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authorSilvio <silvio@devlet.com.br>2010-08-18 15:22:43 -0300
committerSilvio <silvio@devlet.com.br>2010-08-18 15:22:43 -0300
commitad8d8568b683e6935bec64abe88f79bf31706dd7 (patch)
tree43d00493cf8676acbcf4bec74bf44c717107ecd6 /classes/backends/PhpIsisDb.php
parent219aa7f6b4a19b723b0c25683801b1b5d502e9f4 (diff)
downloadcinisis-ad8d8568b683e6935bec64abe88f79bf31706dd7.tar.gz
cinisis-ad8d8568b683e6935bec64abe88f79bf31706dd7.tar.bz2
Adding audit and finder classes, cleanup and organization
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+<?php
+
+/**
+ * PHP-Isis implementation of IsisDb.
+ *
+ * @warning
+ * This implementation is currently outdated and lacks
+ * basic functionalities such as subfield handling and
+ * therefore it's use is not recommended.
+ */
+class PhpIsisDb implements IsisDb {
+ /**
+ * @var $db
+ * Database resource.
+ */
+ var $db;
+
+ /**
+ * @var $format
+ * Database format, derived from $schema.
+ */
+ var $format;
+
+ /**
+ * @var $log
+ * Class action log.
+ */
+ var $log;
+
+ /**
+ * Constructor.
+ *
+ * @see IsisDb::__construct()
+ */
+ public function __construct($schema) {
+ // Save db schema.
+ $this->format = $schema;
+
+ // Setup $fdt.
+ foreach ($schema['fields'] as $field => $info) {
+ $this->fdt[$field] = $info['name'];
+ }
+
+ // Open the database.
+ $name = $schema['db']['name'];
+ $this->db = isis_open(Cinisis::file("$name/$name", 'db'));
+ }
+
+ /**
+ * Read an entry.
+ *
+ * The PHP-Isis API doen't implement such feature so we
+ * have to emulate it by geting all entries and using
+ * isis_data_seek() to get the desired record.
+ *
+ * @see IsisDb::read()
+ *
+ * @todo
+ * Subfield handling.
+ */
+ public function read($id) {
+ $results = isis_search('$', $this->db);
+ if (!isis_data_seek($results, $id - 1)) {
+ return FALSE;
+ }
+
+ // Tag results.
+ $data = $this->tag(isis_fetch_array($results));
+
+ // Charset conversion.
+ array_walk_recursive($data, array(__CLASS__, 'charset'));
+
+ // Return the result.
+ return $data;
+ }
+
+ /**
+ * Return number of entries in the database.
+ *
+ * @see IsisDb::entries()
+ */
+ public function entries() {
+ return isis_last_mfn($this->db);
+ }
+
+ /**
+ * Return an example schema.
+ *
+ * @see IsisDb::example()
+ */
+ public function example() {
+ return SchemaDb::example();
+ }
+
+ /**
+ * Check configuration.
+ *
+ * @see IsisDb::check()
+ */
+ static function check($schema, $section = NULL) {
+ // Check API availability.
+ if (!function_exists('isis_open')) {
+ throw new Exception('Could not find function isis_open. Please check your php-isis installation.');
+ return FALSE;
+ }
+
+ // Check schema configuration.
+ return SchemaDb::check($schema, $section);
+ }
+
+ /**
+ * Tag results of a db query.
+ *
+ * This function converts the keys of query result from field
+ * numbers to names.
+ *
+ * @param $results
+ * Database query results.
+ *
+ * @return
+ * Tagged database result.
+ */
+ function tag($results) {
+ foreach ($results as $key => $value) {
+ if ($key != 'mfn') {
+ $name = $this->format['fields'][$key]['name'];
+ $data[$name] = $value;
+ }
+ }
+
+ return $data;
+ }
+
+ /**
+ * Charset conversion.
+ *
+ * Converts a string from the database charset to UTF-8.
+ *
+ * @param $data
+ * String to be converted.
+ *
+ * @return
+ * String converted to UTF-8.
+ */
+ function charset(&$data) {
+ $data = iconv($this->format['db']['charset'], 'UTF-8', $data);
+ }
+
+ /**
+ * Class logger.
+ *
+ * @param $message
+ * Log message.
+ */
+ function logger($message) {
+ $this->log[] = $message;
+ }
+}