slib.utils.impl

Interface QueryIterator

All Known Implementing Classes:

QueryConceptsIterator, QueryFileIterator

public interface QueryIterator

Interface defining the generic behavior a Query iterator must follows. The Query iterator thus enables to iterate through the full set of queries contained in a particular repository (in file, in memory collection).

Author:

Sébastien Harispe

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Close the opened repository
long	getNumberQueries()
boolean	hasNext()
QueryEntry	next()
List<QueryEntry>	nextValids(int nbValues) Return a List containing the next valid queries.

Method Detail

next

QueryEntry next()

Returns:

the next available QueryEntry. Also return null if the row repository do not correspond to a well formed entry.

nextValids

List<QueryEntry> nextValids(int nbValues)
                            throws Exception

Return a List containing the next valid queries. If the number of the next queries is lower than the requested. number of queries only the available number of queries is returned.

Parameters:

nbValues - the number of values the query list must contains.

Returns:

a List of QueryEntry

Throws:

Exception - if query access can throw an exception.

hasNext

boolean hasNext()

Returns:

boolean return true if a query is available else either

getNumberQueries

long getNumberQueries()
                      throws Exception

Returns:

a long corresponding to the number of query available in the number of queries available. This results may not be accurate (when queries are loaded from a file, this number corresponds to the number of lines).

Throws:

Exception

close

void close()
           throws Exception

Close the opened repository

Throws:

Exception