LocationMap

java.lang.Object
- net.sf.saxon.instruct.LocationMap

All Implemented Interfaces:

java.io.Serializable, LocationProvider
```
public class LocationMap
extends java.lang.Object
implements LocationProvider, java.io.Serializable
```
A LocationMap allocates integer codes to (systemId, lineNumber) pairs. The integer codes are held inside an Expression object to track the location of the expression in the source code

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

LocationMap()
Create a location map

Constructors
Constructor	Description
`LocationMap()`	Create a location map

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`allocateLocationId(java.lang.String module, int lineNumber)`	Allocate a location identifier to an expression
`int`	`getColumnNumber(long locationId)`	Get the column number within the document or module containing a particular location
`int`	`getLineNumber(long locationId)`	Get the line number corresponding to a locationId
`java.lang.String`	`getSystemId(long locationId)`	Get the system identifier corresponding to a locationId

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LocationMap
```
public LocationMap()
```
    Create a location map
- Method Detail
  - allocateLocationId
```
public int allocateLocationId(java.lang.String module,
                              int lineNumber)
```
    Allocate a location identifier to an expression
    
    Parameters:
    
    module - the URI (system identifier) of the module
    
    lineNumber - the line number of the expression within the module
    
    Returns:
    
    the corresponding location identifier
  - getSystemId
```
public java.lang.String getSystemId(long locationId)
```
    Get the system identifier corresponding to a locationId
    
    Specified by:
    
    getSystemId in interface LocationProvider
    
    Parameters:
    
    locationId - the location identifier
    
    Returns:
    
    the corresponding system identifier
  - getLineNumber
```
public int getLineNumber(long locationId)
```
    Get the line number corresponding to a locationId
    
    Specified by:
    
    getLineNumber in interface LocationProvider
    
    Parameters:
    
    locationId - the location identifier
    
    Returns:
    
    the corresponding line number
  - getColumnNumber
```
public int getColumnNumber(long locationId)
```
    Description copied from interface: LocationProvider
    
    Get the column number within the document or module containing a particular location
    
    Specified by:
    
    getColumnNumber in interface LocationProvider
    
    Parameters:
    
    locationId - identifier of the location in question (as passed down the Receiver pipeline)
    
    Returns:
    
    the column number within the document or module, or -1 if this is not available

Class LocationMap

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

LocationMap

Method Detail

allocateLocationId

getSystemId

getLineNumber

getColumnNumber