org.quartz.xml
Class XMLSchedulingDataProcessor

java.lang.Object
  org.quartz.xml.XMLSchedulingDataProcessor

All Implemented Interfaces:

ErrorHandler

public class XMLSchedulingDataProcessor
extends Object
implements ErrorHandler

Parses an XML file that declares Jobs and their schedules (Triggers), and processes the related data. The xml document must conform to the format defined in "job_scheduling_data_2_0.xsd" The same instance can be used again and again, however a single instance is not thread-safe.

Since:

Quartz 1.8

Author:

James House, Past contributions from Chris Bonham, Past contributions from pl47ypus

Field Summary

protected ClassLoadHelper	classLoadHelper
protected List<String>	jobGroupsToDelete
protected List<String>	jobGroupsToNeverDelete
protected List<JobKey>	jobsToDelete
protected List<JobDetail>	loadedJobs
protected List<MutableTrigger>	loadedTriggers
static String	QUARTZ_NS
static String	QUARTZ_SCHEMA_WEB_URL
static String	QUARTZ_SYSTEM_ID_JAR_PREFIX
static String	QUARTZ_XML_DEFAULT_FILE_NAME
static String	QUARTZ_XSD_PATH_IN_JAR
protected List<String>	triggerGroupsToDelete
protected List<String>	triggerGroupsToNeverDelete
protected List<TriggerKey>	triggersToDelete
protected Collection<Exception>	validationExceptions

Constructor Summary

XMLSchedulingDataProcessor(ClassLoadHelper clh)
Constructor for JobSchedulingDataLoader.

Method Summary

void	addJobGroupToNeverDelete(String group) Add the given group to the list of job groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.
protected void	addJobToSchedule(JobDetail job)
void	addTriggerGroupToNeverDelete(String group) Add the given group to the list of trigger groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.
protected void	addTriggerToSchedule(MutableTrigger trigger)
protected void	addValidationException(SAXException e) Adds a detected validation exception.
protected void	clearValidationExceptions() Resets the the number of detected validation exceptions.
void	error(SAXParseException e) ErrorHandler interface.
protected void	executePreProcessCommands(Scheduler scheduler)
void	fatalError(SAXParseException e) ErrorHandler interface.
protected Boolean	getBoolean(XPath xpathToElement, String elementName, Document document)
protected InputStream	getInputStream(String fileName) Returns an InputStream from the fileName as a resource.
List<String>	getJobGroupsToNeverDelete() Get the (unmodifiable) list of job groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.
protected List<JobDetail>	getLoadedJobs() Returns a List of jobs loaded from the xml file.
protected List<MutableTrigger>	getLoadedTriggers() Returns a List of triggers loaded from the xml file.
protected String	getSystemIdForFileName(String fileName) For the given fileName, attempt to expand it to its full path for use as a system id.
List<String>	getTriggerGroupsToNeverDelete() Get the (unmodifiable) list of trigger groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.
protected String	getTrimmedToNullString(XPath xpathToElement, String elementName, Node parentNode)
protected URL	getURL(String fileName) Returns an URL from the fileName as a resource.
protected void	initDocumentParser() Initializes the XML parser.
boolean	isIgnoreDuplicates() If true (and OverWriteExistingData is false) then any job/triggers encountered in this file that have names that already exist in the scheduler will be ignored, and no error will be produced.
boolean	isOverWriteExistingData() Whether the existing scheduling data (with same identifiers) will be overwritten.
protected void	maybeThrowValidationException() Throws a ValidationException if the number of validationExceptions detected is greater than zero.
protected void	prepForProcessing()
protected void	process(InputSource is)
protected void	processFile() Process the xml file in the default location (a file named "quartz_jobs.xml" in the current working directory).
protected void	processFile(String fileName) Process the xml file named fileName.
protected void	processFile(String fileName, String systemId) Process the xmlfile named fileName with the given system ID.
void	processFileAndScheduleJobs(Scheduler sched, boolean overWriteExistingJobs) Process the xml file in the default location, and schedule all of the jobs defined within it.
void	processFileAndScheduleJobs(String fileName, Scheduler sched) Process the xml file in the given location, and schedule all of the jobs defined within it.
void	processFileAndScheduleJobs(String fileName, String systemId, Scheduler sched) Process the xml file in the given location, and schedule all of the jobs defined within it.
void	processStreamAndScheduleJobs(InputStream stream, String systemId, Scheduler sched) Process the xmlfile named fileName with the given system ID.
boolean	removeJobGroupToNeverDelete(String group) Remove the given group to the list of job groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.
boolean	removeTriggerGroupToNeverDelete(String group) Remove the given group to the list of trigger groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.
protected Object	resolveSchemaSource()
protected void	scheduleJobs(Scheduler sched) Schedules the given sets of jobs and triggers.
void	setIgnoreDuplicates(boolean ignoreDuplicates) If true (and OverWriteExistingData is false) then any job/triggers encountered in this file that have names that already exist in the scheduler will be ignored, and no error will be produced.
protected void	setOverWriteExistingData(boolean overWriteExistingData) Whether the existing scheduling data (with same identifiers) will be overwritten.
void	warning(SAXParseException e) ErrorHandler interface.

Methods inherited from class java.lang.Object

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

Field Detail

QUARTZ_NS

public static final String QUARTZ_NS

See Also:

Constant Field Values

QUARTZ_SCHEMA_WEB_URL

public static final String QUARTZ_SCHEMA_WEB_URL

See Also:

Constant Field Values

QUARTZ_XSD_PATH_IN_JAR

public static final String QUARTZ_XSD_PATH_IN_JAR

See Also:

Constant Field Values

QUARTZ_XML_DEFAULT_FILE_NAME

public static final String QUARTZ_XML_DEFAULT_FILE_NAME

See Also:

Constant Field Values

QUARTZ_SYSTEM_ID_JAR_PREFIX

public static final String QUARTZ_SYSTEM_ID_JAR_PREFIX

See Also:

Constant Field Values

jobGroupsToDelete

protected List<String> jobGroupsToDelete

triggerGroupsToDelete

protected List<String> triggerGroupsToDelete

jobsToDelete

protected List<JobKey> jobsToDelete

triggersToDelete

protected List<TriggerKey> triggersToDelete

loadedJobs

protected List<JobDetail> loadedJobs

loadedTriggers

protected List<MutableTrigger> loadedTriggers

validationExceptions

protected Collection<Exception> validationExceptions

classLoadHelper

protected ClassLoadHelper classLoadHelper

jobGroupsToNeverDelete

protected List<String> jobGroupsToNeverDelete

triggerGroupsToNeverDelete

protected List<String> triggerGroupsToNeverDelete

Constructor Detail

XMLSchedulingDataProcessor

public XMLSchedulingDataProcessor(ClassLoadHelper clh)
                           throws ParserConfigurationException

Constructor for JobSchedulingDataLoader.

Parameters:

clh - class-loader helper to share with digester.

Throws:

ParserConfigurationException - if the XML parser cannot be configured as needed.

Method Detail

initDocumentParser

protected void initDocumentParser()
                           throws ParserConfigurationException

Initializes the XML parser.

Throws:

ParserConfigurationException

resolveSchemaSource

protected Object resolveSchemaSource()

isOverWriteExistingData

public boolean isOverWriteExistingData()

Whether the existing scheduling data (with same identifiers) will be overwritten. If false, and IgnoreDuplicates is not false, and jobs or triggers with the same names already exist as those in the file, an error will occur.

See Also:

isIgnoreDuplicates()

setOverWriteExistingData

protected void setOverWriteExistingData(boolean overWriteExistingData)

Whether the existing scheduling data (with same identifiers) will be overwritten. If false, and IgnoreDuplicates is not false, and jobs or triggers with the same names already exist as those in the file, an error will occur.

See Also:

setIgnoreDuplicates(boolean)

isIgnoreDuplicates

public boolean isIgnoreDuplicates()

If true (and OverWriteExistingData is false) then any job/triggers encountered in this file that have names that already exist in the scheduler will be ignored, and no error will be produced.

See Also:

isOverWriteExistingData()

setIgnoreDuplicates

public void setIgnoreDuplicates(boolean ignoreDuplicates)

If true (and OverWriteExistingData is false) then any job/triggers encountered in this file that have names that already exist in the scheduler will be ignored, and no error will be produced.

See Also:

setOverWriteExistingData(boolean)

addJobGroupToNeverDelete

public void addJobGroupToNeverDelete(String group)

Add the given group to the list of job groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.

removeJobGroupToNeverDelete

public boolean removeJobGroupToNeverDelete(String group)

Remove the given group to the list of job groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.

getJobGroupsToNeverDelete

public List<String> getJobGroupsToNeverDelete()

Get the (unmodifiable) list of job groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.

addTriggerGroupToNeverDelete

public void addTriggerGroupToNeverDelete(String group)

Add the given group to the list of trigger groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.

removeTriggerGroupToNeverDelete

public boolean removeTriggerGroupToNeverDelete(String group)

Remove the given group to the list of trigger groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.

getTriggerGroupsToNeverDelete

public List<String> getTriggerGroupsToNeverDelete()

Get the (unmodifiable) list of trigger groups that will never be deleted by this processor, even if a pre-processing-command to delete the group is encountered.

processFile

protected void processFile()
                    throws Exception

Process the xml file in the default location (a file named "quartz_jobs.xml" in the current working directory).

Throws:

Exception

processFile

protected void processFile(String fileName)
                    throws Exception

Process the xml file named fileName.

Parameters:

fileName - meta data file name.

Throws:

Exception

getSystemIdForFileName

protected String getSystemIdForFileName(String fileName)

For the given fileName, attempt to expand it to its full path for use as a system id.

See Also:

getURL(String), processFile(), processFile(String), processFileAndScheduleJobs(Scheduler, boolean), processFileAndScheduleJobs(String, org.quartz.Scheduler)

getURL

protected URL getURL(String fileName)

Returns an URL from the fileName as a resource.

Parameters:

fileName - file name.

