Class LocatorImpl

java.lang.Object

org.xml.sax.helpers.LocatorImpl

All Implemented Interfaces:

Locator

Direct Known Subclasses:

Locator2Impl

public class LocatorImpl
extends Object
implements Locator

Provide an optional convenience implementation of Locator.

This class is available mainly for application writers, who can use it to make a persistent snapshot of a locator at any point during a document parse:

 Locator locator;
 Locator startloc;

 public void setLocator (Locator locator)
 {
         // note the locator
   this.locator = locator;
 }

 public void startDocument ()
 {
         // save the location of the start of the document
         // for future use.
   Locator startloc = new LocatorImpl(locator);
 }

Normally, parser writers will not use this class, since it is more efficient to provide location information only when requested, rather than constantly updating a Locator object.

Since:

1.4, SAX 1.0

See Also:

• Locator

Constructor Summary

Constructors

Constructor	Description
LocatorImpl()	Zero-argument constructor.
LocatorImpl(Locator locator)	Copy constructor.

Method Summary

Modifier and Type	Method	Description
int	getColumnNumber()	Return the saved column number (1-based).
int	getLineNumber()	Return the saved line number (1-based).
String	getPublicId()	Return the saved public identifier.
String	getSystemId()	Return the saved system identifier.
void	setColumnNumber(int columnNumber)	Set the column number for this locator (1-based).
void	setLineNumber(int lineNumber)	Set the line number for this locator (1-based).
void	setPublicId(String publicId)	Set the public identifier for this locator.
void	setSystemId(String systemId)	Set the system identifier for this locator.

Methods declared in class Object

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

Modifier and Type	Method	Description
protected Object	clone()	Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
boolean	equals(Object o)	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. May cause performance issues, deadlocks and hangs.
final Class<? extends Object>	getClass()	Answers the unique instance of java.lang.Class which represents the class of the receiver.
int	hashCode()	Answers an integer hash code for the receiver.
final void	notify()	Causes one thread which is waiting on the receiver to be made ready to run.
final void	notifyAll()	Causes all threads which are waiting on the receiver to be made ready to run.
String	toString()	Answers a string containing a concise, human-readable description of the receiver.
final void	wait()	Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
final void	wait(long time)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
final void	wait(long time, int frac)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

Constructor Details

LocatorImpl

public LocatorImpl()

Zero-argument constructor.

This will not normally be useful, since the main purpose of this class is to make a snapshot of an existing Locator.

LocatorImpl

public LocatorImpl(Locator locator)

Copy constructor.

Create a persistent copy of the current state of a locator. When the original locator changes, this copy will still keep the original values (and it can be used outside the scope of DocumentHandler methods).

Parameters:

locator - The locator to copy.

Method Details

getPublicId

public String getPublicId()

Return the saved public identifier.

Specified by:

getPublicId in interface Locator

Returns:

The public identifier as a string, or null if none is available.

See Also:

• Locator.getPublicId()
• setPublicId(String)

getSystemId

public String getSystemId()

Return the saved system identifier.

Specified by:

getSystemId in interface Locator

Returns:

The system identifier as a string, or null if none is available.

See Also:

• Locator.getSystemId()
• setSystemId(String)

getLineNumber

public int getLineNumber()

Return the saved line number (1-based).

Specified by:

getLineNumber in interface Locator

Returns:

The line number as an integer, or -1 if none is available.

See Also:

• Locator.getLineNumber()
• setLineNumber(int)

getColumnNumber

public int getColumnNumber()

Return the saved column number (1-based).

Specified by:

getColumnNumber in interface Locator

Returns:

The column number as an integer, or -1 if none is available.

See Also:

• Locator.getColumnNumber()
• setColumnNumber(int)

setPublicId

public void setPublicId(String publicId)

Set the public identifier for this locator.

Parameters:

publicId - The new public identifier, or null if none is available.

See Also:

• getPublicId()

setSystemId

public void setSystemId(String systemId)

Set the system identifier for this locator.

Parameters:

systemId - The new system identifier, or null if none is available.

See Also:

• getSystemId()

setLineNumber

public void setLineNumber(int lineNumber)

Set the line number for this locator (1-based).

Parameters:

lineNumber - The line number, or -1 if none is available.

See Also:

• getLineNumber()

setColumnNumber

public void setColumnNumber(int columnNumber)

Set the column number for this locator (1-based).

Parameters:

columnNumber - The column number, or -1 if none is available.

See Also:

• getColumnNumber()