org.apache.jackrabbit.commons

Class AbstractSession

java.lang.Object

org.apache.jackrabbit.commons.AbstractSession

All Implemented Interfaces:

Session

Direct Known Subclasses:

SessionImpl, SessionImpl

public abstract class AbstractSession
extends Object
implements Session

Abstract base class for implementing the JCR Session interface.

Field Summary

Fields inherited from interface javax.jcr.Session

ACTION_ADD_NODE, ACTION_READ, ACTION_REMOVE, ACTION_SET_PROPERTY

Constructor Summary

Constructors

Constructor and Description
AbstractSession()

Method Summary

Modifier and Type	Method and Description
void	exportDocumentView(String path, ContentHandler handler, boolean skipBinary, boolean noRecurse) Generates a document view export using a DocumentViewExporter instance.
void	exportDocumentView(String absPath, OutputStream out, boolean skipBinary, boolean noRecurse) Calls Session.exportDocumentView(String, ContentHandler, boolean, boolean) with the given arguments and a ContentHandler that serializes SAX events to the given output stream.
void	exportSystemView(String path, ContentHandler handler, boolean skipBinary, boolean noRecurse) Generates a system view export using a SystemViewExporter instance.
void	exportSystemView(String absPath, OutputStream out, boolean skipBinary, boolean noRecurse) Calls Session.exportSystemView(String, ContentHandler, boolean, boolean) with the given arguments and a ContentHandler that serializes SAX events to the given output stream.
Item	getItem(String absPath) Returns the node or property at the given path.
String	getNamespacePrefix(String uri) Returns the namespace prefix mapped to the given URI.
String[]	getNamespacePrefixes() Returns the prefixes of all known namespace mappings.
String	getNamespaceURI(String prefix) Returns the namespace URI mapped to the given prefix.
Node	getNode(String absPath) Returns the node with the given absolute path.
Property	getProperty(String absPath) Returns the property with the given absolute path.
Session	impersonate(Credentials credentials) Logs in the same workspace with the given credentials.
void	importXML(String parentAbsPath, InputStream in, int uuidBehavior) Parses the given input stream as an XML document and processes the SAX events using the ContentHandler returned by Session.getImportContentHandler(String, int).
boolean	itemExists(String absPath) Calls getItem(String) with the given path and returns true if the call succeeds.
void	logout() Clears the local namespace mappings.
boolean	nodeExists(String absPath) Checks whether a node with the given absolute path exists.
boolean	propertyExists(String absPath) Checks whether a property with the given absolute path exists.
void	removeItem(String absPath) Removes the identified item.
void	setNamespacePrefix(String prefix, String uri) Modifies the session local namespace mappings to contain the given prefix to URI mapping.

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.jcr.Session

addLockToken, checkPermission, getAccessControlManager, getAttribute, getAttributeNames, getImportContentHandler, getLockTokens, getNodeByIdentifier, getNodeByUUID, getRepository, getRetentionManager, getRootNode, getUserID, getValueFactory, getWorkspace, hasCapability, hasPendingChanges, hasPermission, isLive, move, refresh, removeLockToken, save

Constructor Detail

AbstractSession

public AbstractSession()

Method Detail

logout

public void logout()

Clears the local namespace mappings. Subclasses that for example want to participate in a session pools should remember to call super.logout() when overriding this method to avoid namespace mappings to be carried over to a new session.

Specified by:

logout in interface Session

getNamespacePrefix

public String getNamespacePrefix(String uri)
                          throws NamespaceException,
                                 RepositoryException

Returns the namespace prefix mapped to the given URI. The mapping is added to the set of session-local namespace mappings unless it already exists there.

This behaviour is based on JSR 283 (JCR 2.0), but remains backwards compatible with JCR 1.0.

Specified by:

getNamespacePrefix in interface Session

Parameters:

uri - namespace URI

Returns:

namespace prefix

Throws:

NamespaceException - if the namespace is not found

RepositoryException - if a repository error occurs

getNamespaceURI

public String getNamespaceURI(String prefix)
                       throws NamespaceException,
                              RepositoryException

Returns the namespace URI mapped to the given prefix. The mapping is added to the set of session-local namespace mappings unless it already exists there.

