com.raritantechnologies.searchApp.queryFilters
Class DeduplicatingQueryProcessorFilter

java.lang.Object
  com.raritantechnologies.searchApp.QueryProcessorFilter
      com.raritantechnologies.searchApp.queryFilters.DeduplicatingQueryProcessorFilter

All Implemented Interfaces:

IQueryProcessor

public class DeduplicatingQueryProcessorFilter

extends QueryProcessorFilter

De-duplicates IResultSets obtained from one or more proxy SearchSources using some (configurable) field matching criterion. May use another search source to make a decision if two results are the same. Merges the result field values of non-key fields to create a single result with the combined values from the duplicate results (if any). Buffers the deduplicated results so that the pageSize and start record of the initial request can be honored. May re-execute the search in order to achieve the currently requested page size.

Configurable option determines if a union (logical OR) or intersection (logical AND) operation is performed on the result sets from the deduplicated sources.

Max cache size setting is used to ensure that all results are considered before adding deduped results to the output result set.

XML Configuration Template:

   <SourceType name="[ name of DeduplicatingQueryProcessorFilter source]"
             type="QueryProcessorFilterSource"
             sourceFactoryClass = "com.raritantechnologies.searchApp.QueryProcessorFilterFactory"
             filterClass  = "com.raritantechnologies.searchApp.queryFilters.DeduplicatingQueryProcessorFilter"
             inputSource  = "[ name of SearchSource that collects the results to deduplicate ]"  >

      <!-- Specify set of fields to match on -->
      <MatchFields>
        <Field ID="[ field name ]" />
        </Field>
      </MatchFields>
  <SourceType>
 

Developed by Raritan Technologies .

Author:

Ted Sullivan

Field Summary

Fields inherited from class com.raritantechnologies.searchApp.QueryProcessorFilter

theQueryProcessor

Constructor Summary

DeduplicatingQueryProcessorFilter()

Method Summary

IResultSet	executeQuery(java.lang.Integer queryID, ISearchFieldMap searchMap, SourceLoginInfo[] sources, OrderedMap inputParameters, java.lang.Integer pageSize, java.lang.Integer startRec) Base implementation executes the query then starts filter chain.
void	initialize(org.w3c.dom.Element elem) subclasses should override this to initialize themselves.

Methods inherited from class com.raritantechnologies.searchApp.QueryProcessorFilter

doExecuteQuery, filterResultSet, getQueryProcessor, getQueryProcessor, getRealSources, setNextFilter, setQueryProcessor

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DeduplicatingQueryProcessorFilter

public DeduplicatingQueryProcessorFilter()

Method Detail

executeQuery

public IResultSet executeQuery(java.lang.Integer queryID,
                               ISearchFieldMap searchMap,
                               SourceLoginInfo[] sources,
                               OrderedMap inputParameters,
                               java.lang.Integer pageSize,
                               java.lang.Integer startRec)
                        throws QueryProcessorException

Description copied from class: QueryProcessorFilter

Base implementation executes the query then starts filter chain.

Specified by:

executeQuery in interface IQueryProcessor

Overrides:

executeQuery in class QueryProcessorFilter

Throws:

QueryProcessorException

initialize

public void initialize(org.w3c.dom.Element elem)

Description copied from class: QueryProcessorFilter

subclasses should override this to initialize themselves.

Overrides:

initialize in class QueryProcessorFilter