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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.admin.datamodel.attributetype;

import java.sql.Timestamp;
import java.util.Date;

import org.efaps.util.EFapsException;
import org.joda.time.DateTime;
import org.joda.time.format.ISODateTimeFormat;


/**
 * Attribute Type for Date. It uses DateTime by cutting of the Time information.
 *
 * @author The eFaps Team
 * @version $Id: DateType.java 7483 2012-05-11 16:57:38Z [email protected] $
 */
public class DateType
    extends DateTimeType
{
    /**
     * The value that can be set is a Date, a DateTime or a String
     * yyyy-MM-dd'T'HH:mm:ss.SSSZZ. It will be normalized to ISO Calender with
     * TimeZone from SystemAttribute Admin_Common_DataBaseTimeZone. In case that
     * the SystemAttribute is missing UTC will be used.
     * For storing the value in the database the time is set to 00:00;
     *
     * @param _value value to evaluate
     * @return evaluated value
     * @throws EFapsException on error
     */
    @Override
    protected Timestamp eval(final Object[] _value)
        throws EFapsException
    {
        final Timestamp ret;
        if ((_value == null) || (_value.length == 0) || (_value[0] == null)) {
            ret = null;
        } else  {
            DateTime dateTime = new DateTime();
            if (_value[0] instanceof Date) {
                dateTime = new DateTime(_value[0]);
            } else if (_value[0] instanceof DateTime) {
                dateTime = (DateTime) _value[0];
            } else if (_value[0] instanceof String) {
                dateTime = ISODateTimeFormat.dateTime().withOffsetParsed().parseDateTime((String) _value[0]);
            }
            // until now we have a time that depends on the timezone of the application server
            // to convert it in a timestamp for the efaps database the timezone information (mainly the offset)
            // must be removed. This is done by creating a local date with the same, date and time.
            // this guarantees that the datetime inserted into the database depends on the setting
            // in the configuration and not on the timezone for the application server.
            final DateTime localized = new DateTime(dateTime.getYear(),
                                                    dateTime.getMonthOfYear(),
                                                    dateTime.getDayOfMonth(),
                                                    0,
                                                    0,
                                                    0,
                                                    0);
            ret = (localized != null) ? new Timestamp(localized.getMillis()) : null;
        }
        return ret;
    }
}