<?php
/**
*
* Sql_CompilerUnion
* @package Sql
* @subpackage Sql_Parser
* @author Thomas Schäfer
* @since 12.12.2008
* @desc compile a sql Union object into string
*/
/**
*
* Sql_CompilerUnion
* @package Sql
* @subpackage Sql_Parser
* @author Thomas Schäfer
* @since 12.12.2008
* @desc compile a sql Union object into string
*/
class Sql_CompilerUnion implements Sql_InterfaceCompiler
{
public static function doCompile()
{
$tree = Sql_Object::get("tree");
$array = array();
foreach(Sql_Object::get("tree.Union") as $index => $statement) {
$compose = new Sql_Compiler();
$array[] = $compose->compile($statement);
}
return implode(Sql_Compiler::LINEBREAK . strtoupper($tree["Command"]). Sql_Compiler::LINEBREAK, $array);
}
public static function compile($tree)
{
Sql_Object::set("tree", $tree);
return self::doCompile();
}
}
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