io.cloudevents.core

Class CloudEventUtils

java.lang.Object

io.cloudevents.core.CloudEventUtils

public final class CloudEventUtils
extends Object

This class contains a set of utility methods to deal with conversions of io.cloudevents related interfaces

Method Summary

Modifier and Type	Method and Description
static <R extends io.cloudevents.CloudEventData> R	mapData(io.cloudevents.CloudEvent event, io.cloudevents.rw.CloudEventDataMapper<R> mapper) Get the data contained in event and map it using the provided mapper.
static io.cloudevents.rw.CloudEventContextReader	toContextReader(io.cloudevents.CloudEventContext event) Convert a CloudEvent to a CloudEventContextReader.
static io.cloudevents.CloudEvent	toEvent(io.cloudevents.rw.CloudEventReader reader) Convert a CloudEventReader to a CloudEvent.
static io.cloudevents.CloudEvent	toEvent(io.cloudevents.rw.CloudEventReader reader, io.cloudevents.rw.CloudEventDataMapper<?> mapper) Convert a CloudEventReader to a CloudEvent mapping the data with the provided mapper.
static io.cloudevents.rw.CloudEventReader	toReader(io.cloudevents.CloudEvent event) Convert a CloudEvent to a CloudEventReader.

Methods inherited from class java.lang.Object

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

Method Detail

toReader

public static io.cloudevents.rw.CloudEventReader toReader(io.cloudevents.CloudEvent event)

Convert a CloudEvent to a CloudEventReader. This method provides a default implementation for CloudEvent that doesn't implement CloudEventReader.

It's safe to use the returned CloudEventReader multiple times.

Parameters:

event - the event to convert

Returns:

the reader implementation

toContextReader

public static io.cloudevents.rw.CloudEventContextReader toContextReader(io.cloudevents.CloudEventContext event)

Convert a CloudEvent to a CloudEventContextReader. This method provides a default implementation for CloudEvent that doesn't implement CloudEventContextReader.

It's safe to use the returned CloudEventReader multiple times.

Parameters:

event - the event to convert

Returns:

the context reader implementation

toEvent

public static io.cloudevents.CloudEvent toEvent(io.cloudevents.rw.CloudEventReader reader)
                                         throws io.cloudevents.rw.CloudEventRWException

Convert a CloudEventReader to a CloudEvent.

Parameters:

reader - the reader where to read the message from

Returns:

the reader implementation

Throws:

io.cloudevents.rw.CloudEventRWException

toEvent

public static io.cloudevents.CloudEvent toEvent(io.cloudevents.rw.CloudEventReader reader,
                                                io.cloudevents.rw.CloudEventDataMapper<?> mapper)
                                         throws io.cloudevents.rw.CloudEventRWException

Convert a CloudEventReader to a CloudEvent mapping the data with the provided mapper.

Parameters:

reader - the reader where to read the message from

mapper - the mapper to use when reading the data

Returns:

the reader implementation

Throws:

io.cloudevents.rw.CloudEventRWException

mapData

@Nullable
public static <R extends io.cloudevents.CloudEventData> R mapData(io.cloudevents.CloudEvent event,
                                                                            io.cloudevents.rw.CloudEventDataMapper<R> mapper)

Get the data contained in event and map it using the provided mapper.

Type Parameters:

R - the returned CloudEventData implementation from the provided mapper

Parameters:

event - the event eventually containing the data

mapper - the mapper to use to map the data

Returns:

the data contained in event and mapped with mapper, if any, otherwise null