org.xmldb.api.reference

Class CollectionImpl

java.lang.Object

org.xmldb.api.sdk.SimpleConfigurable

org.xmldb.api.sdk.SimpleCollection

org.xmldb.api.reference.CollectionImpl

All Implemented Interfaces:

Collection, Configurable

public class CollectionImpl
extends SimpleCollection

A Collection is implemented as a directory in the file system.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.io.File	collection

Fields inherited from class org.xmldb.api.sdk.SimpleCollection

isOpen, services

Constructor Summary

Constructors

Constructor and Description
CollectionImpl(java.lang.String path)

Method Summary

Modifier and Type	Method and Description
void	close() Releases all resources consumed by the Collection.
java.lang.String	createId() Creates a new unique ID within the context of the Collection
Resource	createResource(java.lang.String id, java.lang.String type) Creates a new empty Resource with the provided id.
Collection	getChildCollection(java.lang.String name) Returns a Collection instance for the requested child collection if it exists.
int	getChildCollectionCount() Returns the number of child collections under this Collection.
java.lang.String	getName() Returns the name of the collection
Collection	getParentCollection() Returns the parent collection for this collection or null if no parent collection exists.
Resource	getResource(java.lang.String id) Retrieves a Resource from the database.
int	getResourceCount() Returns the number of resources currently stored in this collection or 0 if the collection is empty.
java.lang.String[]	listChildCollections() Returns a list of collection names naming all child collections of the current collection.
java.lang.String[]	listResources() Returns a list of the ids for all resources stored in the collection.
void	removeResource(Resource res) Removes the Resource from the database.
void	storeResource(Resource res) Stores the provided resource into the database.
protected void	validateResource(Resource res) Makes sure the resource is valid.

Methods inherited from class org.xmldb.api.sdk.SimpleCollection

checkOpen, getService, getServices, isOpen, registerService

Methods inherited from class org.xmldb.api.sdk.SimpleConfigurable

getProperty, setProperty

Methods inherited from class java.lang.Object

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

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

getProperty, setProperty

Field Detail

collection

protected java.io.File collection

Constructor Detail

CollectionImpl

public CollectionImpl(java.lang.String path)
               throws java.io.FileNotFoundException,
                      XMLDBException

Throws:

java.io.FileNotFoundException

XMLDBException

Method Detail

getName

public java.lang.String getName()
                         throws XMLDBException

Returns the name of the collection

Specified by:

getName in interface Collection

Overrides:

getName in class SimpleCollection

Returns:

the name of the object.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.

getParentCollection

public Collection getParentCollection()
                               throws XMLDBException

Returns the parent collection for this collection or null if no parent collection exists.

Specified by:

getParentCollection in interface Collection

Overrides:

getParentCollection in class SimpleCollection

Returns:

the parent Collection instance.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.
ErrorCodes.COLLECTION_CLOSED if the close method has been called on the Collection

getChildCollectionCount

public int getChildCollectionCount()
                            throws XMLDBException

Returns the number of child collections under this Collection.

Specified by:

getChildCollectionCount in interface Collection

Overrides:

getChildCollectionCount in class SimpleCollection

Returns:

the number of child collections.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.
ErrorCodes.COLLECTION_CLOSED if the close method has been called on the Collection

listChildCollections

public java.lang.String[] listChildCollections()
                                        throws XMLDBException

Returns a list of collection names naming all child collections of the current collection.

Specified by:

listChildCollections in interface Collection

Overrides:

listChildCollections in class SimpleCollection

Returns:

an array containing collection names for all child collections.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.
ErrorCodes.COLLECTION_CLOSED if the close method has been called on the Collection

getChildCollection

public Collection getChildCollection(java.lang.String name)
                              throws XMLDBException

Returns a Collection instance for the requested child collection if it exists.

Specified by:

getChildCollection in interface Collection

Overrides:

getChildCollection in class SimpleCollection

Parameters:

name - the name of the child collection to retrieve.

Returns:

the requested child collection or null if it couldn't be found.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.
ErrorCodes.COLLECTION_CLOSED if the close method has been called on the Collection

getResourceCount

public int getResourceCount()
                     throws XMLDBException

Returns the number of resources currently stored in this collection or 0 if the collection is empty.

Specified by:

getResourceCount in interface Collection

Overrides:

getResourceCount in class SimpleCollection

Returns:

the number of resources in the collection.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.

listResources

public java.lang.String[] listResources()
                                 throws XMLDBException

Returns a list of the ids for all resources stored in the collection.

Specified by:

listResources in interface Collection

Overrides:

listResources in class SimpleCollection

Returns:

a string array containing the names for all Resources in the collection.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.

createResource

public Resource createResource(java.lang.String id,
                               java.lang.String type)
                        throws XMLDBException

Creates a new empty Resource with the provided id.

Specified by:

createResource in interface Collection

Overrides:

createResource in class SimpleCollection

Parameters:

id - the unique id to associate with the created Resource.

type - the Resource type to create.

Returns:

an empty Resource instance.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.
ErrorCodes.UNKNOWN_RESOURCE_TYPE if the type parameter is not a known Resource type.

removeResource

public void removeResource(Resource res)
                    throws XMLDBException

Removes the Resource from the database.

Specified by:

removeResource in interface Collection

Overrides:

removeResource in class SimpleCollection

Parameters:

res - the resource to remove.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.
ErrorCodes.INVALID_RESOURCE if the Resource is not valid.
ErrorCodes.NO_SUCH_RESOURCE if the Resource is not known to this Collection.

storeResource

public void storeResource(Resource res)
                   throws XMLDBException

Stores the provided resource into the database.

Specified by:

storeResource in interface Collection

Overrides:

storeResource in class SimpleCollection

Parameters:

res - the resource to store in the database.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.
ErrorCodes.INVALID_RESOURCE if the Resource is not valid.

getResource

public Resource getResource(java.lang.String id)
                     throws XMLDBException

Retrieves a Resource from the database.

Specified by:

getResource in interface Collection

Overrides:

getResource in class SimpleCollection

Parameters:

id - the unique id for the requested resource.

Returns:

The retrieved Resource instance.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.

createId

public java.lang.String createId()
                          throws XMLDBException

Creates a new unique ID within the context of the Collection

Specified by:

createId in interface Collection

Overrides:

createId in class SimpleCollection

Returns:

the created id as a string.

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.

close

public void close()
           throws XMLDBException

Releases all resources consumed by the Collection.

Specified by:

close in interface Collection

Overrides:

close in class SimpleCollection

Throws:

XMLDBException - with expected error codes.
ErrorCodes.VENDOR_ERROR for any vendor specific errors that occur.

validateResource

protected void validateResource(Resource res)
                         throws XMLDBException

Makes sure the resource is valid.

Throws:

XMLDBException