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/**
 * Copyright (c) 2009-2014, Data Geekery GmbH (http://www.datageekery.com)
 * All rights reserved.
 *
 * This work is dual-licensed
 * - under the Apache Software License 2.0 (the "ASL")
 * - under the jOOQ License and Maintenance Agreement (the "jOOQ License")
 * =============================================================================
 * You may choose which license applies to you:
 *
 * - If you're using this work with Open Source databases, you may choose
 *   either ASL or jOOQ License.
 * - If you're using this work with at least one commercial database, you must
 *   choose jOOQ License
 *
 * For more information, please visit http://www.jooq.org/licenses
 *
 * Apache Software License 2.0:
 * -----------------------------------------------------------------------------
 * 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
 *
 *  http://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.
 *
 * jOOQ License and Maintenance Agreement:
 * -----------------------------------------------------------------------------
 * Data Geekery grants the Customer the non-exclusive, timely limited and
 * non-transferable license to install and use the Software under the terms of
 * the jOOQ License and Maintenance Agreement.
 *
 * This library is distributed with a LIMITED WARRANTY. See the jOOQ License
 * and Maintenance Agreement for more details: http://www.jooq.org/licensing
 */

package org.jooq.impl;

import static org.jooq.impl.DSL.trueCondition;

import java.util.Arrays;
import java.util.Collection;

import org.jooq.Clause;
import org.jooq.Condition;
import org.jooq.ConditionProvider;
import org.jooq.Context;
import org.jooq.Field;
import org.jooq.Operator;
import org.jooq.QueryPart;
import org.jooq.Select;

/**
 * @author Lukas Eder
 */
@SuppressWarnings("deprecation")
class ConditionProviderImpl extends AbstractQueryPart implements ConditionProvider, Condition {

    private static final long serialVersionUID = 6073328960551062973L;

    private Condition         condition;

    ConditionProviderImpl() {
    }

    final Condition getWhere() {
        if (condition == null) {
            return trueCondition();
        }

        return condition;
    }

    // -------------------------------------------------------------------------
    // ConditionProvider API
    // -------------------------------------------------------------------------

    @Override
    public final void addConditions(Condition... conditions) {
        addConditions(Operator.AND, conditions);
    }

    @Override
    public final void addConditions(Collection conditions) {
        addConditions(Operator.AND, conditions);
    }

    @Override
    public final void addConditions(Operator operator, Condition... conditions) {
        addConditions(operator, Arrays.asList(conditions));
    }

    @Override
    public final void addConditions(Operator operator, Collection conditions) {
        if (!conditions.isEmpty()) {
            Condition c;

            if (conditions.size() == 1) {
                c = conditions.iterator().next();
            }
            else {
                c = new CombinedCondition(operator, conditions);
            }

            if (getWhere() instanceof TrueCondition) {
                condition = c;
            }
            else {
                condition = new CombinedCondition(operator, Arrays.asList(getWhere(), c));
            }
        }
    }

    @Override
    public final void accept(Context ctx) {
        ctx.visit(getWhere());
    }

    @Override
    public final Clause[] clauses(Context ctx) {
        return null;
    }

    // -------------------------------------------------------------------------
    // Condition API
    // -------------------------------------------------------------------------

    @Override
    public final Condition and(Condition other) {
        return getWhere().and(other);
    }

    @Override
    public final Condition and(Field other) {
        return getWhere().and(other);
    }

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

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

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

    @Override
    public final Condition andNot(Condition other) {
        return getWhere().andNot(other);
    }

    @Override
    public final Condition andNot(Field other) {
        return getWhere().andNot(other);
    }

    @Override
    public final Condition andExists(Select select) {
        return getWhere().andExists(select);
    }

    @Override
    public final Condition andNotExists(Select select) {
        return getWhere().andNotExists(select);
    }

    @Override
    public final Condition or(Condition other) {
        return getWhere().or(other);
    }

    @Override
    public final Condition or(Field other) {
        return getWhere().or(other);
    }

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

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

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

    @Override
    public final Condition orNot(Condition other) {
        return getWhere().orNot(other);
    }

    @Override
    public final Condition orNot(Field other) {
        return getWhere().orNot(other);
    }

    @Override
    public final Condition orExists(Select select) {
        return getWhere().orExists(select);
    }

    @Override
    public final Condition orNotExists(Select select) {
        return getWhere().orNotExists(select);
    }

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




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