org.trimou.engine.resolver

Class MapResolver

java.lang.Object

org.trimou.engine.config.AbstractConfigurationAware

org.trimou.engine.resolver.AbstractResolver

org.trimou.engine.resolver.MapResolver

All Implemented Interfaces:

ConfigurationAware, WithPriority, EnhancedResolver, Resolver

public class MapResolver
extends AbstractResolver

Deals with Map (the key is expected to be an instance of a String) and Mapper instances.

Author:

Martin Kouba

Nested Class Summary

Nested classes/interfaces inherited from interface org.trimou.engine.resolver.EnhancedResolver

EnhancedResolver.Hint

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAP_RESOLVER_PRIORITY

Fields inherited from class org.trimou.engine.config.AbstractConfigurationAware

configuration

Fields inherited from interface org.trimou.engine.resolver.Resolver

DEFAULT_PRIORITY

Constructor Summary

Constructors

Constructor and Description
MapResolver()
MapResolver(int priority)

Method Summary

Modifier and Type	Method and Description
EnhancedResolver.Hint	createHint(Object contextObject, String name, ResolutionContext context) This method may only be called right after the Resolver.resolve(Object, String, ResolutionContext) of the same resolver returns a non-null value.
Object	resolve(Object contextObject, String name, ResolutionContext context) Resolve the value from specified context object and name.

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

getPriority, toString

Methods inherited from class org.trimou.engine.config.AbstractConfigurationAware

checkNotInitialized, init, init

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.trimou.engine.config.ConfigurationAware

getConfigurationKeys, init

Field Detail

MAP_RESOLVER_PRIORITY

public static final int MAP_RESOLVER_PRIORITY

Constructor Detail

MapResolver

public MapResolver()

MapResolver

public MapResolver(int priority)

Method Detail

resolve

public Object resolve(Object contextObject,
                      String name,
                      ResolutionContext context)

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.

ResolutionContext allows to register a callback to release all the relevant resources after the resolved value is used.

Parameters:

contextObject - The current context object (aka base object), may be null

name - The name (the key or its part) is never null

context - The current resolution context

Returns:

the resolved object or null

See Also:

Placeholder.NULL

createHint

public EnhancedResolver.Hint createHint(Object contextObject,
                                        String name,
                                        ResolutionContext context)

Description copied from interface: EnhancedResolver

This method may only be called right after the Resolver.resolve(Object, String, ResolutionContext) of the same resolver returns a non-null value. The parameters must be the same.

The created hint is currently only used to skip the resolver chain for the first part of a key of a variable tag, i.e. foo for {{foo}} or {{foo.bar}}.

This method must not return null.

Specified by:

createHint in interface EnhancedResolver

Overrides:

createHint in class AbstractResolver

Returns:

the hint

See Also:

Hints.INAPPLICABLE_HINT