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org.xmldb.api.base

Interface Database

All Superinterfaces:
Configurable
Known Implementing Classes:
DatabaseImpl, SimpleDatabase
public interface Database
extends Configurable
Database is an encapsulation of the database driver functionality that is necessary to access an XML database. Each vendor must provide their own implmentation of the Database interface. The implementation is registered with the DatabaseManager to provide access to the resources of the XML database.

In general usage client applications should only access Database implementations directly during initialization.

Method Summary

boolean
acceptsURI(String uri)
acceptsURI determines whether this Database implementation can handle the URI.
Collection
getCollection(String uri, String username, String password)
Retrieves a Collection instance based on the URI provided in the uri parameter.
String
getConformanceLevel()
Returns the XML:DB API Conformance level for the implementation.
String
getName()
Returns the name associated with the Database instance.

Methods inherited from interface org.xmldb.api.base.Configurable

getProperty, setProperty

Method Details

acceptsURI

public boolean acceptsURI(String uri)
            throws XMLDBException
acceptsURI determines whether this Database implementation can handle the URI. It should return true if the Database instance knows how to handle the URI and false otherwise.
Parameters:
uri - the URI to check for.
Returns:
true if the URI can be handled, false otherwise.
Throws:
XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.
ErrroCodes.INVALID_URI If the URI is not in a valid format.

getCollection

public Collection getCollection(String uri,
                                String username,
                                String password)
            throws XMLDBException
Retrieves a Collection instance based on the URI provided in the uri parameter. The format of the URI is defined in the documentation for DatabaseManager.getCollection().

Authentication is handled via username and password however it is not required that the database support authentication. Databases that do not support authentication MUST ignore the username and password if those provided are not null.

Parameters:
uri - the URI to use to locate the collection.
password - The password to use for authentication to the database or null if the database does not support authentication.
Returns:
A Collection instance for the requested collection or null if the collection could not be found.
Throws:
XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.
ErrroCodes.INVALID_URI If the URI is not in a valid format.
ErrroCodes.PERMISSION_DENIED If the username and password were not accepted by the database.

getConformanceLevel

public String getConformanceLevel()
            throws XMLDBException
Returns the XML:DB API Conformance level for the implementation. This can be used by client programs to determine what functionality is available to them.
Returns:
the XML:DB API conformance level for this implementation.
Throws:
XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.

getName

public String getName()
            throws XMLDBException
Returns the name associated with the Database instance.
Returns:
the name of the object.
Throws:
XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.

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