Package io.deephaven.engine.table.impl.select.analyzers

Class SelectAndViewAnalyzer.AnalyzerContext

java.lang.Object

io.deephaven.engine.table.impl.select.analyzers.SelectAndViewAnalyzer.AnalyzerContext

Enclosing class:

SelectAndViewAnalyzer

public static final class SelectAndViewAnalyzer.AnalyzerContext
extends Object

Method Summary

Modifier and Type	Method	Description
QueryTable	applyShiftsAndRemainingColumns(@NotNull QueryTable parentTable, @NotNull QueryTable resultSoFar, SelectAndViewAnalyzer.UpdateFlavor updateFlavor)	Shift columns introduce intermediary table operations.
Map<String,String[]>	calcEffects()	Our job here is to calculate the effects: a map from incoming column to a list of columns that it effects.
SelectAndViewAnalyzer	createAnalyzer()
List<SelectColumn>	getProcessedColumns()
Map<String,ColumnSource<?>>	getPublishedColumnSources()
boolean	isFlatResult()

Methods inherited from class java.lang.Object

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

Method Details

getPublishedColumnSources

public Map<String,ColumnSource<?>> getPublishedColumnSources()

Returns:

the column sources that are published through the child table

createAnalyzer

public SelectAndViewAnalyzer createAnalyzer()

Returns:

the final analyzer

getProcessedColumns

public List<SelectColumn> getProcessedColumns()

Returns:

which select columns were included in the result (not including the shift, or post-shift, columns)

isFlatResult

public boolean isFlatResult()

Returns:

whether the result should be flat

calcEffects

public Map<String,String[]> calcEffects()

Our job here is to calculate the effects: a map from incoming column to a list of columns that it effects. We do this in two stages. In the first stage we create a map from column to (set of dependent columns). In the second stage we reverse that map.

Returns:

the effects map

applyShiftsAndRemainingColumns

public QueryTable applyShiftsAndRemainingColumns(@NotNull
 @NotNull QueryTable parentTable,
 @NotNull
 @NotNull QueryTable resultSoFar,
 SelectAndViewAnalyzer.UpdateFlavor updateFlavor)

Shift columns introduce intermediary table operations. This method applies remaining work to the result built so far.

Parameters:

parentTable - the source table

resultSoFar - the intermediate result

updateFlavor - the update flavor

Returns:

the final result