org.duracloud.storage.util

Class StorageProviderUtil

java.lang.Object

org.duracloud.storage.util.StorageProviderUtil

public class StorageProviderUtil
extends Object

Provides utility methods for Storage Providers

Author:

Bill Branan

Constructor Summary

Constructors

Constructor and Description
StorageProviderUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static String	compareChecksum(StorageProvider provider, String spaceId, String contentId, String checksum) Determines if the checksum for a particular piece of content stored in a StorageProvider matches the expected checksum value.
static String	compareChecksum(String providerChecksum, String spaceId, String contentId, String checksum) Determines if two checksum values are equal
static boolean	contains(Iterator<String> iterator, String value) Determines if a String value is included in a Iterated list.
static long	count(Iterator<String> iterator) Determines the number of elements in an iteration.
static List<String>	getList(Iterator<String> iterator) Creates a list of all of the items in an iteration.
static Map<String,String>	loadProperties(InputStream is) Loads a stream containing properties and populates a map with the properties name/value pairs.
static ByteArrayInputStream	storeProperties(Map<String,String> propertiesMap) Converts properties stored in a Map into a stream for storage purposes.

Methods inherited from class java.lang.Object

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

Constructor Detail

StorageProviderUtil

public StorageProviderUtil()

Method Detail

loadProperties

public static Map<String,String> loadProperties(InputStream is)
                                         throws StorageException

Loads a stream containing properties and populates a map with the properties name/value pairs.

Parameters:

is -

Returns:

Throws:

StorageException

storeProperties

public static ByteArrayInputStream storeProperties(Map<String,String> propertiesMap)
                                            throws StorageException

Converts properties stored in a Map into a stream for storage purposes.

Parameters:

propertiesMap -

Returns:

Throws:

StorageException

compareChecksum

public static String compareChecksum(StorageProvider provider,
                     String spaceId,
                     String contentId,
                     String checksum)
                              throws StorageException

Determines if the checksum for a particular piece of content stored in a StorageProvider matches the expected checksum value.

Parameters:

provider - The StorageProvider where the content was stored

spaceId - The Space in which the content was stored

contentId - The Id of the content

checksum - The content checksum, either provided or computed

Throws:

StorageException - if the included checksum does not match the storage provider generated checksum

compareChecksum

public static String compareChecksum(String providerChecksum,
                     String spaceId,
                     String contentId,
                     String checksum)
                              throws StorageException

Determines if two checksum values are equal

Parameters:

providerChecksum - The checksum provided by the StorageProvider

spaceId - The Space in which the content was stored

contentId - The Id of the content

checksum - The content checksum, either provided or computed

Throws:

StorageException - if the included checksum does not match the storage provider generated checksum

contains

public static boolean contains(Iterator<String> iterator,
               String value)

Determines if a String value is included in a Iterated list. The iteration is only run as far as necessary to determine if the value is included in the underlying list.

Parameters:

iterator -

value -

Returns:

count

public static long count(Iterator<String> iterator)

Determines the number of elements in an iteration.

Parameters:

iterator -

Returns:

getList

public static List<String> getList(Iterator<String> iterator)

Creates a list of all of the items in an iteration. Be wary of using this for Iterations of very long lists.

Parameters:

iterator -

Returns: