flush

[m6w6/pq-gateway] / lib / pq / Gateway / Rowset.php

diff --git a/lib/pq/Gateway/Rowset.php b/lib/pq/Gateway/Rowset.php
index 4cf062f6f149a1c1ffbd37d956bc01c3f5dc2d0e..2527b029a1f629cad222161c05e73cf84540a216 100644 (file)
--- a/lib/pq/Gateway/Rowset.php
+++ b/lib/pq/Gateway/Rowset.php
@@ -2,35 +2,170 @@
 
 namespace pq\Gateway;
 
-class Rowset implements \IteratorAggregate
+class Rowset implements \SeekableIterator, \Countable, \JsonSerializable
 {
        /**
         * @var \pq\Gateway\Table
         */
        protected $table;
        
+       /**
+        * @var int
+        */
+       protected $index = 0;
+       
        /**
         * @var array
         */
        protected $rows;
        
+       /**
+        * @var string
+        */
+       protected $row;
+       
        /**
         * @param \pq\Gateway\Table $table
         * @param \pq\Result $result
         */
-       function __construct(Table $table, \pq\Result $result, $rowClass = "\\pq\\Gateway\\Row") {
+       function __construct(Table $table, \pq\Result $result, $row = "\\pq\\Gateway\\Row") {
                $this->table = $table;
-               while (($row = $result->fetchRow(\pq\Result::FETCH_ASSOC))) {
-                       $this->rows[] = new $rowClass($this->table, $row);
+               $this->row   = $row;
+               
+               $this->hydrate($result);
+       }
+       
+       /**
+        * Copy constructor
+        * @param \pq\Result $result
+        * @return \pq\Gateway\Rowset
+        */
+       function __invoke(\pq\Result $result) {
+               $that = clone $this;
+               $that->hydrate($result);
+               return $that;
+       }
+       
+       /**
+        * 
+        * @param \pq\Result $result
+        * @return array
+        */
+       protected function hydrate(\pq\Result $result) {
+               $this->index = 0;
+               $this->rows  = array();
+               $row = $this->row;
+               
+               if (is_callable($row)) {
+                       while (($data = $result->fetchRow(\pq\Result::FETCH_ASSOC))) {
+                               $this->rows[] = $row($data);
+                       }
+               } else {
+                       while (($data = $result->fetchRow(\pq\Result::FETCH_ASSOC))) {
+                               $this->rows[] = new $row($this->table, $data);
+                       }
+               }
+               return $this;
+       }
+       
+       /**
+        * @return \pq\Gateway\Table
+        */
+       function getTable() {
+               return $this->table;
+       }
+       
+       function create() {
+               array_map(function ($row) {
+                       $row->create();
+               }, $this->rows);
+               return $this;
+       }
+       
+       function update() {
+               array_map(function ($row) {
+                       $row->update();
+               }, $this->rows);
+               return $this;
+       }
+       
+       function delete() {
+               array_map(function ($row) {
+                       $row->delete();
+               }, $this->rows);
+               return $this;           
+       }
+       
+       /**
+        * @implements JsonSerilaizable
+        */
+       function jsonSerialize() {
+               return array_map(function($row) {
+                       return $row->jsonSerialize();
+               }, $this->rows);
+       }
+       
+       /**
+        * @implements \Iterator
+        */
+       function rewind() {
+               $this->index = 0;
+       }
+       /**
+        * @implements \Iterator
+        */
+       function next() {
+               ++$this->index;
+       }
+       /**
+        * @implements \Iterator
+        * @return bool
+        */
+       function valid() {
+               return $this->index < count($this->rows);
+       }
+       /**
+        * @implements \Iterator
+        * @return \pq\Gateway\Row
+        */
+       function current() {
+               return $this->rows[$this->index];
+       }
+       /**
+        * @implements \Iterator
+        * @return int
+        */
+       function key() {
+               return $this->index;
+       }
+       
+       /**
+        * @implements SeekableIterator
+        * @param mixed $pos
+        */
+       function seek($pos) {
+               /* only index for now */
+               $this->index = $pos;
+      
+               if (!$this->valid()) {
+                       throw new \OutOfBoundsException("Invalid seek position ($pos)");
                }
        }
        
        /**
-        * @implements \IteratorAggregate
-        * @return \pq\Gateway\ArrayIterator
+        * @implements \Countable
+        * @return int
+        */
+       function count() {
+               return count($this->rows);
+       }
+       
+       /**
+        * Get the rows of this rowset
+        * @return array
         */
-       function getIterator() {
-               return new \ArrayIterator($this->rows);
+       function getRows() {
+               return $this->rows;
        }
        
        /**