Package org.sensorhub.api.datastore.resource

Class EmptyResourceStore<K extends Comparable<? super K>,V extends IResource,VF extends IResourceStore.ResourceField,F extends ResourceFilter<? super V>>

java.lang.Object

org.sensorhub.impl.datastore.ReadOnlyDataStore<K,V,VF,Q>

org.sensorhub.impl.datastore.EmptyDataStore<K,V,VF,F>

org.sensorhub.api.datastore.resource.EmptyResourceStore<K,V,VF,F>

Type Parameters:

K - Key type

V - Resource type

VF - Resource value field enum type

F - Resource filter type

All Implemented Interfaces:

Map<K,V>, IDataStore<K,V,VF,F>, IResourceStore<K,V,VF,F>

Direct Known Subclasses:

EmptyCommandStreamStore, EmptyDataStreamStore, EmptyFeatureBaseStore, EmptyPropertyStore

public abstract class EmptyResourceStore<K extends Comparable<? super K>,V extends IResource,VF extends IResourceStore.ResourceField,F extends ResourceFilter<? super V>>
extends org.sensorhub.impl.datastore.EmptyDataStore<K,V,VF,F>
implements IResourceStore<K,V,VF,F>

Helper class to implement databases that don't support all datastores

Since:

Jun 22, 2023

Nested Class Summary

Nested classes/interfaces inherited from interface org.sensorhub.api.datastore.resource.IResourceStore

IResourceStore.ResourceField

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Field Summary

Fields inherited from class org.sensorhub.impl.datastore.ReadOnlyDataStore

READ_ONLY_ERROR_MSG

Constructor Summary

Constructors

Constructor	Description
EmptyResourceStore()

Method Summary

Modifier and Type	Method	Description
K	add(V value)	Add a new resource to the store, generating a new key for it

Methods inherited from class org.sensorhub.impl.datastore.EmptyDataStore

get, getDatastoreName, selectEntries

Methods inherited from class org.sensorhub.impl.datastore.ReadOnlyDataStore

backup, clear, commit, isReadOnly, isReadSupported, isWriteSupported, put, remove, restore

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.sensorhub.api.datastore.IDataStore

backup, commit, containsKey, containsValue, countMatchingEntries, entrySet, getDatastoreName, getNumRecords, isEmpty, isReadOnly, keySet, putAll, removeEntries, restore, select, select, select, selectEntries, selectEntries, selectEntries, selectKeys, size, values

Methods inherited from interface org.sensorhub.api.datastore.resource.IResourceStore

filterBuilder, selectAllFilter

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, equals, forEach, get, getOrDefault, hashCode, merge, put, putIfAbsent, remove, remove, replace, replace, replaceAll

Constructor Details

EmptyResourceStore

public EmptyResourceStore()

Method Details

add

public K add(V value)
      throws DataStoreException

Description copied from interface: IResourceStore

Add a new resource to the store, generating a new key for it

Specified by:

add in interface IResourceStore<K extends Comparable<? super K>,V extends IResource,VF extends IResourceStore.ResourceField,F extends ResourceFilter<? super V>>

Parameters:

value - New resource object

Returns:

The newly allocated key (internal ID)

Throws:

DataStoreException - if the resource already exists