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eFaps is a framework used to map objects with or without attached files to a relational database and optional file systems (only for attaches files). Configurable access control can be provided down to object and attribute level depending on implementation and use case. Depending on requirements, events (like triggers) allow to implement business logic and to separate business logic from user interface. The framework includes integrations (e.g. webdav, full text search) and a web application as 'simple' configurable user interface. Some best practises, example web application modules (e.g. team work module) support administrators and implementers using this framework.

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/*
 * Copyright 2003 - 2012 The eFaps Team
 *
 * 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.
 *
 * Revision:        $Rev: 7483 $
 * Last Changed:    $Date: 2012-05-11 11:57:38 -0500 (Fri, 11 May 2012) $
 * Last Changed By: $Author: [email protected] $
 */

package org.efaps.update.schema.program;

import java.net.URL;
import java.util.HashSet;
import java.util.Set;

import org.efaps.ci.CIAdminProgram;
import org.efaps.update.LinkInstance;
import org.efaps.update.schema.program.staticsource.CSSImporter;
import org.efaps.update.util.InstallationException;

/**
 * The class updates programs from type Admin_Program_CSS inside
 * the eFaps database.
 *
 * @author jmox
 * @version $Id: CSSUpdate.java 7483 2012-05-11 16:57:38Z [email protected] $
 */
public class CSSUpdate
    extends AbstractSourceUpdate
{

    /**
     * Link from CSS extending CSS.
     */
    private static final Link LINK2SUPER = new Link(CIAdminProgram.CSS2CSS.getType().getName(),
                                                    CIAdminProgram.CSS2CSS.From.name,
                                                    CIAdminProgram.CSS.getType().getName(),
                                                    CIAdminProgram.CSS2CSS.To.name);

    /**
     * Set off all links for this cssupdate.
     */
    private static final Set ALLLINKS = new HashSet();
    static {
        CSSUpdate.ALLLINKS.add(CSSUpdate.LINK2SUPER);
    }

    /**
     * Constructor.
     *
     * @param _url URL of the file
     */
    protected CSSUpdate(final URL _url)
    {
        super(_url, CIAdminProgram.CSS.getType().getName(), CSSUpdate.ALLLINKS);
    }

    /**
     * Read the file.
     *
     * @param _url URL to the file
     * @return CSSUpdate
     */
    public static CSSUpdate readFile(final URL _url)
    {

        final CSSUpdate ret = new CSSUpdate(_url);
        final CSSDefinition definition = ret.new CSSDefinition(_url);
        ret.addDefinition(definition);
        return ret;
    }

    /**
     *
     */
    public class CSSDefinition
        extends AbstractSourceDefinition
    {

        /**
         * Importer for the css.
         */
        private CSSImporter sourceCode = null;

        /**
         * Construtor.
         *
         * @param _url URL to the css file
         *
         */
        public CSSDefinition(final URL _url)
        {
            super(_url);
        }

        /**
         * Search the instance.
         *
         * @throws InstallationException if the Java source code could not be read or
         *             the file could not be accessed because of the wrong URL
         */
        @Override
        protected void searchInstance()
            throws InstallationException
        {
            if (this.sourceCode == null) {
                this.sourceCode = new CSSImporter(getUrl());
            }
            setName(this.sourceCode.getProgramName());

            if (this.sourceCode.getEFapsUUID() != null) {
                addValue("UUID", this.sourceCode.getEFapsUUID().toString());
            }

            if (this.sourceCode.getExtendSource() != null) {
                addLink(CSSUpdate.LINK2SUPER,
                                new LinkInstance(this.sourceCode.getExtendSource()));
            }

            if (getInstance() == null) {
                setInstance(this.sourceCode.searchInstance());
            }
        }

        /**
         * {@inheritDoc}
         */
        @Override
        protected String getRevision()
            throws InstallationException
        {
            if (this.sourceCode == null) {
                this.sourceCode = new CSSImporter(getUrl());
            }
            return this.sourceCode.getRevision();
        }
    }
}