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<?php
/**
* Malete implementation of IsisDb.
*/
class MaleteDb implements IsisDb {
/**
* @var $fdt
* Field description table.
*/
var $fdt;
/**
* @var $db
* Database resource.
*/
var $db;
/**
* @var $format
* Database format, derived from $schema.
*/
var $format;
/**
* Constructor.
*
* @see IsisDb::__construct()
*/
public function __construct($schema) {
// Save db schema.
$this->format = $schema;
// Setup $fdt used by malete.
foreach ($schema['fields'] as $field => $info) {
$this->fdt[$field] = $info['name'];
}
// Open a database connection.
$this->db = new Isis_Db($this->fdt, $schema['db']['name'], new Isis_Server());
if (!$this->db->srv->sock) {
return FALSE;
}
}
/**
* Read an entry.
*
* @see IsisDb::read()
*/
public function read($id) {
if (!is_numeric($id)) {
return FALSE;
}
if ($results !== FALSE) {
$results = $this->db->read($id);
return $this->tag($results);
}
else {
return FALSE;
}
}
/**
* Return number of rows in the database.
*
* @see IsisDb::read()
*/
public function rows() {
$id = 1;
while($this->db->read($id)) {
$id++;
}
return $id - 1;
}
/**
* Return a default example schema.
*
* @see IsisDb::default_schema()
*/
public function default_schema() {
return SchemaDb::default_schema();
}
/**
* Tag results of a db query.
*
* @param $results
* Database query results.
*
* @return
* Tagged database result.
*/
function tag($results) {
foreach ($results->val as $key => $value) {
$field = $results->tag[$key];
$name = $this->format['fields'][$field]['name'];
// Handles field repetition.
if ($this->format['fields'][$field]['repeat']) {
$data[$name][] = $value;
}
else {
$data[$name] = $value;
}
}
return $data;
}
}
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