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Java Source Code / Java Documentation » Database Client » iSQL Viewer » org.isqlviewer.util

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.isqlviewer.util .BasicUtilities

BasicUtilities
public class BasicUtilities (Code)
	TODO Add BasicUtilities Overview JavaDoc. author: Mark A. Kobold <mkobold at isqlviewer dot com> version: 1.0

Method Summary
public static void	backupFile(File baseFile, File backupFile) Backup a specific file to another file using compression.
public static void	copyReader(Reader in, Writer out) Utility method from moving an inputstream to an outputstream.
public static void	copySelectedCellsToClipBoard(JTable table) Creates a tab delimited text for selected cells of the given JTable.
public static void	copyStream(InputStream in, OutputStream out) Utility method from moving an inputstream to an outputstream.
public static String	createSafeFilename(String fileName) Creates a generally safe file name. This method will hopefully prevent silly errors that can occur by attempting to create a file with illegal characters.
public static XMLReader	createXMLReader(boolean namespaceAware, boolean validating) Helper method for creating an XML reader for parsing XML documents. Parameters: namespaceAware - sets namespace aware property in the XMLReader. Parameters: validating - set the validating property with the XMLReader.
public static boolean	deleteDirectory(File directory) Deletes a directory including all childern. One small problem that is easily overlooked in Java is that you cannot delete a non-empty directory. This method will recursivlely scan the directory for other directories and files and proceed to delete them.
public static int	getCommandMask()
public static boolean	isThreadInterrupted() Helper method for checking if the current thread is interrupted without resetting the interrupted state.
public static void	restoreSystemErr() Utilitiy method to restore System.err to the default FileDescriptor.
public static void	restoreSystemOut() Utilitiy method to restore System.out to the default FileDescriptor.
public static void	sortCollection(Collection<Object> collection) Utility method for sorting collections.
public static void	sortCollection(Collection<Object> collection, Comparator<Object> sorter) Utility method for sorting collections. This will sort a collection based on the comparator given.
public static void	wrapThrowable(Throwable sourceError, Throwable wrappedError) Wraps an exception including the stack trace elements.

Method Detail

backupFile
public static void backupFile(File baseFile, File backupFile) throws IOException(Code)
	Backup a specific file to another file using compression. This will copy the contents of baseFile to backupFile using a GZIPOutputStream such that it will compressed. Parameters: baseFile - the file to create a backup of. Parameters: backupFile - the new destination file for the backup.

copyReader
public static void copyReader(Reader in, Writer out) throws IOException(Code)
	Utility method from moving an inputstream to an outputstream. Pretty basic stuff here every byte read from in is immediately written to out. Parameters: in - InputStream to read from. Parameters: out - OutputStream to write to. throws: IOException - if error occurs while write

copySelectedCellsToClipBoard
public static void copySelectedCellsToClipBoard(JTable table)(Code)
	Creates a tab delimited text for selected cells of the given JTable. Parameters: table - to copy selection from.

copyStream
public static void copyStream(InputStream in, OutputStream out) throws IOException(Code)
	Utility method from moving an inputstream to an outputstream. Pretty basic stuff here every byte read from in is immediately written to out. Parameters: in - InputStream to read from. Parameters: out - OutputStream to write to. throws: IOException - if error occurs while write

createSafeFilename

public static String createSafeFilename(String fileName)(Code)

Creates a generally safe file name.

This method will hopefully prevent silly errors that can occur by attempting to create a file with illegal characters. This method more or less takes all the ASCII symbols and converts them to underscores.

This method more or less is a culmination of what i know to be invalid and or annoying characters to have in a file name on the systems i know.

For *NIX users in paticular so extra precautions are made so that the names of these files will be easier to deal with in shell scripts such that there aren't many characters that will make them difficult when dealing within a given shell, and shouldn't have to resorting to alot of escape sequences.
Parameters:
fqFilename - original filename. String an updated version that should be safe for most systems.

createXMLReader
public static XMLReader createXMLReader(boolean namespaceAware, boolean validating) throws ParserConfigurationException(Code)
	Helper method for creating an XML reader for parsing XML documents. Parameters: namespaceAware - sets namespace aware property in the XMLReader. Parameters: validating - set the validating property with the XMLReader. instance of XMLReader for parsing XML. throws: ParserConfigurationException - if the XMLReader fails to instantiate properly. See Also: SAXParserFactory.setNamespaceAware(boolean) See Also: SAXParserFactory.setValidating(boolean)

deleteDirectory

public static boolean deleteDirectory(File directory)(Code)

Deletes a directory including all childern.

One small problem that is easily overlooked in Java is that you cannot delete a non-empty directory.

This method will recursivlely scan the directory for other directories and files and proceed to delete them. This method should be executed with caution as it provides no safeguards if a directory is accidently deleted.
Parameters:
directory - true if the directory was successfully deleted.

getCommandMask
public static int getCommandMask()(Code)

isThreadInterrupted
public static boolean isThreadInterrupted()(Code)
	Helper method for checking if the current thread is interrupted without resetting the interrupted state. `true` if the calling thread is interrupted.

restoreSystemErr
public static void restoreSystemErr()(Code)
	Utilitiy method to restore System.err to the default FileDescriptor.

restoreSystemOut
public static void restoreSystemOut()(Code)
	Utilitiy method to restore System.out to the default FileDescriptor.

sortCollection
public static void sortCollection(Collection<Object> collection)(Code)
	Utility method for sorting collections. This will sort a collection based on the natural ordering of the objects contained in the collection. Parameters: collection - to be sorted. See Also: BasicUtilities.sortCollection(Collection,Comparator)

sortCollection
public static void sortCollection(Collection<Object> collection, Comparator<Object> sorter)(Code)
	Utility method for sorting collections. This will sort a collection based on the comparator given. If the given comparator is null then naturall based on the objects will be used. Parameters: collection - to be sorted. Parameters: sorter - object that can determine the order of the object in the given collection. See Also: BasicUtilities.sortCollection(Collection)

wrapThrowable
public static void wrapThrowable(Throwable sourceError, Throwable wrappedError)(Code)
	Wraps an exception including the stack trace elements. Parameters: sourceError - that needs to be wrapped. Parameters: wrappedError - new error that is a facade of the sourceError.

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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