## net.sf.saxon.event
Class ContentHandlerProxyLocator

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

All Implemented Interfaces:
  org.xml.sax.Locator

    public class ContentHandlerProxyLocator

extends java.lang.Object
implements org.xml.sax.Locator

Implementation of Locator, used to supply location information to the ContentHandler.

When the ContentHandler is used to receive the results of a query or stylesheet, the information supplied by the standard methods such as `getSystemId()` and `getLineNumber()` relates to the position of the expression/instruction in the stylesheet or query that caused the relevant nodes to be output.

If the ContentHandler is used in other contexts, for example as the destination of an IdentityTransformer, the information reflects the position in the source document.

If the output property `saxon:supply-source-locator` was set to the value "yes" (which in turn requires that tracing was enabled at compile time), the Locator will also contain information about the current location in the source document (specifically, the position of the context node). This will not always be 100% accurate, since there is some buffering of events in the output pipeline: it reflects the context node at the time the event reaches the ContentHandler, which may not be the same as the context node at the time the relevant instruction was executed; however, it still provides some information that may be useful for diagnostics.

Constructor Summary
`ContentHandlerProxyLocator(ContentHandlerProxy parent)` Create the Locator for a ContentHandlerProxy

Method Summary
`int` `getColumnNumber()` Get the column number
`java.util.Stack` `getContextItemStack()` Get the current item stack.
`int` `getLineNumber()` Get the line number
`java.lang.String` `getPublicId()` Get the Public ID
`java.lang.String` `getSystemId()` Get the System ID

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

Constructor Detail

### ContentHandlerProxyLocator

    public ContentHandlerProxyLocator(ContentHandlerProxy parent)

  Create the Locator for a ContentHandlerProxy

  Parameters:
    `parent` - the ContentHandlerProxy

Method Detail

### getPublicId

    public java.lang.String getPublicId()

  Get the Public ID

  Specified by:
    `getPublicId` in interface `org.xml.sax.Locator`
  Returns:
    null (always)

### getSystemId

    public java.lang.String getSystemId()

  Get the System ID

  Specified by:
    `getSystemId` in interface `org.xml.sax.Locator`
  Returns:
    the system ID giving the location in the query or stylesheet of the most recent event notified

### getLineNumber

    public int getLineNumber()

  Get the line number

  Specified by:
    `getLineNumber` in interface `org.xml.sax.Locator`
  Returns:
    the line number giving the location of the most recent event notified

### getColumnNumber

    public int getColumnNumber()

  Get the column number

  Specified by:
    `getColumnNumber` in interface `org.xml.sax.Locator`
  Returns:
    -1 (always)

### getContextItemStack

    public java.util.Stack getContextItemStack()

  Get the current item stack. This is a Stack, whose members are objects of class `Item`. The top item in the stack is the context node or atomic value; items further down the stack represent previous context node or atomic value

  Returns:
    the stack of context items

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