Package de.akquinet.jbosscc.guttenbase.utils

Class Util

java.lang.Object

de.akquinet.jbosscc.guttenbase.utils.Util

public abstract class Util
extends Object

Collection of utility methods.

© 2012-2034 akquinet tech@spree

Author:

M. Dahm

Field Summary

Fields

Modifier and Type	Field	Description
static Class<?>	ByteArrayClass
static int	DEFAULT_BUFFER_SIZE

Constructor Summary

Constructors

Constructor	Description
Util()

Method Summary

Modifier and Type	Method	Description
static void	copy(InputStream input, OutputStream output)
static <T> T	copyObject(Class<T> clazz, T sourceObject)	Create deep copy of object.
static void	deleteDirectory(File directory)
static String	formatTime(long millis)
static <T> T	fromByteArray(Class<T> clazz, byte[] byteArray)	Deserialize from byte array
static <T> T	fromInputStream(Class<T> clazz, InputStream inputStream)	Deserialize from input stream
static InputStream	getResourceAsStream(String resource)
static String	getStringFromStream(InputStream inputStream)
static boolean	isWindows()
static List<String>	parseSelectedColumns(String sql)
static List<String>	readLinesFromFile(String resourceName, String encoding)	Read all non-empty lines for File and remove and trim them.
static List<String>	readLinesFromStream(InputStream inputStream, String encoding)	Read all non-empty lines and remove and trim them.
static byte[]	toByteArray(Object sourceObject)	Serialize into byte array
static String	trim(String src)

Methods inherited from class java.lang.Object

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

Field Detail

ByteArrayClass

public static final Class<?> ByteArrayClass

DEFAULT_BUFFER_SIZE

public static final int DEFAULT_BUFFER_SIZE

See Also:

Constant Field Values

Constructor Detail

Util

public Util()

Method Detail

readLinesFromFile

public static List<String> readLinesFromFile(String resourceName,
                                             String encoding)

Read all non-empty lines for File and remove and trim them.

Parameters:

resourceName - Text file in CLASSPATH

Returns:

array of strings

getResourceAsStream

public static InputStream getResourceAsStream(String resource)

readLinesFromStream

public static List<String> readLinesFromStream(InputStream inputStream,
                                               String encoding)

Read all non-empty lines and remove and trim them.

Parameters:

inputStream - UTF8-encoded stream to read data from

Returns:

list of strings

trim

public static String trim(String src)

copyObject

public static <T> T copyObject(Class<T> clazz,
                               T sourceObject)

Create deep copy of object.

toByteArray

public static byte[] toByteArray(Object sourceObject)
                          throws IOException

Serialize into byte array

Throws:

IOException

fromByteArray

public static <T> T fromByteArray(Class<T> clazz,
                                  byte[] byteArray)
                           throws Exception

Deserialize from byte array

Throws:

Exception

fromInputStream

public static <T> T fromInputStream(Class<T> clazz,
                                    InputStream inputStream)
                             throws Exception

Deserialize from input stream

Throws:

Exception

copy

public static void copy(InputStream input,
                        OutputStream output)
                 throws IOException

Throws:

IOException

formatTime

public static String formatTime(long millis)

deleteDirectory

public static void deleteDirectory(File directory)

getStringFromStream

public static String getStringFromStream(InputStream inputStream)
                                  throws IOException

Throws:

IOException

isWindows

public static boolean isWindows()

parseSelectedColumns

public static List<String> parseSelectedColumns(String sql)

Returns:

uppercased list of columns in SELECT statement