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<?php
/**
* Helper functions to convert between ADODB recordset objects and XMLRPC values.
* Uses John Lim's AdoDB and Edd Dumbill's phpxmlrpc libs
*
* @author Daniele Baroncelli
* @author Gaetano Giunta
* @copyright (c) 2003-2004 Giunta/Baroncelli. All rights reserved.
*
* @todo some more error checking here and there
* @todo document the xmlrpc-struct used to encode recordset info
* @todo verify if using xmlrpc_encode($rs->GetArray()) would work with:
* - ADODB_FETCH_BOTH
* - null values
*/
/**
* Include the main libraries
*/
require_once('xmlrpc.inc');
if (!defined('ADODB_DIR')) require_once('adodb.inc.php');
/**
* Builds an xmlrpc struct value out of an AdoDB recordset
*/
function rs2xmlrpcval(&$adodbrs) {
$header = rs2xmlrpcval_header($adodbrs);
$body = rs2xmlrpcval_body($adodbrs);
// put it all together and build final xmlrpc struct
$xmlrpcrs = new xmlrpcval ( array(
"header" => $header,
"body" => $body,
), "struct");
return $xmlrpcrs;
}
/**
* Builds an xmlrpc struct value describing an AdoDB recordset
*/
function rs2xmlrpcval_header($adodbrs)
{
$numfields = $adodbrs->FieldCount();
$numrecords = $adodbrs->RecordCount();
// build structure holding recordset information
$fieldstruct = array();
for ($i = 0; $i < $numfields; $i++) {
$fld = $adodbrs->FetchField($i);
$fieldarray = array();
if (isset($fld->name))
$fieldarray["name"] = new xmlrpcval ($fld->name);
if (isset($fld->type))
$fieldarray["type"] = new xmlrpcval ($fld->type);
if (isset($fld->max_length))
$fieldarray["max_length"] = new xmlrpcval ($fld->max_length, "int");
if (isset($fld->not_null))
$fieldarray["not_null"] = new xmlrpcval ($fld->not_null, "boolean");
if (isset($fld->has_default))
$fieldarray["has_default"] = new xmlrpcval ($fld->has_default, "boolean");
if (isset($fld->default_value))
$fieldarray["default_value"] = new xmlrpcval ($fld->default_value);
$fieldstruct[$i] = new xmlrpcval ($fieldarray, "struct");
}
$fieldcount = new xmlrpcval ($numfields, "int");
$recordcount = new xmlrpcval ($numrecords, "int");
$sql = new xmlrpcval ($adodbrs->sql);
$fieldinfo = new xmlrpcval ($fieldstruct, "array");
$header = new xmlrpcval ( array(
"fieldcount" => $fieldcount,
"recordcount" => $recordcount,
"sql" => $sql,
"fieldinfo" => $fieldinfo
), "struct");
return $header;
}
/**
* Builds an xmlrpc struct value out of an AdoDB recordset
* (data values only, no data definition)
*/
function rs2xmlrpcval_body($adodbrs)
{
$numfields = $adodbrs->FieldCount();
// build structure containing recordset data
$adodbrs->MoveFirst();
$rows = array();
while (!$adodbrs->EOF) {
$columns = array();
// This should work on all cases of fetch mode: assoc, num, both or default
if ($adodbrs->fetchMode == 'ADODB_FETCH_BOTH' || count($adodbrs->fields) == 2 * $adodbrs->FieldCount())
for ($i = 0; $i < $numfields; $i++)
if ($adodbrs->fields[$i] === null)
$columns[$i] = new xmlrpcval ('');
else
$columns[$i] = xmlrpc_encode ($adodbrs->fields[$i]);
else
foreach ($adodbrs->fields as $val)
if ($val === null)
$columns[] = new xmlrpcval ('');
else
$columns[] = xmlrpc_encode ($val);
$rows[] = new xmlrpcval ($columns, "array");
$adodbrs->MoveNext();
}
$body = new xmlrpcval ($rows, "array");
return $body;
}
/**
* Returns an xmlrpc struct value as string out of an AdoDB recordset
*/
function rs2xmlrpcstring (&$adodbrs) {
$xmlrpc = rs2xmlrpcval ($adodbrs);
if ($xmlrpc)
return $xmlrpc->serialize();
else
return null;
}
/**
* Given a well-formed xmlrpc struct object returns an AdoDB object
*
* @todo add some error checking on the input value
*/
function xmlrpcval2rs (&$xmlrpcval) {
$fields_array = array();
$data_array = array();
// rebuild column information
$header = $xmlrpcval->structmem('header');
$numfields = $header->structmem('fieldcount');
$numfields = $numfields->scalarval();
$numrecords = $header->structmem('recordcount');
$numrecords = $numrecords->scalarval();
$sqlstring = $header->structmem('sql');
$sqlstring = $sqlstring->scalarval();
$fieldinfo = $header->structmem('fieldinfo');
for ($i = 0; $i < $numfields; $i++) {
$temp = $fieldinfo->arraymem($i);
$fld = new ADOFieldObject();
while (list($key,$value) = $temp->structeach()) {
if ($key == "name") $fld->name = $value->scalarval();
if ($key == "type") $fld->type = $value->scalarval();
if ($key == "max_length") $fld->max_length = $value->scalarval();
if ($key == "not_null") $fld->not_null = $value->scalarval();
if ($key == "has_default") $fld->has_default = $value->scalarval();
if ($key == "default_value") $fld->default_value = $value->scalarval();
} // while
$fields_array[] = $fld;
} // for
// fetch recordset information into php array
$body = $xmlrpcval->structmem('body');
for ($i = 0; $i < $numrecords; $i++) {
$data_array[$i]= array();
$xmlrpcrs_row = $body->arraymem($i);
for ($j = 0; $j < $numfields; $j++) {
$temp = $xmlrpcrs_row->arraymem($j);
$data_array[$i][$j] = $temp->scalarval();
} // for j
} // for i
// finally build in-memory recordset object and return it
$rs = new ADORecordSet_array();
$rs->InitArrayFields($data_array,$fields_array);
return $rs;
}