1 files changed, 62 insertions, 0 deletions
diff --git a/classes/IsisMethodIterator.php b/classes/IsisMethodIterator.php
new file mode 100644
index 0000000..0cb7dd4
--- /dev/null
+++ b/classes/IsisMethodIterator.php
@@ -0,0 +1,62 @@
+<?php
+
+/**
+ * Iterates over all callable methods for database mapping.
+ */
+class IsisMethodIterator implements Iterator
+{
+  private $total = 0;
+  private $class;
+  private $keys;
+
+  /**
+   * Constructor.
+   *
+   * @param $class
+   *   Instance of IsisConnector or child class.
+   */ 
+  public function __construct($class) {
+    $this->class = $class;
+    $this->total = count($class->fields);
+    $this->keys  = array_keys($class->fields);
+  }
+
+  /**
+   * Rewind the Iterator to the first element.
+   */
+  function rewind() {
+    $this->position = 0;
+  }
+
+  /**
+   * Return the key of the current element.
+   */
+  function key() {
+    $type = $this->class->getMapType($this->current());
+    return $this->class->methodName($type);
+  }
+
+  /**
+   * Return the current element.
+   */
+  function current() {
+    return $this->class->fields[$this->keys[$this->position]];
+  }
+
+  /**
+   * Move forward to next element.
+   */
+  function next() {
+    do {
+      ++$this->position;
+    }
+    while (!is_callable(array($this->class, $this->key())) && $this->valid());
+  }
+
+  /**
+   * Check if there is a current element after calls to rewind() or next().
+   */
+  function valid() {
+    return $this->position <= $this->total;
+  }  
+}