com.luciad.fusion.tilestore.metadata

LuciadLightspeedClass TLfnThemeMetadataTraverser

java.lang.Object

com.luciad.fusion.tilestore.metadata.TLfnThemeMetadataTraverser

public class TLfnThemeMetadataTraverser
extends Object

The traverser is used to traverse a theme's resources. The traverser is to be used in conjunction with a Visitor.

The visitor can conveniently perform a depth-first traversal of the entire theme's resource graph by calling the traverse(com.luciad.fusion.tilestore.metadata.TLfnThemeMetadata, com.luciad.fusion.tilestore.metadata.ALfnResourceMetadataVisitor) method from ALfnResourceMetadataVisitor.visit(TLfnThemeMetadata). The traverser will visit each resource in the theme exactly once, avoiding duplicates and loops introduced by nested themes.

The traverser relies on a resolver to traverse to referenced resources. Unresolved resources are ignored (not visited).

Since:

10.0

See Also:

ALfnResourceMetadataVisitor

Constructor Summary

Constructors

Constructor and Description
TLfnThemeMetadataTraverser(ILfnResourceMetadataResolver aResolver) Creates a traverser to traverse a theme's resource model, using a resolver.

Method Summary

Modifier and Type	Method and Description
void	traverse(TLfnThemeMetadata aTheme, ALfnResourceMetadataVisitor aVisitor) Traverses a theme and lets the visitor visit each directly referenced resource that has not yet been encountered by this traverser.

Methods inherited from class java.lang.Object

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

Constructor Detail

TLfnThemeMetadataTraverser

public TLfnThemeMetadataTraverser(ILfnResourceMetadataResolver aResolver)

Creates a traverser to traverse a theme's resource model, using a resolver.

Parameters:

aResolver - the resolver to use.

Method Detail

traverse

public void traverse(TLfnThemeMetadata aTheme,
                     ALfnResourceMetadataVisitor aVisitor)

Traverses a theme and lets the visitor visit each directly referenced resource that has not yet been encountered by this traverser. The given theme itself will not be visited. Traversing will silently ignore any resources for which the resolver throws. Such resources will not be visited and traversing will skip to the next resource.

Parameters:

aTheme - the theme to traverse

aVisitor - the visitor