private void processMetadata( MetadataList metadata, Dictionary<string, string> headers )
{
StringBuilder listable = new StringBuilder();
StringBuilder nonListable = new StringBuilder();
log.TraceEvent(TraceEventType.Verbose, 0, "Processing " + metadata.Count() + " metadata entries" );
foreach( Metadata meta in metadata ) {
if( meta.Listable ) {
if( listable.Length > 0 ) {
listable.Append( ", " );
}
listable.Append( formatTag( meta ) );
} else {
if( nonListable.Length > 0 ) {
nonListable.Append( ", " );
}
nonListable.Append( formatTag( meta ) );
}
}
// Only set the headers if there's data
if( listable.Length > 0 ) {
headers.Add( "x-emc-listable-meta", listable.ToString() );
}
if( nonListable.Length > 0 ) {
headers.Add( "x-emc-meta", nonListable.ToString() );
}
if (utf8Enabled && !headers.ContainsKey("x-emc-utf8")) {
headers.Add("x-emc-utf8", "true");
}
}
public void testUtf8MetadataFilter() {
String oneByteCharacters = "Hello! ";
String twoByteCharacters = "\u0410\u0411\u0412\u0413"; // Cyrillic letters
String fourByteCharacters = "\ud841\udf0e\ud841\udf31\ud841\udf79\ud843\udc53"; // Chinese symbols
String utf8String = oneByteCharacters + twoByteCharacters + fourByteCharacters;
MetadataList metaList = new MetadataList();
metaList.AddMetadata( new Metadata( "utf8Key", utf8String, false ) );
metaList.AddMetadata( new Metadata( utf8String, "utf8Value", false ) );
ObjectId id = this.esu.CreateObject( null, metaList, null, null );
cleanup.Add( id );
// apply a filter that includes the UTF8 tag
MetadataTags tags = new MetadataTags();
tags.AddTag( new MetadataTag( utf8String, false ) );
metaList = this.esu.GetUserMetadata( id, tags );
Assert.AreEqual( metaList.Count(), 1, "UTF8 filter was not honored" );
Assert.IsNotNull( metaList.GetMetadata( utf8String ), "UTF8 key was not found in filtered results" );
}