org.efaps.admin.datamodel.attributetype.DecimalWithUoMType Maven / Gradle / Ivy

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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.math.BigDecimal;
import java.sql.SQLException;

import org.efaps.admin.datamodel.Attribute;
import org.efaps.admin.datamodel.Dimension;
import org.efaps.admin.datamodel.Dimension.UoM;
import org.efaps.admin.datamodel.attributevalue.DecimalWithUoM;
import org.efaps.db.wrapper.AbstractSQLInsertUpdate;
import org.efaps.util.EFapsException;

/**
 * Implements the mapping between values in the database and
 * {@link DecimalWithUoM} values in eFaps.
 *
 * @author The eFaps Team
 * @version $Id: DecimalWithUoMType.java 7483 2012-05-11 16:57:38Z [email protected] $
 */
public class DecimalWithUoMType
    extends AbstractWithUoMType
{
    /**
     * The method prepares the statement for insert the object in the database.
     * It must be overwritten, because this type has at least two columns.
     * {@inheritDoc}
     */
    @Override
    public void prepare(final AbstractSQLInsertUpdate _insertUpdate,
                        final Attribute _attribute,
                        final Object... _values)
        throws SQLException
    {
        if (_attribute.getSqlColNames().size() == 3)  {
            checkSQLColumnSize(_attribute, 3);
        } else  {
            checkSQLColumnSize(_attribute, 2);
        }

        final DecimalWithUoM value = eval(_values);
        _insertUpdate.column(_attribute.getSqlColNames().get(0), value.getValue());
        _insertUpdate.column(_attribute.getSqlColNames().get(1), value.getUoM().getId());
        if (_attribute.getSqlColNames().size() == 3) {
            _insertUpdate.column(_attribute.getSqlColNames().get(2), value.getBaseDouble());
        }
    }

    /**
     * The localized string and the internal string value are equal. So the
     * internal value can be evaluated directly.
     *
     * @param _values   values to evaluate
     * @return evaluated big decimal value with unit of measure
     * @throws SQLException on error
     */
    protected DecimalWithUoM eval(final Object... _values)
        throws SQLException
    {
        final DecimalWithUoM ret;

        if ((_values == null) || (_values.length < 2))  {
            ret = null;
        } else  {
            final BigDecimal value;
            if ((_values[0] instanceof String) && (((String) _values[0]).length() > 0)) {
                try {
                    value = DecimalType.parseLocalized((String) _values[0]);
                } catch (final EFapsException e) {
                    throw new SQLException(e);
                }
            } else if (_values[0] instanceof BigDecimal) {
                value = (BigDecimal) _values[0];
            } else if (_values[0] instanceof Number) {
                value = new BigDecimal(((Number) _values[0]).toString());
            } else  {
                value = null;
            }

            final UoM uom;
            if (_values[1] instanceof UoM) {
                uom = (UoM) _values[1];
            } else if ((_values[1] instanceof String) && (((String) _values[1]).length() > 0)) {
                uom = Dimension.getUoM(Long.parseLong((String) _values[1]));
            } else if (_values[1] instanceof Number) {
                uom = Dimension.getUoM(((Number) _values[1]).longValue());
            } else  {
                uom = null;
            }
            ret = new DecimalWithUoM(value, uom);
        }
        return ret;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected Object readValue(final Object _object)
    {
        final BigDecimal ret;

        if (_object instanceof BigDecimal) {
            ret = (BigDecimal) _object;
        } else if (_object != null) {
            ret = new BigDecimal(_object.toString());
        } else  {
            ret = null;
        }
        return ret;
    }
}