How do I get a freshly updated value (i.e. not the cached value) using entity_metadata_wrapper?

Question

In my code I am inserting a new value into the database directly using db_insert (i.e. inserting an entirely new row). The type of field, however, already exists in Drupal which is called "field_data_field_email_address". Previous to the insert call no value existed in the database which is associated with an entity.

Later in code I am relying on entity_metadata_wrapper to retrieve the values associated with the entity. The problem is that the wrapper doesn't retrieve the most recently inserted value but instead returns nothing. Yet when I look in the database table I can clearly see the existence of the newly inserted value.

As you may have already guessed I narrowed the issue down to a caching issue because if I clear the Drupal cache the wrapper returns the newly created value just fine.

My question is this: How can I force the entity_metadata_wrapper call to not retrieve the cached version but refresh and return to me the actual current values that exist in the database. I need my wrapper to represent the freshest data and not the cached version.

Thank you in advance!

Answer 1

The cache can actually be cleared using the entity_load function and passing a value of true for $reset which will clear the cache and update future references to it including wrappers retrieved from entity_metadata_wrapper:

entity_load("node", array($nid), null, true);

Answer 2

For nodes, I found this snippet on hook_node insert helpful:

entity_get_controller('node')->resetCache(array($w->getIdentifier()));