org.dbxml.core
Class Collection

java.lang.Object
  |
  +--org.dbxml.core.CollectionManager
        |
        +--org.dbxml.core.Collection

All Implemented Interfaces:

org.dbxml.server.Configurable, DBObject, org.dbxml.server.Disposable, org.dbxml.server.Named

Direct Known Subclasses:

Database, SystemCollection

public class Collection

extends CollectionManager

implements org.dbxml.server.Named, DBObject, org.dbxml.server.Configurable

Collection represents a collection of Documents maintains links to the Filer storage implementation, the Indexes, and any XMLObjects that may be associated with the Collection.

Constructor Summary

Collection(Collection collection)

Method Summary

boolean	close() close closes the DBObject
boolean	create() create creates a new DBObject and any associated resources for the new DBObject, such as disk files, etc.
Indexer	createIndexer(org.dbxml.server.Configuration config) createIndexer creates a new Indexer object and any associated system resources that the Indexer will need.
Key	createNewOID() createNewOID allocates a new Object ID to be used as a Key in the Collection.
XMLObject	createXMLObject(org.dbxml.server.Configuration config) createXMLObject creates a new XMLObject object and any associated system resources that the XMLObject will need.
boolean	drop() drop instructs the DBObjectimplementation to remove itself from existence.
boolean	dropIndexer(Indexer index) dropIndexer physically removes the specified Indexer and any associated system resources that the Indexer uses.
boolean	dropXMLObject(XMLObject xmlObject) dropXMLObject physically removes the specified XMLObject and any associated system resources that the XMLObject uses.
boolean	exists() exists returns whether or not a physical representation of this DBObject actually exists.
void	flushSymbolTable()
java.lang.String	getCanonicalDocumentName(Key key) getCanonicalDocumentName returns the canonical name for the specified Key in relation to this Collection.
java.lang.String	getCanonicalName() getCanonicalName returns the canonical name for this Object.
java.io.File	getCollectionRoot()
Container	getContainer(java.lang.Object docKey) getContainer retrieves a Container from the Collection.
Database	getDatabase() getDatabase returns the Database owner for this Collection.
org.w3c.dom.Document	getDocument(java.lang.Object docKey) getDocument retrieves a Document by Key.
long	getDocumentCount() getDocumentCount returns the count of Documents being maintained by this Collection.
DocumentSet	getDocumentSet() getDocumentSet returns the set of Documents being maintained by this Collection.
Filer	getFiler() getFiler returns the low-level Filer instances underlying the Collection instance.
Indexer	getIndexer(java.lang.String name) getIndexer retrieves an Indexer by name.
IndexManager	getIndexManager() return the IndexManager being used by this Collection.
java.lang.String	getName()
XMLSerializable	getObject(java.lang.Object key) getObject instantiates and returns an XMLSerializable object based on the provided Key.
Collection	getParentCollection() getParentCollection returns the parent Collection of this Collection.
QueryEngine	getQueryEngine() getQueryEngine returns the Database's Query Engine
SymbolTable	getSymbols() getSymbols returns the SymbolTable in use by this Collection.
SystemCollection	getSystemCollection() getSystemCollection returns the System Collection.
XMLObject	getXMLObject(java.lang.String name) getXMLObject retrieves an XMLObject by name.
XMLObjectManager	getXMLObjectManager() getXMLObjectManager returns the Object's XMLObjectManager.
Key	insertDocument(org.w3c.dom.Document document) insertDocument inserts a new Document into a dbXML Collection.
void	insertDocument(java.lang.Object docKey, org.w3c.dom.Document document) insertDocument inserts a new Document into a dbXML Collection.
void	insertObject(java.lang.String key, XMLSerializable obj) insertObject inserts an XMLSerializable object into the Collection based on the specified Key.
Key	insertObject(XMLSerializable obj) insertObject inserts an XMLSerializable object into the Collection and returns a newly generated Key.
boolean	isOpened() isOpened returns whether or not the DBObject is opened for business.
java.lang.String[]	listDocuments() listDocuments returns a list of all document keys stored by this collection.
java.lang.String[]	listIndexers() listIndexers returns a list of the currently registered Indexers as an array of String.
java.lang.String[]	listXMLObjects() listXMLObjects returns a list of the currently registered XMLObjects as an array of String.
boolean	open() open opens the DBObject
NodeSet	queryCollection(java.lang.String style, java.lang.String query, NamespaceMap nsMap) queryCollection performs a query against the current collection using the specified style and query String.
NodeSet	queryDocument(java.lang.String style, java.lang.String query, NamespaceMap nsMap, java.lang.Object key) queryDocument performs a query against a single Document using the specified style, query string, and Document ID.
void	remove(java.lang.Object key) remove removes an object from the Collection based on its Key, regardless of it's type.
void	setConfig(org.dbxml.server.Configuration config)
void	setDocument(java.lang.Object docKey, org.w3c.dom.Document document) setDocument overwrites/updates an existing Document in a dbXML Collection.
void	setObject(java.lang.Object key, XMLSerializable obj) setObject sets an XMLSerializable object in the Collection based on the provided Key.

