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/*
 * Copyright 2017-2020 original authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.micronaut.validation.validator;

import io.micronaut.core.annotation.NonNull;
import io.micronaut.core.annotation.Nullable;
import io.micronaut.core.beans.BeanIntrospection;

import javax.validation.Constraint;
import javax.validation.ConstraintViolation;
import javax.validation.Valid;
import java.util.Set;

/**
 * Extended version of the {@link javax.validation.Valid} interface for Micronaut's implementation.
 *
 * The {@link #getConstraintsForClass(Class)} method is not supported by the implementation.
 *
 * @author graemerocher
 * @since 1.2
 */
public interface Validator extends javax.validation.Validator {

    /**
     * Annotation used to define an object as valid.
     */
    String ANN_VALID = Valid.class.getName();
    /**
     * Annotation used to define a constraint.
     */
    String ANN_CONSTRAINT = Constraint.class.getName();

    /**
     * Overridden variation that returns a {@link ExecutableMethodValidator}.
     * @return The validator
     */
    @Override
    @NonNull ExecutableMethodValidator forExecutables();

    @Override
    @NonNull  Set> validate(
            @NonNull T object,
            Class... groups
    );

    /**
     * Validate the given introspection and object.
     * @param introspection The introspection
     * @param object The object
     * @param groups The groups
     * @param  The object type
     * @return The constraint violations
     */
    @NonNull
     Set> validate(
            @NonNull BeanIntrospection introspection,
            @NonNull T object, @Nullable Class... groups);

    @Override
    @NonNull  Set> validateProperty(
            @NonNull T object,
            @NonNull String propertyName,
            Class... groups
    );

    @Override
    @NonNull  Set> validateValue(
            @NonNull Class beanType,
            @NonNull String propertyName,
            @Nullable Object value,
            Class... groups
    );

    /**
     * Constructs a new default instance. Note that the returned instance will not contain
     * managed {@link io.micronaut.validation.validator.constraints.ConstraintValidator} instances and using
     * {@link javax.inject.Inject} should be preferred.
     *
     * @return The validator.
     */
    static @NonNull Validator getInstance() {
        return new DefaultValidator(
                new DefaultValidatorConfiguration()
        );
    }
}