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/*
* Copyright (C) 2015-2020 S.Violet
*
* 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.
*
* Project GitHub: https://github.com/shepherdviolet/slate
* Email: [email protected]
*/
package sviolet.slate.common.x.conversion.mapxbean.strategy;
import sviolet.slate.common.x.conversion.mapxbean.BeanToMapInflateStrategy;
import sviolet.slate.common.x.conversion.mapxbean.ConversionPath;
import sviolet.slate.common.x.conversion.mapxbean.MxbTypeJudger;
import java.util.Collection;
import java.util.Map;
/**
* [Inflate Strategy] [For Bean -> Map] Inflate the elements of Root node's Collection property (including Map).
* root->**(It's Collection or Map)->**(Inflate these)
*
* NOTE that the property must be a Java Bean, because the program has already determined whether it is a JavaBean
* before calling this interface. (Judged by built-in component {@link MxbTypeJudger#isBean})
*
* References:
*
* In the scene of Bean -> Map. While a Bean is converting to a Map, all the properties of Bean will keep the
* original type by default, unless {@link BeanToMapInflateStrategy} tells the program that it needs to be inflated
* (this method returns true).
* 'Inflate' means that in the scene of Bean -> Map, if a property (of Java Bean) or an element (of Collection) is
* a Java Bean (judged by {@link MxbTypeJudger#isBean}), the property (or element) can be converted to a Map as long
* as the method {@link BeanToMapInflateStrategy#needToBeInflated} returns true. The process of converting property
* (or element) to Map is called 'Inflate'.
*
* @author S.Violet
* @see sviolet.slate.common.x.conversion.mapxbean.MapXBean
* @see BeanToMapInflateStrategy
*/
public class InflateCollectionElements implements BeanToMapInflateStrategy {
/**
* @inheritDoc
*/
@Override
public boolean needToBeInflated(Object value, Class valueClass, MxbTypeJudger typeJudger, ConversionPath conversionPath) {
// root->**(It's Collection or Map)->**(Inflate these)
if (conversionPath.depth() != 2) {
return false;
}
// Parent node is Collection or Map
ConversionPath parentNode = conversionPath.parentNode();
if (parentNode != null) {
if (Collection.class.isAssignableFrom(parentNode.fromClass()) ||
Map.class.isAssignableFrom(parentNode.fromClass())){
return true;
}
}
return false;
}
}