[New] Added new ElementDateVisitor and ElementStateVisitor
These allow to get the date or state respectively from a StrolchRootElement which supports such a field (Order and/or Activity) and thus eliminates the need for casting
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/*
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* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package li.strolch.model.visitor;
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import java.util.Date;
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import li.strolch.model.Order;
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import li.strolch.model.Resource;
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import li.strolch.model.activity.Activity;
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/**
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* @author Robert von Burg <eitch@eitchnet.ch>
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*/
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public class ElementDateVisitor implements StrolchRootElementVisitor<Date> {
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@Override
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public Date visitOrder(Order order) {
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return order.getDate();
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}
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@Override
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public Date visitResource(Resource resource) {
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throw new IllegalArgumentException("Resources have no date!");
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}
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@Override
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public Date visitActivity(Activity activity) {
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throw new IllegalArgumentException("Activities have no date!");
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}
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}
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/*
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* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package li.strolch.model.visitor;
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import li.strolch.model.Order;
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import li.strolch.model.Resource;
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import li.strolch.model.State;
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import li.strolch.model.activity.Activity;
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/**
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* @author Robert von Burg <eitch@eitchnet.ch>
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*/
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public class ElementStateVisitor implements StrolchRootElementVisitor<State> {
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@Override
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public State visitOrder(Order order) {
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return order.getState();
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}
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@Override
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public State visitResource(Resource resource) {
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throw new IllegalArgumentException("Resources have no state!");
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}
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@Override
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public State visitActivity(Activity activity) {
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return activity.getState();
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}
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}
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