Methods inherited from class org.dbxml.core.CollectionManager

createCollection, dispose, dropCollection, getCollection, getConfig, listCollections

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.dbxml.server.Configurable

getConfig

Constructor Detail

Collection

public Collection(Collection collection)

Method Detail

setConfig

public void setConfig(org.dbxml.server.Configuration config)
               throws org.dbxml.server.dbXMLException

Specified by:

setConfig in interface org.dbxml.server.Configurable

Overrides:

setConfig in class CollectionManager

getName

public final java.lang.String getName()

Specified by:

getName in interface org.dbxml.server.Named

getCollectionRoot

public final java.io.File getCollectionRoot()

getParentCollection

public final Collection getParentCollection()
                                     throws DBException

getParentCollection returns the parent Collection of this Collection.

Returns:

The parent Collection (or null)

getDatabase

public Database getDatabase()

getDatabase returns the Database owner for this Collection.

Returns:

The Database

getSystemCollection

public SystemCollection getSystemCollection()
                                     throws DBException

getSystemCollection returns the System Collection.

Returns:

The System Collection

getQueryEngine

public QueryEngine getQueryEngine()
                           throws DBException

getQueryEngine returns the Database's Query Engine

Returns:

The Query Engine

getIndexer

public final Indexer getIndexer(java.lang.String name)
                         throws DBException

getIndexer retrieves an Indexer by name.

Parameters:

name - The Indexer name

Returns:

The Indexer (or null)

listIndexers

public final java.lang.String[] listIndexers()
                                      throws DBException

listIndexers returns a list of the currently registered Indexers as an array of String.

Returns:

The Indexer list

dropIndexer

public final boolean dropIndexer(Indexer index)
                          throws DBException

dropIndexer physically removes the specified Indexer and any associated system resources that the Indexer uses.

Parameters:

index - The Indexer to drop

Returns:

Whether or not the Indexer was dropped

createIndexer

public final Indexer createIndexer(org.dbxml.server.Configuration config)
                            throws DBException

createIndexer creates a new Indexer object and any associated system resources that the Indexer will need.

Parameters:

config - The Indexer's configuration

Returns:

The newly created Indexer

getFiler

public final Filer getFiler()

getFiler returns the low-level Filer instances underlying the Collection instance.

Returns:

The requested Filer

getIndexManager

public final IndexManager getIndexManager()
                                   throws DBException

return the IndexManager being used by this Collection.

Returns:

The IndexManager

getXMLObjectManager

public final XMLObjectManager getXMLObjectManager()
                                           throws DBException

getXMLObjectManager returns the Object's XMLObjectManager.

Returns:

The XMLObjectManager

getXMLObject

public final XMLObject getXMLObject(java.lang.String name)
                             throws DBException

getXMLObject retrieves an XMLObject by name.

Parameters:

name - The XMLObject's name

Returns:

The XMLObject (or null)

listXMLObjects

public java.lang.String[] listXMLObjects()
                                  throws DBException

listXMLObjects returns a list of the currently registered XMLObjects as an array of String.

Returns:

The XMLObject list

dropXMLObject

public final boolean dropXMLObject(XMLObject xmlObject)
                            throws DBException

dropXMLObject physically removes the specified XMLObject and any associated system resources that the XMLObject uses.

Parameters:

xmlObject - The XMLObject to drop

Returns:

Whether or not the XMLObject was dropped

createXMLObject

public final XMLObject createXMLObject(org.dbxml.server.Configuration config)
                                throws DBException

createXMLObject creates a new XMLObject object and any associated system resources that the XMLObject will need.

Parameters:

config - The XMLObject's configuration

Returns:

The newly created XMLObject

getSymbols

public final SymbolTable getSymbols()
                             throws DBException

getSymbols returns the SymbolTable in use by this Collection.

Returns:

The Symbol Table

getCanonicalName

public final java.lang.String getCanonicalName()

getCanonicalName returns the canonical name for this Object.
ex: /local/test/ocs

Returns:

The canonical name

getCanonicalDocumentName

public final java.lang.String getCanonicalDocumentName(Key key)

getCanonicalDocumentName returns the canonical name for the specified Key in relation to this Collection.
ex: /local/test/ocs/ytd

Parameters:

key - The Key

Returns:

The canonical name

open

public final boolean open()
                   throws DBException

Description copied from interface: DBObject

open opens the DBObject

Specified by:

open in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the DBObject was opened

isOpened

public boolean isOpened()
                 throws DBException

Description copied from interface: DBObject

isOpened returns whether or not the DBObject is opened for business.

Specified by:

isOpened in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

The open status of the DBObject

exists

public boolean exists()
               throws DBException

Description copied from interface: DBObject

exists returns whether or not a physical representation of this DBObject actually exists. In the case of a HashFiler, this would check for the file, and in the case of an FTPFiler, it might perform a connection check.

