de.iritgo.aktario.jdbc.StoreObject.java Source code

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Here is the source code for de.iritgo.aktario.jdbc.StoreObject.java

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/**
 * This file is part of the Iritgo/Aktario Framework.
 *
 * Copyright (C) 2005-2011 Iritgo Technologies.
 * Copyright (C) 2003-2005 BueroByte GbR.
 *
 * Iritgo licenses this file to You 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.
 */

package de.iritgo.aktario.jdbc;

import de.iritgo.aktario.core.Engine;
import de.iritgo.aktario.core.command.Command;
import de.iritgo.aktario.core.iobject.IObjectList;
import de.iritgo.aktario.core.logger.Log;
import de.iritgo.aktario.framework.base.DataObject;
import org.apache.commons.dbutils.DbUtils;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Iterator;
import java.util.Map;

/**
 * This command stores the specified user to the database.
 *
 * <table>
 *   <tr><th>Parameter</th><th>Type</th><th>Description</th></tr>
 *   <tr><td>dataobject</td><td>DataObject</td><td>The object to store in the database.</td></tr>
 *   <tr><td>owner</td><td>DataObject</td><td>The owner object to create the relations.</td></tr>
 *   <tr><td>listAttribute</td><td>String</td><td>The name of the IObjectList for the relation.</td></tr>
 * </table>
 */
public class StoreObject extends Command {
    /**
     * Create a new <code>StoreUser</code> command.
     */
    public StoreObject() {
        super("persist.StoreObject");
    }

    /**
     * Perform the command.
     */
    public void perform() {
        insert((DataObject) properties.get("dataobject"), (DataObject) properties.get("owner"),
                (String) properties.get("listattribute"));
    }

    /**
     * Insert a new data object into the database.
     *
     * @param object The data object to create.
     * @param owner The data object owning this one.
     * @param listAttribute The name of the list attribute to which the new
     *   object belongs.
     */
    private void insert(DataObject object, DataObject owner, String listAttribute) {
        Connection connection = null;
        PreparedStatement stmt = null;

        try {
            JDBCManager jdbcManager = (JDBCManager) Engine.instance().getManager("persist.JDBCManager");
            DataSource dataSource = jdbcManager.getDefaultDataSource();

            connection = dataSource.getConnection();

            StringBuffer sqlFields = new StringBuffer("id");
            StringBuffer sqlValues = new StringBuffer("?");

            for (Iterator i = object.getAttributes().entrySet().iterator(); i.hasNext();) {
                Map.Entry attribute = (Map.Entry) i.next();

                if (attribute.getValue() instanceof IObjectList) {
                    continue;
                }

                sqlFields.append(", " + (String) attribute.getKey());
                sqlValues.append(", ?");
            }

            String sql = "insert into " + object.getTypeId() + " (" + sqlFields.toString() + ") values ("
                    + sqlValues.toString() + ")";

            stmt = connection.prepareStatement(sql);
            putAttributesToStatement(object, stmt);
            stmt.execute();

            Log.logVerbose("persist", "JDBCManager",
                    "CREATED " + object.getTypeId() + ":" + object.getUniqueId() + " |" + sql + "|");

            stmt.close();

            if (owner != null) {
                sql = "insert into IritgoObjectList (type, id, attribute, elemType, elemId) values (?, ?, ?, ?, ?)";

                stmt = connection.prepareStatement(sql);
                stmt.setString(1, owner.getTypeId());
                stmt.setLong(2, owner.getUniqueId());
                stmt.setString(3, listAttribute);
                stmt.setString(4, object.getTypeId());
                stmt.setLong(5, object.getUniqueId());
                stmt.execute();

                Log.logVerbose("persist", "StoreObject",
                        "CREATED REFRENCE " + owner.getTypeId() + ":" + owner.getUniqueId() + " => "
                                + object.getTypeId() + ":" + object.getUniqueId() + " |" + sql + "|");
            }
        } catch (Exception x) {
            Log.logDebug("persist", "StoreObject", "Error while creating new database record: " + x);
        } finally {
            DbUtils.closeQuietly(stmt);
            DbUtils.closeQuietly(connection);
        }
    }

    /**
     * Transfer all attribute values of a data object to the specified
     * prepared statement.
     *
     * @param object The data object to transfer.
     * @param stmt The prepared statement.
     * @throws SQLException If an attribute could not be set.
     */
    private void putAttributesToStatement(DataObject object, PreparedStatement stmt) throws SQLException {
        stmt.setLong(1, object.getUniqueId());

        int pos = 2;

        for (Iterator i = object.getAttributes().entrySet().iterator(); i.hasNext();) {
            Map.Entry attribute = (Map.Entry) i.next();

            if (attribute.getValue() instanceof IObjectList) {
                continue;
            }

            stmt.setObject(pos++, attribute.getValue());
        }
    }
}