VStore.VStoreBackend (nge-platform-common 0.2.6 API)

Enclosing class:: VStore

public static interface VStore.VStoreBackend

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default AsyncTask<java.lang.Boolean>`	`createIfAbsent(java.lang.String path, byte[] completeValue)`	Atomically publishes a complete value only if no target entry exists.
`AsyncTask<java.lang.Void>`	`delete(java.lang.String path)`
`AsyncTask<java.lang.Boolean>`	`exists(java.lang.String path)`
`AsyncTask<java.util.List<java.lang.String>>`	`listAll()`
`AsyncTask<java.io.InputStream>`	`read(java.lang.String path)`
`AsyncTask<java.io.OutputStream>`	`write(java.lang.String path)`

- Method Detail
  - read
```
AsyncTask<java.io.InputStream> read(java.lang.String path)
```
  - write
```
AsyncTask<java.io.OutputStream> write(java.lang.String path)
```
  - createIfAbsent
```
default AsyncTask<java.lang.Boolean> createIfAbsent(java.lang.String path,
                                                    byte[] completeValue)
```
    Atomically publishes a complete value only if no target entry exists. The input remains owned by the caller until the returned private task settles; implementations must not retain it afterwards. Create-capable backends must return a task that supports AsyncTask.observeCompletion(java.util.function.Consumer<T>, java.util.function.Consumer<java.lang.Throwable>) so completion can be forwarded without executor submission. Unsupported backends must fail, never emulate exists-then-write.
  - exists
```
AsyncTask<java.lang.Boolean> exists(java.lang.String path)
```
  - delete
```
AsyncTask<java.lang.Void> delete(java.lang.String path)
```
  - listAll
```
AsyncTask<java.util.List<java.lang.String>> listAll()
```