1 files changed, 103 insertions, 0 deletions
diff --git a/classes/IsisFinder.php b/classes/IsisFinder.php
new file mode 100644
index 0000000..36732b5
--- /dev/null
+++ b/classes/IsisFinder.php
@@ -0,0 +1,103 @@
+<?php
+
+/**
+ * Provides Isis Database search methods.
+ */
+class IsisFinder extends IsisConnector {
+  /**
+   * Find the next repetition of a field.
+   *
+   * @param $entry
+   *   Start entry number to begin the search.
+   *
+   * @param $field
+   *   Field name.
+   *
+   * @return
+   *   Next repetition.
+   */
+  public function nextRepetition($entry = 1, $field) {
+    $entry--;
+
+    // Query database.
+    do {
+      $result = $this->read(++$entry);
+      if ($entry == $entries) {
+        break;
+      }
+    } while (!isset($result[$field]) || count($result[$field]) < 2);
+
+    if (!isset($result[$field]) || count($result[$field]) < 2) {
+      return FALSE;
+    }
+
+    return $result;
+  }
+
+  /**
+   * Find the next occurrence of a field.
+   *
+   * @param $entry
+   *   Start entry number to begin the search.
+   *
+   * @param $field
+   *   Field name.
+   *
+   * @return
+   *   Next occurrence.
+   */
+  public function nextField($entry = 1, $field) {
+    $entry--;
+
+    // Query database.
+    do {
+      $result = $this->read(++$entry);
+      if ($entry == $entries) {
+        break;
+      }
+    } while (!isset($result[$field]));
+
+    if (!isset($result[$field])) {
+      return FALSE;
+    }
+
+    return $result;
+  }
+
+  /**
+   * Find the next occurrence of a subfield.
+   *
+   * @param $entry
+   *   Start entry number to begin the search.
+   *
+   * @param $field
+   *   Field name.
+   *
+   * @param $subfield
+   *   Subfield name.
+   *
+   * @return
+   *   Next occurrence.
+   *
+   * @todo
+   *   The subfield might be in any now and not just
+   *   in the first one.
+   */
+  public function nextSubfield($entry = 1, $field, $subfield) {
+    $entry--;
+
+    // Query database.
+    do {
+      $result = $this->read(++$entry);
+      if ($entry == $entries) {
+        break;
+      }
+    } while (!isset($result[$field][0][$subfield]));
+
+    if (!isset($result[$field][0][$subfield])) {
+      return FALSE;
+    }
+
+    return $result;
+  }
+}