org.trimou.engine.resolver

Class ReflectionResolver

java.lang.Object

org.trimou.engine.resolver.AbstractResolver

org.trimou.engine.resolver.ReflectionResolver

All Implemented Interfaces:

com.google.common.cache.RemovalListener<org.trimou.engine.resolver.MemberKey,com.google.common.base.Optional<org.trimou.engine.resolver.MemberWrapper>>, ConfigurationAware, WithPriority, Resolver

public class ReflectionResolver
extends AbstractResolver
implements com.google.common.cache.RemovalListener<org.trimou.engine.resolver.MemberKey,com.google.common.base.Optional<org.trimou.engine.resolver.MemberWrapper>>

Reflection-based resolver attempts to find a matching member on the context object class and its superclasses. Methods have higher priority than fields.

Author:

Martin Kouba

See Also:

Reflections.getAccesibleField(Class, String), Reflections.getAccesibleMethod(Class, String)

Field Summary

Fields

Modifier and Type	Field and Description
static ConfigurationKey	MEMBER_CACHE_MAX_SIZE_KEY Limit the size of the cache (e.g. to avoid problems when dynamic class compilation is involved).
static int	REFLECTION_RESOLVER_PRIORITY

Fields inherited from interface org.trimou.engine.priority.WithPriority

BUILTIN_RESOLVERS_DEFAULT_PRIORITY, BUILTIN_TEMPLATE_LOCATORS_DEFAULT_PRIORITY, EXTENSION_RESOLVERS_DEFAULT_PRIORITY

Constructor Summary

Constructors

Constructor and Description
ReflectionResolver()

Method Summary

Methods

Modifier and Type	Method and Description
Set<ConfigurationKey>	getConfigurationKeys()
int	getPriority()
void	init(Configuration configuration) Initialize the instance.
void	onRemoval(com.google.common.cache.RemovalNotification<org.trimou.engine.resolver.MemberKey,com.google.common.base.Optional<org.trimou.engine.resolver.MemberWrapper>> notification)
Object	resolve(Object contextObject, String name) Resolve the value from specified context object and name.

Methods inherited from class org.trimou.engine.resolver.AbstractResolver

toString

Methods inherited from class java.lang.Object

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

Field Detail

REFLECTION_RESOLVER_PRIORITY

public static final int REFLECTION_RESOLVER_PRIORITY

MEMBER_CACHE_MAX_SIZE_KEY

public static final ConfigurationKey MEMBER_CACHE_MAX_SIZE_KEY

Limit the size of the cache (e.g. to avoid problems when dynamic class compilation is involved). Use zero value to disable the cache.

See Also:

CacheBuilder.maximumSize(long)

Constructor Detail

ReflectionResolver

public ReflectionResolver()

Method Detail

resolve

public Object resolve(Object contextObject,
             String name)

Description copied from interface: Resolver

Resolve the value from specified context object and name. This method should return as fast as possible. The best practice is to verify params first and return null in case of the resolver is not capable of resolving it.

Specified by:

resolve in interface Resolver

Parameters:

contextObject - The context object may be null

name - The name (part of the key) is never null

Returns:

the resolved object or null

getPriority

public int getPriority()

Specified by:

getPriority in interface WithPriority

Returns:

the priority value

init

public void init(Configuration configuration)

Description copied from interface: ConfigurationAware

Initialize the instance.

Specified by:

init in interface ConfigurationAware

Overrides:

init in class AbstractResolver

getConfigurationKeys

public Set<ConfigurationKey> getConfigurationKeys()

Specified by:

getConfigurationKeys in interface ConfigurationAware

Overrides:

getConfigurationKeys in class AbstractResolver

Returns:

the set of configuration keys to discover

onRemoval

public void onRemoval(com.google.common.cache.RemovalNotification<org.trimou.engine.resolver.MemberKey,com.google.common.base.Optional<org.trimou.engine.resolver.MemberWrapper>> notification)

Specified by:

onRemoval in interface com.google.common.cache.RemovalListener<org.trimou.engine.resolver.MemberKey,com.google.common.base.Optional<org.trimou.engine.resolver.MemberWrapper>>