/*
 * 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.
 *
 * Other licenses:
 * -----------------------------------------------------------------------------
 * Commercial licenses for this work are available. These replace the above
 * Apache-2.0 license and offer limited warranties, support, maintenance, and
 * commercial database integrations.
 *
 * For more information, please visit: https://www.jooq.org/legal/licensing
 *
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 *
 */
package org.jooq.impl;

import static org.jooq.Clause.CONDITION;
import static org.jooq.Operator.AND;
import static org.jooq.Operator.OR;
import static org.jooq.Operator.XOR;
import static org.jooq.impl.DSL.condition;
import static org.jooq.impl.DSL.exists;
import static org.jooq.impl.DSL.inline;
import static org.jooq.impl.DSL.not;
import static org.jooq.impl.DSL.notExists;
import static org.jooq.impl.Names.N_CONDITION;

import org.jooq.Clause;
import org.jooq.Condition;
import org.jooq.Context;
import org.jooq.Field;
import org.jooq.QueryPart;
import org.jooq.SQL;
import org.jooq.Select;

/**
 * @author Lukas Eder
 */
abstract class AbstractCondition extends AbstractField<Boolean> implements Condition {

    private static final Clause[] CLAUSES = { CONDITION };

    AbstractCondition() {
        super(N_CONDITION, SQLDataType.BOOLEAN);
    }

    @Override
    public Clause[] clauses(Context<?> ctx) {
        return CLAUSES;
    }

    /*
     * Subclasses may override this implementation when implementing
     * A BETWEEN B AND C
     */
    @Override
    public Condition and(Field<Boolean> other) {
        return and(condition(other));
    }

    @Override
    public final Condition or(Field<Boolean> other) {
        return or(condition(other));
    }

    @Override
    public final Condition xor(Field<Boolean> other) {
        return xor(condition(other));
    }

    @Override
    public final Condition and(SQL sql) {
        return and(condition(sql));
    }

    @Override
    public final Condition and(String sql) {
        return and(condition(sql));
    }

    @Override
    public final Condition and(String sql, Object... bindings) {
        return and(condition(sql, bindings));
    }

    @Override
    public final Condition and(String sql, QueryPart... parts) {
        return and(condition(sql, parts));
    }

    @Override
    public final Condition or(SQL sql) {
        return or(condition(sql));
    }

    @Override
    public final Condition or(String sql) {
        return or(condition(sql));
    }

    @Override
    public final Condition or(String sql, Object... bindings) {
        return or(condition(sql, bindings));
    }

    @Override
    public final Condition or(String sql, QueryPart... parts) {
        return or(condition(sql, parts));
    }

    @Override
    public final Condition xor(SQL sql) {
        return xor(condition(sql));
    }

    @Override
    public final Condition xor(String sql) {
        return xor(condition(sql));
    }

    @Override
    public final Condition xor(String sql, Object... bindings) {
        return xor(condition(sql, bindings));
    }

    @Override
    public final Condition xor(String sql, QueryPart... parts) {
        return xor(condition(sql, parts));
    }

    @Override
    public final Condition andNot(Condition other) {
        return and(other.not());
    }

    @Override
    public final Condition andNot(Field<Boolean> other) {
        return andNot(condition(other));
    }

    @Override
    public final Condition orNot(Condition other) {
        return or(other.not());
    }

    @Override
    public final Condition orNot(Field<Boolean> other) {
        return orNot(condition(other));
    }

    @Override
    public final Condition xorNot(Condition other) {
        return xor(other.not());
    }

    @Override
    public final Condition xorNot(Field<Boolean> other) {
        return xorNot(condition(other));
    }

    @Override
    public final Condition andExists(Select<?> select) {
        return and(exists(select));
    }

    @Override
    public final Condition andNotExists(Select<?> select) {
        return and(notExists(select));
    }

    @Override
    public final Condition orExists(Select<?> select) {
        return or(exists(select));
    }

    @Override
    public final Condition orNotExists(Select<?> select) {
        return or(notExists(select));
    }

    @Override
    public final Condition xorExists(Select<?> select) {
        return xor(exists(select));
    }

    @Override
    public final Condition xorNotExists(Select<?> select) {
        return xor(notExists(select));
    }



    // -------------------------------------------------------------------------
    // Generic predicates
    // -------------------------------------------------------------------------

    @Override
    public final Condition and(Condition arg2) {
        return DSL.condition(AND, this, arg2);
    }

    @Override
    public final Condition not() {
        return DSL.not(this);
    }

    @Override
    public final Condition or(Condition arg2) {
        return DSL.condition(OR, this, arg2);
    }

    @Override
    public final Condition xor(Condition arg2) {
        return DSL.condition(XOR, this, arg2);
    }



    // -------------------------------------------------------------------------
    // XXX: Utilities
    // -------------------------------------------------------------------------

    static final void acceptCase(Context<?> ctx, Condition condition) {

        // [#10179] Avoid 3VL when not necessary
        if (condition instanceof AbstractCondition && !((AbstractCondition) condition).isNullable())
            ctx.visit(DSL.when(condition, inline(true))
                         .else_(inline(false)));

        // [#3206] Implement 3VL if necessary or unknown
        else
            ctx.visit(DSL.when(condition, inline(true))
                         .when(DSL.not(condition), inline(false)));
    }
}
