DefaultModuleDataService (VirtualDataSet API)

java.lang.Object
- io.virtdata.services.DefaultModuleDataService

All Implemented Interfaces:

ModuleDataService
```
public class DefaultModuleDataService
extends java.lang.Object
implements ModuleDataService
```
This class needs to be held in the module for which it will return data, so that local data sources within that module can be resolve relative to the service endpoint itself. In order to support historic path names that users have become familiar with, such as "/data", this data service will use that as a default search path. Since the adoption of JPMS in Virtdata, however, the base path "/MODULE-DATA" is used, since this allows to bypass the unique naming requirements of module elements, while at the same time allowing for this path to be instanced as a per-module namespace. Thus, some files are moved from "/data" to "/MODULE-DATA", and in these cases, both paths must be checked when either of them is specified. In order to steer users towards canonically-named resources, the following conditions must be detected and messaged in logs appropriately:
- Data is found under "/data/..." when "/MODULE-DATA/..." was specified. In this case, the user should be warned about the fact that
- Data was found under "/MODULE-DATA/..." when "/data/..." was specified
The next change to this loader will be to allow for explicit selection of resource locations, or specific ordering of search paths.
- MODULE-DATA - Only module data will be considered when searching this location.
- CLASS-PATH:...
- FILE-SYSTEM:...
- URI:...

- Field Summary
  - Fields inherited from interface io.virtdata.services.ModuleDataService
    DATAPATH, DEPRECATED_PATH
- Constructor Summary
  
  Constructors
  Constructor Description
  
  DefaultModuleDataService()
- Method Summary
  
  Modifier and Type Method Description
  
  java.io.InputStream getInputStream(java.nio.file.Path resourcePath, java.nio.file.Path... searchIn)
  
  java.lang.String toString()
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail
- DefaultModuleDataService
```
public DefaultModuleDataService()
```

Method Detail

getInputStream

public java.io.InputStream getInputStream(java.nio.file.Path resourcePath,
                                          java.nio.file.Path... searchIn)

Specified by:: getInputStream in interface ModuleDataService

toString
```
public java.lang.String toString()
```
Overrides:

toString in class java.lang.Object