdFunction aFunction)	Creates a new filtered function using a specified function.

Method Summary

Modifier and Type	Method	Description
boolean	applyOn(Object o)	Applies the currently set function to the specified object if this object is accepted by the current filter.
ILcdFilter	getFilter()	Returns the current filter.
ILcdFunction	getFunction()	Returns the actual function that is applied to objects if they have been accepted by the current filter.
void	setFilter(ILcdFilter aFilter)	Sets the filter to use when applying this function.
void	setFunction(ILcdFunction aFunction)	Sets the actual to function to apply when objects have been accepted by the current filter.

Methods inherited from class java.lang.Object

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

Constructor Details

TLcdFilteredFunction

public TLcdFilteredFunction(ILcdFunction aFunction)

Creates a new filtered function using a specified function. The new filtered function will not perform filtering until a filter has been set.

Parameters:

aFunction - the actual function to apply to objects.

See Also:

• setFilter(com.luciad.util.ILcdFilter)

Method Details

getFunction

public ILcdFunction getFunction()

Returns the actual function that is applied to objects if they have been accepted by the current filter.

Returns:

the actual function

See Also:

• setFunction(com.luciad.util.ILcdFunction)

setFunction

public void setFunction(ILcdFunction aFunction)

Sets the actual to function to apply when objects have been accepted by the current filter.

Parameters:

aFunction - the new function to apply

See Also:

• getFunction()

getFilter

public ILcdFilter getFilter()

Returns the current filter.

Returns:

the current filter

See Also:

• setFilter(com.luciad.util.ILcdFilter)

setFilter

public void setFilter(ILcdFilter aFilter)

Sets the filter to use when applying this function.

Parameters:

aFilter - the new filter

See Also:

• getFilter()

applyOn

public boolean applyOn(Object o)
                throws IllegalArgumentException

Applies the currently set function to the specified object if this object is accepted by the current filter. If the object is not accepted, this method simply returns.

Specified by:

applyOn in interface ILcdFunction

Parameters:

o - the object on which to apply the current function

Returns:

true if the object was accepted by the filter and the function was applied successfully; false otherwise

Throws:

IllegalArgumentException - when the specified object is not a valid argument for the current function

See Also:

• getFunction()
• getFilter()