90 lines
2.4 KiB
Java
90 lines
2.4 KiB
Java
/*
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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.persistence.api;
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import java.text.MessageFormat;
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import java.util.ArrayList;
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import java.util.List;
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import li.strolch.agent.api.ResourceMap;
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import li.strolch.exception.StrolchException;
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import li.strolch.model.Resource;
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import li.strolch.service.api.Command;
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import li.strolch.utils.dbc.DBC;
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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 AddResourcesCommand extends Command {
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private List<Resource> resources = new ArrayList<>();
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private final List<Resource> added = new ArrayList<>();
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public AddResourcesCommand(StrolchTransaction tx) {
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super(tx);
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}
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/**
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* @param resources
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* the resources to set for adding
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*/
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public void setResources(List<Resource> resources) {
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this.resources = resources;
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}
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/**
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* @param resource
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* the resource to add for adding
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*/
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public void addResource(Resource resource) {
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this.resources.add(resource);
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}
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@Override
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public void validate() {
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DBC.PRE.assertNotNull("Resources may not be null!", this.resources);
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}
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@Override
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public void doCommand() {
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this.resources.forEach(resource -> tx().lock(resource));
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ResourceMap resourceMap = tx().getResourceMap();
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this.resources.forEach(resource -> {
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if (resourceMap.hasElement(tx(), resource.getType(), resource.getId())) {
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String msg = MessageFormat.format("The Resource {0} already exists!", resource.getLocator());
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throw new StrolchException(msg);
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}
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resourceMap.add(tx(), resource);
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this.added.add(resource);
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});
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}
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@Override
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public void undo() {
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if (tx().isRollingBack() && !this.added.isEmpty()) {
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this.added.forEach(resource -> {
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ResourceMap resourceMap = tx().getResourceMap();
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if (resourceMap.hasElement(tx(), resource.getType(), resource.getId()))
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resourceMap.remove(tx(), resource);
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});
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}
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}
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}
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