This behaviour is based on JSR 283 (JCR 2.0), but remains backwards compatible with JCR 1.0.

Specified by:

getNamespaceURI in interface Session

Parameters:

prefix - namespace prefix

Returns:

namespace URI

Throws:

NamespaceException - if the namespace is not found

RepositoryException - if a repository error occurs

getNamespacePrefixes

public String[] getNamespacePrefixes()
                              throws RepositoryException

Returns the prefixes of all known namespace mappings. All global mappings not already included in the local set of namespace mappings are added there.

This behaviour is based on JSR 283 (JCR 2.0), but remains backwards compatible with JCR 1.0.

Specified by:

getNamespacePrefixes in interface Session

Returns:

namespace prefixes

Throws:

RepositoryException - if a repository error occurs

setNamespacePrefix

public void setNamespacePrefix(String prefix,
                               String uri)
                        throws NamespaceException,
                               RepositoryException

Modifies the session local namespace mappings to contain the given prefix to URI mapping.

This behaviour is based on JSR 283 (JCR 2.0), but remains backwards compatible with JCR 1.0.

Specified by:

setNamespacePrefix in interface Session

Parameters:

prefix - namespace prefix

uri - namespace URI

Throws:

NamespaceException - if the mapping is illegal

RepositoryException - if a repository error occurs

exportDocumentView

public void exportDocumentView(String path,
                               ContentHandler handler,
                               boolean skipBinary,
                               boolean noRecurse)
                        throws PathNotFoundException,
                               SAXException,
                               RepositoryException

Generates a document view export using a DocumentViewExporter instance.

Specified by:

exportDocumentView in interface Session

Parameters:

path - of the node to be exported

handler - handler for the SAX events of the export

skipBinary - whether binary values should be skipped

noRecurse - whether to export just the identified node

Throws:

PathNotFoundException - if a node at the given path does not exist

SAXException - if the SAX event handler failed

RepositoryException - if another error occurs

exportSystemView

public void exportSystemView(String path,
                             ContentHandler handler,
                             boolean skipBinary,
                             boolean noRecurse)
                      throws PathNotFoundException,
                             SAXException,
                             RepositoryException

Generates a system view export using a SystemViewExporter instance.

Specified by:

exportSystemView in interface Session

Parameters:

path - of the node to be exported

handler - handler for the SAX events of the export

skipBinary - whether binary values should be skipped

noRecurse - whether to export just the identified node

Throws:

PathNotFoundException - if a node at the given path does not exist

SAXException - if the SAX event handler failed

RepositoryException - if another error occurs

exportDocumentView

public void exportDocumentView(String absPath,
                               OutputStream out,
                               boolean skipBinary,
                               boolean noRecurse)
                        throws IOException,
                               RepositoryException

Calls Session.exportDocumentView(String, ContentHandler, boolean, boolean) with the given arguments and a ContentHandler that serializes SAX events to the given output stream.

Specified by:

exportDocumentView in interface Session

Parameters:

absPath - passed through

out - output stream to which the SAX events are serialized

skipBinary - passed through

noRecurse - passed through

Throws:

IOException - if the SAX serialization failed

RepositoryException - if another error occurs

exportSystemView

public void exportSystemView(String absPath,
                             OutputStream out,
                             boolean skipBinary,
                             boolean noRecurse)
                      throws IOException,
                             RepositoryException

Calls Session.exportSystemView(String, ContentHandler, boolean, boolean) with the given arguments and a ContentHandler that serializes SAX events to the given output stream.

Specified by:

exportSystemView in interface Session

Parameters:

absPath - passed through

out - output stream to which the SAX events are serialized

skipBinary - passed through

noRecurse - passed through

Throws:

IOException - if the SAX serialization failed

RepositoryException - if another error occurs

importXML

public void importXML(String parentAbsPath,
                      InputStream in,
                      int uuidBehavior)
               throws IOException,
                      InvalidSerializedDataException,
                      RepositoryException

Parses the given input stream as an XML document and processes the SAX events using the ContentHandler returned by Session.getImportContentHandler(String, int).

