weka.core.metastore

Interface MetaStore

All Known Implementing Classes:

XMLFileBasedMetaStore

public interface MetaStore

Interface for metastore implementations. The metastore is a simple storage place that can be used, as an example, for storing named configuration settings (e.g. general application settings, reusable database connections etc.).

Method Summary

Modifier and Type	Method and Description
void	createStore(java.lang.String storeName) Create a named store
java.lang.Object	getEntry(java.lang.String storeName, java.lang.String name, java.lang.Class<?> clazz) Get a named entry from the store
java.util.Set<java.lang.String>	listMetaStoreEntries(java.lang.String storeName) Get a list of all entries in a named store
java.util.Set<java.lang.String>	listMetaStoreEntries(java.lang.String storeName, java.lang.String prefix) Get a list of all named entries starting with the given prefix
java.util.Set<java.lang.String>	listMetaStores() Get a list of all named meta stores
void	storeEntry(java.lang.String storeName, java.lang.String name, java.lang.Object toStore) Store a named entry

Method Detail

listMetaStores

java.util.Set<java.lang.String> listMetaStores()
                                        throws java.io.IOException

Get a list of all named meta stores

Returns:

a list of meta stores

Throws:

java.io.IOException - if a problem occurs

listMetaStoreEntries

java.util.Set<java.lang.String> listMetaStoreEntries(java.lang.String storeName)
                                              throws java.io.IOException

Get a list of all entries in a named store

Parameters:

storeName - the name of the store to get entries for

Returns:

a list of all entries in the named store

Throws:

java.io.IOException - if a problem occurs

listMetaStoreEntries

java.util.Set<java.lang.String> listMetaStoreEntries(java.lang.String storeName,
                                                     java.lang.String prefix)
                                              throws java.io.IOException

Get a list of all named entries starting with the given prefix

Parameters:

storeName - the name of the store to get entries for

prefix - the prefix with which to search for entries

Returns:

a list of entries

Throws:

java.io.IOException - if a problem occurs

createStore

void createStore(java.lang.String storeName)
          throws java.io.IOException

Create a named store

Parameters:

storeName - the name of the store to create

Throws:

java.io.IOException - if a problem occurs

getEntry

java.lang.Object getEntry(java.lang.String storeName,
                          java.lang.String name,
                          java.lang.Class<?> clazz)
                   throws java.io.IOException

Get a named entry from the store

Parameters:

storeName - the name of the store to use

name - the full name of the entry to retrieve

clazz - the expected class of the entry when deserialized

Returns:

the deserialized entry or null if the name does not exist in the store

Throws:

java.io.IOException - if the deserialized entry does not match the expected class

storeEntry

void storeEntry(java.lang.String storeName,
                java.lang.String name,
                java.lang.Object toStore)
         throws java.io.IOException

Store a named entry

Parameters:

storeName - the name of the store to use

name - the full name of the entry to store

toStore - a beans compliant object to store

Throws:

java.io.IOException - if a problem occurs