org.nuxeo.elasticsearch.seqgen

Class ESSequenceGeneratorComponent

java.lang.Object

org.nuxeo.runtime.model.DefaultComponent

org.nuxeo.elasticsearch.seqgen.ESSequenceGeneratorComponent

All Implemented Interfaces:

SequenceGenerator, Adaptable, Component, Extensible, TimestampedService

public class ESSequenceGeneratorComponent
extends DefaultComponent
implements SequenceGenerator

Implements the SequenceGenerator service on top of Elasticsearch. Since elasticsearch does not seem to support a notion of native sequence, the implementation uses the auto-increment of the version attribute as described in http://blogs.perl.org/users/clinton_gormley/2011/10/elasticsearchsequence-- -a-blazing-fast-ticket-server.html

Author:

tiry

Field Summary

Fields

Modifier and Type	Field and Description
static String	IDX_NAME
static String	IDX_TYPE

Constructor Summary

Constructors

Constructor and Description
ESSequenceGeneratorComponent()

Method Summary

Methods

Modifier and Type	Method and Description
void	deactivate(ComponentContext context) Deactivates the component.
long	getNextId(String sequenceName) For the given sequence name, increment it and return the value

Methods inherited from class org.nuxeo.runtime.model.DefaultComponent

activate, applicationStarted, getAdapter, getApplicationStartedOrder, getLastModified, registerContribution, registerExtension, setLastModified, unregisterContribution, unregisterExtension

Methods inherited from class java.lang.Object

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

Field Detail

IDX_NAME

public static final String IDX_NAME

See Also:

Constant Field Values

IDX_TYPE

public static final String IDX_TYPE

See Also:

Constant Field Values

Constructor Detail

ESSequenceGeneratorComponent

public ESSequenceGeneratorComponent()

Method Detail

getNextId

public long getNextId(String sequenceName)

Description copied from interface: SequenceGenerator

For the given sequence name, increment it and return the value

Specified by:

getNextId in interface SequenceGenerator

Parameters:

sequenceName - the name of the sequence

Returns:

the new value of the sequence after increment

deactivate

public void deactivate(ComponentContext context)

Description copied from interface: Component

Deactivates the component.

This method is called by the runtime when a component is deactivated.

Specified by:

deactivate in interface Component

Overrides:

deactivate in class DefaultComponent

Parameters:

context - the runtime context