Package org.odpi.openmetadata.frameworks.integration.filelistener

Class FilesListenerManager

java.lang.Object

org.odpi.openmetadata.frameworks.integration.filelistener.FilesListenerManager

public class FilesListenerManager
extends Object

FilesListenerManager uses the Apache Commons IO capabilities to support the ability for an Integration Connector to monitor changes in the file system. The implementation is a thin wrapper around the Apache Commons IO to allow the implementation to be swapped for other types of file system monitors.

Constructor Summary

Constructors

Constructor	Description
FilesListenerManager(AuditLog auditLog, String connectorName)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	disconnect()	Shutdown file monitoring
void	registerDirectoryListener(FileDirectoryListenerInterface listener, File directoryToMonitor, FileFilter fileFilter)	Register a listener object that will be called each time a file is created, changed or deleted in a specific root directory.
void	registerDirectoryTreeListener(FileDirectoryListenerInterface listener, File directoryToMonitor, FileFilter fileFilter)	Register a listener object that will be called each time a file is created, changed or deleted in a specific root directory and any of its subdirectories.
void	registerFileListener(FileListenerInterface listener, File fileToMonitor)	Register a listener object that will be called each time a specific file is created, changed or deleted.
void	unregisterDirectoryListener(FileDirectoryListenerInterface listener, File directoryToMonitor)	Unregister a listener object for the directory.
void	unregisterDirectoryTreeListener(FileDirectoryListenerInterface listener, File directoryToMonitor)	Unregister a listener object for the directory.
void	unregisterFileListener(FileListenerInterface listener, File fileToMonitor)	Unregister a listener object that will be called each time a specific file is created, changed or deleted.
void	validateParameter(Object object, String nameParameter, String methodName)	Throw an exception if the supplied parameter is null

Methods inherited from class java.lang.Object

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

Constructor Details

FilesListenerManager

public FilesListenerManager(AuditLog auditLog,
 String connectorName)

Constructor.

Parameters:

auditLog - logging destination

connectorName - name of the connector

Method Details

registerFileListener

public void registerFileListener(FileListenerInterface listener,
 File fileToMonitor)
                          throws InvalidParameterException

Register a listener object that will be called each time a specific file is created, changed or deleted.

Parameters:

listener - listener object

fileToMonitor - name of the file to monitor

Throws:

InvalidParameterException - one of the parameters is null or invalid.

unregisterFileListener

public void unregisterFileListener(FileListenerInterface listener,
 File fileToMonitor)
                            throws InvalidParameterException

Unregister a listener object that will be called each time a specific file is created, changed or deleted.

Parameters:

listener - listener object

fileToMonitor - name of the file to unregister

Throws:

InvalidParameterException - one of the parameters is null or invalid.

registerDirectoryListener

public void registerDirectoryListener(FileDirectoryListenerInterface listener,
 File directoryToMonitor,
 FileFilter fileFilter)
                               throws InvalidParameterException

Register a listener object that will be called each time a file is created, changed or deleted in a specific root directory. The file filter lets you request that only certain types of files are returned.

Parameters:

listener - listener object

directoryToMonitor - details of the file directory to monitor

fileFilter - a file filter implementation that restricts the files/directories that will be returned to the listener

Throws:

InvalidParameterException - one of the parameters is null or invalid.

unregisterDirectoryListener

public void unregisterDirectoryListener(FileDirectoryListenerInterface listener,
 File directoryToMonitor)
                                 throws InvalidParameterException

Unregister a listener object for the directory.

Parameters:

listener - listener object

directoryToMonitor - details of the file directory unregister

Throws:

InvalidParameterException - one of the parameters is null or invalid.

registerDirectoryTreeListener

public void registerDirectoryTreeListener(FileDirectoryListenerInterface listener,
 File directoryToMonitor,
 FileFilter fileFilter)
                                   throws InvalidParameterException

Register a listener object that will be called each time a file is created, changed or deleted in a specific root directory and any of its subdirectories. The file filter lets you request that only certain types of files and/or directories are returned.

Parameters:

listener - listener object

directoryToMonitor - details of the root file directory to monitor from

fileFilter - a file filter implementation that restricts the files/directories that will be returned to the listener

Throws:

InvalidParameterException - one of the parameters is null or invalid.

unregisterDirectoryTreeListener

public void unregisterDirectoryTreeListener(FileDirectoryListenerInterface listener,
 File directoryToMonitor)
                                     throws InvalidParameterException

Unregister a listener object for the directory.

Parameters:

listener - listener object

directoryToMonitor - details of the root file directory to unregister

Throws:

InvalidParameterException - one of the parameters is null or invalid.

disconnect

public void disconnect()
                throws ConnectorCheckedException

Shutdown file monitoring

Throws:

ConnectorCheckedException - something failed in the super class

validateParameter

public void validateParameter(Object object,
 String nameParameter,
 String methodName)
                       throws InvalidParameterException

Throw an exception if the supplied parameter is null

Parameters:

object - object to validate

nameParameter - name of the parameter that passed the object.

methodName - name of the method making the call.

Throws:

InvalidParameterException - the object is null