Class DependencyHandler

All Implemented Interfaces:
DependencyTags, IO, ContentHandler

public class DependencyHandler extends AbstractXMLHandler implements DependencyTags
Class for dependency specific implementation of xml handler.
Rahol Kumar, Alexander Schultheis
  • Field Details


      public static final String HANDLER_NAME
      Name of the current handler. Value is "DependencyHandler".
      See Also:
  • Constructor Details

  • Method Details

    • getName

      public String getName()
      Each io component must have a name that is used in IOFactory.newIO(String). The name must be unique thus it is usefull to use a short description or to the class name ( this.getClass().getName()).
      Specified by:
      getName in interface IO
      Returns the name of the io component.
    • getObject

      public Object getObject()
      After parsing the document, this method must be called to get the Object. This method can only be called once, because after calling the internal variables are resetted to reuse the object.
      Specified by:
      getObject in class AbstractXMLHandler
    • isHandlerFor

      public boolean isHandlerFor(String uri, String localName, String qName, Attributes attributes)
      Queries the handler for possible handling of the given (SAX-)parameters
      Specified by:
      isHandlerFor in class AbstractXMLHandler
    • startElement

      public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException
      Specified by:
      startElement in interface ContentHandler
    • characters

      public void characters(char[] ch, int start, int length)

      Appends the given characters, at the given position, to the internal StringBuffer

      Appends the given characters, at the given position, to the internal StringBuffer. Here, only a description for dependency types is read and added to the objects.

      Specified by:
      characters in interface ContentHandler
      characters in class AbstractXMLHandler
    • endElement

      public void endElement(String uri, String localName, String qName)
      Specified by:
      endElement in interface ContentHandler
    • subHandlerFinishedWithObject

      public void subHandlerFinishedWithObject(Object subHandlerObject)
      Specified by:
      subHandlerFinishedWithObject in class AbstractXMLHandler
    • isHandlerFor

      public boolean isHandlerFor(Class value)
      Checks if the io component is capable to perform the operation for objects of this class.

      A typical implementation looks like:

       public boolean isHandlerFor(Class value) {
              if (DataObject.class.isAssignableFrom(value))
                      return true;
              return false;
      Specified by:
      isHandlerFor in interface IO
      value - The class that has to be checked.
      Results true if the class can oeprate with the given class.
    • copy

      public IO copy()
      overwritten copy-method from Object; use it to copy a complete operator
      Specified by:
      copy in interface IO