fr.mby.opa.picsimpl.service.BasicProposalManager.java Source code

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Here is the source code for fr.mby.opa.picsimpl.service.BasicProposalManager.java

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/**
 * Copyright 2013 Maxime Bossard
 *
 * 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 fr.mby.opa.picsimpl.service;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;

import fr.mby.opa.pics.dao.IProposalDao;
import fr.mby.opa.pics.model.ProposalBranch;
import fr.mby.opa.pics.service.IProposalManager;

/**
 * @author Maxime Bossard - 2013
 * 
 */
@Service
public class BasicProposalManager implements IProposalManager {

    private static final String SELECTED_BRANCH_ID = "SELECTED_BRANCH_ID_";

    @Autowired
    private IProposalDao proposalDao;

    @Override
    public void selectBranch(final long albumId, final ProposalBranch branch, final HttpServletRequest request) {
        Assert.notNull(branch, "No ProposalBranch supplied !");
        Assert.notNull(request, "No HttpServletRequest supplied !");

        request.getSession().setAttribute(BasicProposalManager.SELECTED_BRANCH_ID + albumId, branch);
    }

    @Override
    public ProposalBranch getSelectedBranch(final long albumId, final HttpServletRequest request) {
        Assert.notNull(request, "No HttpServletRequest supplied !");

        ProposalBranch branch = this._getSelectedBranch(albumId, request);
        if (branch == null) {
            // get master branch
            final ProposalBranch masterBranch = this.proposalDao.findBranchByName(albumId,
                    IProposalDao.MASTER_BRANCH_NAME);
            if (masterBranch != null) {
                this.selectBranch(albumId, masterBranch, request);
                branch = masterBranch;
            } else {
                throw new IllegalStateException("Master branch should exists !");
            }
        }

        return branch;
    }

    protected ProposalBranch _getSelectedBranch(final long albumId, final HttpServletRequest request) {
        final ProposalBranch branch = (ProposalBranch) request.getSession()
                .getAttribute(BasicProposalManager.SELECTED_BRANCH_ID + albumId);
        return branch;
    }

}