org.galagosearch.core.retrieval
Class Retrieval

java.lang.Object
  org.galagosearch.core.retrieval.Retrieval

Direct Known Subclasses:

StructuredRetrieval

public abstract class Retrieval
extends java.lang.Object

This is a base class for all kinds of retrieval classes. Historically this was used to support binned indexes in addition to structured indexes.

Author:

trevor

Constructor Summary

Retrieval()

Method Summary

abstract void	close()
abstract java.lang.String	getDocumentName(int document)
static Retrieval	instance(java.lang.String indexPath)
abstract ScoredDocument[]	runQuery(Node query, int requested)
abstract Node	transformQuery(Node query) Transforms the query into a more complete representation that can be directly executed.

Methods inherited from class java.lang.Object

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

Constructor Detail

Retrieval

public Retrieval()

Method Detail

getDocumentName

public abstract java.lang.String getDocumentName(int document)
                                          throws java.io.IOException

Throws:

java.io.IOException

transformQuery

public abstract Node transformQuery(Node query)
                             throws java.lang.Exception

Transforms the query into a more complete representation that can be directly executed.

Throws:

java.lang.Exception

runQuery

public abstract ScoredDocument[] runQuery(Node query,
                                          int requested)
                                   throws java.lang.Exception

Throws:

java.lang.Exception

close

public abstract void close()
                    throws java.io.IOException

Throws:

java.io.IOException

instance

public static Retrieval instance(java.lang.String indexPath)
                          throws java.io.IOException

Throws:

java.io.IOException