How to use

addFid

method

in

org.geotools.filter.FidFilter

/**
 * Sets the filter attributes.  Called when attributes are encountered by
 * the filter filter.  Puts them in a hash map by thier name and  value.
 *
 * @param atts the attributes to set.
 */
public void setAttributes(Attributes atts) {
  LOGGER.finer("got attribute: " + atts.getLocalName(0) + ", "
    + atts.getValue(0));
  LOGGER.finer("current state: " + curState);
  if (curState.equals("fid")) {
    LOGGER.finer("is a fid");
    ((FidFilter) curFilter).addFid(atts.getValue(0));
    LOGGER.finer("added fid");
  } else {
    for (int i = 0; i < atts.getLength(); i++) {
      this.attributes.put(atts.getLocalName(i), atts.getValue(i));
    }
  }
}

/**
 * Sets the filter attributes.  Called when attributes are encountered by
 * the filter filter.  Puts them in a hash map by thier name and  value.
 *
 * @param atts the attributes to set.
 */
public void setAttributes(Attributes atts) {
  LOGGER.finer("got attribute: " + atts.getLocalName(0) + ", "
    + atts.getValue(0));
  LOGGER.finer("current state: " + curState);
  if (curState.equals("fid")) {
    LOGGER.finer("is a fid");
    ((FidFilter) curFilter).addFid(atts.getValue(0));
    LOGGER.finer("added fid");
  } else {
    for (int i = 0; i < atts.getLength(); i++) {
      this.attributes.put(atts.getLocalName(i), atts.getValue(i));
    }
  }
}

public void visit(FidFilter filter) {
  FidFilter copy = ff.createFidFilter();
  
  String[] fids = filter.getFids();
  for (int i = 0; i < fids.length; i++) {
    copy.addFid(fids[i]);
  }
  
  pages.push(copy);
}

FidFilter fidFilter = FILTER_FACT.createFidFilter();
Element fidElement = (Element) child;
fidFilter.addFid(fidElement.getAttribute("fid"));
      fidFilter.addFid(fidElement.getAttribute("fid"));

create.addFid("road.rd1");
create.addFid("road.rd2");

private FidFilter getEncodableFilter(Filter unEncodableFilter)
  throws IOException, FactoryRegistryException, IllegalAttributeException {
  // this is very similar to getFidSet - the reason is so that we
  // don't spend time constructing geometries when we don't need
  // to, but we probably could get some better code reuse.
  DefaultQuery query = new DefaultQuery();
  query.setPropertyNames(new String[0]);
  query.setFilter(unEncodableFilter);
  SimpleFeatureCollection features = getFeatures(unEncodableFilter);
  FilterFactory ff = FilterFactoryFinder.createFilterFactory();
  FidFilter fidFilter = ff.createFidFilter();
  SimpleFeatureIterator it = features.features();
  try {
    while( it.hasNext() ) {
      SimpleFeature feature = (SimpleFeature) it.next();
      fidFilter.addFid(feature.getID());
    }
  } finally {
   features.close( it );  
  }
  return fidFilter;
}