org.apache.ambari.server.view

Class ViewArchiveUtility

java.lang.Object

org.apache.ambari.server.view.ViewArchiveUtility

public class ViewArchiveUtility
extends Object

Helper class for basic view archive utility.

Constructor Summary

Constructors

Constructor and Description
ViewArchiveUtility()

Method Summary

Modifier and Type	Method and Description
File	getFile(String path) Get a new file instance for the given path.
FileOutputStream	getFileOutputStream(File file) Get a new file output stream for the given file.
JarInputStream	getJarFileStream(File file) Get a new jar file stream from the given file.
ViewConfig	getViewConfigFromArchive(File archiveFile) Get the view configuration from the given archive file.
ViewConfig	getViewConfigFromExtractedArchive(String archivePath, boolean validate) Get the view configuration from the extracted archive file.
protected void	validateConfig(InputStream configStream) Validate the given view descriptor file against the view schema.

Methods inherited from class java.lang.Object

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

Constructor Detail

ViewArchiveUtility

public ViewArchiveUtility()

Method Detail

getViewConfigFromArchive

public ViewConfig getViewConfigFromArchive(File archiveFile)
                                    throws JAXBException,
                                           IOException

Get the view configuration from the given archive file.

Parameters:

archiveFile - the archive file

Returns:

the associated view configuration

Throws:

JAXBException - if xml is malformed

IOException

getViewConfigFromExtractedArchive

public ViewConfig getViewConfigFromExtractedArchive(String archivePath,
                                                    boolean validate)
                                             throws JAXBException,
                                                    IOException,
                                                    SAXException

Get the view configuration from the extracted archive file.

Parameters:

archivePath - path to extracted archive

validate - indicates whether or not the view configuration should be validated

Returns:

the associated view configuration

Throws:

JAXBException - if xml is malformed

IOException - if xml can not be read

SAXException - if the validation fails

getFile

public File getFile(String path)

Get a new file instance for the given path.

Parameters:

path - the path

Returns:

a new file instance

getFileOutputStream

public FileOutputStream getFileOutputStream(File file)
                                     throws FileNotFoundException

Get a new file output stream for the given file.

Parameters:

file - the file

Returns:

a new file output stream

Throws:

FileNotFoundException

getJarFileStream

public JarInputStream getJarFileStream(File file)
                                throws IOException

Get a new jar file stream from the given file.

Parameters:

file - the file

Returns:

a new jar file stream

Throws:

IOException

validateConfig

protected void validateConfig(InputStream configStream)
                       throws SAXException,
                              IOException

Validate the given view descriptor file against the view schema.

Parameters:

configStream - input stream of view descriptor file to be validated

Throws:

SAXException - if the validation fails

IOException - if the descriptor file can not be read