• All Implemented Interfaces:
    SearchContentHandler
    public class SearchContentFilter
extends Object
implements SearchContentHandler

    Filtering implementation of SearchContentHandler that by default passes all messages on to the next delegate in the chain.

    In this handler, all info will be passed onto a delegate handler. You can build up a chain of filters by using one filter as the delegate for another. When you over-ride a method in a filter, you can modify any state you wish. If you want that to propogate on, you should call the method on yourself via super.(), if not, just return.

    It is your responsibility to ensure that the events emitted from your filter are sensible. In particular, start/end messages must be paired even after filtering.

    Example

     // we have a handler from somewhere
 SearchContentHandler handler = ...;

 // now we are going to mutate all "score" notifications to Double instances
 // from strings
 SearchContentHandler filter = new SearchContentFilter() {
   public void addHitProperty(Object key, Object value) {
     if("score".equals(key)) {
       if(value instanceof String) {
         value = new Double(value);
       }
     }
     super(key, value);
   }
 };
    Since:
    1.3
    Author:
    Matthew Pocock

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void addHitProperty​(Object key, Object value)

      The addHitProperty method adds a key/value pair containing some property of a particular hit.
      void addSearchProperty​(Object key, Object value)

      The addSearchProperty method adds a key/value pair containing some property of the overall search result.
      void addSubHitProperty​(Object key, Object value)

      The addSubHitProperty method adds a key/value pair containing some property of a particular subhit.
      void endHeader()

      The endHeader method indicates the end of a formatted header.
      void endHit()

      The endHit method indicates the end of a formatted hit.
      void endSearch()

      The endSearch method indicates the end of useful search information.
      void endSubHit()

      The endSubHit method indicates the end of a formatted subhit.
      boolean getMoreSearches()

      getMoreSearches returns the state of the SearchContentHandler with respect to further searches from its data source.
      void setDatabaseID​(String databaseID)

      setDatabaseID identifies the database searched by a name, ID or URN.
      void setMoreSearches​(boolean val)

      setMoreSearches sets the state of the SearchContentHandler's expectation of receiving more results.
      void setQueryID​(String queryID)

      setQueryID identifies the query sequence by a name, ID or URN.
      void startHeader()

      The startHeader method indicates the start of a formatted header.
      void startHit()

      The startHit method indicates the start of a formatted hit.
      void startSearch()

      The startSearch method indicates the start of useful search information.
      void startSubHit()

      The startSubHit method indicates the start of a formatted subhit.