org.kuali.student.git.model.tree.TreeResourceContext.java Source code

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Here is the source code for org.kuali.student.git.model.tree.TreeResourceContext.java

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/*
 *  Copyright 2014 The Kuali Foundation Licensed under the
 *   Educational Community 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.osedu.org/licenses/ECL-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.kuali.student.git.model.tree;

import java.io.IOException;

import org.apache.commons.lang3.StringUtils;
import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.lib.ObjectId;
import org.kuali.student.git.model.tree.utils.GitTreeProcessor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author ocleirig
 *
 */
public class TreeResourceContext extends AbstractResourceContext {

    private static final Logger log = LoggerFactory.getLogger(TreeResourceContext.class);

    private GitTreeProcessor treeProcessor;

    /**
     * @param type
     * @param objectId
     */
    public TreeResourceContext(GitTreeProcessor treeProcessor, ObjectId objectId) {
        super("tree", objectId);
        this.treeProcessor = treeProcessor;
    }

    /* (non-Javadoc)
     * @see org.kuali.student.git.model.tree.GitTreeData.ResourceContext#storeResource(java.lang.String, org.kuali.student.git.model.tree.GitTreeData.GitTreeNodeData)
     */
    @Override
    public void storeResource(String name, GitTreeNodeData node)
            throws MissingObjectException, IncorrectObjectTypeException, IOException {

        GitTreeNodeData newTree = treeProcessor.extractExistingTreeData(objectId, name);

        GitTreeNodeData existing = node.addDirectTree(name, newTree);

        if (existing != null) {

            ObjectId existingObjectId = existing.getOriginalTreeObjectId();

            if (existingObjectId != null && !existingObjectId.equals(objectId)) {

                /*
                 * lets merge the tree.  We take the changes even if there are conflicts on the blob id's.
                 */

                existing.merge(treeProcessor.extractExistingTreeData(objectId, existing.getName()));

                log.warn("merging conflicting trees " + getErrorMessage());
            }
        }

    }

}