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

import static org.jooq.Clause.CONDITION;
import static org.jooq.Clause.CONDITION_COMPARISON;
import static org.jooq.impl.DSL.inline;

import org.jooq.Clause;
import org.jooq.Condition;
import org.jooq.Configuration;
import org.jooq.Context;
import org.jooq.Field;

/**
 * Abstraction for various "containsIgnoreCase" operations
 *
 * @author lmarchau
 */
final class ContainsIgnoreCase<T> extends AbstractCondition {

    /**
     * Generated UID
     */
    private static final long     serialVersionUID = 1795491010886118843L;

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

    private final Field<T>        lhs;
    private final Field<T>        rhs;
    private final T               value;

    ContainsIgnoreCase(Field<T> field, T value) {
        this.lhs = field;
        this.rhs = null;
        this.value = value;
    }

    ContainsIgnoreCase(Field<T> field, Field<T> rhs) {
        this.lhs = field;
        this.rhs = rhs;
        this.value = null;
    }

    @Override
    public final void accept(Context<?> ctx) {
        ctx.visit(condition(ctx.configuration()));
    }

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

    private final Condition condition(Configuration configuration) {
        Field<String> concat;

        if (rhs == null) {
            concat = DSL.concat(inline("%"), Tools.escapeForLike(value, configuration), inline("%"));
        }
        else {
            concat = DSL.concat(inline("%"), Tools.escapeForLike(rhs, configuration), inline("%"));
        }

        return lhs.likeIgnoreCase(concat, Tools.ESCAPE);
    }
}