数据库重构

2026-07-07 07:12:47 +08:00 · 2016-04-16 11:18:35 +08:00
parent a20a307e0a
commit 6886c03657
19 changed files with 3014 additions and 2801 deletions
--- a/library/think/db/connector/Oracle.php
+++ b/library/think/db/connector/Oracle.php
@@ -0,0 +1,152 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+
+namespace think\db\connector;
+
+use think\Db;
+use think\db\Connection;
+
+/**
+ * Oracle数据库驱动
+ */
+class Oracle extends Connection
+{
+
+    private $table = '';
+
+    /**
+     * 解析pdo连接的dsn信息
+     * @access public
+     * @param array $config 连接信息
+     * @return string
+     */
+    protected function parseDsn($config)
+    {
+        $dsn = 'oci:dbname=';
+        if (!empty($config['hostname'])) {
+            //  Oracle Instant Client
+            $dsn .= '//' . $config['hostname'] . ($config['hostport'] ? ':' . $config['hostport'] : '') . '/';
+        }
+        $dsn .= $config['database'];
+        if (!empty($config['charset'])) {
+            $dsn .= ';charset=' . $config['charset'];
+        }
+        return $dsn;
+    }
+
+    /**
+     * 执行语句
+     * @access public
+     * @param string $sql  sql指令
+     * @param array $bind 参数绑定
+     * @param boolean $fetch  不执行只是获取SQL
+     * @return integer
+     * @throws \Exception
+     * @throws \think\Exception
+     */
+    public function execute($sql, $bind = [], $fetch = false)
+    {
+        $this->initConnect(true);
+        if (!$this->linkID) {
+            return false;
+        }
+
+        // 根据参数绑定组装最终的SQL语句
+        $this->queryStr = $this->getBindSql($sql, $bind);
+        if ($fetch) {
+            return $this->queryStr;
+        }
+        $flag = false;
+        if (preg_match("/^\s*(INSERT\s+INTO)\s+(\w+)\s+/i", $sql, $match)) {
+            $this->table = Config::get("db_sequence_prefix") . str_ireplace(Config::get("database.prefix"), "", $match[2]);
+            $flag        = (boolean) $this->query("SELECT * FROM all_sequences WHERE sequence_name='" . strtoupper($this->table) . "'");
+        }
+        //释放前次的查询结果
+        if (!empty($this->PDOStatement)) {
+            $this->free();
+        }
+
+        Db::$executeTimes++;
+        try {
+            // 记录开始执行时间
+            $this->debug(true);
+            $this->PDOStatement = $this->linkID->prepare($sql);
+            // 参数绑定操作
+            $this->bindValue($bind);
+            $result = $this->PDOStatement->execute();
+            $this->debug(false);
+            $this->numRows = $this->PDOStatement->rowCount();
+            if ($flag || preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $sql)) {
+                $this->lastInsID = $this->linkID->lastInsertId();
+            }
+            return $this->numRows;
+        } catch (\PDOException $e) {
+            throw new \think\Exception($this->getError());
+        }
+    }
+
+    /**
+     * 取得数据表的字段信息
+     * @access public
+     *
+     * @param $tableName
+     *
+     * @return array
+     */
+    public function getFields($tableName)
+    {
+        list($tableName) = explode(' ', $tableName);
+        $url             = "select a.column_name,data_type,DECODE (nullable, 'Y', 0, 1) notnull,data_default, DECODE (A .column_name,b.column_name,1,0) pk from all_tab_columns a,(select column_name from all_constraints c, all_cons_columns col where c.constraint_name = col.constraint_name and c.constraint_type = 'P' and c.table_name = '" . strtoupper($tableName) . "' ) b where table_name = '" . strtoupper($tableName) . "' and a.column_name = b.column_name (+)";
+        $result          = $this->query($url);
+        $info            = [];
+        if ($result) {
+            foreach ($result as $key => $val) {
+                $val                       = array_change_key_case($val);
+                $info[$val['column_name']] = [
+                    'name'    => $val['column_name'],
+                    'type'    => $val['data_type'],
+                    'notnull' => $val['notnull'],
+                    'default' => $val['data_default'],
+                    'primary' => $val['pk'],
+                    'autoinc' => $val['pk'],
+                ];
+            }
+        }
+        return $info;
+    }
+
+    /**
+     * 取得数据库的表信息（暂时实现取得用户表信息）
+     * @access   public
+     * @return array
+     * @internal param string $dbName
+     */
+    public function getTables()
+    {
+        $result = $this->query("select table_name from all_tables");
+        $info   = [];
+        foreach ($result as $key => $val) {
+            $info[$key] = current($val);
+        }
+        return $info;
+    }
+
+    /**
+     * SQL性能分析
+     * @access protected
+     * @param string $sql
+     * @return array
+     */
+    protected function getExplain($sql)
+    {
+        return [];
+    }
+}