org.eclipse.scada.hd.server.storage.common

Class QueryDataBuffer

java.lang.Object

org.eclipse.scada.hd.server.storage.common.QueryDataBuffer

Direct Known Subclasses:

ProxyQueryBuffer, QueryBuffer

public abstract class QueryDataBuffer
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	QueryDataBuffer.Data

Field Summary

Fields

Modifier and Type	Field and Description
static String	AVG
static String	MAX
static String	MIN
protected QueryState	state
static String	STDDEV

Constructor Summary

Constructors

Constructor and Description
QueryDataBuffer(QueryListener listener, Executor executor, Date fixedStartDate, Date fixedEndDate) Create a new query data buffer

Method Summary

Modifier and Type	Method and Description
protected static void	fillDataCells(QueryDataBuffer.Data[] data, Calendar start, Calendar end, DataFactory dataFactory)
protected static void	fillDataCells(QueryDataBuffer.Data[] data, long start, long end, DataFactory dataFactory) This fills the data cell buffer with start and end timestamp for each entry
protected abstract QueryDataBuffer.Data[]	getData()
protected void	notifyData(int startIndex, int endIndex)
protected void	notifyData(int index, Map<String,List<Double>> values, List<ValueInformation> valueInformation)
protected void	notifyParameterUpdate(QueryParameters parameters, Set<String> valueTypes)
protected void	notifyStateUpdate(QueryState state)

Methods inherited from class java.lang.Object

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

Field Detail

STDDEV

public static final String STDDEV

See Also:

Constant Field Values

MAX

public static final String MAX

See Also:

Constant Field Values

MIN

public static final String MIN

See Also:

Constant Field Values

AVG

public static final String AVG

See Also:

Constant Field Values

state

protected QueryState state

Constructor Detail

QueryDataBuffer

public QueryDataBuffer(QueryListener listener,
                       Executor executor,
                       Date fixedStartDate,
                       Date fixedEndDate)

Create a new query data buffer

Parameters:

listener - the listener that will receive update events

executor - the executor that will be used to send update events

fixedStartDate -

fixedEndDate -

Method Detail

getData

protected abstract QueryDataBuffer.Data[] getData()

fillDataCells

protected static void fillDataCells(QueryDataBuffer.Data[] data,
                                    Calendar start,
                                    Calendar end,
                                    DataFactory dataFactory)

fillDataCells

protected static void fillDataCells(QueryDataBuffer.Data[] data,
                                    long start,
                                    long end,
                                    DataFactory dataFactory)

This fills the data cell buffer with start and end timestamp for each entry

Parameters:

data -

start -

end -

dataFactory -

notifyParameterUpdate

protected void notifyParameterUpdate(QueryParameters parameters,
                                     Set<String> valueTypes)

notifyData

protected void notifyData(int index,
                          Map<String,List<Double>> values,
                          List<ValueInformation> valueInformation)

notifyStateUpdate

protected void notifyStateUpdate(QueryState state)

notifyData

protected void notifyData(int startIndex,
                          int endIndex)