Package io.deephaven.engine.table.impl

Class SliceLikeOperation

java.lang.Object

io.deephaven.engine.table.impl.SliceLikeOperation

All Implemented Interfaces:

QueryTable.Operation<QueryTable>

public class SliceLikeOperation
extends Object
implements QueryTable.Operation<QueryTable>

Nested Class Summary

Nested classes/interfaces inherited from interface io.deephaven.engine.table.impl.QueryTable.Operation

QueryTable.Operation.Result<T extends DynamicNode & NotificationStepReceiver>

Method Summary

Modifier and Type	Method	Description
String	getDescription()
protected long	getFirstPositionInclusive()
protected long	getLastPositionExclusive()
String	getLogPrefix()
static SliceLikeOperation	headPct(QueryTable parent, double percent)
QueryTable.Operation.Result<QueryTable>	initialize(boolean usePrev, long beforeClock)	Initialize this operation.
static SliceLikeOperation	slice(QueryTable parent, long firstPositionInclusive, long lastPositionExclusive, String op)
static SliceLikeOperation	slicePct(QueryTable parent, double startPercentInclusive, double endPercentExclusive)
static SliceLikeOperation	tailPct(QueryTable parent, double percent)

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.deephaven.engine.table.impl.QueryTable.Operation

beginOperation, newSnapshotControl, snapshotNeeded

Method Details

slice

public static SliceLikeOperation slice(QueryTable parent,
 long firstPositionInclusive,
 long lastPositionExclusive,
 String op)

slicePct

public static SliceLikeOperation slicePct(QueryTable parent,
 double startPercentInclusive,
 double endPercentExclusive)

headPct

public static SliceLikeOperation headPct(QueryTable parent,
 double percent)

tailPct

public static SliceLikeOperation tailPct(QueryTable parent,
 double percent)

getDescription

public String getDescription()

Specified by:

getDescription in interface QueryTable.Operation<QueryTable>

Returns:

the description of this operation

getLogPrefix

public String getLogPrefix()

Specified by:

getLogPrefix in interface QueryTable.Operation<QueryTable>

Returns:

the log prefix of this operation

getFirstPositionInclusive

protected long getFirstPositionInclusive()

getLastPositionExclusive

protected long getLastPositionExclusive()

initialize

public QueryTable.Operation.Result<QueryTable> initialize(boolean usePrev,
 long beforeClock)

Description copied from interface: QueryTable.Operation

Initialize this operation.

Specified by:

initialize in interface QueryTable.Operation<QueryTable>

Parameters:

usePrev - data from the previous cycle should be used (otherwise use this cycle)

beforeClock - the clock value that we captured before the function began; the function can use this value to bail out early if it notices something has gone wrong.

Returns:

the result table / listener if successful, null if it should be retried.