Specified by:

importXML in interface Session

Parameters:

parentAbsPath - passed through

in - input stream to be parsed as XML and imported

uuidBehavior - passed through

Throws:

IOException - if an I/O error occurs

InvalidSerializedDataException - if an XML parsing error occurs

RepositoryException - if a repository error occurs

getItem

public Item getItem(String absPath)
             throws PathNotFoundException,
                    RepositoryException

Returns the node or property at the given path.

The default implementation:

• Returns the root node if the given path is "/"
• Delegates to Session.getNodeByIdentifier(String) for identifier paths
• Throws a PathNotFoundException if the given path does not start with a slash.
• Calls Node.getNode(String) on the root node with the part of the given path after the first slash
• Calls Node.getProperty(String) similarly in case the above call fails with a PathNotFoundException

Specified by:

getItem in interface Session

Parameters:

absPath - absolute path

Returns:

the node or property with the given path

Throws:

PathNotFoundException - if the given path is invalid or not found

RepositoryException - if another error occurs

See Also:

Session.getItem(String)

itemExists

public boolean itemExists(String absPath)
                   throws RepositoryException

Calls getItem(String) with the given path and returns true if the call succeeds. Returns false if a PathNotFoundException was thrown. Other exceptions are passed through.

Specified by:

itemExists in interface Session

Parameters:

absPath - absolute path

Returns:

true if an item exists at the given path, false otherwise

Throws:

RepositoryException - if an error occurs

See Also:

Session.itemExists(String)

removeItem

public void removeItem(String absPath)
                throws RepositoryException

Removes the identified item. Implemented by calling Item.remove() on the item removed by getItem(String).

Specified by:

removeItem in interface Session

Parameters:

absPath - An absolute path of the item to be removed

Throws:

RepositoryException - if the item can not be removed

See Also:

Session.removeItem(String)

getNode

public Node getNode(String absPath)
             throws RepositoryException

Returns the node with the given absolute path.

Specified by:

getNode in interface Session

Parameters:

absPath - absolute path

Returns:

node at the given path

Throws:

RepositoryException - if the node can not be accessed

See Also:

Session.getNode(String)

nodeExists

public boolean nodeExists(String absPath)
                   throws RepositoryException

Checks whether a node with the given absolute path exists.

Specified by:

nodeExists in interface Session

Parameters:

absPath - absolute path

Returns:

true if a node with the given path exists, false otherwise

Throws:

RepositoryException - if the path is invalid

See Also:

Session.nodeExists(String)

getProperty

public Property getProperty(String absPath)
                     throws RepositoryException

Returns the property with the given absolute path.

Specified by:

getProperty in interface Session

Parameters:

absPath - absolute path

Returns:

node at the given path

Throws:

RepositoryException - if the property can not be accessed

See Also:

Session.getProperty(String)

propertyExists

public boolean propertyExists(String absPath)
                       throws RepositoryException

Checks whether a property with the given absolute path exists.

Specified by:

propertyExists in interface Session

Parameters:

absPath - absolute path

Returns:

true if a property with the given path exists, false otherwise

Throws:

RepositoryException - if the path is invalid

See Also:

Session.propertyExists(String)

impersonate

public Session impersonate(Credentials credentials)
                    throws RepositoryException

Logs in the same workspace with the given credentials.

The default implementation:

• Retrieves the Repository instance using Session.getRepository()
• Retrieves the current workspace using Session.getWorkspace()
• Retrieves the name of the current workspace using Workspace.getName()
• Calls Repository.login(Credentials, String) on the retrieved repository with the given credentials and the retrieved workspace name.

Specified by:

impersonate in interface Session

Parameters:

credentials - login credentials

Returns:

logged in session

Throws:

RepositoryException - if an error occurs