Package com.illumon.iris.db.v2.updateby.spec

Class DeltaSpec

java.lang.Object

com.illumon.iris.db.v2.updateby.spec.DeltaSpec

All Implemented Interfaces:

UpdateBySpec

public class DeltaSpec
extends Object
implements UpdateBySpec

A UpdateBySpec for performing deltas (col[i] - col[i-1]) across the specified columns. Result columns maintain the same type as the original, with the exception of timestamps which represent the difference in nanoseconds.

Nested Class Summary

Nested classes/interfaces inherited from interface com.illumon.iris.db.v2.updateby.spec.UpdateBySpec

UpdateBySpec.Visitor

Method Summary

Modifier and Type	Method	Description
boolean	applicableTo(Class<?> inputType)	Determine if this spec can be applied to the specified type
String	describe()	Get a description of the operation requested.
DeltaControl	getControl()
static DeltaSpec	of(DeltaControl control)
<V extends UpdateBySpec.Visitor> V	walk(V v)

Methods inherited from class java.lang.Object

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

Method Details

of

public static DeltaSpec of(@NotNull
 DeltaControl control)

getControl

public DeltaControl getControl()

describe

@NotNull
public String describe()

Description copied from interface: UpdateBySpec

Get a description of the operation requested.

Specified by:

describe in interface UpdateBySpec

Returns:

a description of the operation

applicableTo

public boolean applicableTo(@NotNull
 Class<?> inputType)

Description copied from interface: UpdateBySpec

Determine if this spec can be applied to the specified type

Specified by:

applicableTo in interface UpdateBySpec

Returns:

true if this spec can be applied to the specified input type

walk

public <V extends UpdateBySpec.Visitor> V walk(@NotNull
 V v)

Specified by:

walk in interface UpdateBySpec