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Data Repository Support for Micronaut

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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.impl.predicate;

import io.micronaut.core.annotation.Internal;
import io.micronaut.core.annotation.NonNull;
import io.micronaut.data.model.jpa.criteria.impl.PredicateVisitor;
import jakarta.persistence.criteria.CriteriaBuilder;
import jakarta.persistence.criteria.Expression;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

/**
 * The IN predicate implementation.
 *
 * @param  The expression type
 * @author Denis Stepanov
 * @since 3.2
 */
@Internal
public final class InPredicate extends AbstractPredicate implements CriteriaBuilder.In {

    private final Expression expression;
    private final List> values;
    private final CriteriaBuilder criteriaBuilder;

    public InPredicate(Expression expression, CriteriaBuilder criteriaBuilder) {
        this(expression, Collections.emptyList(), criteriaBuilder);
    }

    public InPredicate(Expression expression, Collection> values, CriteriaBuilder criteriaBuilder) {
        this.expression = expression;
        this.values = new ArrayList<>(values);
        this.criteriaBuilder = criteriaBuilder;
    }

    @NonNull
    public List> getValues() {
        return values;
    }

    @Override
    public Expression getExpression() {
        return expression;
    }

    @Override
    public InPredicate value(T value) {
        values.add(criteriaBuilder.literal(value));
        return this;
    }

    @Override
    public InPredicate value(Expression value) {
        values.add(value);
        return this;
    }

    @Override
    public void visitPredicate(PredicateVisitor predicateVisitor) {
        predicateVisitor.visit(this);
    }

    @Override
    public String toString() {
        return "InPredicate{" +
            "value=" + expression +
            ", values=" + values +
            ", criteriaBuilder=" + criteriaBuilder +
            '}';
    }
}