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-rw-r--r--engine/lib/export.php43
1 files changed, 43 insertions, 0 deletions
diff --git a/engine/lib/export.php b/engine/lib/export.php
index e9129e3a3..6e9b1c495 100644
--- a/engine/lib/export.php
+++ b/engine/lib/export.php
@@ -222,6 +222,49 @@
protected function getTagName() { return "relationship"; }
}
+ /** Relationship verb mapping */
+ $ODD_RELATIONSHIP_VERBS = array();
+
+ /**
+ * This function provides a mapping between entity relationships and ODD relationship verbs.
+ * @param string $relationship The relationship as stored in the database, eg "friend" or "member of"
+ * @param string $verb The verb, eg "friends" or "joins"
+ */
+ function register_odd_relationship_mapping($relationship, $verb)
+ {
+ global $ODD_RELATIONSHIP_VERBS;
+
+ $ODD_RELATIONSHIP_VERBS[$relationship] = $verb;
+ }
+
+ /**
+ * Return a mapping for relationship to a pre-registered ODD verb, or false.
+ * @param string $relationship The relationship
+ */
+ function get_verb_from_relationship($relationship)
+ {
+ global $ODD_RELATIONSHIP_VERBS;
+
+ if (isset($ODD_RELATIONSHIP_VERBS[$relationship]))
+ return $ODD_RELATIONSHIP_VERBS[$relationship];
+
+ return false;
+ }
+
+ /**
+ * Return the relationship registered with a given verb, or false.
+ * @param string $verb The verb.
+ */
+ function get_relationship_from_verb($verb)
+ {
+ global $ODD_RELATIONSHIP_VERBS;
+
+ foreach ($ODD_RELATIONSHIP_VERBS as $k => $v)
+ if ($v == $verb) return $k;
+
+ return false;
+ }
+
/**
* Generate a UUID from a given GUID.
*