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## org.biojava.bio.seq.io.filterxml
Class XMLFilterHandler

    java.lang.Object
      org.biojava.bio.seq.io.filterxml.XMLFilterHandler

    public class XMLFilterHandler

extends Object

Factory producing content handlers for parsing FilterXML elements.

An XMLFilterHandler object is a collection of individual StAX handlers for parsing FilterXML documents. It uses XMLAnnotationTypeHandler to parse `byAnnotationType` elements. To handle an individual XML filter, you should call the getStAXContentHandler method

Example:

           // Setup
           XMLFilterHandler filterHandler = new XMLFilterHandler();
           Reader xmlFile = new FileReader("featurefilter.xml");

           // Create an XML parser
           SAXParserFactory spf = SAXParserFactory.newInstance();
           spf.setNamespaceAware(true);
           XMLReader parser = spf.newSAXParser().getXMLReader();

           // Create a new handler for this document
           XMLFilterHandler.FilterHandler handler = filterHandler.getStAXContentHandler();
           parser.setContentHandler(new SAX2StAXAdaptor(handler));

           // Parse the file and retrieve the FeatureFilter
           parser.parse(new InputSource(xmlFile));
           FeatureFilter filter = handler.getFeatureFilter();

Since:
  1.3
Author:
  Thomas Down

Nested Class Summary
`static interface` | `XMLFilterHandler.FilterHandler` StAXContentHandler for a particular type of FeatureFilter.
`static interface` | `XMLFilterHandler.FilterHandlerFactory` Factory of StAXContentHandlers for a particular type of FeatureFilter.

Constructor Summary
`XMLFilterHandler()` Construct a new XMLFilterHandler which can parse the builtin types of `FeatureFilter`.

Method Summary
`XMLFilterHandler.FilterHandler` | `getHandler(String nsURI, String localName)` Retrieve a `FilterHandler` for the specified tag name.
`XMLFilterHandler.FilterHandler` | `getStAXContentHandler()` Return a StAXContentHandler which can deal with any FilterXML construct known to this class.
`void` | `registerHandlerFactory(String nsURI, String localName, XMLFilterHandler.FilterHandlerFactory factory)` Register a factory used to create handlers for the specified tag name

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

Constructor Detail

### XMLFilterHandler

    public XMLFilterHandler()

  Construct a new XMLFilterHandler which can parse the builtin types of `FeatureFilter`.

Method Detail

### registerHandlerFactory

    public void registerHandlerFactory(String nsURI,
                                       String localName,
                                       XMLFilterHandler.FilterHandlerFactory factory)

  Register a factory used to create handlers for the specified tag name

### getHandler

    public XMLFilterHandler.FilterHandler getHandler(String nsURI,
                                                     String localName)
                                              throws SAXException

  Retrieve a `FilterHandler` for the specified tag name.

  Throws:
    `SAXException`

### getStAXContentHandler

    public XMLFilterHandler.FilterHandler getStAXContentHandler()

  Return a StAXContentHandler which can deal with any FilterXML construct known to this class.

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