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-rw-r--r--engine/lib/entities.php34
1 files changed, 34 insertions, 0 deletions
diff --git a/engine/lib/entities.php b/engine/lib/entities.php
index b72eb6ff0..55a675154 100644
--- a/engine/lib/entities.php
+++ b/engine/lib/entities.php
@@ -63,6 +63,13 @@
*/
protected $temp_annotations;
+
+ /**
+ * Volatile data structure for this object, allows for storage of data
+ * in-memory that isn't sync'd back to the metadata table.
+ */
+ protected $volatile;
+
/**
* Initialise the attributes array.
* This is vital to distinguish between metadata and base parameters.
@@ -79,6 +86,7 @@
if (!is_array($this->attributes)) $this->attributes = array();
if (!is_array($this->temp_metadata)) $this->temp_metadata = array();
if (!is_array($this->temp_annotations)) $this->temp_annotations = array();
+ if (!is_array($this->volatile)) $this->volatile = array();
$this->attributes['guid'] = "";
$this->attributes['type'] = "";
@@ -174,6 +182,31 @@
return true;
}
+
+ /**
+ * Get a piece of volatile (non-persisted) data on this entity
+ */
+ public function getVolatileData($name) {
+ if (!is_array($this->volatile)) $this->volatile = array();
+
+ if (array_key_exists($name, $this->volatile)) {
+ return $this->volatile[$name];
+ } else {
+ return NULL;
+ }
+ }
+
+
+ /**
+ * Get a piece of volatile (non-persisted) data on this entity
+ */
+ public function setVolatileData($name, $value) {
+ if (!is_array($this->volatile)) $this->volatile = array();
+
+ $this->volatile[$name] = $value;
+ }
+
+
/**
* Get a given piece of metadata.
*
@@ -686,6 +719,7 @@
{
// Create the array if necessary - all subclasses should test before creating
if (!is_array($this->attributes)) $this->attributes = array();
+ if (!is_array($this->volatile)) $this->volatile = array();
// Now put these into the attributes array as core values
$objarray = (array) $row;