source: branches/autoquest-core-tasktrees-alignment/src/main/java/de/ugoe/cs/autoquest/tasktrees/treeifc/DefaultTaskTraversingVisitor.java @ 1733

//   Copyright 2012 Georg-August-Universität Göttingen, Germany
//
//   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 de.ugoe.cs.autoquest.tasktrees.treeifc;

/**
 * <p>
 * Default implementation for a task visitor performing a traversal of the task
 * </p>
 * 
 * @author Patrick Harms
 */
public class DefaultTaskTraversingVisitor implements ITaskVisitor {

        /*
         * (non-Javadoc)
         * 
         * @see
         * de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskVisitor#visit(IEventTask)
         */
        @Override
        public void visit(IEventTask eventTask) {
                // do nothing
        }

        /*
         * (non-Javadoc)
         * 
         * @see
         * de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskVisitor#visit(IIteration)
         */
        @Override
        public void visit(IIteration iteration) {
                visit((IMarkingTemporalRelationship) iteration);
        }

        /**
         * <p>
         * common implementation for traversing a marking temporal relationship
         * </p>
         * 
         * @param relationship
         *            the marking temporal relationship to be traversed
         */
        public void visit(IMarkingTemporalRelationship relationship) {
                if (relationship.getMarkedTask() != null) {
                        relationship.getMarkedTask().accept(this);
                }
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskVisitor#visit(IOptional)
         */
        @Override
        public void visit(IOptional optional) {
                visit((IMarkingTemporalRelationship) optional);
        }

        /*
         * (non-Javadoc)
         * 
         * @see
         * de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskVisitor#visit(ISelection)
         */
        @Override
        public void visit(ISelection selection) {
                visit((IStructuringTemporalRelationship) selection);
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskVisitor#visit(ISequence)
         */
        @Override
        public void visit(ISequence sequence) {
                visit((IStructuringTemporalRelationship) sequence);
        }

        /**
         * <p>
         * common implementation for traversing a structuring temporal relationship
         * </p>
         * 
         * @param relationship
         *            the structuring temporal relationship to be traversed
         */
        public void visit(IStructuringTemporalRelationship relationship) {
                for (final ITask child : relationship.getChildren()) {
                        child.accept(this);
                }
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskVisitor#visit(ITask)
         */
        @Override
        public void visit(ITask task) {
                if (task instanceof IEventTask) {
                        visit((IEventTask) task);
                } else if (task instanceof IIteration) {
                        visit((IIteration) task);
                } else if (task instanceof IOptional) {
                        visit((IOptional) task);
                } else if (task instanceof ISelection) {
                        visit((ISelection) task);
                } else if (task instanceof ISequence) {
                        visit((ISequence) task);
                }
        }
}