org.waarp.common.utility

Class SystemPropertyUtil

java.lang.Object

org.waarp.common.utility.SystemPropertyUtil

public final class SystemPropertyUtil
extends Object

A collection of utility methods to retrieve and parse the values of the Java system properties.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SystemPropertyUtil.Platform Inspired from http://commons.apache.org/lang/api-2.4/org/apache/commons/lang/ SystemUtils.html

Field Summary

Fields

Modifier and Type	Field and Description
static String	FILE_ENCODING
static String	WAARP_DATABASE_CONNECTION_MAX Maximum Connections to the Database.

Method Summary

Modifier and Type	Method and Description
static void	clear(String key) Remove the key of the Java system property with the specified key.
static boolean	contains(String key) Returns true if and only if the system property with the specified key exists.
static void	debug()
static void	debug(PrintStream out) Print to System.out the content of the properties
static String	get(String key) Returns the value of the Java system property with the specified key, while falling back to null if the property access fails.
static boolean	get(String key, boolean def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static int	get(String key, int def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static long	get(String key, long def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static String	get(String key, String def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static boolean	getAndSet(String key, boolean def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static int	getAndSet(String key, int def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static long	getAndSet(String key, long def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static String	getAndSet(String key, String def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static boolean	getBoolean(String key, boolean def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static int	getInt(String key, int def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static long	getLong(String key, long def) Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
static SystemPropertyUtil.Platform	getOS()
static boolean	isFileEncodingCorrect()
static boolean	isMac()
static boolean	isSolaris()
static boolean	isUnix()
static boolean	isWindows()
static void	refresh() Re-retrieves all system properties so that any post-launch properties updates are retrieved.
static boolean	set(String key, boolean def) Set the value of the Java system property with the specified key to the specified default value.
static int	set(String key, int def) Set the value of the Java system property with the specified key to the specified default value.
static long	set(String key, long def) Set the value of the Java system property with the specified key to the specified default value.
static String	set(String key, String def) Set the value of the Java system property with the specified key to the specified default value.

Methods inherited from class java.lang.Object

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

Field Detail

FILE_ENCODING

public static final String FILE_ENCODING

See Also:

Constant Field Values

WAARP_DATABASE_CONNECTION_MAX

public static final String WAARP_DATABASE_CONNECTION_MAX

Maximum Connections to the Database. Waarp will manage by default up to 10 connections, except if this is set. The minimum value is 2.

See Also:

Constant Field Values

Method Detail

refresh

public static void refresh()

Re-retrieves all system properties so that any post-launch properties updates are retrieved.

isFileEncodingCorrect

public static boolean isFileEncodingCorrect()

Returns:

True if Encoding is Correct

contains

public static boolean contains(String key)

Returns true if and only if the system property with the specified key exists.

get

public static String get(String key)

Returns the value of the Java system property with the specified key, while falling back to null if the property access fails.

Returns:

the property value or null

get

public static String get(String key,
                         String def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Parameters:

key - of system property

def - the default value

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

Throws:

IllegalArgumentException - key null

get

public static boolean get(String key,
                          boolean def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Parameters:

key - of system property

def - the default value

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

Throws:

IllegalArgumentException - key null

get

public static int get(String key,
                      int def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Parameters:

key - the system property

def - the default value

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

Throws:

IllegalArgumentException - key null

get

public static long get(String key,
                       long def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Parameters:

key - of system property

def - the default value

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

Throws:

IllegalArgumentException - key null

getBoolean

public static boolean getBoolean(String key,
                                 boolean def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

getInt

public static int getInt(String key,
                         int def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

getLong

public static long getLong(String key,
                           long def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

getAndSet

public static String getAndSet(String key,
                               String def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Parameters:

key - of system property

def - the default value

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

Throws:

IllegalArgumentException - key or def null

getAndSet

public static boolean getAndSet(String key,
                                boolean def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Parameters:

key - of system property

def - the default value

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

Throws:

IllegalArgumentException - key null

getAndSet

public static int getAndSet(String key,
                            int def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Parameters:

key - of system property

def - the default value

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

Throws:

IllegalArgumentException - key null

getAndSet

public static long getAndSet(String key,
                             long def)

Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.

Parameters:

key - of system property

def - the default value

Returns:

the property value. def if there's no such property or if an access to the specified property is not allowed.

Throws:

IllegalArgumentException - key null

set

public static String set(String key,
                         String def)

Set the value of the Java system property with the specified key to the specified default value.

Parameters:

key - of system property

def - the default value

Returns:

the ancient value.

Throws:

IllegalArgumentException - key or def null

set

public static boolean set(String key,
                          boolean def)

Set the value of the Java system property with the specified key to the specified default value.

Parameters:

key - of system property

def - the default value

Returns:

the ancient value.

Throws:

IllegalArgumentException - key null

set

public static int set(String key,
                      int def)

Set the value of the Java system property with the specified key to the specified default value.

Parameters:

key - of system property

def - the default value

Returns:

the ancient value.

Throws:

IllegalArgumentException - key null

set

public static long set(String key,
                       long def)

Set the value of the Java system property with the specified key to the specified default value.

Parameters:

key - of system property

def - the default value

Returns:

the ancient value.

Throws:

IllegalArgumentException - key null

clear

public static void clear(String key)

Remove the key of the Java system property with the specified key.

Parameters:

key - of system property

Throws:

IllegalArgumentException - key null

debug

public static void debug(PrintStream out)

Print to System.out the content of the properties

Parameters:

out - the output stream to be used

Throws:

IllegalArgumentException - out null

getOS

public static SystemPropertyUtil.Platform getOS()

Returns:

the Platform

isWindows

public static boolean isWindows()

Returns:

True if Windows

isMac

public static boolean isMac()

Returns:

True if Mac

isUnix

public static boolean isUnix()

Returns:

True if Unix

isSolaris

public static boolean isSolaris()

Returns:

True if Solaris

debug

public static void debug()