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/*
 * Copyright 2017-2021 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.data.model.jpa.criteria;

import io.micronaut.core.annotation.Experimental;
import io.micronaut.core.annotation.NonNull;
import io.micronaut.data.model.jpa.criteria.impl.ExpressionVisitor;
import io.micronaut.data.model.jpa.criteria.impl.SelectionVisitor;
import jakarta.persistence.criteria.Expression;
import jakarta.persistence.criteria.Predicate;

import java.util.Collection;

import static io.micronaut.data.model.jpa.criteria.impl.CriteriaUtils.notSupportedOperation;

/**
 * The internal implementation of {@link Expression}.
 *
 * @param  The expression type
 * @author Denis Stepanov
 * @since 3.2
 */
@Experimental
public interface IExpression extends Expression, ISelection {

    /**
     * @return The expression type
     */
    @NonNull
    ExpressionType getExpressionType();

    @Override
    default Class getJavaType() {
        return getExpressionType().getJavaType();
    }

    @Override
    @NonNull
    default Predicate isNull() {
        throw notSupportedOperation();
    }

    @Override
    @NonNull
    default Predicate isNotNull() {
        throw notSupportedOperation();
    }

    @Override
    @NonNull
    default Predicate in(Object... values) {
        throw notSupportedOperation();
    }

    @Override
    @NonNull
    default Predicate in(Expression... values) {
        throw notSupportedOperation();
    }

    @Override
    @NonNull
    default Predicate in(Collection values) {
        throw notSupportedOperation();
    }

    @Override
    @NonNull
    default Predicate in(Expression> values) {
        throw notSupportedOperation();
    }

    @Override
    @NonNull
    default  Expression as(Class type) {
        throw notSupportedOperation();
    }

    /**
     * Visit the expression.
     *
     * @param expressionVisitor The expression visitor
     */
    void visitExpression(ExpressionVisitor expressionVisitor);

    @Override
    default void visitSelection(SelectionVisitor selectionVisitor) {
        visitExpression(selectionVisitor);
    }
}