org.eclipse.scada.hd.server.ngp

Class QueryHandler

java.lang.Object

org.eclipse.scada.hd.server.ngp.QueryHandler

All Implemented Interfaces:

QueryListener

public class QueryHandler
extends Object
implements QueryListener

Constructor Summary

Constructors

Constructor and Description
QueryHandler(long id, ServerConnectionImpl connectionHandler)

Method Summary

Methods

Modifier and Type	Method and Description
void	changeParameters(QueryParameters parameters)
void	close()
void	setQuery(Query query)
void	updateData(int index, Map<String,List<Double>> values, List<ValueInformation> valueInformation) Reports data update
void	updateParameters(QueryParameters parameters, Set<String> valueTypes) Reports a change in parameters
void	updateState(QueryState state) Updates the state of the query

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryHandler

public QueryHandler(long id,
            ServerConnectionImpl connectionHandler)

Method Detail

updateData

public void updateData(int index,
              Map<String,List<Double>> values,
              List<ValueInformation> valueInformation)

Description copied from interface: QueryListener

Reports data update

All arrays must have the same size.

Specified by:

updateData in interface QueryListener

Parameters:

index - index from which the data update starts, must be greater or equal to zero and lower than the reported number of entries

values - the values that are updates, must not be null

valueInformation - the value information for the provided values. must not be null

updateParameters

public void updateParameters(QueryParameters parameters,
                    Set<String> valueTypes)

Description copied from interface: QueryListener

Reports a change in parameters

Specified by:

updateParameters in interface QueryListener

Parameters:

parameters - the new parameters, must not be null

valueTypes - the new value types to expect, must not be null or empty

updateState

public void updateState(QueryState state)

Description copied from interface: QueryListener

Updates the state of the query

Specified by:

updateState in interface QueryListener

Parameters:

state - the new state

setQuery

public void setQuery(Query query)

close

public void close()

changeParameters

public void changeParameters(QueryParameters parameters)