/**
* Update entity by adding or updating properties
*
* @param string $tableName Table name
* @param Microsoft_WindowsAzure_Storage_TableEntity $entity Entity to update
* @param boolean $verifyEtag Verify etag of the entity (used for concurrency)
* @param array $properties Properties to merge. All properties will be used when omitted.
* @throws Microsoft_WindowsAzure_Exception
*/
public function mergeEntity($tableName = '', Microsoft_WindowsAzure_Storage_TableEntity $entity = null, $verifyEtag = false, $properties = array())
{
$mergeEntity = null;
if (is_array($properties) && count($properties) > 0) {
// Build a new object
$mergeEntity = new Microsoft_WindowsAzure_Storage_DynamicTableEntity($entity->getPartitionKey(), $entity->getRowKey());
// Keep only values mentioned in $properties
$azureValues = $entity->getAzureValues();
foreach ($azureValues as $key => $value) {
if (in_array($value->Name, $properties)) {
$mergeEntity->setAzureProperty($value->Name, $value->Value, $value->Type);
}
}
} else {
$mergeEntity = $entity;
}
// Ensure entity timestamp matches updated timestamp
$entity->setTimestamp(new DateTime());
return $this->_changeEntity(Microsoft_Http_Client::MERGE, $tableName, $mergeEntity, $verifyEtag);
}
