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/*
* Jakarta Bean Validation API
*
* License: Apache License, Version 2.0
* See the license.txt file in the root directory or .
*/
package javax.validation;
import java.io.InputStream;
import javax.validation.spi.ValidationProvider;
import javax.validation.valueextraction.ValueExtractor;
import javax.validation.valueextraction.ValueExtractorDeclarationException;
/**
* Receives configuration information, selects the appropriate
* Jakarta Bean Validation provider and builds the appropriate {@link ValidatorFactory}.
*
* Usage:
*
* //provided by one of the Validation bootstrap methods
* Configuration<?> configuration =
* ValidatorFactory = configuration
* .messageInterpolator( new CustomMessageInterpolator() )
* .buildValidatorFactory();
*
*
* By default, the configuration information is retrieved from
* {@code META-INF/validation.xml}.
* It is possible to override the configuration retrieved from the XML file
* by using one or more of the {@code Configuration} methods.
*
* The {@link ValidationProviderResolver} is specified at configuration time
* (see {@link ValidationProvider}).
* If none is explicitly requested, the default {@code ValidationProviderResolver} is used.
*
* The provider is selected in the following way:
*
* - if a specific provider is requested programmatically using
* {@link Validation#byProvider(Class)}, find the first provider implementing
* the provider class requested and use it
* - if a specific provider is requested in {@code META-INF/validation.xml},
* find the first provider implementing the provider class requested and use it
* - otherwise, use the first provider returned by the
* {@code ValidationProviderResolver}
*
*
* Implementations are not meant to be thread-safe.
*
* @param the type of a provider-specific specialization of this contract
*
* @author Emmanuel Bernard
* @author Gunnar Morling
* @author Hardy Ferentschik
* @author Guillaume Smet
*/
public interface Configuration> {
/**
* Ignores data from the {@code META-INF/validation.xml} file if this
* method is called.
*
* This method is typically useful for containers that parse
* {@code META-INF/validation.xml} themselves and pass the information
* via the {@code Configuration} methods.
*
* @return {@code this} following the chaining method pattern.
*/
T ignoreXmlConfiguration();
/**
* Defines the message interpolator used. Has priority over the configuration
* based message interpolator.
*
* If {@code null} is passed, the default message interpolator is used
* (defined in XML or the specification default).
*
* @param interpolator message interpolator implementation
* @return {@code this} following the chaining method pattern
*/
T messageInterpolator(MessageInterpolator interpolator);
/**
* Defines the traversable resolver used. Has priority over the configuration
* based traversable resolver.
*
* If {@code null} is passed, the default traversable resolver is used
* (defined in XML or the specification default).
*
* @param resolver traversable resolver implementation
* @return {@code this} following the chaining method pattern
*/
T traversableResolver(TraversableResolver resolver);
/**
* Defines the constraint validator factory. Has priority over the configuration
* based constraint factory.
*
* If {@code null} is passed, the default constraint validator factory is used
* (defined in XML or the specification default).
*
* @param constraintValidatorFactory constraint factory implementation
* @return {@code this} following the chaining method pattern
*/
T constraintValidatorFactory(ConstraintValidatorFactory constraintValidatorFactory);
/**
* Defines the parameter name provider. Has priority over the configuration
* based provider.
*
* If {@code null} is passed, the default parameter name provider is used
* (defined in XML or the specification default).
*
* @param parameterNameProvider parameter name provider implementation
* @return {@code this} following the chaining method pattern.
*
* @since 1.1
*/
T parameterNameProvider(ParameterNameProvider parameterNameProvider);
/**
* Defines the clock provider. Has priority over the configuration
* based provider.
*
* If {@code null} is passed, the default clock provider is used
* (defined in XML or the specification default).
*
* @param clockProvider clock provider implementation
* @return {@code this} following the chaining method pattern.
*
* @since 2.0
*/
T clockProvider(ClockProvider clockProvider);
/**
* Adds a value extractor. Has priority over any extractor for the same
* type and type parameter detected through the service loader or given in
* the XML configuration.
*
* @param extractor value extractor implementation
* @return {@code this} following the chaining method pattern.
* @throws ValueExtractorDeclarationException if more than one extractor for
* the same type and type parameter is added
* @since 2.0
*/
T addValueExtractor(ValueExtractor extractor);
/**
* Add a stream describing constraint mapping in the Jakarta Bean Validation XML
* format.
*
* The stream should be closed by the client API after the
* {@link ValidatorFactory} has been built. The Jakarta Bean Validation provider
* must not close the stream.
