|
CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
|||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectcom.tangosol.util.Base
com.tangosol.util.BitHelper
com.tangosol.util.ExternalizableHelper
com.tangosol.net.AbstractPriorityTask
com.tangosol.util.processor.PriorityProcessor
public class PriorityProcessor
PriorityProcessor is used to explicitly control the scheduling priority and timeouts for execution of EntryProcessor-based methods.
For example, let's assume that there is a cache that belongs to a partitioned cache service configured with a task-timeout of 5 seconds. Also assume that there is a particular PreloadRequest processor that could take much longer to complete due to a large amount of database related processing. Then we could override the default task timeout value by using the PriorityProcessor as follows:PreloadRequest procStandard = PreloadRequest.INSTANCE; PriorityProcessor procPriority = new PriorityProcessor(procStandard); procPriority.setExecutionTimeoutMillis(PriorityTask.TIMEOUT_NONE); cache.processAll(setKeys, procPriority);This is an advanced feature which should be used judiciously.
Field Summary |
---|
Fields inherited from interface com.tangosol.net.PriorityTask |
---|
SCHEDULE_FIRST, SCHEDULE_IMMEDIATE, SCHEDULE_STANDARD, TIMEOUT_DEFAULT, TIMEOUT_NONE |
Constructor Summary | |
---|---|
PriorityProcessor()
Default constructor (necessary for the ExternalizableLite interface). |
|
PriorityProcessor(InvocableMap.EntryProcessor processor)
Construct a PriorityProcessor. |
Method Summary | |
---|---|
InvocableMap.EntryProcessor |
getProcessor()
Obtain the underlying processor. |
Object |
process(InvocableMap.Entry entry)
Process a Map.Entry object. |
Map |
processAll(Set setEntries)
Process a Set of InvocableMap.Entry objects. |
void |
readExternal(DataInput in)
Restore the contents of this object by loading the object's state from the passed DataInput object. |
void |
readExternal(PofReader in)
Restore the contents of a user type instance by reading its state using the specified PofReader object. |
String |
toString()
Return a human-readable description for this PriorityProcessor. |
void |
writeExternal(DataOutput out)
Save the contents of this object by storing the object's state into the passed DataOutput object. |
void |
writeExternal(PofWriter out)
Save the contents of a POF user type instance by writing its state using the specified PofWriter object. |
Methods inherited from class com.tangosol.net.AbstractPriorityTask |
---|
getExecutionTimeoutMillis, getRequestTimeoutMillis, getSchedulingPriority, runCanceled, setExecutionTimeoutMillis, setRequestTimeoutMillis, setSchedulingPriority |
Methods inherited from class com.tangosol.util.BitHelper |
---|
countBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, toBitString, toBitString, toBitString |
Constructor Detail |
---|
public PriorityProcessor()
public PriorityProcessor(InvocableMap.EntryProcessor processor)
processor
- the processor wrapped by this PriorityProcessorMethod Detail |
---|
public Object process(InvocableMap.Entry entry)
process
in interface InvocableMap.EntryProcessor
entry
- the Entry to process
public Map processAll(Set setEntries)
Map mapResults = new ListMap(); for (Iterator iter = setEntries.iterator(); iter.hasNext(); ) { Entry entry = (Entry) iter.next(); mapResults.put(entry.getKey(), process(entry)); } return mapResults;
processAll
in interface InvocableMap.EntryProcessor
setEntries
- a read-only Set of InvocableMap.Entry objects to
process
public InvocableMap.EntryProcessor getProcessor()
public String toString()
public void readExternal(DataInput in) throws IOException
readExternal
in interface ExternalizableLite
readExternal
in class AbstractPriorityTask
in
- the DataInput stream to read data from in order to restore
the state of this object
IOException
- if an I/O exception occurs
NotActiveException
- if the object is not in its initial
state, and therefore cannot be deserialized intopublic void writeExternal(DataOutput out) throws IOException
writeExternal
in interface ExternalizableLite
writeExternal
in class AbstractPriorityTask
out
- the DataOutput stream to write the state of this object to
IOException
- if an I/O exception occurspublic void readExternal(PofReader in) throws IOException
The AbstractPriorityTask implementation reserves property indexes 0 - 9.
The PriorityProcessor implementation reserves property index 10.
readExternal
in interface PortableObject
readExternal
in class AbstractPriorityTask
in
- the PofReader from which to read the object's state
IOException
- if an I/O error occurspublic void writeExternal(PofWriter out) throws IOException
The AbstractPriorityTask implementation reserves property indexes 0 - 9.
The PriorityProcessor implementation reserves property index 10.
writeExternal
in interface PortableObject
writeExternal
in class AbstractPriorityTask
out
- the PofWriter to which to write the object's state
IOException
- if an I/O error occurs
|
CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
|||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |