1 files changed, 78 insertions, 4 deletions

diff --git a/classes/IsisConnector.php b/classes/IsisConnector.php
index 6052454..a53c6d6 100644
--- a/classes/IsisConnector.php
+++ b/classes/IsisConnector.php
@@ -1,5 +1,9 @@
 <?php
 
+/**
+ * IsisConnector: provides an easy interface to connect an
+ * application with Cinisis.
+ */
 class IsisConnector {
   /**
    * Constructor.
@@ -19,6 +23,12 @@ class IsisConnector {
 
   /**
    * Alias to $isis->db->read().
+   *
+   * @param $row
+   *   Row number.
+   *
+   * @return
+   *   Resulting data.
    */
   public function read($row) {
     // Always store the last result.
@@ -30,6 +40,15 @@ class IsisConnector {
 
   /**
    * Get the value of a given field.
+   *
+   * @param $field
+   *   Field number.
+   *
+   * @param $row
+   *   Optional row number if repetitive field.
+   *
+   * @return
+   *   Field data.
    */
   public function getField($field, $row = 0) {
     if (isset($this->result[$field['name']][$row]['field'])) {
@@ -39,6 +58,15 @@ class IsisConnector {
 
   /**
    * Get the value of a given subfield.
+   *
+   * @param $field
+   *   Field name.
+   *
+   * @param $subfield
+   *   Subfield name.
+   *
+   * @return
+   *   Subfield data.
    */
   public function getSubfield($field, $subfield, $row = 0) {
     if (isset($this->result[$field['name']][$row]['subfields'][$subfield])) {
@@ -48,6 +76,9 @@ class IsisConnector {
 
   /**
    * Get the list of subfields from a given field.
+   *
+   * @param $field
+   *   Subfield name.
    */
   public function getSubfields($field) {
     if (isset($field['subfields'])) {
@@ -57,8 +88,11 @@ class IsisConnector {
   }
 
   /**
-   * Determine which model field an ISIS db field should
-   * be mapped to.
+   * Determine which model field an ISIS db field should be mapped to.
+   * When importing an ISIS database to another system, a mapping
+   * provided in the database schema can be used to put the originating
+   * entries (fields and subfields) in the right place at the destination
+   * database.
    *
    * Map format:
    *
@@ -82,8 +116,18 @@ class IsisConnector {
    *     field: title
    *     subfields:
    *       a: subtitle
-   *  
-   * @todo Convert field and subfield names to valid field names.
+   * 
+   * @param $field
+   *   Field number.
+   *
+   * @param $subfield
+   *   Subfield name. 
+   *
+   * @retrn
+   *   A map destination to the field or subfield.
+   * 
+   * @todo
+   *   Convert field and subfield names to valid field names.
    */
   public function getMap($field, $subfield = NULL) {
     if ($subfield == NULL) {
@@ -114,6 +158,12 @@ class IsisConnector {
 
   /**
    * Get the mapping type of a given field.
+   *
+   * @param $field
+   *   Field number.
+   *
+   * @return
+   *   The mapping type.
    */
   public function getMapType($field) {
     return isset($field['map']['type']) ? $field['map']['type'] : FALSE;
@@ -121,6 +171,12 @@ class IsisConnector {
 
   /**
    * Check on an ISIS schema whether a field has a map.
+   *
+   * @param $field
+   *   Field number.
+   *
+   * @return
+   *   TRUE if field has a map, FALSE otherwise.
    */
   public function fieldHasMap($field) {
     if (isset($field['map']['field'])) {
@@ -131,6 +187,15 @@ class IsisConnector {
 
   /**
    * Check on an ISIS schema whether a subfield has a map.
+   *
+   * @param $field
+   *   Field number.
+   *
+   * @param $subfield
+   *   Subfield name.
+   *
+   * @return
+   *   TRUE if subfield has a map, FALSE otherwise.
    */
   public function subfieldHasMap($field, $subfield) {
     if (isset($field['map']['subfields'])) {
@@ -144,6 +209,15 @@ class IsisConnector {
 
   /**
    * Get the key of a subfield entry.
+   *
+   * @param $field
+   *   Field number.
+   *
+   * @param $subfield
+   *   Subfield name.
+   *
+   * @return
+   *   Subfield keys.
    */
   public function getSubfieldKey($field, $subfield) {
     $keys = array_flip($field['subfields']);