public ClearQuestAttachmentItem(
OAdEntity aHostRecord,
OAdAttachmentField aHostField,
OAdAttachment aAttachment,
ClearQuestConnectionConfig connectionConfiguration)
{
// gather info to query for the record
EntityDefName = CQWrapper.GetEntityDefName(aHostRecord);
EntityDispName = CQWrapper.GetEntityDisplayName(aHostRecord);
// gather info to query for attachment field
FieldName = CQWrapper.GetAttachmentFieldName(aHostField);
string name;
string comment;
string dispName;
int fileSize;
CQWrapper.GetAttachmentMetadata(aAttachment,
out name,
out comment,
out dispName,
out fileSize);
Name = name;
Comment = comment;
DisplayName = dispName;
Length = (long)fileSize; // fileSize returned by CQ API is in bytes
ConnectionConfiguration = connectionConfiguration;
}
private bool AttachmentExists(
OAdEntity entity,
string attName,
string attComment,
string lengthStr)
{
OAdAttachmentFields aAttachmentFields = CQWrapper.GetAttachmentFields(entity);
for (int aAttachmentFieldsIndex = 0;
aAttachmentFieldsIndex < CQWrapper.AttachmentsFieldsCount(aAttachmentFields);
aAttachmentFieldsIndex++)
{
object ob = (object)aAttachmentFieldsIndex;
OAdAttachmentField aAttachmentField = CQWrapper.AttachmentsFieldsItem(aAttachmentFields, ref ob);
// process all attachments
OAdAttachments attachments = CQWrapper.GetAttachments(aAttachmentField);
for (int attachmentIndex = 0;
attachmentIndex < CQWrapper.AttachmentsCount(attachments);
attachmentIndex++)
{
object obIndex = (object)attachmentIndex;
OAdAttachment aAttachment = CQWrapper.AttachmentsItem(attachments, ref obIndex);
string name;
string comment;
string dispName;
int fileSize;
CQWrapper.GetAttachmentMetadata(aAttachment,
out name,
out comment,
out dispName,
out fileSize);
if (attName.Equals(name) && attComment.Equals(comment) && long.Parse(lengthStr).Equals((long)fileSize))
{
return(true);
}
}
}
return(false);
}
public void Download(string localPath)
{
byte[] metadataHash = HashAttachmentMetadata(Name, Comment, DisplayName, Length);
if (null == CQSession)
{
throw new InvalidOperationException("CQSession == NULL");
}
// [teyang] TODO: validation on localPath
if (File.Exists(localPath))
{
File.Delete(localPath);
}
OAdEntity aRecord = CQWrapper.GetEntity(CQSession, EntityDefName, EntityDispName);
OAdAttachmentFields aAllAttFields = CQWrapper.GetAttachmentFields(aRecord);
bool attachmentFound = false;
for (int attFieldsIndex = 0;
attFieldsIndex < CQWrapper.AttachmentsFieldsCount(aAllAttFields);
attFieldsIndex++)
{
object ob = (object)attFieldsIndex;
OAdAttachmentField aAttField = CQWrapper.AttachmentsFieldsItem(aAllAttFields, ref ob);
string fieldName = CQWrapper.GetAttachmentFieldName(aAttField);
if (!CQStringComparer.FieldName.Equals(fieldName, this.FieldName))
{
// not the hosting attachment field, try next one
continue;
}
// attachment field is found, now look for the attachment
OAdAttachments aAttachments = CQWrapper.GetAttachments(aAttField);
OAdAttachment aAttachment = null;
for (int attachmentIndex = 0;
attachmentIndex < CQWrapper.AttachmentsCount(aAttachments);
attachmentIndex++)
{
object obIndex = (object)attachmentIndex;
aAttachment = CQWrapper.AttachmentsItem(aAttachments, ref obIndex);
string name;
string comment;
string dispName;
int fileSize;
CQWrapper.GetAttachmentMetadata(aAttachment, out name, out comment, out dispName, out fileSize);
byte[] hash = HashAttachmentMetadata(name, comment, dispName, (long)fileSize);
if (HashProducer.CompareMD5(metadataHash, hash) == 0)
{
attachmentFound = true;
break;
}
}
if (attachmentFound)
{
Debug.Assert(null != aAttachment, "null == aAttachment");
CQWrapper.LoadAttachment(aAttachment, localPath);
}
// we've checked the host att field already, no need to proceed
break;
}
if (!attachmentFound)
{
// [teyang] TODO: typed exception, AttachmentNotFound conflict handling
throw new Exception(string.Format("attachment '{0}' is not found", Name));
}
}