org.iota.jota.store

Class FlatFileStore

java.lang.Object

org.iota.jota.store.FlatFileStore

All Implemented Interfaces:

Store

Direct Known Subclasses:

JsonFlatFileStore

public class FlatFileStore
extends Object
implements Store

Field Summary

Fields

Modifier and Type	Field and Description
protected MemoryStore	memoryStore

Constructor Summary

Constructors

Constructor and Description
FlatFileStore(File file)
FlatFileStore(InputStream inputStream, OutputStream outputStream) Careful when supplying a stream, FlatFileStore CONTINUOUSLY writes to output stream.
FlatFileStore(String location)
FlatFileStore(URI location)

Method Summary

Modifier and Type	Method and Description
boolean	canWrite() Some stores like environment variables can't write.
Serializable	delete(String key) Delete a field form the store
Serializable	get(String key)
<T extends Serializable> T	get(String key, T def) Gets a value from the store
Map<String,Serializable>	getAll() Returns all the values in this store
void	load() Loads this store into cache
protected Map<String,Serializable>	loadFromInputStream(InputStream stream)
void	save(boolean closeResources) Saves this store onto its storage method.
<T extends Serializable> T	set(String key, T value) Sets a value in the store
String	toString()
protected void	writeToOutputStream(OutputStream stream, Map<String,Serializable> store)

Methods inherited from class java.lang.Object

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

Field Detail

memoryStore

protected MemoryStore memoryStore

Constructor Detail

FlatFileStore

public FlatFileStore(InputStream inputStream,
                     OutputStream outputStream)

Careful when supplying a stream, FlatFileStore CONTINUOUSLY writes to output stream.

Parameters:

inputStream -

outputStream -

FlatFileStore

public FlatFileStore(File file)

FlatFileStore

public FlatFileStore(String location)

FlatFileStore

public FlatFileStore(URI location)

Method Detail

load

public void load()
          throws Exception

Description copied from interface: Store

Loads this store into cache

Specified by:

load in interface Store

Throws:

Exception

loadFromInputStream

protected Map<String,Serializable> loadFromInputStream(InputStream stream)

writeToOutputStream

protected void writeToOutputStream(OutputStream stream,
                                   Map<String,Serializable> store)
                            throws IOException

Throws:

IOException

save

public void save(boolean closeResources)

Description copied from interface: Store

Saves this store onto its storage method.

Specified by:

save in interface Store

Parameters:

closeResources - if we want to clean up (final safe before exit)

get

public Serializable get(String key)

Specified by:

get in interface Store

Returns:

get

public <T extends Serializable> T get(String key,
                                      T def)

Description copied from interface: Store

Gets a value from the store

Specified by:

get in interface Store

Parameters:

key - The field to look for

def - The object to return when the key doesn't have a field

Returns:

the requested value, or the default when the key didn't exist

set

public <T extends Serializable> T set(String key,
                                      T value)

Description copied from interface: Store

Sets a value in the store

Specified by:

set in interface Store

Parameters:

key - The field to set the value

value - The value to set

Returns:

The old value, or null if there was none

getAll

public Map<String,Serializable> getAll()

Description copied from interface: Store

Returns all the values in this store

Specified by:

getAll in interface Store

Returns:

Map of values

canWrite

public boolean canWrite()

Description copied from interface: Store

Some stores like environment variables can't write. Those stores can't be used in account storage.

Specified by:

canWrite in interface Store

Returns:

toString

public String toString()

Overrides:

toString in class Object

delete

public Serializable delete(String key)

Description copied from interface: Store

Delete a field form the store

Specified by:

delete in interface Store

Parameters:

key - the key we want to delete

Returns:

The deleted value, or null if there was none