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Internal/package-database/Postgres/DBForge.php

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+<?php namespace ZN\Database\Postgres;
+/**
+ * ZN PHP Web Framework
+ * 
+ * "Simplicity is the ultimate sophistication." ~ Da Vinci
+ * 
+ * @package ZN
+ * @license MIT [http://opensource.org/licenses/MIT]
+ * @author  Ozan UYKUN [ozan@znframework.com]
+ */
+
+use ZN\Database\DriverForge;
+
+class DBForge extends DriverForge
+{
+    /**
+     * Unsupported
+     */
+    public function extras($extras)
+    {
+        return NULL;
+    }
+
+    /**
+     * Modify Column
+     * 
+     * @param string $table
+     * @param array  $column
+     * 
+     * @return string
+     */
+    public function modifyColumn($table, $column)
+    {
+        $col = key($column); $values = (array) current($column); $query = '';
+        
+        foreach( $values as $value )
+        {
+            $type = preg_match('/(NULL|DEFAULT|CONSTRAINT|EXISTS|UNIQUE|KEY|BIGSERIAL)/i', $value ?? '') ? 'SET' : 'TYPE';
+
+            $query .= 'ALTER TABLE ' . $table . ' ALTER COLUMN ' . $this->buildForgeColumnsSyntax([$col => [$value]], $type) . ';';
+        }
+
+        return $query;
+    }
+
+
+    /**
+     * Rename Column
+     * 
+     * @param string $table
+     * @param array  $column
+     * 
+     * @return string
+     */
+    public function renameColumn($table, $column)
+    { 
+        return 'ALTER TABLE '.$table.' RENAME COLUMN ' . $this->buildForgeColumnsSyntax($column, 'TO') . ';';
+    }
+
+    /**
+     * Add Column
+     * 
+     * @param string $table
+     * @param array  $column
+     * 
+     * @return string
+     */
+    public function addColumn($table, $columns)
+    {
+        return 'ALTER TABLE ' . $table . ' ADD ' . $this->buildForgeColumnsQuery($columns) . ';';
+    }
+
+    /**
+     * Drop index
+     * 
+     * @param string $indexName
+     * @param string $table
+     * 
+     * @return string
+     */
+    public function dropIndex($indexName, $table)
+    {
+        return 'DROP INDEX ' . $indexName . ';';
+    }
+}