org.bndly.common.mapper.DomainCollectionAdapter Maven / Gradle / Ivy
package org.bndly.common.mapper;
/*-
* #%L
* Mapper
* %%
* Copyright (C) 2013 - 2020 Cybercon GmbH
* %%
* 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.
* #L%
*/
import org.bndly.common.reflection.InstantiationUtil;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class DomainCollectionAdapter implements CollectionTypeAdapter {
@Override
public void addObjectToCollection(Object entry, Object collection, MappingState state) {
if (collection != null) {
if (Collection.class.isInstance(collection)) {
Collection.class.cast(collection).add(entry);
}
}
}
@Override
public void iterate(Object collection, CollectionTypeAdapter.IterationHandler handler, MappingState state) {
if (collection != null) {
if (Collection.class.isInstance(collection)) {
for (Object entry : Collection.class.cast(collection)) {
handler.handle(entry, state);
}
}
}
}
@Override
public Class getSupportedCollectionType() {
return Collection.class;
}
@Override
public Object newCollectionInstance(Class type) {
if (List.class.isAssignableFrom(type) && type.isAssignableFrom(ArrayList.class)) {
return new ArrayList();
} else if (Set.class.isAssignableFrom(type) && type.isAssignableFrom(HashSet.class)) {
return new HashSet();
}
Object collection = InstantiationUtil.instantiateType(type);
if (collection != null) {
return collection;
}
throw new IllegalArgumentException("should instantiate unsupported collection type: " + type.getName());
}
}