Module io.helidon.builder.config

Package io.helidon.builder.config.spi

Class HelidonConfigResolver

java.lang.Object

io.helidon.builder.config.spi.HelidonConfigResolver

All Implemented Interfaces:

ConfigResolver, ConfigResolverProvider

@Singleton
public class HelidonConfigResolver
extends Object
implements ConfigResolver, ConfigResolverProvider

The basic implementation of ConfigResolver simply resolves against Config directly, not "full" Helidon config.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final String	TAG_COMPONENT_TYPE	Tag that represents the component type.
static final String	TAG_META	Tag that represents meta information about the attribute.

Constructor Summary

Constructors

Constructor	Description
HelidonConfigResolver()	Deprecated. needed for Java service loader

Method Summary

Modifier and Type	Method	Description
ConfigResolver	configResolver()	Provide the ConfigResolver implementation.
<T> Optional<T>	of(ResolutionContext ctx, Map<String,Map<String,Object>> meta, ConfigResolverRequest<T> request)	Resolves a ConfigBean singular element value from the backing Config.
<T> Optional<Collection<T>>	ofCollection(ResolutionContext ctx, Map<String,Map<String,Object>> meta, ConfigResolverRequest<T> request)	Resolves a ConfigBean collection-like element value from the backing Config.
<K, V> Optional<Map<K,V>>	ofMap(ResolutionContext ctx, Map<String,Map<String,Object>> meta, ConfigResolverMapRequest<K,V> request)	Resolves a ConfigBean map-like element value from the backing Config.

Methods inherited from class java.lang.Object

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

Field Details

TAG_META

public static final String TAG_META

Tag that represents meta information about the attribute. Used in the maps for various methods herein.

See Also:

• Constant Field Values

TAG_COMPONENT_TYPE

protected static final String TAG_COMPONENT_TYPE

Tag that represents the component type.

See Also:

• Constant Field Values

Constructor Details

HelidonConfigResolver

@Deprecated
public HelidonConfigResolver()

Deprecated.

needed for Java service loader

Default constructor, service loader invoked.

Method Details

configResolver

public ConfigResolver configResolver()

Description copied from interface: ConfigResolverProvider

Provide the ConfigResolver implementation.

Specified by:

configResolver in interface ConfigResolverProvider

Returns:

config resolver

of

public <T> Optional<T> of(ResolutionContext ctx,
 Map<String,Map<String,Object>> meta,
 ConfigResolverRequest<T> request)

Description copied from interface: ConfigResolver

Resolves a ConfigBean singular element value from the backing Config.

Specified by:

of in interface ConfigResolver

Type Parameters:

T - the attribute value type being resolved in the request

Parameters:

ctx - the resolution context

meta - the meta attributes for this config bean

request - the request

Returns:

the resolved value or empty if unable to resolve the request

ofCollection

public <T> Optional<Collection<T>> ofCollection(ResolutionContext ctx,
 Map<String,Map<String,Object>> meta,
 ConfigResolverRequest<T> request)

Description copied from interface: ConfigResolver

Resolves a ConfigBean collection-like element value from the backing Config.

Specified by:

ofCollection in interface ConfigResolver

Type Parameters:

T - the attribute value type being resolved in the request

Parameters:

ctx - the resolution context

meta - the meta attributes for this config bean

request - the request

Returns:

the resolved value or empty if unable to resolve the request

ofMap

public <K,
V> Optional<Map<K,V>> ofMap(ResolutionContext ctx,
 Map<String,Map<String,Object>> meta,
 ConfigResolverMapRequest<K,V> request)

Description copied from interface: ConfigResolver

Resolves a ConfigBean map-like element value from the backing Config.

Specified by:

ofMap in interface ConfigResolver

Type Parameters:

K - the map attribute key type being resolved in the request

V - the map attribute value type being resolved in the request

Parameters:

ctx - the resolution context

meta - the meta attributes for this config bean

request - the request

Returns:

the resolved value or empty if unable to resolve the request