Introduction

O2A data is archived. The data structure for archiving is described here. The SENSOR's parameter codes (URNs, Uniform Resource Names), e.g. vessel:polarstern:hydrosweep_ds3 describes the root storage directory for this specific device. This base directory is defined by the metadata description in sensor.awi.de.   Examples for base directory:   vessel:polarstern:hydrosweep_ds3 , towed_systems:loki_10001_02

Subdevices of a base device are described in the sensor urn by adding the sub devices Short Name to the base device URN. E.g. towed_systems:loki_10001_02:microflu-chl_1228. Base device and subdevices are named items for simplicity reasons. Any nesting of items is possible. There is no restriction for nesting.

Examples for different level of nesting:

(type:item:item:item)  vessel:polarstern:tsk1:sbe38

(type:item:item) towed_systems:loki_10001_02:microflu-chl_1228  vessel:polarstern:hydrosweep_ds3

(type:item) towed_systems:loki_10001_02

               /**

                * Returns a {@link Map} if the given {@code path} is a valid path to a file

                * or folder according the the specified syntax of:

                *

                * <ul>

                * <li>{@code platforms/platformType/platform[/device+|/product+]/expedition/exdata/...} The parts

                *   {@code /platform[/device+|/product+]/} have a path/code/urn in sensor.awi.de.</li>

                * <li>{@code platforms/platformType/platform[/device+|/product+]/data/[year/[month/[day/]?]?]?} Year,

                *   month and day are optional, but numeric and valid against ISO yyyy-MM-dd.</li>

                * <li>{@code projects/project/...} may contain metadata.json file for metadata information for

                *   all files in the directory where metadata.json is located, metadata will be inherit to sub-folders</li>

                * </ul>

                *

                * Peters Mail vom 11.06.2016

                *

                * web: Für Daten die im Web dargestellt werden sollen: Mount-Point:

                * /hs/global/ Pickup-Dir.:

                * web/platform/PlatformType/Platform[/Device|/Product]+/[Expedition/exdata]/[year/month/day]/

                *                                                       data/[year/[month/[day]]]/