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The runtime library of DBFlute

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/*
 * Copyright 2014-2021 the original author or 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
 *
 *     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.
 */
package org.dbflute.cbean.scoping;

import org.dbflute.cbean.ConditionBean;

/**
 * The interface of scalar-query.
 *  * fooBhv.scalarSelect(Date.class).max(new ScalarQuery<FooCB>() {
 *     public void query(FooCB cb) {
 *         cb.specify().columnFooDatetime(); // required for a function
 *         cb.query().setFoo...
 *     }
 * }
 * 
 * @param  The type of condition-bean.
 * @author jflute
 */
@FunctionalInterface
public interface ScalarQuery {

    /**
     * Set up your query condition for scalar-query. 

     * Don't call the method 'setupSelect_Xxx()' and 'addOrderBy_Xxx...()'
     * and they are ignored if you call.
     * @param cb The condition-bean for scalar-query. (NotNull)
     */
    void query(CB cb);
}