org.axonframework.common.annotation

Class MultiParameterResolverFactory

java.lang.Object

org.axonframework.common.annotation.MultiParameterResolverFactory

All Implemented Interfaces:

ParameterResolverFactory

public class MultiParameterResolverFactory
extends Object
implements ParameterResolverFactory

ParameterResolverFactory instance that delegates to multiple other instances, in the order provided.

Since:

2.1

Author:

Allard Buijze

Constructor Summary

Constructors

Constructor and Description
MultiParameterResolverFactory(List<ParameterResolverFactory> delegates) Initializes an instance that delegates to the given delegates, in the order provided.
MultiParameterResolverFactory(ParameterResolverFactory... delegates) Initializes an instance that delegates to the given delegates, in the order provided.

Method Summary

Methods

Modifier and Type	Method and Description
ParameterResolver	createInstance(Annotation[] memberAnnotations, Class<?> parameterType, Annotation[] parameterAnnotations) If available, creates a ParameterResolver instance that can provide a parameter of type parameterType for a given message.
List<ParameterResolverFactory>	getDelegates() Returns the delegates of this instance, in the order they are evaluated to resolve parameters.
static MultiParameterResolverFactory	ordered(List<ParameterResolverFactory> delegates) Creates a MultiParameterResolverFactory instance with the given delegates, which are automatically ordered based on the @Priority annotation on their respective classes.
static MultiParameterResolverFactory	ordered(ParameterResolverFactory... delegates) Creates a MultiParameterResolverFactory instance with the given delegates, which are automatically ordered based on the @Priority annotation on their respective classes.

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiParameterResolverFactory

public MultiParameterResolverFactory(ParameterResolverFactory... delegates)

Initializes an instance that delegates to the given delegates, in the order provided. Changes in the given array are not reflected in the created instance.

Parameters:

delegates - The factories providing the parameter values to use

MultiParameterResolverFactory

public MultiParameterResolverFactory(List<ParameterResolverFactory> delegates)

Initializes an instance that delegates to the given delegates, in the order provided. Changes in the given List are not reflected in the created instance.

Parameters:

delegates - The list of factories providing the parameter values to use

Method Detail

ordered

public static MultiParameterResolverFactory ordered(ParameterResolverFactory... delegates)

Creates a MultiParameterResolverFactory instance with the given delegates, which are automatically ordered based on the @Priority annotation on their respective classes. Classes with the same Priority are kept in the order as provided in the delegates.

If one of the delegates is a MultiParameterResolverFactory itself, that factory's delegates are 'mixed' with the given delegates, based on their respective order.

Parameters:

delegates - The delegates to include in the factory

Returns:

an instance delegating to the given delegates

ordered

public static MultiParameterResolverFactory ordered(List<ParameterResolverFactory> delegates)

Creates a MultiParameterResolverFactory instance with the given delegates, which are automatically ordered based on the @Priority annotation on their respective classes. Classes with the same Priority are kept in the order as provided in the delegates.

If one of the delegates is a MultiParameterResolverFactory itself, that factory's delegates are 'mixed' with the given delegates, based on their respective order.

Parameters:

delegates - The delegates to include in the factory

Returns:

an instance delegating to the given delegates

getDelegates

public List<ParameterResolverFactory> getDelegates()

Returns the delegates of this instance, in the order they are evaluated to resolve parameters.

Returns:

the delegates of this instance, in the order they are evaluated to resolve parameters

createInstance

public ParameterResolver createInstance(Annotation[] memberAnnotations,
                               Class<?> parameterType,
                               Annotation[] parameterAnnotations)

Description copied from interface: ParameterResolverFactory

If available, creates a ParameterResolver instance that can provide a parameter of type parameterType for a given message.

If the ParameterResolverFactory cannot provide a suitable ParameterResolver, returns null.

Specified by:

createInstance in interface ParameterResolverFactory

Parameters:

memberAnnotations - annotations placed on the member (e.g. method)

parameterType - the parameter type to find a resolver for

parameterAnnotations - annotations placed on the parameter

Returns:

a suitable ParameterResolver, or null if none is found