io.debezium.transforms.scripting

Class GraalJsEngine

java.lang.Object

io.debezium.transforms.scripting.Jsr223Engine

io.debezium.transforms.scripting.GraalJsEngine

All Implemented Interfaces:

Engine

public class GraalJsEngine
extends Jsr223Engine

An implementation of the expression language evaluator based on GraalVM. Key and value structs are exposed as ProxyObjects, allowing for simplified property references.

Author:

Jiri Pechanec

See Also:

https://www.graalvm.org/sdk/javadoc/org/graalvm/polyglot/proxy/ProxyObject.html

Field Summary

Fields inherited from class io.debezium.transforms.scripting.Jsr223Engine

engine

Constructor Summary

Constructors

Constructor and Description
GraalJsEngine()

Method Summary

Modifier and Type	Method and Description
private org.graalvm.polyglot.proxy.ProxyObject	asProxyObject(Map<String,?> map) Exposes the given Map as a ProxyObject, allowing for simplified property reference.
private org.graalvm.polyglot.proxy.ProxyObject	asProxyObject(org.apache.kafka.connect.data.Struct struct) Exposes the given struct as a ProxyObject, allowing for simplified property references, also providing any write access.
protected void	configureEngine()
protected RecordHeader	header(org.apache.kafka.connect.header.Header header)
protected Object	headers(org.apache.kafka.connect.connector.ConnectRecord<?> record)
protected Object	key(org.apache.kafka.connect.connector.ConnectRecord<?> record)
protected Object	value(org.apache.kafka.connect.connector.ConnectRecord<?> record)

Methods inherited from class io.debezium.transforms.scripting.Jsr223Engine

configure, doHeaders, eval, getBindings

Methods inherited from class java.lang.Object

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

Constructor Detail

GraalJsEngine

public GraalJsEngine()

Method Detail

configureEngine

protected void configureEngine()

Overrides:

configureEngine in class Jsr223Engine

key

protected Object key(org.apache.kafka.connect.connector.ConnectRecord<?> record)

Overrides:

key in class Jsr223Engine

value

protected Object value(org.apache.kafka.connect.connector.ConnectRecord<?> record)

Overrides:

value in class Jsr223Engine

headers

protected Object headers(org.apache.kafka.connect.connector.ConnectRecord<?> record)

Overrides:

headers in class Jsr223Engine

header

protected RecordHeader header(org.apache.kafka.connect.header.Header header)

Overrides:

header in class Jsr223Engine

asProxyObject

private org.graalvm.polyglot.proxy.ProxyObject asProxyObject(org.apache.kafka.connect.data.Struct struct)

Exposes the given struct as a ProxyObject, allowing for simplified property references, also providing any write access.

asProxyObject

private org.graalvm.polyglot.proxy.ProxyObject asProxyObject(Map<String,?> map)

Exposes the given Map as a ProxyObject, allowing for simplified property reference.