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A generic storage manager. A storage can be a single file, and set of files organized in a several directories, a data base, etc. A storage must be opened before one can read or write values in it. It must be closed after use. Each storage contains a set of (name, value) pairs.
Method Summary | |
void |
close()
Closes the currently opened storage. |
Object |
load(String name)
Loads the object whose name is given, from the currently opened storage. |
void |
open(String storage,
boolean create)
Opens the storage whose name is given. |
void |
store(String name,
Object value)
Stores the given object under the given name in the currently opened storage. |
Method Detail |
public void open(String storage, boolean create) throws Exception
storage
- name of the storage to be openedcreate
- true to create a new storage, or to override an
existing one, or false to open an existing storage.
Exception
- if the storage cannot be opened.public Object load(String name) throws Exception
name
- the name of the object to be loaded.
Exception
- if the given object cannot be loaded.public void store(String name, Object value) throws Exception
name
- the name of the object to be stored.value
- the value of the object to be stored.
Exception
- if the object cannot be stored.public void close() throws Exception
Exception
- if the currently opened storage cannot be closed.
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