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## net.sf.saxon.event
Class LocationCopier

    java.lang.Object
      net.sf.saxon.event.LocationCopier

All Implemented Interfaces:
  CopyInformee, LocationProvider, SourceLocationProvider

    public class LocationCopier

extends Object
implements CopyInformee, SourceLocationProvider

A Receiver that can be inserted into an event pipeline to copy location information. The class acts as a LocationProvider, so it supports getSystemId() and getLineNumber() methods; the location returned can vary for each node, and is set by the class generating the events. The class is used when it is necessary to copy a subtree along with its location information; for example, when copying an inline schema within a stylesheet to a separate schema document.

Note: prior to 9.2, the LocationCopier was a ProxyReceiver that passed all events on the pipeline unchanged. It no longer does this, instead it is found as the LocationProvider on a pipeline, but does not itself see the pipeline events.

Constructor Summary
`LocationCopier(boolean wholeDocument)`

Method Summary
`int` | `getColumnNumber(long locationId)` Get the column number within the document, entity, or module containing a particular location
`int` | `getLineNumber(long locationId)` Get the line number within the document, entity or module containing a particular location
`String` | `getSystemId(long locationId)` Get the URI of the document, entity, or module containing a particular location
`int` | `notifyElementNode(NodeInfo element)` Provide information about the node being copied.

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

Constructor Detail

### LocationCopier

    public LocationCopier(boolean wholeDocument)

Method Detail

### notifyElementNode

    public int notifyElementNode(NodeInfo element)

  Provide information about the node being copied. This method is called immediately before the startElement call for the element node in question.

  Specified by:
    `notifyElementNode` in interface `CopyInformee`
  Parameters:
    `element` - the node being copied, which must be an element node
  Returns:
    int a locationId to be used when referring to this element in the pipeline

### getSystemId

    public String getSystemId(long locationId)

  Description copied from interface: `LocationProvider`
  Get the URI of the document, entity, or module containing a particular location

  Specified by:
    `getSystemId` in interface `LocationProvider`
  Parameters:
    `locationId` - identifier of the location in question (as passed down the Receiver pipeline)
  Returns:
    the URI of the document, XML entity or module. For a SourceLocationProvider this will be the URI of the document or entity (the URI that would be the base URI if there were no xml:base attributes). In other cases it may identify the query or stylesheet module currently being executed.

### getLineNumber

    public int getLineNumber(long locationId)

  Description copied from interface: `LocationProvider`
  Get the line number within the document, entity or module containing a particular location

  Specified by:
    `getLineNumber` in interface `LocationProvider`
  Parameters:
    `locationId` - identifier of the location in question (as passed down the Receiver pipeline)
  Returns:
    the line number within the document, entity or module, or -1 if no information is available.

### getColumnNumber

    public int getColumnNumber(long locationId)

  Description copied from interface: `LocationProvider`
  Get the column number within the document, entity, 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, entity, or module, or -1 if this is not available

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