DatabaseDAO for PostgreSQL

From
https://github.com/Damstre/FreshRSS/blob/be2b15d12c413755be64ecb0625dce5a8ad280bf/app/Models/DatabaseDAOpgSQL.php

app/Models/DatabaseDAOPGSQL.php

@@ -0,0 +1,43 @@
+<?php
+
+/**
+ * This class is used to test database is well-constructed.
+ */
+class FreshRSS_DatabaseDAOPGSQL extends FreshRSS_DatabaseDAO {
+	public function tablesAreCorrect() {
+		$db = FreshRSS_Context::$system_conf->db;
+		$dbowner = $db['user'];
+		$sql = 'SELECT * FROM pg_catalog.pg_tables where tableowner=?';
+		$stm = $this->bd->prepare($sql);
+		$values = array($dbowner);
+		$stm->execute($values);
+		$res = $stm->fetchAll(PDO::FETCH_ASSOC);
+		
+		$tables = array(
+			$this->prefix . 'category' => false,
+			$this->prefix . 'feed' => false,
+			$this->prefix . 'entry' => false,
+		);
+		foreach ($res as $value) {
+			$tables[array_pop($value)] = true;
+		}
+
+		return count(array_keys($tables, true, true)) == count($tables);
+	}
+
+	public function getSchema($table) {
+		$sql = 'select column_name as field, data_type as type, column_default as default, is_nullable as null from INFORMATION_SCHEMA.COLUMNS where table_name = ?';
+		$stm = $this->bd->prepare($sql);
+		$stm->execute(array($this->prefix . $table));
+		return $this->listDaoToSchema($stm->fetchAll(PDO::FETCH_ASSOC));
+	}
+
+	public function daoToSchema($dao) {
+		return array(
+			'name' => $dao['field'],
+			'type' => strtolower($dao['type']),
+			'notnull' => (bool)$dao['null'],
+			'default' => $dao['default'],
+		);
+	}
+}