*
* @param stream
* XML mapping stream; the given stream should support the
* mark/reset contract (see {@link InputStream#markSupported()});
* if it doesn't, it will be wrapped into a stream supporting the
* mark/reset contract by the Jakarta Bean Validation provider
*
* @return {@code this} following the chaining method pattern
* @throws IllegalArgumentException if {@code stream} is null
*/
T addMapping(InputStream stream);
/**
* Adds a provider specific property. This property is equivalent to
* XML configuration properties.
* If the underlying provider does not know how to handle the property,
* it must silently ignore it.
*
* Note: Using this non type-safe method is generally not recommended.
*
* It is more appropriate to use, if available, the type-safe equivalent provided
* by a specific provider via its {@link Configuration} subclass.
*
* ValidatorFactory factory = Validation.byProvider(ACMEProvider.class)
* .configure()
* .providerSpecificProperty(ACMEState.FAST)
* .buildValidatorFactory();
*
* This method is typically used by containers parsing {@code META-INF/validation.xml}
* themselves and injecting the state to the {@code Configuration} object.
*
* If a property with a given name is defined both via this method and in the
* XML configuration, the value set programmatically has priority.
*
* If {@code null} is passed as a value, the value defined in XML is used. If no value
* is defined in XML, the property is considered unset.
*
* @param name property name
* @param value property value
* @return {@code this} following the chaining method pattern
* @throws IllegalArgumentException if {@code name} is null
*/
T addProperty(String name, String value);
/**
* Returns an implementation of the {@link MessageInterpolator} interface
* following the default {@code MessageInterpolator} defined in the
* specification:
*
* - use the {@code ValidationMessages} resource bundle to load keys
* - use {@code Locale.getDefault()}
*
*
* @return default {@code MessageInterpolator} implementation compliant with the
* specification
*/
MessageInterpolator getDefaultMessageInterpolator();
/**
* Returns an implementation of the {@link TraversableResolver} interface
* following the default {@code TraversableResolver} defined in the
* specification:
*
* - if Java Persistence is available in the runtime environment,
* a property is considered reachable if Java Persistence considers
* the property as loaded
* - if Java Persistence is not available in the runtime environment,
* all properties are considered reachable
* - all properties are considered cascadable.
*
*
* @return default {@code TraversableResolver} implementation compliant with the
* specification
*/
TraversableResolver getDefaultTraversableResolver();
/**
* Returns an implementation of the {@link ConstraintValidatorFactory} interface
* following the default {@code ConstraintValidatorFactory} defined in the
* specification:
*
* - uses the public no-arg constructor of the {@link ConstraintValidator}
*
*
* @return default {@code ConstraintValidatorFactory} implementation compliant with the
* specification
*/
ConstraintValidatorFactory getDefaultConstraintValidatorFactory();
/**
* Returns an implementation of the {@link ParameterNameProvider}
* interface following the default {@code ParameterNameProvider}
* defined in the specification:
*
* - returns the actual parameter names as provided in the validated
* executable’s definition, if the class file of the executable contains
* parameter name information
* -
* otherwise returns names in the form {@code arg<PARAMETER_INDEX>},
* where {@code PARAMETER_INDEX} starts at 0 for the first parameter,
* e.g. {@code arg0}, {@code arg1} etc.
*
*
* @return default {@code ParameterNameProvider} implementation compliant with
* the specification
*
* @since 1.1
*/
ParameterNameProvider getDefaultParameterNameProvider();
/**
* Returns an implementation of the {@link ClockProvider}
* interface following the default {@code ClockProvider}
* defined in the specification:
*
* - returns a clock representing the current system time and default time
* zone.
*
*
* @return default {@code ClockProvider} implementation compliant with
* the specification
*
* @since 2.0
*/
ClockProvider getDefaultClockProvider();
/**
* Returns configuration information stored in the {@code META-INF/validation.xml} file.
*
* Note:
*
* Implementations are encouraged to lazily build this object to delay parsing.
*
* @return returns an instance of {@link BootstrapConfiguration}; this method never
* returns {@code null}; if there is no {@code META-INF/validation.xml} the
* different getters of the returned instance will return {@code null}
* respectively an empty set or map
*
* @since 1.1
*/
BootstrapConfiguration getBootstrapConfiguration();
/**
* Build a {@link ValidatorFactory} implementation.
*
* @return the {@code ValidatorFactory}
* @throws ValidationException if the {@code ValidatorFactory} cannot be built
*/
ValidatorFactory buildValidatorFactory();
}