Returns:

an URL from the fileName as a resource.

prepForProcessing

protected void prepForProcessing()

processFile

protected void processFile(String fileName,
                           String systemId)
                    throws ValidationException,
                           ParserConfigurationException,
                           SAXException,
                           IOException,
                           SchedulerException,
                           ClassNotFoundException,
                           ParseException,
                           XPathException

Process the xmlfile named fileName with the given system ID.

Parameters:

fileName - meta data file name.

systemId - system ID.

Throws:

ValidationException

ParserConfigurationException

SAXException

IOException

SchedulerException

ClassNotFoundException

ParseException

XPathException

processStreamAndScheduleJobs

public void processStreamAndScheduleJobs(InputStream stream,
                                         String systemId,
                                         Scheduler sched)
                                  throws ValidationException,
                                         ParserConfigurationException,
                                         SAXException,
                                         XPathException,
                                         IOException,
                                         SchedulerException,
                                         ClassNotFoundException,
                                         ParseException

Process the xmlfile named fileName with the given system ID.

Parameters:

stream - an input stream containing the xml content.

systemId - system ID.

Throws:

ValidationException

ParserConfigurationException

SAXException

XPathException

IOException

SchedulerException

ClassNotFoundException

ParseException

process

protected void process(InputSource is)
                throws SAXException,
                       IOException,
                       ParseException,
                       XPathException,
                       ClassNotFoundException

Throws:

SAXException

IOException

ParseException

XPathException

ClassNotFoundException

getTrimmedToNullString

protected String getTrimmedToNullString(XPath xpathToElement,
                                        String elementName,
                                        Node parentNode)
                                 throws XPathExpressionException

Throws:

XPathExpressionException

getBoolean

protected Boolean getBoolean(XPath xpathToElement,
                             String elementName,
                             Document document)
                      throws XPathExpressionException

Throws:

XPathExpressionException

processFileAndScheduleJobs

public void processFileAndScheduleJobs(Scheduler sched,
                                       boolean overWriteExistingJobs)
                                throws Exception

Process the xml file in the default location, and schedule all of the jobs defined within it.

Note that we will set overWriteExistingJobs after the default xml is parsed.

Throws:

Exception

processFileAndScheduleJobs

public void processFileAndScheduleJobs(String fileName,
                                       Scheduler sched)
                                throws Exception

Process the xml file in the given location, and schedule all of the jobs defined within it.

Parameters:

fileName - meta data file name.

Throws:

Exception

processFileAndScheduleJobs

public void processFileAndScheduleJobs(String fileName,
                                       String systemId,
                                       Scheduler sched)
                                throws Exception

Process the xml file in the given location, and schedule all of the jobs defined within it.

Parameters:

fileName - meta data file name.

Throws:

Exception

getLoadedJobs

protected List<JobDetail> getLoadedJobs()

Returns a List of jobs loaded from the xml file.

Returns:

a List of jobs.

getLoadedTriggers

protected List<MutableTrigger> getLoadedTriggers()

Returns a List of triggers loaded from the xml file.

Returns:

a List of triggers.

getInputStream

protected InputStream getInputStream(String fileName)

Returns an InputStream from the fileName as a resource.

Parameters:

fileName - file name.

Returns:

an InputStream from the fileName as a resource.

addJobToSchedule

protected void addJobToSchedule(JobDetail job)

addTriggerToSchedule

protected void addTriggerToSchedule(MutableTrigger trigger)

executePreProcessCommands

protected void executePreProcessCommands(Scheduler scheduler)
                                  throws SchedulerException

Throws:

SchedulerException

scheduleJobs

protected void scheduleJobs(Scheduler sched)
                     throws SchedulerException

Schedules the given sets of jobs and triggers.

Parameters:

sched - job scheduler.

Throws:

SchedulerException - if the Job or Trigger cannot be added to the Scheduler, or there is an internal Scheduler error.

warning

public void warning(SAXParseException e)
             throws SAXException

ErrorHandler interface. Receive notification of a warning.

Specified by:

warning in interface ErrorHandler

Parameters:

e - The error information encapsulated in a SAX parse exception.

Throws:

SAXException - Any SAX exception, possibly wrapping another exception.

error

public void error(SAXParseException e)
           throws SAXException

ErrorHandler interface. Receive notification of a recoverable error.

Specified by:

error in interface ErrorHandler

Parameters:

e - The error information encapsulated in a SAX parse exception.

Throws:

SAXException - Any SAX exception, possibly wrapping another exception.

fatalError

public void fatalError(SAXParseException e)
                throws SAXException

ErrorHandler interface. Receive notification of a non-recoverable error.

Specified by:

fatalError in interface ErrorHandler

Parameters:

e - The error information encapsulated in a SAX parse exception.

Throws:

SAXException - Any SAX exception, possibly wrapping another exception.

addValidationException

protected void addValidationException(SAXException e)

Adds a detected validation exception.

Parameters:

e - SAX exception.

clearValidationExceptions

protected void clearValidationExceptions()

Resets the the number of detected validation exceptions.

maybeThrowValidationException

protected void maybeThrowValidationException()
                                      throws ValidationException

Throws a ValidationException if the number of validationExceptions detected is greater than zero.

Throws:

ValidationException - DTD validation exception.