Query.Reader

java.lang.Object

com.inductiveautomation.historian.gateway.types.widedb.Query.Reader

Direct Known Subclasses:: Query.NonStreamingReader, Query.StreamingReader

Enclosing class:: Query

protected abstract class Query.Reader extends Object

Constructor Summary

Constructors

Modifier

Constructor

Description

protected

Reader()
Method Summary

Modifier and Type

Method

Description

protected void

close()

protected abstract List<IndexedQualifiedValue>

getAllValues()

protected abstract List<AbstractHistoryQueryExecutor.ColumnDataType>

getColumnTypes()

protected abstract IndexedQualifiedValue

readNext()

protected void

start()

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- Reader
  
  protected Reader()
Method Details
- getColumnTypes
  
  protected abstract List<AbstractHistoryQueryExecutor.ColumnDataType> getColumnTypes()
- start
  
  protected void start() throws Exception
  
  Throws:
  
  Exception
- close
  
  protected void close()
- getAllValues
  
  protected abstract List<IndexedQualifiedValue> getAllValues() throws Exception
  
  Throws:
  
  Exception
- readNext
  
  protected abstract IndexedQualifiedValue readNext() throws Exception
  
  Throws:
  
  Exception