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Grails Web Application Framework
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/*
 * Copyright (C) 2011 SpringSource
 *
 * 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 grails.validation;

import grails.core.GrailsDomainClass;
import grails.core.GrailsDomainClassProperty;
import groovy.lang.Closure;

import java.util.Map;

/**
 * Evaluates and returns constraints.
 *
 * @author Graeme Rocher
 * @since 2.0
 */
public interface ConstraintsEvaluator {

    String PROPERTY_NAME = "constraints";
    String CONSTRAINTS_GROOVY_SCRIPT = "Constraints.groovy";
    String BEAN_NAME = "org.grails.beans.ConstraintsEvaluator";

    /**
     * The default constraints to use
     * @return A map of default constraints
     */
    Map getDefaultConstraints();

    /**
     * Evaluate constraints for the given class
     *
     * @param cls The class to evaluate constraints for
     * @return A map of constrained properties
     */
    Map evaluate(@SuppressWarnings("rawtypes") Class cls);

    /**
     * Evaluate constraints for the given class
     *
     * @param cls The class to evaluate constraints for
     * @param defaultNullable indicates if properties are nullable by default
     * @return A map of constrained properties
     */
    Map evaluate(@SuppressWarnings("rawtypes") Class cls, boolean defaultNullable);

    /**
     * Evaluate constraints for the given class
     *
     * @param cls The class to evaluate constraints for
     * @param defaultNullable indicates if properties are nullable by default
     * @param useOnlyAdHocConstraints indicates if evaluating without pre-declared constraints
     * @param adHocConstraintsClosures ad-hoc constraints to evaluate for
     * @return A map of constrained properties
     */
    Map evaluate(Class cls, boolean defaultNullable, boolean useOnlyAdHocConstraints, Closure... adHocConstraintsClosures);

    /**
     * Evaluate constraints for the given class
     *
     * @param cls The class to evaluate constraints for
     * @return A map of constrained properties
     */
    Map evaluate(GrailsDomainClass cls);

    /**
     * Evaluate constraints for the given object and properties
     *
     * @param object The object
     * @param properties The domain class properties
     * @return A map of constraints
     */
    Map evaluate(Object object, GrailsDomainClassProperty[] properties);

    /**
     * Evaluate constraints for the given Class and properties
     *
     * @param cls The object
     * @param properties The domain class properties
     * @return A map of constraints
     */
    Map evaluate(Class cls, GrailsDomainClassProperty[] properties);
}