org.dbtutools.DbtuTools.core.os
Class System

java.lang.Object
  |
  +--org.dbtutools.DbtuTools.core.os.System

public class System

extends java.lang.Object

The System class provides operating system related stuff. It cannot be instantiated.

Author:

Daniel Scheibli <daniel.scheibli at edelbyte.org>

Field Summary

static int	ENDIAN_TYPE_BIG Constant standing for all big endian platforms as most RISC machines are.
static int	ENDIAN_TYPE_LITTLE Constant standing for all little endian platforms as systems with Intel x86 processor(s) are.
static int	OS_FAMILY_UNIX Constant standing for the Unix operating systems, like IBM's AIX, Linux, Sun Solaris and others.
static int	OS_FAMILY_WINTEL Constant standing for all DOS succession operating systems, like the Microsoft Windows family and IBM's OS/2.

Method Summary

static int	getEndianType() Detects and returns the endian type of the current running platform. Background: The detection is done by calling the ApiWrapper.getEndianType() method.
static int	getOsFamily() Detects and returns the operating system family. Background: The detection is done by calling the System.getOsFamily() method.
static int	getParentProcessId() Detects and returns the Parent Process ID (identifies the caller of the Java program). Background: The detection is done by interpreting the value of java.lang.System.getProperty("PPID");

Methods inherited from class java.lang.Object

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

Field Detail

OS_FAMILY_WINTEL

public static final int OS_FAMILY_WINTEL

Constant standing for all DOS succession operating systems, like the Microsoft Windows family and IBM's OS/2.

OS_FAMILY_UNIX

public static final int OS_FAMILY_UNIX

Constant standing for the Unix operating systems, like IBM's AIX, Linux, Sun Solaris and others.

ENDIAN_TYPE_LITTLE

public static final int ENDIAN_TYPE_LITTLE

Constant standing for all little endian platforms as systems with Intel x86 processor(s) are.

ENDIAN_TYPE_BIG

public static final int ENDIAN_TYPE_BIG

Constant standing for all big endian platforms as most RISC machines are.

Method Detail

getEndianType

public static int getEndianType()
                         throws UnknownValueException

Detects and returns the endian type of the current running platform.

Background: The detection is done by calling the ApiWrapper.getEndianType() method.

Returns:

ENDIAN_TYPE_LITTLE - For the case, that a little endian platform was detected.
ENDIAN_TYPE_BIG - For the case, that a big endian platform was detected.

Throws:

UnknownValueException - For the case, that the endian type could not be detected.

getOsFamily

public static int getOsFamily()
                       throws UnknownValueException

Detects and returns the operating system family.

Background: The detection is done by calling the System.getOsFamily() method.

Returns:

OS_FAMILY_UNIX - For the case, that a Unix family operating system was detected.
OS_FAMILY_WINTEL - For the case, that a Wintel family operating system was detected.

Throws:

UnknownValueException - For the case, that the operating system family could not be detected.

getParentProcessId

public static int getParentProcessId()
                              throws UnknownValueException

Detects and returns the Parent Process ID (identifies the caller of the Java program).

Background: The detection is done by interpreting the value of java.lang.System.getProperty("PPID");

Returns:

The Process ID of the parent program.

Throws:

UnknownValueException - For the case, that the Parent Process ID could not be detected.