QueryProcessorGateway

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com.raritantechnologies.verity.collection
Class QueryProcessorGateway

java.lang.Object
  com.raritantechnologies.verity.collection.QueryProcessorGateway

All Implemented Interfaces:: ICollectionGateway, java.lang.Runnable

public class QueryProcessorGateway
extends java.lang.Object
implements ICollectionGateway

ICollectionGateway implementation which uses an IQueryProcessor to generate results for indexing or other processing.

Uses a set of IQueryList objects to generate queries for the query processor.

The IResultSets returned from the IQueryProcessor are post-processed using an XMLResultProcessor to map the metadata to the schema required by indexers or other IGatewayOutputProcessors in the data collection / processing pipeline.

XML Configuration Template:

  <CollectionGateway name="QProc_1" 
          class="com.raritantechnologies.verity.collection.QueryProcessorGateway"
          pageSize="[ size of result sets to be processed ]"
          maxDocs="[ maximum number of results to be processed ]" >

    <QueryList>
      <Query> 
        <Field ID="[a search field]" value="[value to search]" />
        <Field ID="[another field]" value="[value to search]" />
      </Query>
      <Query>
        <Field ID="[second query first field]" value="[ some value ]" />
      </Query>
    </QueryList>

    <!-- Alternatively - can derive the query list from another SearchSource -->
    <QuerySource name="[ name of RTI SearchSource ]"
                    outputQueryFields="[ name of field(s) in query source result that have query=value parameters]" >

       <!-- Describes how to create a query to the QuerySource    -->
       <!-- to get the list of queries for the result Data source -->
       <QueryList>
          <Field ID="[ search field in QuerySource ]" value="[ value to search ]" >
          <!-- etc... -->
       </QueryList>
      
    </QuerySource>

    <!-- The Result data sources from which information will be extracted. -->
    <Sources>
      <Source name="[Search Source name]" >

        <!-- Example (Optional) XMLResultProcessor used to transform raw search result --> 
        <XMLResultProcessor>
          <RecordTag>Record</RecordTag>

          <!-- Define callback operations for the ProgrammableSAXFilter -->
          <!-- "shortcut versions -assume standard classes in com.raritantechnologies.xml.sax -->
          <Field ID="VdkVgwKey" callbackType="CData" >
            <ParamName>VdkVgwKey</ParamName> 
              <Comparator class="TagComparator" >
                <TagName>CIK</TagName>
              </Comparator>
          </Field>

          <Field ID="Name" callbackType="Attribute" >
            <ParamName>Name</ParamName> 
            <AttributeName>attrInXML</AttributeName>
            <Comparator class="TagComparator" >
                <TagName>Name</TagName>
            </Comparator>
          </Field>

          <!-- Fully qualified class names versions - use if custom callbacks are used (for example) -->
          <Field ID="CIK" callback="com.raritantechnologies.xml.sax.filter.callbacks.CDataCallbackOperation" >
            <ParamName>CIK</ParamName> 
              <Comparator class="com.raritantechnologies.xml.sax.filter.comparators.TagComparator" >
                <TagName>CIK</TagName>
              </Comparator>
          </Field>

          <Field ID="SIC" callback="com.raritantechnologies.xml.sax.filter.callbacks.AttributeCallbackOperation" >
            <AttributeName>StandardCode</AttributeName>
            <ParamName>SIC</ParamName> 
            <Comparator class="com.raritantechnologies.xml.sax.filter.comparators.TagComparator" >
              <TagName>SIC</TagName>
            </Comparator>
          </Field>

        </XMLResultProcessor>
      </Source>
    </Sources>
  </CollectionGateway>

Developed by Raritan Technologies .

Author:: Ted Sullivan

Constructor Summary
`QueryProcessorGateway()`
`QueryProcessorGateway(ISearchFieldMap sfMap, java.lang.String ssName, IQueryList queryList)`

Method Summary
`java.lang.String`	`getConfigurationXML()`
`void`	`initialize(org.w3c.dom.Element gatewayElem, ISearchFieldMap sfMap)` Initialize the ICollectionGateway from a Configuration XML element.
`boolean`	`isPaused()`
`void`	`pause()`
`void`	`resume()`
`void`	`run()`
`void`	`run(ILoginInfo userInfo)` Need to have loginInfo for sources which require login/pw access.
`void`	`setDataAvailable(IResultSet rs, int currentQuery)`
`void`	`setDataComplete()`
`void`	`setGatewayListener(IGatewayListener listener)` Sets the IGatewayListener interface.
`void`	`setInputParameters(OrderedMap inputParams)` set input parameters...

Methods inherited from class java.lang.Object

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

Constructor Detail