net.sf.saxon.tree

Class AttributeLocation

java.lang.Object

net.sf.saxon.tree.AttributeLocation

All Implemented Interfaces:

SourceLocator, Location, Locator

public class AttributeLocation
extends Object
implements Location

A Location corresponding to an attribute in a document (often a stylesheet)

Constructor Summary

Constructors

Constructor and Description
AttributeLocation(NodeInfo element, StructuredQName attributeName)
AttributeLocation(StructuredQName elementName, StructuredQName attributeName, Location location)

Method Summary

Modifier and Type	Method and Description
StructuredQName	getAttributeName() Get the name of the containing attribute
int	getColumnNumber() Get the column number.
StructuredQName	getElementName() Get the name of the containing element
NodeInfo	getElementNode() Get the reference to the containing element node, if available.
int	getLineNumber() Get the line number.
String	getPublicId() Get the Public ID
String	getSystemId() Get the system ID.
Location	saveLocation() Get an immutable copy of this Location object.
void	setElementNode(NodeInfo node) Add a reference to the containing element node.

Methods inherited from class java.lang.Object

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

Constructor Detail

AttributeLocation

public AttributeLocation(NodeInfo element,
                         StructuredQName attributeName)

AttributeLocation

public AttributeLocation(StructuredQName elementName,
                         StructuredQName attributeName,
                         Location location)

Method Detail

setElementNode

public void setElementNode(NodeInfo node)

Add a reference to the containing element node. This needs care because we don't want to retain links to the source stylesheet at run-time; it is therefore done only for static errors

getElementNode

public NodeInfo getElementNode()

Get the reference to the containing element node, if available.

Returns:

the containing element node, or null if not available or not applicable.

getElementName

public StructuredQName getElementName()

Get the name of the containing element

Returns:

the name of the containing element in the stylesheet

getAttributeName

public StructuredQName getAttributeName()

Get the name of the containing attribute

Returns:

the name of the containing attribute in the stylesheet. May be null if the XPath expression is contained in a text node

getColumnNumber

public int getColumnNumber()

Get the column number. This column number is relative to the line identified by the line number. Column numbers start at 1.

Specified by:

getColumnNumber in interface SourceLocator

Specified by:

getColumnNumber in interface Location

Specified by:

getColumnNumber in interface Locator

Returns:

the column number, or -1 if the information is not available.

getSystemId

public String getSystemId()

Get the system ID. This should be the system identifier of an XML external entity; if a stylesheet module comprises multiple external entities, the distinction should be retained. This means, for example, that an instruction in a stylesheet can have a different system identifier from its parent instruction. However, SAX parsers only provide location information at the element level, so when part of an XPath expression is in a different external entity from other parts of the same expression, this distinction is lost.

The system identifier of a node is in general not the same as its base URI. The base URI is affected by xml:base attributes; the system identifier is not.

Specified by:

getSystemId in interface SourceLocator

Specified by:

getSystemId in interface Location

Specified by:

getSystemId in interface Locator

Returns:

the system ID, or null if the information is not available.

getPublicId

public String getPublicId()

Get the Public ID

Specified by:

getPublicId in interface SourceLocator

Specified by:

getPublicId in interface Location

Specified by:

getPublicId in interface Locator

Returns:

usually null

getLineNumber

public int getLineNumber()

Get the line number. This line number is relative to the external entity identified by the system identifier. Line numbers start at 1. The value may be an approximation; SAX parsers only provide line number information at the level of element nodes.

Specified by:

getLineNumber in interface SourceLocator

Specified by:

getLineNumber in interface Location

Specified by:

getLineNumber in interface Locator

Returns:

the line number, or -1 if the information is not available.

saveLocation

public Location saveLocation()

Get an immutable copy of this Location object. By default Location objects may be mutable, so they should not be saved for later use. The result of this operation holds the same location information, but in an immutable form.

Specified by:

saveLocation in interface Location