|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object org.jboss.dna.repository.sequencer.StreamSequencerAdapter
public class StreamSequencerAdapter
An adapter class that wraps a StreamSequencer
instance to be a Sequencer
.
Constructor Summary | |
---|---|
StreamSequencerAdapter(StreamSequencer streamSequencer)
|
Method Summary | |
---|---|
void |
execute(Node input,
String sequencedPropertyName,
NetChangeObserver.NetChange changes,
Set<RepositoryNodePath> outputPaths,
SequencerContext context,
Problems problems)
Execute the sequencing operation on the supplied node, which has recently been created or changed. |
SequencerConfig |
getConfiguration()
Return the configuration for this component, as supplied to the last Component.setConfiguration(ComponentConfig) invocation. |
void |
setConfiguration(SequencerConfig configuration)
This method allows the implementation to initialize and configure itself using the supplied ComponentConfig
information, and is called prior to any other class to this object. |
Methods inherited from class java.lang.Object |
---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public StreamSequencerAdapter(StreamSequencer streamSequencer)
Method Detail |
---|
public SequencerConfig getConfiguration()
Component.setConfiguration(ComponentConfig)
invocation.
getConfiguration
in interface Component<SequencerConfig>
public void setConfiguration(SequencerConfig configuration)
ComponentConfig
information, and is called prior to any other class to this object. When this method is called, the implementation must
maintain a reference to the supplied configuration (which should then be returned in Component.getConfiguration()
.
setConfiguration
in interface Component<SequencerConfig>
configuration
- the configuration for the componentpublic void execute(Node input, String sequencedPropertyName, NetChangeObserver.NetChange changes, Set<RepositoryNodePath> outputPaths, SequencerContext context, Problems problems) throws SequencerException
saving
any changes made by
this sequencer, and closing any other acquired resources, even in the case of exceptions.
The SequencingService
determines the sequencers that should be executed by monitoring the changes to one or more
workspaces (it registers an Observer
with the RepositoryLibrary
). Changes in those workspaces are
aggregated for each transaction, and organized into changes for each node
. The SequencingService then
determines for each set of changes to a node
the set of full paths to the properties that have changed
and whether those paths match
the sequencer's
path expressions
. Each path expression produces the path to the output node,
and these output paths are accumulated and (with the original node that changed, the node change summary, and other
information) supplied to the sequencer via this method.
It is possible that a sequencer is configured to apply to multiple properties on a node. So, in cases where multiple properties are changed on a single node (within a single repository transaction), the sequencer will only be executed once. Also, in such cases the sequencer's configuration may imply multiple output nodes, so it is left to the sequencer to define the behavior in such cases.
execute
in interface Sequencer
input
- the node that has recently been created or changed; never nullsequencedPropertyName
- the name of the property that caused this sequencer to be executed; never null and never emptychanges
- the immutable summary of changes that occurred on the input
node within the transaction; never
nulloutputPaths
- the paths to the nodes where the sequencing content should be placed; never null and never empty, but
the set may contain paths for non-existent nodes or may reference the input
nodecontext
- the context in which this sequencer is executing; never nullproblems
- the interface used for recording problems; never null
SequencerException
- if there is an error in this sequencer
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |