initial commit

src/ZM/DB/Table.php

@@ -0,0 +1,79 @@
+<?php
+
+
+namespace ZM\DB;
+
+
+
+class Table
+{
+    private $table_name;
+
+    /** @var SelectBody[] */
+    public $cache = [];
+
+    private static $table_instance = [];
+
+    private $enable_cache;
+
+    public function __construct($table_name, $enable_cache) {
+        $this->enable_cache = $enable_cache;
+        $this->table_name = $table_name;
+        self::$table_instance[$table_name] = $this;
+    }
+
+    public static function getTableInstance($table_name) {
+        if (isset(self::$table_instance[$table_name])) return self::$table_instance[$table_name];
+        else return null;
+    }
+
+    public function select($what = []) {
+        return new SelectBody($this, $what == [] ? ["*"] : $what);
+    }
+
+    public function where($column, $operation_or_value, $value = null){
+        return (new SelectBody($this, ["*"]))->where($column, $operation_or_value, $value);
+    }
+
+    public function insert($row) {
+        $this->cache = [];
+        return new InsertBody($this, $row);
+    }
+
+    public function update(array $set_value) {
+        $this->cache = [];
+        return new UpdateBody($this, $set_value);
+    }
+
+    public function delete() {
+        $this->cache = [];
+        return new DeleteBody($this);
+    }
+
+    public function statement($line){
+        $this->cache = [];
+        //TODO: 无返回的statement语句
+    }
+
+    public function paintWhereSQL($rule, $operator) {
+        if ($rule == []) return ["", []];
+        $msg = "";
+        $param = [];
+        foreach ($rule as $k => $v) {
+            if ($msg == "") {
+                $msg .= $k . " $operator ? ";
+            } else {
+                $msg .= "AND " . $k . " $operator ?";
+            }
+            $param[] = $v;
+        }
+        return [$msg, $param];
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getTableName() { return $this->table_name; }
+
+    public function isCacheEnabled() { return $this->enable_cache; }
+}