/*
* Copyright 2016 Victor Albertos
*
* 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 io.rx_cache2.internal.migration;
import io.reactivex.Observable;
import java.util.List;
import javax.inject.Inject;
public final class DeleteRecordMatchingClassName {
private final io.rx_cache2.internal.Persistence persistence;
private final String encryptKey;
private List<Class> classes;
@Inject public DeleteRecordMatchingClassName(io.rx_cache2.internal.Persistence persistence, String encryptKey) {
this.persistence = persistence;
this.encryptKey = encryptKey;
}
public DeleteRecordMatchingClassName with(List<Class> classes) {
this.classes = classes;
return this;
}
public Observable<Integer> react() {
if (classes.isEmpty()) return Observable.just(1);
List<String> allKeys = persistence.allKeys();
for (String key : allKeys) {
io.rx_cache2.internal.Record record = persistence.retrieveRecord(key, false, encryptKey);
if (record == null) {
record = persistence.retrieveRecord(key, true, encryptKey);
}
if (evictRecord(record)) {
persistence.evict(key);
}
}
return Observable.just(1);
}
private boolean evictRecord(io.rx_cache2.internal.Record record) {
String candidate = record.getDataClassName();
for (Class aClass : classes) {
String className = aClass.getName();
if (className.equals(candidate)) {
return true;
}
}
return false;
}
}