/**
 * Domain Metadata Action Sample
 * The DomainMetadata operation returns some domain metadata values, such as the
 * number of items, attribute names and attribute values along with their sizes.  
 * @param Amazon_SimpleDB_Interface $service instance of Amazon_SimpleDB_Interface
 * @param mixed $request Amazon_SimpleDB_Model_DomainMetadata or array of parameters
 */
function invokeDomainMetadata(Amazon_SimpleDB_Interface $service, $request)
{
    try {
        $response = $service->domainMetadata($request);
        echo "Service Response\n";
        echo "=============================================================================\n";
        echo "        DomainMetadataResponse\n";
        if ($response->isSetDomainMetadataResult()) {
            echo "            DomainMetadataResult\n";
            $domainMetadataResult = $response->getDomainMetadataResult();
            if ($domainMetadataResult->isSetItemCount()) {
                echo "                ItemCount\n";
                echo "                    " . $domainMetadataResult->getItemCount() . "\n";
            }
            if ($domainMetadataResult->isSetItemNamesSizeBytes()) {
                echo "                ItemNamesSizeBytes\n";
                echo "                    " . $domainMetadataResult->getItemNamesSizeBytes() . "\n";
            }
            if ($domainMetadataResult->isSetAttributeNameCount()) {
                echo "                AttributeNameCount\n";
                echo "                    " . $domainMetadataResult->getAttributeNameCount() . "\n";
            }
            if ($domainMetadataResult->isSetAttributeNamesSizeBytes()) {
                echo "                AttributeNamesSizeBytes\n";
                echo "                    " . $domainMetadataResult->getAttributeNamesSizeBytes() . "\n";
            }
            if ($domainMetadataResult->isSetAttributeValueCount()) {
                echo "                AttributeValueCount\n";
                echo "                    " . $domainMetadataResult->getAttributeValueCount() . "\n";
            }
            if ($domainMetadataResult->isSetAttributeValuesSizeBytes()) {
                echo "                AttributeValuesSizeBytes\n";
                echo "                    " . $domainMetadataResult->getAttributeValuesSizeBytes() . "\n";
            }
            if ($domainMetadataResult->isSetTimestamp()) {
                echo "                Timestamp\n";
                echo "                    " . $domainMetadataResult->getTimestamp() . "\n";
            }
        }
        if ($response->isSetResponseMetadata()) {
            echo "            ResponseMetadata\n";
            $responseMetadata = $response->getResponseMetadata();
            if ($responseMetadata->isSetRequestId()) {
                echo "                RequestId\n";
                echo "                    " . $responseMetadata->getRequestId() . "\n";
            }
            if ($responseMetadata->isSetBoxUsage()) {
                echo "                BoxUsage\n";
                echo "                    " . $responseMetadata->getBoxUsage() . "\n";
            }
        }
    } catch (Amazon_SimpleDB_Exception $ex) {
        echo "Caught Exception: " . $ex->getMessage() . "\n";
        echo "Response Status Code: " . $ex->getStatusCode() . "\n";
        echo "Error Code: " . $ex->getErrorCode() . "\n";
        echo "Error Type: " . $ex->getErrorType() . "\n";
        echo "Request ID: " . $ex->getRequestId() . "\n";
        echo "XML: " . $ex->getXML() . "\n";
    }
}