Package com.inductiveautomation.historian.gateway.query.writing

Class TallHistoryWriter

java.lang.Object

com.inductiveautomation.historian.gateway.query.writing.HistoryWriter

com.inductiveautomation.historian.gateway.query.writing.TallHistoryWriter

All Implemented Interfaces:

QueryController

public class TallHistoryWriter
extends HistoryWriter

Nested Class Summary

Nested classes/interfaces inherited from class com.inductiveautomation.historian.gateway.query.writing.HistoryWriter

HistoryWriter.BlockIdGenerator, HistoryWriter.LegacyBlockIdGenerator, HistoryWriter.ListHead, HistoryWriter.ModernBlockIdGenerator

Field Summary

Fields inherited from class com.inductiveautomation.historian.gateway.query.writing.HistoryWriter

colList, columns, log, rowData, rowQuality, scSet

Constructor Summary

Constructors

Constructor	Description
TallHistoryWriter(String queryId, StreamingDatasetWriter writer, TagHistoryQueryParams params)

Method Summary

Modifier and Type	Method	Description
protected void	commitRows()
protected void	initColumns()	Creates the arrays rowData and rowQuality, which will get filled in, and then written from.
protected void	initializeWriter()

Methods inherited from class com.inductiveautomation.historian.gateway.query.writing.HistoryWriter

advanceBlockEnd, calculateBlockSize, calculateMaxRowLimit, execute, finalizeWriter, getBlockId, getBlockSize, getColumns, getLogger, getQueryEnd, getQueryId, getQueryParameters, getQueryStart, getRowCount, incrementRowCount, initLoader, insertInList, isRawQuery, markCompletedTo, registerColumn, setQueryExecutor, setWriter

Methods inherited from class java.lang.Object

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

Constructor Details

TallHistoryWriter

public TallHistoryWriter(String queryId,
 StreamingDatasetWriter writer,
 TagHistoryQueryParams params)

Method Details

initColumns

protected void initColumns()

Description copied from class: HistoryWriter

Creates the arrays rowData and rowQuality, which will get filled in, and then written from. If a HistoryWriter subclass returns a set of columns that are different than the natural set, this function should be overridden.

Overrides:

initColumns in class HistoryWriter

initializeWriter

protected void initializeWriter()

Overrides:

initializeWriter in class HistoryWriter

commitRows

protected void commitRows()
                   throws Exception

Overrides:

commitRows in class HistoryWriter

Throws:

Exception