org.ceryle.wiki.plugin.query
Class QueryItem

java.lang.Object
  org.ceryle.wiki.plugin.query.QueryItem

public class QueryItem
extends Object

Javadoc: TODO.

Author:

John Volkar (john.volkar at gmail.com)

Field Summary

static QueryItem

NULL

Constructor Summary

QueryItem(Expression e)
Added so AndOperator and AnyOperator could construct sub-queries...

QueryItem(String queryString)
Constructor, attempts to parse the queryString, if unparseable throws a RuntimeException.

Method Summary

protected Set	evaluateExpression(ReferenceInfoProvider refProvider, Collection pageSet)
String	getExpressionString()
String	getQueryString()
Set	getResults(ReferenceInfoProvider refProvider) Returns the results of the query as a Set.

Methods inherited from class java.lang.Object

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

Field Detail

NULL

public static final QueryItem NULL

Constructor Detail

QueryItem

public QueryItem(String queryString)
          throws QueryException

Constructor, attempts to parse the queryString, if unparseable throws a RuntimeException.

Parameters:

queryString -

Throws:

QueryException

QueryItem

public QueryItem(Expression e)

Added so AndOperator and AnyOperator could construct sub-queries...

Parameters:

e -

Method Detail

getQueryString

public String getQueryString()

getExpressionString

public String getExpressionString()

getResults

public Set getResults(ReferenceInfoProvider refProvider)
               throws QueryException

Returns the results of the query as a Set.

Parameters:

refProvider - the ReferenceInfoProvider

Returns:

the query results as a Set

Throws:

QueryException

evaluateExpression

protected Set evaluateExpression(ReferenceInfoProvider refProvider,
                                 Collection pageSet)
                          throws QueryException

Parameters:

pageSet - Set of all pages to be evaluated.

Returns:

Non null list.

Throws:

QueryException