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File: Sql_Parser/Sql_ParserInsert.class.php


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  Classes of Tom Schaefer  >  SQL Parse and Compile  >  Sql_Parser/Sql_ParserInsert.class.php  
File: Sql_Parser/Sql_ParserInsert.class.php
Role: Class source
Content type: text/plain
Description: parses insert statement into object
Class: SQL Parse and Compile
Parse and compose SQL queries programatically
 

Contents

Class file image Download
<?php

/**
 *
 * Sql_ParserInsert
 * @package Sql
 * @subpackage Sql_Parser
 * @author Thomas Sch&#65533;fer
 * @since 30.11.2008 07:49:30
 * @desc parses a sql insert statement into object
 */
/**
 *
 * Sql_ParserInsert
 * @package Sql
 * @subpackage Sql_Parser
 * @author Thomas Sch&#65533;fer
 * @since 30.11.2008 07:49:30
 * @desc parses a sql insert statement into object
 */
class Sql_ParserInsert implements Sql_InterfaceParser {

    private function doParse($type="insert") {

        $tree = array('Command' => $type);

        Sql_Parser::getTok();

        if(Sql_Object::token() == "ident" and Sql_Object::lexer()->tokText=="DELAYED") {
                $tree["Statement"][] = Sql_Object::lexer()->tokText;
                Sql_Parser::getTok();
        }

        if(Sql_Object::token() == "ident" and Sql_Object::lexer()->tokText=="IGNORE") {
                $tree["Statement"][] = Sql_Object::lexer()->tokText;
                Sql_Parser::getTok();
        }

        if (Sql_Object::token() == 'into')
        {
            Sql_Parser::getTok();
            if (Sql_Object::token() == 'ident')
            {
                $tree['TableNames'][] = Sql_Object::lexer()->tokText;
                Sql_Parser::getTok();
                if(Sql_Object::token()=="select") {
                    $tree['SubClause'] = Sql_ParserSelect::doParse();
                    return $tree;
                }
            }
            else
            {
                return Sql_Parser::raiseError('Expected table name');
            }

            if (Sql_Object::token() == '(')
            {
                $results = Sql_Parser::getParams();

                if (Sql_Parser::isError($results))
                {
                    return $results;
                }
                else
                {
                    if (sizeof($results))
                    {
                        $tree['ColumnNames'] = $results["values"];
                    }
                }
                Sql_Parser::getTok();
            }

            if (strtolower(Sql_Object::token()) == 'values')
            {
                do {
                    Sql_Parser::getTok();
                    $results = Sql_Parser::getParams();
                    if (Sql_Parser::isError($results))
                    {
                        return $results;
                    }
                    else
                    {
                        if (isset($tree['ColumnDefs']) && (count($tree['ColumnDefs']) != count($results)))
                        {
                            return Sql_Parser::raiseError('field/value mismatch');
                        }
                        if (count($results)) {
                            $values = array();
                            foreach ($results["values"] as $key=>$value) {
                                $values[$key] = array('Value'=>$value, 'Type'=>$results["types"][$key]);
                            }
                            $tree['Values'][] = $values;
                        }
                        else
                        {
                            return Sql_Parser::raiseError('No fields to insert');
                        }
                    }
                    Sql_Parser::getTok();
                } while (Sql_Object::token() == ',');
            }
            else
            {
                return Sql_Parser::raiseError('Expected "values"');
            }
        }
        else
        {
            return Sql_Parser::raiseError('Expected "into"');
        }
        return $tree;
    }

    public static function parse(){
        return self::doParse();
    }

}


 
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