public virtual IAttachment Execute(ICommandContext commandContext)
{
if (!(processInstanceId is null))
{
VerifyExecutionParameters(commandContext);
}
IAttachmentEntity attachment = commandContext.AttachmentEntityManager.Create();
attachment.Name = attachmentName;
attachment.ProcessInstanceId = processInstanceId;
attachment.TaskId = taskId;
attachment.Description = attachmentDescription;
attachment.Type = attachmentType;
attachment.Url = url;
attachment.UserId = Authentication.AuthenticatedUser.Id;
attachment.Time = commandContext.ProcessEngineConfiguration.Clock.CurrentTime;
commandContext.AttachmentEntityManager.Insert(attachment, false);
if (content != null)
{
byte[] bytes = IoUtil.ReadInputStream(content, attachmentName);
IByteArrayEntity byteArray = commandContext.ByteArrayEntityManager.Create();
byteArray.Bytes = bytes;
commandContext.ByteArrayEntityManager.Insert(byteArray);
attachment.ContentId = byteArray.Id;
attachment.Content = byteArray;
}
commandContext.HistoryManager.CreateAttachmentComment(taskId, processInstanceId, attachmentName, true);
if (commandContext.ProcessEngineConfiguration.EventDispatcher.Enabled)
{
// Forced to fetch the process-instance to associate the right
// process definition
string processDefinitionId = null;
if (!(attachment.ProcessInstanceId is null))
{
IExecutionEntity process = commandContext.ExecutionEntityManager.FindById <IExecutionEntity>(processInstanceId);
if (process != null)
{
processDefinitionId = process.ProcessDefinitionId;
}
}
commandContext.ProcessEngineConfiguration.EventDispatcher.DispatchEvent(ActivitiEventBuilder.CreateEntityEvent(ActivitiEventType.ENTITY_CREATED, attachment, processInstanceId, processInstanceId, processDefinitionId));
commandContext.ProcessEngineConfiguration.EventDispatcher.DispatchEvent(ActivitiEventBuilder.CreateEntityEvent(ActivitiEventType.ENTITY_INITIALIZED, attachment, processInstanceId, processInstanceId, processDefinitionId));
}
return(attachment);
}
public virtual Stream Execute(ICommandContext commandContext)
{
IAttachmentEntity attachment = commandContext.AttachmentEntityManager.FindById <IAttachmentEntity>(new KeyValuePair <string, object>("id", attachmentId));
string contentId = attachment.ContentId;
if (contentId is null)
{
return(null);
}
IByteArrayEntity byteArray = commandContext.ByteArrayEntityManager.FindById <IByteArrayEntity>(new KeyValuePair <string, object>("id", contentId));
byte[] bytes = byteArray.Bytes;
return(new System.IO.MemoryStream(bytes));
}
public virtual void Delete()
{
if (!deleted && !(id is null))
{
if (entity != null)
{
// if the entity has been loaded already,
// we might as well use the safer optimistic locking delete.
Context.CommandContext.ByteArrayEntityManager.Delete(entity);
}
else
{
Context.CommandContext.ByteArrayEntityManager.DeleteByteArrayById(id);
}
entity = null;
id = null;
deleted = true;
}
}
/// <summary>
///
/// </summary>
public void EnsureInitialized()
{
var ctx = Context.CommandContext;
if (id != null && entity == null)
{
if (ctx == null)
{
if (!(ProcessEngineServiceProvider.Resolve <IProcessEngine>().ProcessEngineConfiguration is ProcessEngineConfigurationImpl pi))
{
return;
}
ctx = pi.CommandContextFactory.CreateCommandContext(new ByteArrayRefCmd(id));
Context.CommandContext = ctx;
}
entity = ctx.ByteArrayEntityManager.FindById <IByteArrayEntity>(new KeyValuePair <string, object>("id", id));
name = entity.Name;
}
}
