BlobStore (Apache jclouds 1.7.3 API)

All Known Subinterfaces:

LocalBlobStore

All Known Implementing Classes:

AtmosBlobStore, AWSS3BlobStore, AzureBlobStore, BaseBlobStore, CloudFilesBlobStore, HPCloudObjectStorageBlobStore, RegionScopedSwiftBlobStore, S3BlobStore, SwiftBlobStore
```
public interface BlobStore
```
Synchronous access to a BlobStore such as Amazon S3

Author:

Adrian Cole

See Also:
AsyncBlobStore, BlobStoreContextFactory

Method Summary

Methods
Modifier and Type	Method and Description
`BlobBuilder`	`blobBuilder(String name)`
`boolean`	`blobExists(String container, String name)` Determines if a blob exists
`BlobMetadata`	`blobMetadata(String container, String name)` Retrieves the metadata of a `Blob` at location `container/name`
`void`	`clearContainer(String container)` This will delete the contents of a container at its root path without deleting the container
`void`	`clearContainer(String container, ListContainerOptions options)` Like `clearContainer(String)` except you can use options to do things like recursive deletes, or clear at a different path than root.
`boolean`	`containerExists(String container)` determines if a service-level container exists
`long`	`countBlobs(String container)`
`long`	`countBlobs(String container, ListContainerOptions options)`
`boolean`	`createContainerInLocation(Location location, String container)` Creates a namespace for your blobs A container is a namespace for your objects.
`boolean`	`createContainerInLocation(Location location, String container, CreateContainerOptions options)`
`void`	`createDirectory(String container, String directory)` Creates a folder or a directory marker depending on the service
`void`	`deleteContainer(String container)` This will delete everything inside a container recursively.
`void`	`deleteDirectory(String containerName, String name)` Deletes a folder or a directory marker depending on the service
`boolean`	`directoryExists(String container, String directory)` Determines if a directory exists
`Blob`	`getBlob(String container, String name)` Retrieves a `Blob` representing the data at location `container/name`
`Blob`	`getBlob(String container, String name, GetOptions options)` Retrieves a `Blob` representing the data at location `container/name`
`BlobStoreContext`	`getContext()`
`PageSet<? extends StorageMetadata>`	`list()` Lists all root-level resources available to the identity.
`PageSet<? extends StorageMetadata>`	`list(String container)` Lists all resources in a container non-recursive.
`PageSet<? extends StorageMetadata>`	`list(String container, ListContainerOptions options)` Like `list(String)` except you can control the size, recursion, and context of the list using `options`
`Set<? extends Location>`	`listAssignableLocations()` The get locations command returns all the valid locations for containers.
`String`	`putBlob(String container, Blob blob)` Adds a `Blob` representing the data at location `container/blob.metadata.name`
`String`	`putBlob(String container, Blob blob, PutOptions options)` Adds a `Blob` representing the data at location `container/blob.metadata.name` options using multipart strategies.
`void`	`removeBlob(String container, String name)` Deletes a `Blob` representing the data at location `container/name`

- Method Detail
  - getContext
```
BlobStoreContext getContext()
```
    Returns:
    a reference to the context that created this BlobStore.
  - blobBuilder
```
BlobBuilder blobBuilder(String name)
```
    Returns:
    builder for creating new Blobs
  - listAssignableLocations
```
Set<? extends Location> listAssignableLocations()
```
    The get locations command returns all the valid locations for containers. A location has a scope, which is typically region or zone. A region is a general area, like eu-west, where a zone is similar to a datacenter. If a location has a parent, that implies it is within that location. For example a location can be a rack, whose parent is likely to be a zone.
  - list
```
PageSet<? extends StorageMetadata> list()
```
    Lists all root-level resources available to the identity.
  - containerExists
```
boolean containerExists(String container)
```
    determines if a service-level container exists
  - createContainerInLocation
```
boolean createContainerInLocation(@Nullable
                                Location location,
                                String container)
```
    Creates a namespace for your blobs
    A container is a namespace for your objects. Depending on the service, the scope can be global, identity, or sub-identity scoped. For example, in Amazon S3, containers are called buckets, and they must be uniquely named such that no-one else in the world conflicts. In other blobstores, the naming convention of the container is less strict. All blobstores allow you to list your containers and also the contents within them. These contents can either be blobs, folders, or virtual paths.
    
    Parameters:
    location - some blobstores allow you to specify a location, such as US-EAST, for where this container will exist. null will choose a default location
    container - namespace. Typically constrained to lowercase alpha-numeric and hyphens.
    
    Returns:
    true if the container was created, false if it already existed.
  - createContainerInLocation
```
boolean createContainerInLocation(@Nullable
                                Location location,
                                String container,
                                CreateContainerOptions options)
```
    Parameters:
    options - controls default access control
    See Also:
    createContainerInLocation(Location,String)
  - list
```
PageSet<? extends StorageMetadata> list(String container)
```
    Lists all resources in a container non-recursive.
    
