DatasetNode: A class for a single datatset reference

In thredds: Crawler for Navigating THREDDS Catalogs

A class for a single datatset reference

Description

A direct Dataset representation that subclasses from ThreddsNode

Super class

thredds::ThreddsNode -> DatasetNode

Public fields

name

character, often the filename

dataSize

numeric, size in bytes

date

character, modification date

Methods

Public methods

• DatasetNode$new()

• DatasetNode$GET()

• DatasetNode$get_url()

• DatasetNode$list_access()

• DatasetNode$print()

• DatasetNode$clone()

Inherited methods

• thredds::ThreddsNode$browse()
• thredds::ThreddsNode$children_names()

---

Method new()

initialize an instance of ServiceNode

Usage

DatasetNode$new(x, ...)

Arguments

x

url or xml2::xml_node

...

arguments for superclass initialization

---

Method GET()

Overrides the GET method of the superclass. GET is not permitted

Usage

DatasetNode$GET()

Returns

NULL

---

Method get_url()

Retrieve the relative URL for a dataset.

Usage

DatasetNode$get_url(
  service = c("dap", "opendap", "wms")[1],
  sep = c("/", "")[2],
  ...
)

Arguments

service

character, the service to use. (default 'dap' equivalent to 'opendap') Ignored if ‘urlPath' or 'href' is in the nodes’ attributes.

sep

character, typically "/" or "" (default), used for joined base_url to relative url

...

other arguments for DatasetNode$list_access

Returns

character

---

Method list_access()

list access methods

Usage

DatasetNode$list_access(xpath = build_xpath("access", prefix = self$prefix))

Arguments

xpath

charcater, xpath descriptor

Returns

named list of character vectors or NULL

---

Method print()

print method

Usage

DatasetNode$print(prefix = "")

Arguments

prefix

character, to be printed before each line of output (like spaces)

...

other arguments for superclass

---

Method clone()

The objects of this class are cloneable with this method.

Usage

DatasetNode$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Note

For examples see CatalogNode

thredds documentation built on Sept. 1, 2023, 5:08 p.m.