Package dev.cel.runtime

Class DescriptorMessageProvider

java.lang.Object

dev.cel.runtime.DescriptorMessageProvider

All Implemented Interfaces:

MessageProvider, RuntimeTypeProvider

@Immutable
@Internal
public final class DescriptorMessageProvider
extends java.lang.Object
implements RuntimeTypeProvider

An implementation of RuntimeTypeProvider which relies on proto descriptors.

This can handle all messages providable by the given MessageFactory. In addition, one can provide message descriptors for messages external to the program which are provided via a DynamicMessageFactory.

CEL Library Internals. Do Not Use.

Constructor Summary

Constructors

Constructor	Description
DescriptorMessageProvider(ProtoMessageFactory protoMessageFactory, dev.cel.common.CelOptions celOptions)	Create a new message provider with a given message factory and custom descriptor set to use when adapting from proto to CEL and vice versa.
DescriptorMessageProvider(MessageFactory messageFactory)	Deprecated. Migrate to the CEL-Java fluent APIs.

Method Summary

Modifier and Type	Method	Description
java.lang.Object	adapt(java.lang.String messageName, java.lang.Object message)	Adapt object to its message value.
@Nullable java.lang.Object	createMessage(java.lang.String messageName, java.util.Map<java.lang.String,java.lang.Object> values)	Create a message based on the fully qualified message name and field-value mapping.
java.lang.Object	hasField(java.lang.Object message, java.lang.String fieldName)	Check whether a field is set on message.
@Nullable java.lang.Object	selectField(java.lang.Object message, java.lang.String fieldName)	Select field from message.

Methods inherited from class java.lang.Object

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

Constructor Detail

DescriptorMessageProvider

@Deprecated
public DescriptorMessageProvider(MessageFactory messageFactory)

Deprecated.

Migrate to the CEL-Java fluent APIs. See CelRuntimeFactory.

Creates a new message provider with the given message factory.

DescriptorMessageProvider

public DescriptorMessageProvider(ProtoMessageFactory protoMessageFactory,
                                 dev.cel.common.CelOptions celOptions)

Create a new message provider with a given message factory and custom descriptor set to use when adapting from proto to CEL and vice versa.

Method Detail

createMessage

public @Nullable java.lang.Object createMessage(java.lang.String messageName,
                                                java.util.Map<java.lang.String,java.lang.Object> values)

Description copied from interface: MessageProvider

Create a message based on the fully qualified message name and field-value mapping.

Specified by:

createMessage in interface MessageProvider

selectField

public @Nullable java.lang.Object selectField(java.lang.Object message,
                                              java.lang.String fieldName)

Description copied from interface: MessageProvider

Select field from message.

Specified by:

selectField in interface MessageProvider

adapt

public java.lang.Object adapt(java.lang.String messageName,
                              java.lang.Object message)

Adapt object to its message value.

Specified by:

adapt in interface MessageProvider

hasField

public java.lang.Object hasField(java.lang.Object message,
                                 java.lang.String fieldName)

Description copied from interface: MessageProvider

Check whether a field is set on message.

Specified by:

hasField in interface MessageProvider