Package net.ontopia.topicmaps.utils

Class NameGrabber

java.lang.Object

net.ontopia.topicmaps.utils.NameGrabber

All Implemented Interfaces:

Function<TopicIF,NameIF>

public class NameGrabber
extends Object
implements Function<TopicIF,NameIF>

INTERNAL: Grabber that grabs the most suitable name from a topic, measured by whether it contains a particular theme in its scope. If the topic has a variant name with the given theme the belonging basename will be chosen. If not, the base name in the least constrained scope will be chosen.

Since:

1.1

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	grabOnlyTopicName	INTERNAL: Determine if grab should deliver only the most appropiate basename even if there is a more apropiate variant.
protected boolean	indicatorVariant
protected Collection<TopicIF>	scope	INTERNAL: Alternatively to themeIndicator the basename scope (collection of TopicIF objects) to decide suitablity can be setup instantly.
protected LocatorIF	themeIndicator	PROTECTED: The subject indicator of the theme used to decide suitability.
protected Collection<TopicIF>	variantScope	INTERNAL: A collection containing topic themes used for specifying the variant name scope.

Constructor Summary

Constructors

Constructor	Description
NameGrabber(Collection<TopicIF> scope)	INTERNAL: Creates the grabber and sets the comparator to be a ScopedIFComparator using the specified scope.
NameGrabber(Collection<TopicIF> basenameScope, Collection<TopicIF> variantScope)	INTERNAL: Creates the grabber and sets the comparator to be a ScopedIFComparator using the specified scope.
NameGrabber(Collection<TopicIF> basenameScope, Collection<TopicIF> variantScope, boolean grabOnlyTopicName)	INTERNAL: Creates the grabber and sets the comparator to be a ScopedIFComparator using the specified scope.
NameGrabber(LocatorIF themeIndicator)	INTERNAL: Creates the grabber and sets the comparator to be a ScopedIFComparator using the least constrained scope.
NameGrabber(LocatorIF themeIndicator, boolean variant)	PUBLIC: Creates the grabber and sets the comparator to be a ScopedIFComparator using the least constrained scope.

Method Summary

Modifier and Type	Method	Description
NameIF	apply(TopicIF topic)	INTERNAL: Grabs the most appropiate base name (or if grabOnlyTopicName is false allow also to return the most appropiate VariantIF instance).
boolean	getGrabOnlyTopicName()	INTERNAL: Gets the grab policy.
void	setGrabOnlyTopicName(boolean grabOnlyTopicName)	INTERNAL: Sets the grab policy, if only instances of BasenameIF should be returned by grab, or also the more appropiate VariantIF.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Function

andThen, compose

Field Detail

themeIndicator

protected LocatorIF themeIndicator

PROTECTED: The subject indicator of the theme used to decide suitability.

indicatorVariant

protected boolean indicatorVariant

scope

protected Collection<TopicIF> scope

INTERNAL: Alternatively to themeIndicator the basename scope (collection of TopicIF objects) to decide suitablity can be setup instantly.

Since:

1.1.2

variantScope

protected Collection<TopicIF> variantScope

INTERNAL: A collection containing topic themes used for specifying the variant name scope.

Since:

1.2.1

grabOnlyTopicName

protected boolean grabOnlyTopicName

INTERNAL: Determine if grab should deliver only the most appropiate basename even if there is a more apropiate variant. Default value is true.

Since:

1.2.2

Constructor Detail

NameGrabber

public NameGrabber(LocatorIF themeIndicator)

INTERNAL: Creates the grabber and sets the comparator to be a ScopedIFComparator using the least constrained scope. Grabs names that have the topic defined by the given PSI locator in their scope. By default the theme is used in the variant scope.

NameGrabber

public NameGrabber(LocatorIF themeIndicator,
                   boolean variant)

PUBLIC: Creates the grabber and sets the comparator to be a ScopedIFComparator using the least constrained scope. Grabs names that have the topic defined by the given PSI locator in their scope.

Parameters:

variant - Whether to use the indicator to set the variant scope (if false it is used for the base name scope)

Since:

2.0

NameGrabber

public NameGrabber(Collection<TopicIF> scope)

INTERNAL: Creates the grabber and sets the comparator to be a ScopedIFComparator using the specified scope. Grabs names that have most in common with specified scope.

Since:

1.1.2

NameGrabber

public NameGrabber(Collection<TopicIF> basenameScope,
                   Collection<TopicIF> variantScope)

INTERNAL: Creates the grabber and sets the comparator to be a ScopedIFComparator using the specified scope. Grabs base names that have most in common with specified scope.

Since:

1.2.1

NameGrabber

public NameGrabber(Collection<TopicIF> basenameScope,
                   Collection<TopicIF> variantScope,
                   boolean grabOnlyTopicName)

INTERNAL: Creates the grabber and sets the comparator to be a ScopedIFComparator using the specified scope. Grabs names (basename or variant, use grabOnlyTopicName to specify the policy) that have most in common with specified scope.

Since:

1.2.2

Method Detail

setGrabOnlyTopicName

public void setGrabOnlyTopicName(boolean grabOnlyTopicName)

INTERNAL: Sets the grab policy, if only instances of BasenameIF should be returned by grab, or also the more appropiate VariantIF.

Since:

1.2.2

getGrabOnlyTopicName

public boolean getGrabOnlyTopicName()

INTERNAL: Gets the grab policy.

Since:

1.2.2

See Also:

setGrabOnlyTopicName(boolean)

apply

public NameIF apply(TopicIF topic)

INTERNAL: Grabs the most appropiate base name (or if grabOnlyTopicName is false allow also to return the most appropiate VariantIF instance). The name returned is the first suitable base name belonging to a variant name found, when the basenames of the give topic have been sorted using the comparator. If there is no suitable base name belonging to a variant name, then the last base name found is returned, corresponding to the least constrained scope.

Specified by:

apply in interface Function<TopicIF,NameIF>

Parameters:

object - The topic whose name is being grabbed; formally an object.

Returns:

A name to display; an object implementing TopicNameIF (or VariantNameIF, see above) or null if the topic has no basenames.