source("./R/util.R")
#' Subcollection
-#'
+#'
#' Subcollection class represents a folder inside Arvados collection.
#' It is essentially a composite of arvadosFiles and other subcollections.
-#'
+#'
#' @section Usage:
#' \preformatted{subcollection = Subcollection$new(name)}
#'
#' \describe{
#' \item{name}{Name of the subcollection.}
#' }
-#'
+#'
#' @section Methods:
#' \describe{
#' \item{getName()}{Returns name of the subcollection.}
#' \item{get(relativePath)}{If relativePath is valid, returns ArvadosFile or Subcollection specified by relativePath, else returns NULL.}
#' \item{getFileListing()}{Returns subcollections file content as character vector.}
#' \item{getSizeInBytes()}{Returns subcollections content size in bytes.}
-#' \item{move(newLocation)}{Moves subcollection to a new location inside collection.}
+#' \item{move(destination)}{Moves subcollection to a new location inside collection.}
+#' \item{copy(destination)}{Copies subcollection to a new location inside collection.}
#' }
#'
#' @name Subcollection
#' myFolder$remove("myFile")
#'
#' myFolder$move("newLocation/myFolder")
+#' myFolder$copy("newLocation/myFolder")
#' }
NULL
},
getName = function() private$name,
-
+
getRelativePath = function()
{
relativePath <- c(private$name)
if("ArvadosFile" %in% class(content) ||
"Subcollection" %in% class(content))
{
+ if(!is.null(content$getCollection()))
+ stop("Content already belongs to a collection.")
+
if(content$getName() == "")
stop("Content has invalid name.")
"or Subcollection with same name."))
if(!is.null(private$collection))
- {
+ {
if(self$getRelativePath() != "")
contentPath <- paste0(self$getRelativePath(),
"/", content$getFileListing())
return(sum(fileSizes))
},
- move = function(newLocation)
+ move = function(destination)
{
if(is.null(private$collection))
- stop("Subcollection doesn't belong to any collection")
+ stop("Subcollection doesn't belong to any collection.")
- newLocation <- trimFromEnd(newLocation, "/")
- nameAndPath <- splitToPathAndName(newLocation)
+ destination <- trimFromEnd(destination, "/")
+ nameAndPath <- splitToPathAndName(destination)
newParent <- private$collection$get(nameAndPath$path)
if(is.null(newParent))
- {
- stop("Unable to get destination subcollection")
- }
+ stop("Unable to get destination subcollection.")
childWithSameName <- newParent$get(nameAndPath$name)
private$collection$uuid)
private$dettachFromCurrentParent()
- private$attachToNewParent(newParent)
+ private$attachToNewParent(self, newParent)
+ private$parent <- newParent
private$name <- nameAndPath$name
- "Content moved successfully."
+ self
+ },
+
+ copy = function(destination)
+ {
+ if(is.null(private$collection))
+ stop("Subcollection doesn't belong to any collection.")
+
+ destination <- trimFromEnd(destination, "/")
+ nameAndPath <- splitToPathAndName(destination)
+
+ newParent <- private$collection$get(nameAndPath$path)
+
+ if(is.null(newParent) || !("Subcollection" %in% class(newParent)))
+ stop("Unable to get destination subcollection.")
+
+ childWithSameName <- newParent$get(nameAndPath$name)
+
+ if(!is.null(childWithSameName))
+ stop("Destination already contains content with same name.")
+
+ REST <- private$collection$getRESTService()
+ REST$copy(self$getRelativePath(),
+ paste0(newParent$getRelativePath(), "/", nameAndPath$name),
+ private$collection$uuid)
+
+ newContent <- self$duplicate(nameAndPath$name)
+ newContent$setCollection(self$getCollection(), setRecursively = TRUE)
+ newContent$setParent(newParent)
+ private$attachToNewParent(newContent, newParent)
+
+ newContent
+ },
+
+ duplicate = function(newName = NULL)
+ {
+ name <- if(!is.null(newName)) newName else private$name
+ root <- Subcollection$new(name)
+ for(child in private$children)
+ root$add(child$duplicate())
+
+ root
},
get = function(name)
}
},
- attachToNewParent = function(newParent)
+ attachToNewParent = function(content, newParent)
{
- #Note: We temporary set parents collection to NULL. This will ensure that
- # add method doesn't post file on REST.
+ # We temporary set parents collection to NULL. This will ensure that
+ # add method doesn't post this subcollection to REST.
+ # We also need to set content's collection to NULL because
+ # add method throws exception if we try to add content that already
+ # belongs to a collection.
parentsCollection <- newParent$getCollection()
+ content$setCollection(NULL, setRecursively = FALSE)
newParent$setCollection(NULL, setRecursively = FALSE)
-
- newParent$add(self)
-
+ newParent$add(content)
+ content$setCollection(parentsCollection, setRecursively = FALSE)
newParent$setCollection(parentsCollection, setRecursively = FALSE)
-
- private$parent <- newParent
},
dettachFromCurrentParent = function()
{
- #Note: We temporary set parents collection to NULL. This will ensure that
- # remove method doesn't remove this subcollection from REST.
+ # We temporary set parents collection to NULL. This will ensure that
+ # remove method doesn't remove this subcollection from REST.
parent <- private$parent
parentsCollection <- parent$getCollection()
parent$setCollection(NULL, setRecursively = FALSE)
-
parent$remove(private$name)
-
parent$setCollection(parentsCollection, setRecursively = FALSE)
},
content
}
),
-
+
cloneable = FALSE
)
#'
#' @param x Instance of Subcollection class
#' @param ... Optional arguments.
-#' @export
+#' @export
print.Subcollection = function(x, ...)
{
collection <- NULL