org.modeshape.graph.request
Class LockBranchRequest

java.lang.Object
  org.modeshape.graph.request.Request
      org.modeshape.graph.request.ChangeRequest
          org.modeshape.graph.request.LockBranchRequest

All Implemented Interfaces:

Serializable, Cloneable

public class LockBranchRequest
extends ChangeRequest

Instruction to lock an existing node or branch. Connectors that do not support locking must ignore this request.

See Also:

Serialized Form

Nested Class Summary

static class

LockBranchRequest.LockScope

Constructor Summary

LockBranchRequest(Location at, String workspaceName, LockBranchRequest.LockScope isDeep, long lockTimeoutInMillis)
Create a request to lock the node or branch at the supplied location.

Method Summary

Location	at() Get the location defining the node that is to be read.
void	cancel() Cancel this request.
Location	changedLocation() Get the location of the top-most node that is to be changed by this request.
String	changedWorkspace() Get the name of the workspace that was changed by this request.
boolean	changes(String workspace, Path path) Determine if this request changes the branch at the given path.
LockBranchRequest	clone() This method does not clone the results.
boolean	equals(Object obj)
Location	getActualLocation() Get the actual location of the node that was locked.
int	hashCode()
String	inWorkspace() Get the name of the workspace in which the node exists.
boolean	isReadOnly() Return whether this request only reads information.
LockBranchRequest.LockScope	lockScope() Get whether the lock should include all of the descendants of the node as well as the node itself
long	lockTimeoutInMillis() Gets the maximum length of the lock in milliseconds
void	setActualLocation(Location actualLocation) Sets the actual and complete location of the node being locked.
String	toString()

Methods inherited from class org.modeshape.graph.request.Request

checkNotFrozen, freeze, getError, hasError, isCancelled, isFrozen, setError, setLatchForFreezing

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LockBranchRequest

public LockBranchRequest(Location at,
                         String workspaceName,
                         LockBranchRequest.LockScope isDeep,
                         long lockTimeoutInMillis)

Create a request to lock the node or branch at the supplied location.

Parameters:

at - the location of the node to be read

workspaceName - the name of the workspace containing the node

isDeep - whether the lock should be deep (i.e., should include all of the node's descendants)

lockTimeoutInMillis - the number of milliseconds that the lock should last before the lock times out; zero (0) indicates that the connector default should be used

Throws:

IllegalArgumentException - if the location or workspace name is null

Method Detail

isReadOnly

public boolean isReadOnly()

Return whether this request only reads information.

Specified by:

isReadOnly in class Request

Returns:

true if this request reads information, or false if it requests that the repository content be changed in some way

See Also:

Request.isReadOnly()

at

public Location at()

Get the location defining the node that is to be read.

Returns:

the location of the node; never null

inWorkspace

public String inWorkspace()

Get the name of the workspace in which the node exists.

Returns:

the name of the workspace; never null

lockScope

public LockBranchRequest.LockScope lockScope()

Get whether the lock should include all of the descendants of the node as well as the node itself

Returns:

LockBranchRequest.LockScope.SELF_AND_DESCENDANTS if the lock should include all of the descendants of the node, LockBranchRequest.LockScope.SELF_ONLY otherwise

lockTimeoutInMillis

public long lockTimeoutInMillis()

Gets the maximum length of the lock in milliseconds

Returns:

the number of milliseconds that the lock should last before the lock times out; zero (0) indicates that the connector default should be used

setActualLocation

public void setActualLocation(Location actualLocation)

Sets the actual and complete location of the node being locked. This method must be called when processing the request, and the actual location must have a path.

Parameters:

actualLocation - the actual location of the node before being locked

Throws:

IllegalArgumentException - if the either location is null or is missing its path, if the old location is not equal to the current location

IllegalStateException - if the request is frozen

getActualLocation

public Location getActualLocation()

Get the actual location of the node that was locked.

Returns:

the actual location of the node being locked, or null if the actual location was not set

changes

public boolean changes(String workspace,
                       Path path)

Determine if this request changes the branch at the given path.

Specified by:

changes in class ChangeRequest

Parameters:

workspace - the name of the workspace; may not be null

path - the path; may not be null

Returns:

true if this request changes a node under the given path

See Also:

ChangeRequest.changes(java.lang.String, org.modeshape.graph.property.Path)

changedLocation

public Location changedLocation()

Get the location of the top-most node that is to be changed by this request. If this request has been completed, this location will always have a path.

Specified by:

changedLocation in class ChangeRequest

Returns:

the location changed by this request

See Also:

ChangeRequest.changedLocation()

changedWorkspace

public String changedWorkspace()

Get the name of the workspace that was changed by this request.

Specified by:

changedWorkspace in class ChangeRequest

Returns:

the name of the workspace changed by this request

See Also:

ChangeRequest.changedWorkspace()

cancel

public void cancel()

Cancel this request. After this method is called, the cancellation flag is set, and any current or future processing of the request may be affected by the cancellation. (Note however, that processors may choose to not respect this request.)

This method is safe to be called by different threads.

Overrides:

cancel in class Request

See Also:

Request.cancel()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

See Also:

Object.hashCode()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

See Also:

Object.equals(java.lang.Object)

toString

public String toString()

Overrides:

toString in class Object

See Also:

Object.toString()

clone

public LockBranchRequest clone()

This method does not clone the results.

This method does not clone the results.

Specified by:

clone in class ChangeRequest

See Also:

ChangeRequest.clone()