com.esri.gpt.catalog.lucene
Class LuceneQueryAdapter

java.lang.Object
  com.esri.gpt.catalog.discovery.DiscoveryQueryAdapter
      com.esri.gpt.catalog.lucene.LuceneQueryAdapter

public class LuceneQueryAdapter
extends DiscoveryQueryAdapter

Adapts a catalog discovery query to the Lucene model.

Constructor Summary

LuceneQueryAdapter()
Default constructor.

Method Summary

void	execute(RequestContext context, DiscoveryQuery discoveryQuery) Executes a query for metadata documents.
protected void	executeQuery(DiscoveryQuery discoveryQuery) Executes a query against a Lucene index.
protected boolean	getHasScoredExpression() Gets the flag indicating whether or not a scored expression exists within the query.
protected LuceneIndexAdapter	getIndexAdapter() Gets the index adapter.
protected int	getMaxDoc() Gets the maxDoc() count returned by the Lucene IndexSearcher.
protected void	setHasScoredExpression(boolean hasScoredExpression) Sets the flag indicating whether or not a scored expression exists within the query.

Methods inherited from class java.lang.Object

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

Constructor Detail

LuceneQueryAdapter

public LuceneQueryAdapter()

Default constructor.

Method Detail

getHasScoredExpression

protected boolean getHasScoredExpression()

Gets the flag indicating whether or not a scored expression exists within the query.

This flag supports relevance sorting.

Returns:

true if a scored expression exists

setHasScoredExpression

protected void setHasScoredExpression(boolean hasScoredExpression)

Sets the flag indicating whether or not a scored expression exists within the query.

This flag supports relevance sorting.

Parameters:

hasScoredExpression - true if a scored expression exists

getIndexAdapter

protected LuceneIndexAdapter getIndexAdapter()

Gets the index adapter.

Returns:

the index adapter

getMaxDoc

protected int getMaxDoc()

Gets the maxDoc() count returned by the Lucene IndexSearcher.

Returns:

the index adapter

execute

public void execute(RequestContext context,
                    DiscoveryQuery discoveryQuery)
             throws DiscoveryException

Executes a query for metadata documents.

Specified by:

execute in class DiscoveryQueryAdapter

Parameters:

context - the active request context

discoveryQuery - the query to execute

Throws:

DiscoveryException - if an exception occurs

executeQuery

protected void executeQuery(DiscoveryQuery discoveryQuery)
                     throws DiscoveryException,
                            ParseException,
                            CorruptIndexException,
                            IOException

Executes a query against a Lucene index.

Parameters:

discoveryQuery - the query to execute

Throws:

DiscoveryException

ParseException

CorruptIndexException

IOException