Package org.apache.arrow.vector

Class SchemaChangeCallBack

java.lang.Object

org.apache.arrow.vector.SchemaChangeCallBack

All Implemented Interfaces:

CallBack

public class SchemaChangeCallBack
extends Object
implements CallBack

Callback for when the Schema for the Vector changes (generally happens when a vector is promoted to a union type from a single value type).

Constructor Summary

Constructors

Constructor	Description
SchemaChangeCallBack()	Constructs a schema-change callback with the schema-changed state set to false.

Method Summary

Modifier and Type	Method	Description
void	doWork()	Sets the schema-changed state to true.
boolean	getSchemaChangedAndReset()	Returns the value of schema-changed state, resetting the schema-changed state to false.

Methods inherited from class java.lang.Object

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

Constructor Details

SchemaChangeCallBack

public SchemaChangeCallBack()

Constructs a schema-change callback with the schema-changed state set to false.

Method Details

doWork

public void doWork()

Sets the schema-changed state to true.

Specified by:

doWork in interface CallBack

getSchemaChangedAndReset

public boolean getSchemaChangedAndReset()

Returns the value of schema-changed state, resetting the schema-changed state to false.

Returns:

the previous schema-changed state