    Parameters:
    container - what to list
    
    Returns:
    a list that may be incomplete, depending on whether PageSet#getNextMarker is set
  - list
```
PageSet<? extends StorageMetadata> list(String container,
                                      ListContainerOptions options)
```
    Like list(String) except you can control the size, recursion, and context of the list using options
    
    Parameters:
    container - what to list
    options - size, recursion, and context of the list
    
    Returns:
    a list that may be incomplete, depending on whether PageSet#getNextMarker is set
  - clearContainer
```
void clearContainer(String container)
```
    This will delete the contents of a container at its root path without deleting the container
    
    Parameters:
    container - what to clear
  - clearContainer
```
void clearContainer(String container,
                  ListContainerOptions options)
```
    Like clearContainer(String) except you can use options to do things like recursive deletes, or clear at a different path than root.
    
    Parameters:
    container - what to clear
    options - recursion and path to clear
  - deleteContainer
```
void deleteContainer(String container)
```
    This will delete everything inside a container recursively.
    
    Parameters:
    container - what to delete
  - directoryExists
```
boolean directoryExists(String container,
                      String directory)
```
    Determines if a directory exists
    
    Parameters:
    container - container where the directory resides
    directory - full path to the directory
  - createDirectory
```
void createDirectory(String container,
                   String directory)
```
    Creates a folder or a directory marker depending on the service
    
    Parameters:
    container - container to create the directory in
    directory - full path to the directory
  - deleteDirectory
```
void deleteDirectory(String containerName,
                   String name)
```
    Deletes a folder or a directory marker depending on the service
    
    Parameters:
    container - container to delete the directory from
    directory - full path to the directory to delete
  - blobExists
```
boolean blobExists(String container,
                 String name)
```
    Determines if a blob exists
    
    Parameters:
    container - container where the blob resides
    directory - full path to the blob
  - putBlob
```
String putBlob(String container,
             Blob blob)
```
    Adds a Blob representing the data at location container/blob.metadata.name
    
    Parameters:
    container - container to place the blob.
    blob - fully qualified name relative to the container.
    options - byte range or condition options
    
    Returns:
    etag of the blob you uploaded, possibly null where etags are unsupported
    
    Throws:
    
    ContainerNotFoundException - if the container doesn't exist
  - putBlob
```
String putBlob(String container,
             Blob blob,
             PutOptions options)
```
    Adds a Blob representing the data at location container/blob.metadata.name options using multipart strategies.
    
    Parameters:
    container - container to place the blob.
    blob - fully qualified name relative to the container.
    options - byte range options
    
    Returns:
    etag of the blob you uploaded, possibly null where etags are unsupported
    
    Throws:
    
    ContainerNotFoundException - if the container doesn't exist
  - blobMetadata
```
BlobMetadata blobMetadata(String container,
                        String name)
```
    Retrieves the metadata of a Blob at location container/name
    
    Parameters:
    container - container where this exists.
    name - fully qualified name relative to the container.
    
    Returns:
    null if name isn't present or the blob you intended to receive.
    
    Throws:
    
    ContainerNotFoundException - if the container doesn't exist
  - getBlob
```
Blob getBlob(String container,
           String name)
```
    Retrieves a Blob representing the data at location container/name
    
    Parameters:
    container - container where this exists.
    name - fully qualified name relative to the container.
    
    Returns:
    the blob you intended to receive or null, if it doesn't exist.
    
    Throws:
    
    ContainerNotFoundException - if the container doesn't exist
  - getBlob
```
Blob getBlob(String container,
           String name,
           GetOptions options)
```
    Retrieves a Blob representing the data at location container/name
    
    Parameters:
    container - container where this exists.
    name - fully qualified name relative to the container.
    options - byte range or condition options
    
    Returns:
    the blob you intended to receive or null, if it doesn't exist.
    
    Throws:
    
    ContainerNotFoundException - if the container doesn't exist
  - removeBlob
```
void removeBlob(String container,
              String name)
```
    Deletes a Blob representing the data at location container/name
    
    Parameters:
    container - container where this exists.
    name - fully qualified name relative to the container.
    
    Throws:
    
    ContainerNotFoundException - if the container doesn't exist
  - countBlobs
```
long countBlobs(String container)
```
    Returns:
    a count of all blobs in the container, excluding directory markers
  - countBlobs
```
long countBlobs(String container,
              ListContainerOptions options)
```
    Returns:
    a count of all blobs that are in a listing constrained by the options specified, excluding directory markers

Interface BlobStore

Method Summary

Method Detail

getContext

blobBuilder

listAssignableLocations

list

containerExists

createContainerInLocation

createContainerInLocation

list

list

clearContainer

clearContainer

deleteContainer

directoryExists

createDirectory

deleteDirectory

blobExists

putBlob

putBlob

blobMetadata

getBlob

getBlob

removeBlob

countBlobs

countBlobs