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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.common;

import java.net.URL;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;

import org.efaps.db.Context;
import org.efaps.db.Insert;
import org.efaps.db.transaction.ConnectionResource;
import org.efaps.update.AbstractUpdate;
import org.efaps.update.util.InstallationException;
import org.efaps.util.EFapsException;

/**
 * Handles the import / update of system configurations for eFaps read from a
 * XML configuration item file.
 *
 * @author The eFaps Team
 * @version $Id: NumberGeneratorUpdate.java 7483 2012-05-11 16:57:38Z [email protected] $
 */
public class NumberGeneratorUpdate
    extends AbstractUpdate
{
    /**
     * @param _url URL to the xml file
     */
    public NumberGeneratorUpdate(final URL _url)
    {
        super(_url, "Admin_Common_NumGen");
    }

    /**
     * @see org.efaps.update.AbstractUpdate#newDefinition()
     * @return new NumberGeneratorDefinition
     */
    @Override
    protected AbstractDefinition newDefinition()
    {
        return new NumberGeneratorDefinition();
    }

    /**
     * Definition for the NumberGenerator.
     */
    public class NumberGeneratorDefinition extends AbstractDefinition
    {

        /**
         * Start value for this NumberGenerator.
         */
        private long startvalue;

        /**
         * {@inheritDoc}
         */
        @Override
        protected void readXML(final List _tags,
                               final Map _attributes,
                               final String _text)
        {
            final String value = _tags.get(0);
            if ("format".equals(value)) {
                addValue("Format", _text);
            } else if ("startvalue".equals(value)) {
                this.startvalue = Long.valueOf(_text);
            } else  {
                super.readXML(_tags, _attributes, _text);
            }
        }

        /**
         * {@inheritDoc}
         */
        @Override
        protected void createInDB(final Insert _insert)
            throws InstallationException
        {
            try  {
                _insert.add("Format", getValue("Format"));
            } catch (final EFapsException e)  {
                throw new InstallationException("Format could not be defined", e);
            }
            super.createInDB(_insert);
            final ConnectionResource con;
            try {
                con = Context.getThreadContext().getConnectionResource();
            } catch (final EFapsException e) {
                throw new InstallationException("Connection resource could not be fetched", e);
            }
            final String name = "numgen_" + ((Long) getInstance().getId()).toString() + "_seq";
            try {
                if (!Context.getDbType().existsSequence(con.getConnection(), name)) {
                    Context.getDbType().createSequence(con.getConnection(), name, this.startvalue);
                }
            } catch (final SQLException e) {
                throw new InstallationException("Sequence '" + name + "' could not be created", e);
            }
        }
    }
}