DeleteNodeCommand.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.kie.workbench.common.stunner.core.graph.command.impl;

import java.util.logging.Logger;

import org.jboss.errai.common.client.api.annotations.MapsTo;
import org.jboss.errai.common.client.api.annotations.Portable;
import org.kie.workbench.common.stunner.core.command.CommandResult;
import org.kie.workbench.common.stunner.core.graph.Edge;
import org.kie.workbench.common.stunner.core.graph.Node;
import org.kie.workbench.common.stunner.core.graph.command.GraphCommandExecutionContext;
import org.kie.workbench.common.stunner.core.rule.RuleViolation;

/**
 * A Command to delete graph a child node.
 * Does not take care about node'edges neither children nodes.
 */
@Portable
public final class DeleteNodeCommand extends DeregisterNodeCommand {

    private static Logger LOGGER = Logger.getLogger(DeleteNodeCommand.class.getName());

    public DeleteNodeCommand(final @MapsTo("uuid") String uuid) {
        super(uuid);
    }

    public DeleteNodeCommand(final Node<?, Edge> node) {
        super(node);
    }

    @Override
    public CommandResult<RuleViolation> undo(final GraphCommandExecutionContext context) {
        final AddNodeCommand undoCommand = new AddNodeCommand(getRemoved());
        return undoCommand.execute(context);
    }

    @Override
    public String toString() {
        return "DeleteNodeCommand [candidate=" + uuid + "]";
    }
}