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LocatorImpl


org.xml.sax.helpers

Class LocatorImpl

  • All Implemented Interfaces:
    Locator
    Direct Known Subclasses:
    Locator2Impl


    public class LocatorImpl
    extends Object
    implements Locator
    Provide an optional convenience implementation of Locator.
    This module, both source code and documentation, is in the Public Domain, and comes with NO WARRANTY. See http://www.saxproject.org for further information.

    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:
    SAX 1.0
    See Also:
    Locator
    • Constructor Detail

      • 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 Detail

      • 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()


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