org.apache.lucene.search

Class QueryTraverser

Object

QueryTraverser

Direct Known Subclasses:

XtfQueryTraverser

public abstract class QueryTraverser
extends Object

Utility class for performing external traversal tasks on Lucene queries. The base class simply provides a framework. Derived classes should override methods for those parts of a query they need to process, rewrite, and the base will take care of calling them properly.

Constructor Summary

Constructors

Constructor and Description
QueryTraverser()

Method Summary

Modifier and Type	Method and Description
protected void	traverse(BooleanQuery bq) Traverse a BooleanQuery.
protected void	traverse(SpanChunkedNotQuery nq) Traverse a span-based chunked NOT query.
protected void	traverse(SpanDechunkingQuery nq) Traverse a span dechunking query.
protected void	traverse(SpanNearQuery nq) Traverse a span NEAR query.
protected void	traverse(SpanNotNearQuery nq) Traverse a span-based NOT NEAR query.
protected void	traverse(SpanNotQuery nq) Traverse a span-based NOT query.
protected void	traverse(SpanOrNearQuery nq) Traverse a span OR-NEAR query.
protected void	traverse(SpanOrQuery oq) Traverse a span-based OR query.
protected void	traverse(SpanRangeQuery q) Traverse a span range query.
protected void	traverse(SpanTermQuery q) Traverse a span term query.
protected void	traverse(SpanWildcardQuery q) Traverse a span wildcard query.
protected void	traverse(TermQuery q) Traverse a term query.
void	traverseQuery(Query q) Traverse a query of any supported type.

Methods inherited from class Object

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

Constructor Detail

QueryTraverser

public QueryTraverser()

Method Detail

traverseQuery

public void traverseQuery(Query q)

Traverse a query of any supported type.

Parameters:

q - Query to traverse

traverse

protected void traverse(BooleanQuery bq)

Traverse a BooleanQuery.

Parameters:

bq - The query to traverse

traverse

protected void traverse(SpanNearQuery nq)

Traverse a span NEAR query.

Parameters:

nq - The query to traverse

traverse

protected void traverse(SpanOrNearQuery nq)

Traverse a span OR-NEAR query.

Parameters:

nq - The query to traverse

traverse

protected void traverse(SpanOrQuery oq)

Traverse a span-based OR query.

Parameters:

oq - The query to traverse

traverse

protected void traverse(SpanChunkedNotQuery nq)

Traverse a span-based chunked NOT query.

Parameters:

nq - The query to traverse

traverse

protected void traverse(SpanNotQuery nq)

Traverse a span-based NOT query.

Parameters:

nq - The query to traverse

traverse

protected void traverse(SpanNotNearQuery nq)

Traverse a span-based NOT NEAR query.

Parameters:

nq - The query to traverse

traverse

protected void traverse(SpanDechunkingQuery nq)

Traverse a span dechunking query.

Parameters:

nq - The query to traverse

traverse

protected void traverse(TermQuery q)

Traverse a term query. The base class does nothing.

Parameters:

q - The query to traverse

traverse

protected void traverse(SpanTermQuery q)

Traverse a span term query.

Parameters:

q - The query to traverse

traverse

protected void traverse(SpanWildcardQuery q)

Traverse a span wildcard query. The base class does nothing.

Parameters:

q - The query to traverse

traverse

protected void traverse(SpanRangeQuery q)

Traverse a span range query. The base class does nothing.

Parameters:

q - The query to traverse