Specified by:

exists in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the physical resource exists

close

public boolean close()
              throws DBException

Description copied from interface: DBObject

close closes the DBObject

Specified by:

close in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the DBObject was closed

create

public boolean create()
               throws DBException

Description copied from interface: DBObject

create creates a new DBObject and any associated resources for the new DBObject, such as disk files, etc.

Specified by:

create in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the DBObject was created

drop

public boolean drop()
             throws DBException

Description copied from interface: DBObject

drop instructs the DBObjectimplementation to remove itself from existence. The DBObject's parent is responsible for removing any references to the DBObject in its own context.

Specified by:

drop in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the DBObject was dropped

createNewOID

public final Key createNewOID()

createNewOID allocates a new Object ID to be used as a Key in the Collection.

Returns:

The newly generated Key

flushSymbolTable

public final void flushSymbolTable()
                            throws DBException

insertDocument

public final Key insertDocument(org.w3c.dom.Document document)
                         throws DBException

insertDocument inserts a new Document into a dbXML Collection.

Parameters:

document - The Document

Returns:

The new Object Identifier

insertDocument

public final void insertDocument(java.lang.Object docKey,
                                 org.w3c.dom.Document document)
                          throws DBException

insertDocument inserts a new Document into a dbXML Collection.

Parameters:

docKey - The document Key

value - The Document

setDocument

public final void setDocument(java.lang.Object docKey,
                              org.w3c.dom.Document document)
                       throws DBException

setDocument overwrites/updates an existing Document in a dbXML Collection.

Parameters:

docKey - The Document Key

document - The Document

remove

public final void remove(java.lang.Object key)
                  throws DBException

remove removes an object from the Collection based on its Key, regardless of it's type.

Parameters:

key - The Object's Key

getDocument

public final org.w3c.dom.Document getDocument(java.lang.Object docKey)
                                       throws DBException

getDocument retrieves a Document by Key.

Parameters:

docKey - The Document Key

Returns:

The Document

getContainer

public final Container getContainer(java.lang.Object docKey)
                             throws DBException

getContainer retrieves a Container from the Collection. The Container encapsulates all information needed in dealing with a Document outside of the context of a Collection (ex: DocumentContext).

Parameters:

docKey - The Document Key

Returns:

The Container

getObject

public final XMLSerializable getObject(java.lang.Object key)
                                throws DBException

getObject instantiates and returns an XMLSerializable object based on the provided Key. dbXML takes care of instantiating the correct class, but only if a class was registered with the Document in the first place.

Parameters:

key - The Document Key

Returns:

an Castable XMLSerializable Instance

setObject

public final void setObject(java.lang.Object key,
                            XMLSerializable obj)
                     throws DBException

setObject sets an XMLSerializable object in the Collection based on the provided Key. dbXML takes care of associating the implementation class with the XMLSerializable object.

Parameters:

key - The Key to use

obj - The Object to set

insertObject

public final Key insertObject(XMLSerializable obj)
                       throws DBException

insertObject inserts an XMLSerializable object into the Collection and returns a newly generated Key. dbXML takes care of associating the implementation class with the XMLSerializable object.

Parameters:

obj - The Object to insert

Returns:

The newly generated Key

insertObject

public final void insertObject(java.lang.String key,
                               XMLSerializable obj)
                        throws DBException

insertObject inserts an XMLSerializable object into the Collection based on the specified Key. dbXML takes care of associating the implementation class with the XMLSerializable object.

Parameters:

key - The Key to use

obj - The Object to insert

queryCollection

public final NodeSet queryCollection(java.lang.String style,
                                     java.lang.String query,
                                     NamespaceMap nsMap)
                              throws DBException

queryCollection performs a query against the current collection using the specified style and query String.

Parameters:

style - The query style to use (ex: XPath)

query - The query to execute

nsMap - The namespace Map (if any)

Returns:

The resulting NodeSet

queryDocument

public final NodeSet queryDocument(java.lang.String style,
                                   java.lang.String query,
                                   NamespaceMap nsMap,
                                   java.lang.Object key)
                            throws DBException

queryDocument performs a query against a single Document using the specified style, query string, and Document ID.

Parameters:

style - The query style to use (ex: XPath)

query - The query to execute

nsMap - The namespace Map (if any)

key - The Document to query

Returns:

The resulting NodeSet

getDocumentSet

public final DocumentSet getDocumentSet()
                                 throws DBException

getDocumentSet returns the set of Documents being maintained by this Collection.

Returns:

The DocumentSet

listDocuments

public final java.lang.String[] listDocuments()
                                       throws DBException

listDocuments returns a list of all document keys stored by this collection.

Returns:

the list of document keys

getDocumentCount

public final long getDocumentCount()
                            throws DBException

getDocumentCount returns the count of Documents being maintained by this Collection.

Returns:

The Document count