org.efaps.db.GeneralInstance Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of efaps-kernel Show documentation

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.

There is a newer version: 3.2.0

Show newest version

/*
 * Copyright 2003 - 2011 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: 6544 $
 * Last Changed:    $Date: 2011-05-12 23:58:38 -0500 (Thu, 12 May 2011) $
 * Last Changed By: $Author: [email protected] $
 */

package org.efaps.db;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;

import org.efaps.db.wrapper.SQLInsert;
import org.efaps.db.wrapper.SQLPart;
import org.efaps.util.EFapsException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * TODO comment!
 *
 * @author The eFaps Team
 * @version $Id: GeneralInstance.java 6544 2011-05-13 04:58:38Z [email protected] $
 */
public final class GeneralInstance
{
    /**
     * Name of the Table.
     */
    public static final String TABLENAME = "T_CMGENINST";

    /**
     * Name of the ID Column.
     */
    public static final String IDCOLUMN = "ID";

    /**
     * Name of the Instance Type ID Column.
     */
    public static final String ISTYPECOLUMN = "INSTTYPEID";

    /**
     * Name of the Instance ID Column.
     */
    public static final String ISIDCOLUMN = "INSTID";

    /**
     * Logging instance used in this class.
     */
    private static final Logger LOG = LoggerFactory.getLogger(GeneralInstance.class);

    /**
     * To make a Singleton.
     */
    private GeneralInstance()
    {
    }

    /**
     * @param _instance Instance the GeneralInstance will be created for.
     * @param _con      Connection the insert will be executed in
     * @throws EFapsException on  error
     */
    protected static void insert(final Instance _instance,
                                 final Connection _con)
        throws EFapsException
    {
        if (_instance.isValid() && _instance.getType().isGeneralInstance()) {
            try {
                final SQLInsert insert = Context.getDbType().newInsert(GeneralInstance.TABLENAME,
                                GeneralInstance.IDCOLUMN,
                                true);
                insert.column(GeneralInstance.ISTYPECOLUMN, _instance.getType().getId());
                insert.column(GeneralInstance.ISIDCOLUMN, _instance.getId());
                insert.execute(_con);
            } catch (final SQLException e) {
                GeneralInstance.LOG.error("executeOneStatement", e);
                throw new EFapsException(GeneralInstance.class, "create", e);
            }
        }
    }

    /**
     * @param _instance Instance the GeneralInstance will be deleted for.
     * @param _con      Connection the insert will be executed in
     * @throws EFapsException on  error
     */
    protected static void delete(final Instance _instance,
                                 final Connection _con)
        throws EFapsException
    {
        if (_instance.isValid() && _instance.getType().isGeneralInstance()) {
            try {
                final Statement stmt = _con.createStatement();
                final StringBuilder cmd = new StringBuilder();
                cmd.append(Context.getDbType().getSQLPart(SQLPart.DELETE)).append(" ")
                    .append(Context.getDbType().getSQLPart(SQLPart.FROM)).append(" ")
                    .append(Context.getDbType().getTableQuote())
                    .append(GeneralInstance.TABLENAME)
                    .append(Context.getDbType().getTableQuote()).append(" ")
                    .append(Context.getDbType().getSQLPart(SQLPart.WHERE)).append(" ")
                    .append(Context.getDbType().getColumnQuote())
                    .append(GeneralInstance.ISIDCOLUMN)
                    .append(Context.getDbType().getColumnQuote())
                    .append(Context.getDbType().getSQLPart(SQLPart.EQUAL))
                    .append(_instance.getId()).append(" ")
                    .append(Context.getDbType().getSQLPart(SQLPart.AND)).append(" ")
                    .append(Context.getDbType().getColumnQuote())
                    .append(GeneralInstance.ISTYPECOLUMN)
                    .append(Context.getDbType().getColumnQuote())
                    .append(Context.getDbType().getSQLPart(SQLPart.EQUAL))
                    .append(_instance.getType().getId()).append(" ");

                stmt.execute(cmd.toString());

                if (GeneralInstance.LOG.isDebugEnabled()) {
                    GeneralInstance.LOG.debug(cmd.toString());
                }
            } catch (final SQLException e) {
                GeneralInstance.LOG.error("executeOneStatement", e);
                throw new EFapsException(GeneralInstance.class, "create", e);
            }
        }
    }
}