From 1d84217ed97be237d2696c85a997c9e52114b984 Mon Sep 17 00:00:00 2001
From: Silvio <silvio@devlet.com.br>
Date: Mon, 19 Jul 2010 18:04:40 -0300
Subject: Lots of API changes at IsisConnector and iterators
---
classes/iterators/IsisItemIterator.php | 85 ++++++++++++++++++++++++++++++++++
1 file changed, 85 insertions(+)
create mode 100644 classes/iterators/IsisItemIterator.php
(limited to 'classes/iterators/IsisItemIterator.php')
diff --git a/classes/iterators/IsisItemIterator.php b/classes/iterators/IsisItemIterator.php
new file mode 100644
index 0000000..5c28b2c
--- /dev/null
+++ b/classes/iterators/IsisItemIterator.php
@@ -0,0 +1,85 @@
+<?php
+
+/**
+ * Isis field iterator. Iterates over a field for each result row.
+ */
+class IsisItemIterator implements Iterator
+{
+ private $keys;
+ private $fieldset;
+ private $row = 0;
+ private $rows = 0;
+ private $item = 0;
+ private $items = 0;
+
+ /**
+ * Constructor.
+ *
+ * @param $class
+ * Instance of IsisConnector or child class.
+ *
+ * @param $field
+ * Field to iterate over.
+ *
+ * @param $main
+ * Control to which item the main field should be mapped to.
+ * By default no mapping is made.
+ */
+ public function __construct($class, $field, $main = false) {
+ $this->class = $class;
+ $this->field = $field;
+ $this->rows = $class->getRows($field);
+
+ // Handle subfields
+ $this->fieldset = $class->getSubfieldList($field);
+ $this->keys = array_keys($this->fieldset);
+ $this->items = count($this->keys);
+
+ // Sum up main item
+ $this->fieldset[] = $class->getMainItem($field);
+ $this->keys[] = $class->getMainItemName($field);
+ $this->items++;
+ }
+
+ /**
+ * Rewind the Iterator to the first element.
+ */
+ function rewind() {
+ $this->row = 0;
+ $this->item = 0;
+ }
+
+ /**
+ * Return the key of the current element.
+ */
+ function key() {
+ return $this->row;
+ }
+
+ /**
+ * Return the current element.
+ */
+ function current() {
+ return $this->fieldset[$this->keys[$this->item]];
+ }
+
+ /**
+ * Move forward to next element.
+ */
+ function next() {
+ if ($this->item >= $this->items) {
+ $this->item = 0;
+ ++$this->row;
+ }
+ else {
+ ++$this->item;
+ }
+ }
+
+ /**
+ * Check if there is a current element after calls to rewind() or next().
+ */
+ function valid() {
+ return $this->row <= $this->rows;
+ }
+}
--
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