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/*
 * Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
 * All rights reserved.
 *
 * 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
 *
 *
 *
 *
 *
 *
 *
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 *
 */
package org.jooq;

/**
 * The final step in creating a case statement of the type  * CASE WHEN x < 1  THEN 'one'
 *      WHEN x >= 2 THEN 'two'
 *      ELSE            'three'
 * END
 * 
 *
 * @param  The type returned by this case statement
 * @author Lukas Eder
 * @see Case
 */
public interface CaseConditionStep extends Field {

    /**
     * Compare a condition to the already constructed case statement, return
     * result if the condition holds true
     *
     * @param condition The condition to add to the case statement
     * @param result The result value if the condition holds true
     * @return An intermediary step for case statement construction
     */
    @Support
    CaseConditionStep when(Condition condition, T result);

    /**
     * Compare a condition to the already constructed case statement, return
     * result if the condition holds true
     *
     * @param condition The condition to add to the case statement
     * @param result The result value if the condition holds true
     * @return An intermediary step for case statement construction
     */
    @Support
    CaseConditionStep when(Condition condition, Field result);

    /**
     * Compare a condition to the already constructed case statement, return
     * result if the condition holds true
     *
     * @param condition The condition to add to the case statement
     * @param result The result value if the condition holds true
     * @return An intermediary step for case statement construction
     */
    @Support
    CaseConditionStep when(Condition condition, Select> result);

    /**
     * Add an else clause to the already constructed case statement
     *
     * @param result The result value if no other value matches the case
     * @return The resulting field from case statement construction
     */
    @Support
    Field otherwise(T result);

    /**
     * Add an else clause to the already constructed case statement
     *
     * @param result The result value if no other value matches the case
     * @return The resulting field from case statement construction
     */
    @Support
    Field otherwise(Field result);

    /**
     * Add an else clause to the already constructed case statement
     *
     * @param result The result value if no other value matches the case
     * @return The resulting field from case statement construction
     */
    @Support
    Field otherwise(Select> result);
}