org.xmldb.api.base

Interface Database

All Superinterfaces:

Configurable

All 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

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

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

getProperty, setProperty

Method Detail

getName

java.lang.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.

getCollection

Collection getCollection(java.lang.String uri,
                         java.lang.String username,
                         java.lang.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.

acceptsURI

boolean acceptsURI(java.lang.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.

getConformanceLevel

java.lang.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.