/*
* Copyright (c) 2010-2016 Evolveum
*
* 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 com.evolveum.midpoint.gui.api.model;
import org.apache.commons.lang3.Validate;
import org.jetbrains.annotations.NotNull;
/**
* Loadable model whose object is always not null.
* Used to reduce checks of the 'model.getObject() != null' kind.
*
* TODO remove redundant checks after annotations are checked at runtime (needs to be done in maven build)
*
* @author mederly
*/
public abstract class NonEmptyLoadableModel<T> extends LoadableModel<T> implements NonEmptyModel<T> {
public NonEmptyLoadableModel(boolean alwaysReload) {
super(alwaysReload);
}
@NotNull
public T getObject() {
T object = super.getObject();
if (object == null) {
throw new IllegalStateException("Model object is null");
}
return object;
}
public void setObject(@NotNull T object) {
Validate.notNull(object, "Model object is to be set to null");
super.setObject(object);
}
@NotNull
abstract protected T load();
}