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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.db.print;

import org.efaps.admin.datamodel.SQLTable;
import org.efaps.admin.datamodel.Type;
import org.efaps.db.wrapper.SQLSelect;

/**
 * Select Part that connects a child tablt ot his parent table.
 *
 * @author The eFaps Team
 * @version $Id: ChildTableSelectPart.java 7483 2012-05-11 16:57:38Z [email protected] $
 */
public class ChildTableSelectPart
    extends AbstractSelectPart
{

    /**
     * Type this SelectPart belongs to.
     */
    private final Type type;

    /**
     * ChildTable of the main table of the {@link #type}.
     */
    private final SQLTable table;

    /**
     * @param _type type this Type this SelectPart belongs to.
     * @param _table childtable this SelectPart belongs to
     */
    public ChildTableSelectPart(final Type _type,
                                final SQLTable _table)
    {
        this.type = _type;
        this.table = _table;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Type getType()
    {
        return this.type;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public int join(final OneSelect _oneSelect,
                    final SQLSelect _select,
                    final int _relIndex)
    {
        Integer ret;
        final String tableName = this.table.getSqlTable();
        ret = _oneSelect.getTableIndex(tableName, "ID", _relIndex);
        if (ret == null) {
            ret = _oneSelect.getNewTableIndex(tableName, "ID", _relIndex);
            _select.leftJoin(tableName, ret, "ID", _relIndex, "ID");
        }
        return ret;
    }
}