Package org.aksw.iguana.cc.query.handler

Class QueryHandler

java.lang.Object

org.aksw.iguana.cc.query.handler.QueryHandler

public class QueryHandler
extends Object

The QueryHandler is used by every worker that extends the AbstractWorker. It initializes the QuerySource, QuerySelector, QueryList and, if needed, TemplateHandler. After the initialization, it provides the next query to the worker using the generated QuerySource and the order given by the QuerySelector.

Author:

frensing

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	QueryHandler.Config
static final record	QueryHandler.QueryStreamWrapper
static final record	QueryHandler.QueryStringWrapper

Field Summary

Fields

Modifier and Type	Field	Description
protected final QueryHandler.Config	config
protected final int	hashCode
protected static final org.slf4j.Logger	LOGGER
protected final QueryList	queryList

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	QueryHandler()	Empty Constructor for Testing purposes.
	QueryHandler(QueryHandler.Config config)

Method Summary

Modifier and Type	Method	Description
String[]	getAllQueryIds()	Returns every query id in the format: queryListHash:index The index of a query inside the returned array is the same as the index inside the string.
QueryHandler.Config	getConfig()	Returns the configuration of the QueryHandler.
QueryHandler.QueryStringWrapper	getNextQuery(QuerySelector querySelector)
QueryHandler.QueryStreamWrapper	getNextQueryStream(QuerySelector querySelector)
int	getQueryCount()
String	getQueryId(int i)
QuerySelector	getQuerySelectorInstance()
int	hashCode()

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

protected static final org.slf4j.Logger LOGGER

config

protected final QueryHandler.Config config

queryList

protected final QueryList queryList

hashCode

protected final int hashCode

Constructor Details

QueryHandler

protected QueryHandler()

Empty Constructor for Testing purposes. TODO: look for an alternative

QueryHandler

public QueryHandler(QueryHandler.Config config)
             throws IOException

Throws:

IOException

Method Details

getQuerySelectorInstance

public QuerySelector getQuerySelectorInstance()

getNextQuery

public QueryHandler.QueryStringWrapper getNextQuery(QuerySelector querySelector)
                                             throws IOException

Throws:

IOException

getNextQueryStream

public QueryHandler.QueryStreamWrapper getNextQueryStream(QuerySelector querySelector)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getQueryCount

public int getQueryCount()

getQueryId

public String getQueryId(int i)

getAllQueryIds

public String[] getAllQueryIds()

Returns every query id in the format: queryListHash:index
The index of a query inside the returned array is the same as the index inside the string.

Returns:

String[] of query ids

getConfig

public QueryHandler.Config getConfig()

Returns the configuration of the QueryHandler.

Returns:

the configuration of the QueryHandler