edu.harvard.hul.ois.jhove

Class PropertyPath

java.lang.Object

edu.harvard.hul.ois.jhove.PropertyPath

public class PropertyPath
extends Object

A description of the location of a Property in a RepInfo object. Properties can be nested under other properties, in lists, maps, or subproperties. This class provides a general way to specify their location. For the moment, only paths by name are fully supported.

Author:

Gary McGath

Constructor Summary

Constructors

Constructor and Description
PropertyPath() No-argument constructor.
PropertyPath(PropertyPath path) Cloning constructor.
PropertyPath(String[] pathArray) String array constructor.

Method Summary

Modifier and Type	Method and Description
void	addPropertyIndex(int idx) Adds an index to the path, for an indexed property.
void	addPropertyKey(Object obj) Adds a key to the path, for a property map.
void	addPropertyName(String str) Adds a property name to the path.
Property	locateProperty(RepInfo info) Walk down the path and return the specified Property.
Property	locateProperty(RepInfo info, boolean trace) Walk down the path and return the specified Property.

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyPath

public PropertyPath()

No-argument constructor. Creates an empty path.

PropertyPath

public PropertyPath(PropertyPath path)

Cloning constructor. This creates a new pathInfo list, whose elements are shared with the original PropertyPath's list.

PropertyPath

public PropertyPath(String[] pathArray)

String array constructor. This allows creation of a path in a common and simple case: a hierarchy of named subproperties. It's the equivalent of creating an empty PropertyPath and then calling addElement successively with each of the strings in the array.

Method Detail

addPropertyName

public void addPropertyName(String str)

Adds a property name to the path.

addPropertyKey

public void addPropertyKey(Object obj)

Adds a key to the path, for a property map.

addPropertyIndex

public void addPropertyIndex(int idx)

Adds an index to the path, for an indexed property.

locateProperty

public Property locateProperty(RepInfo info)

Walk down the path and return the specified Property.

Parameters:

info - The RepInfo object to search

Returns:

The specified Property if found, otherwise null.

locateProperty

public Property locateProperty(RepInfo info,
                               boolean trace)

Walk down the path and return the specified Property.

Parameters:

info - The RepInfo object to search

trace - If true, write debugging information to standard output.

Returns:

The specified Property if found, otherwise null.