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/*
* SQLElements object-oriented SQL parsing and generation library
*
* Copyright (c) 2003, 2004, 2005 Israfil Consulting Services Corporation
* Copyright (c) 2003, 2004, 2005 Christian Edward Gruber
* All Rights Reserved
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, please visit http://www.gnu.org/licenses/lgpl.html
*
* $Id: SimpleColumn.java 25 2005-12-15 23:36:26Z cgruber $
*/
package org.israfil.sqlelements;
import org.israfil.sqlelements.render.SQLRenderContext;
/**
* A simple implementation of a Column which takes a name and a table. The table
* can be any Table object.
*
* @author <a href="mailto:cgruber@israfil.net">Christian Edward Gruber </a>
* @author Latest: $Author: cgruber $
* @version $Revision: 25 $
*/
public class SimpleColumn extends AbstractAliasedSQLElement implements Column
{
protected Table table;
public Table getTable() { return table; }
protected String name;
public String getName() { return name; }
/**
* Constructs a Column implementation instance
*
* @param table A Table object of which this Column is a field.
* @param colName The name of this column
*/
public SimpleColumn(Table table, String colName) {
this(table,colName,null);
}
/**
* Constructs a Column implementation instance
*
* @param table A Table object of which this Column is a field.
* @param colName The name of this column
* @param alias An alternate designation for this column - usually shorter
*/
public SimpleColumn(Table table, String colName, String alias)
{
super(alias);
this.table = table;
this.name = colName;
}
public String render(SQLRenderContext context)
{
return this.name;
}
/**
* Convenience method to create batches of SimpleColumns from an array
* of names. Note: this cannot be used to create SimpleColumns with
* aliases.
*
* @param table A table, within whom the columns will be created.
* @param names An array of column names
* @return an array of SimpleColumns
*/
public static SimpleColumn[] createColumns(Table table, String ... names)
{
SimpleColumn[] result = new SimpleColumn[names.length];
for (int i = 0; i < names.length; i++)
result[i] = new SimpleColumn(table,names[i]);
return result;
}
public String toString()
{
return "SimpleColumn[" + table + "," + name + "]";
}
}
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