org.dspace.content

Class MetadataSchema

java.lang.Object

org.dspace.content.MetadataSchema

public class MetadataSchema
extends Object

Class representing a schema in DSpace.

The schema object exposes a name which can later be used to generate namespace prefixes in RDF or XML, e.g. the core DSpace Dublin Core schema would have a name of 'dc'.

Version:

$Revision$

Author:

Martin Hald

See Also:

MetadataValue, MetadataField

Field Summary

Fields

Modifier and Type	Field and Description
static String	DC_SCHEMA Short Name of built-in Dublin Core schema.
static int	DC_SCHEMA_ID Numeric Identifier of built-in Dublin Core schema.

Constructor Summary

Constructors

Constructor and Description
MetadataSchema() Default constructor.
MetadataSchema(int schemaID, String namespace, String name) Object constructor.
MetadataSchema(String namespace, String name) Immutable object constructor for creating a new schema.
MetadataSchema(TableRow row) Constructor for loading the metadata schema from the database.

Method Summary

Methods

Modifier and Type	Method and Description
void	create(Context context) Creates a new metadata schema in the database, out of this object.
void	delete(Context context) Delete the metadata schema.
boolean	equals(Object obj)
static MetadataSchema	find(Context context, int id) Get the schema corresponding with this numeric ID.
static MetadataSchema	find(Context context, String shortName) Get the schema corresponding with this short name.
static MetadataSchema[]	findAll(Context context) Return all metadata schemas.
static MetadataSchema	findByNamespace(Context context, String namespace) Get the schema object corresponding to this namespace URI.
String	getName() Get the schema name.
String	getNamespace() Get the schema namespace.
int	getSchemaID() Get the schema record key number.
int	hashCode()
void	setName(String name) Set the schema name.
void	setNamespace(String namespace) Set the schema namespace.
void	update(Context context) Update the metadata schema in the database.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

DC_SCHEMA_ID

public static final int DC_SCHEMA_ID

Numeric Identifier of built-in Dublin Core schema.

See Also:

Constant Field Values

DC_SCHEMA

public static final String DC_SCHEMA

Short Name of built-in Dublin Core schema.

See Also:

Constant Field Values

Constructor Detail

MetadataSchema

public MetadataSchema()

Default constructor.

MetadataSchema

public MetadataSchema(int schemaID,
              String namespace,
              String name)

Object constructor.

Parameters:

schemaID - database key ID number

namespace - XML namespace URI

name - short name of schema

MetadataSchema

public MetadataSchema(String namespace,
              String name)

Immutable object constructor for creating a new schema.

Parameters:

namespace - XML namespace URI

name - short name of schema

MetadataSchema

public MetadataSchema(TableRow row)

Constructor for loading the metadata schema from the database.

Parameters:

row - table row object from which to populate this schema.

Method Detail

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getNamespace

public String getNamespace()

Get the schema namespace.

Returns:

namespace String

setNamespace

public void setNamespace(String namespace)

Set the schema namespace.

Parameters:

namespace - XML namespace URI

getName

public String getName()

Get the schema name.

Returns:

name String

setName

public void setName(String name)

Set the schema name.

Parameters:

name - short name of schema

getSchemaID

public int getSchemaID()

Get the schema record key number.

Returns:

schema record key

create

public void create(Context context)
            throws SQLException,
                   AuthorizeException,
                   NonUniqueMetadataException

Creates a new metadata schema in the database, out of this object.

Parameters:

context - DSpace context object

Throws:

SQLException

AuthorizeException

NonUniqueMetadataException

findByNamespace

public static MetadataSchema findByNamespace(Context context,
                             String namespace)
                                      throws SQLException

Get the schema object corresponding to this namespace URI.

Parameters:

context - DSpace context

namespace - namespace URI to match

Returns:

metadata schema object or null if none found.

Throws:

SQLException

update

public void update(Context context)
            throws SQLException,
                   AuthorizeException,
                   NonUniqueMetadataException

Update the metadata schema in the database.

Parameters:

context - DSpace context

Throws:

SQLException

AuthorizeException

NonUniqueMetadataException

delete

public void delete(Context context)
            throws SQLException,
                   AuthorizeException

Delete the metadata schema.

Parameters:

context - DSpace context

Throws:

SQLException

AuthorizeException

findAll

public static MetadataSchema[] findAll(Context context)
                                throws SQLException

Return all metadata schemas.

Parameters:

context - DSpace context

Returns:

array of metadata schemas

Throws:

SQLException

find

public static MetadataSchema find(Context context,
                  int id)
                           throws SQLException

Get the schema corresponding with this numeric ID. The ID is a database key internal to DSpace.

Parameters:

context - context, in case we need to read it in from DB

id - the schema ID

Returns:

the metadata schema object

Throws:

SQLException

find

public static MetadataSchema find(Context context,
                  String shortName)
                           throws SQLException

Get the schema corresponding with this short name.

Parameters:

context - context, in case we need to read it in from DB

shortName - the short name for the schema

Returns:

the metadata schema object

Throws:

SQLException