Package org.eclipse.jdt.launching

Class VMStandin

java.lang.Object

org.eclipse.jdt.launching.AbstractVMInstall

org.eclipse.jdt.launching.VMStandin

All Implemented Interfaces:

IVMInstall, IVMInstall2, IVMInstall3

public class VMStandin
extends AbstractVMInstall

An implementation of IVMInstall that is used for manipulating VMs without necessarily committing changes.

Instances of this class act like wrappers. All other instances of IVMInstall represent 'real live' VMs that may be used for building or launching. Instances of this class behave like 'temporary' VMs that are not visible and not available for building or launching.

Instances of this class may be constructed as a preliminary step to creating a 'live' VM or as a preliminary step to making changes to a 'real' VM.

When convertToRealVM is called, a corresponding 'real' VM is created if one did not previously exist, or the corresponding 'real' VM is updated.

Clients may instantiate this class.

Since:

2.1

Restriction:

This class is not intended to be sub-classed by clients.

Constructor Summary

Constructors

Constructor	Description
VMStandin(IVMInstall realVM)	Construct a VMStandin instance based on the specified IVMInstall.
VMStandin(IVMInstall sourceVM, String id)	Constructs a copy of the specified VM with the given identifier.
VMStandin(IVMInstallType type, String id)

Method Summary

Modifier and Type	Method	Description
IVMInstall	convertToRealVM()	If no corresponding 'real' VM exists, create one and populate it from this stand-in instance.
String	getJavaVersion()	Returns a string representing the java.version system property of this VM install, or null if unknown.

Methods inherited from class org.eclipse.jdt.launching.AbstractVMInstall

abort, equals, evaluateSystemProperties, getAttribute, getAttributes, getId, getInstallLocation, getJavadocLocation, getLibraryLocations, getName, getVMArgs, getVMArguments, getVMInstallType, getVMRunner, hashCode, setAttribute, setInstallLocation, setJavadocLocation, setLibraryLocations, setName, setNotify, setVMArgs, setVMArguments

Methods inherited from class java.lang.Object

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

Constructor Details

VMStandin

public VMStandin(IVMInstallType type,
 String id)

VMStandin

public VMStandin(IVMInstall sourceVM,
 String id)

Constructs a copy of the specified VM with the given identifier.

Parameters:

sourceVM - the original VM

id - the new ID to use

Since:

3.2

VMStandin

public VMStandin(IVMInstall realVM)

Construct a VMStandin instance based on the specified IVMInstall. Changes to this stand-in will not be reflected in the 'real' VM until convertToRealVM is called.

Parameters:

realVM - the 'real' VM from which to construct this stand-in VM

Method Details

convertToRealVM

public IVMInstall convertToRealVM()

If no corresponding 'real' VM exists, create one and populate it from this stand-in instance. If a corresponding VM exists, update its attributes from this stand-in instance.

Returns:

IVMInstall the 'real' corresponding to this stand-in VM

getJavaVersion

public String getJavaVersion()

Description copied from interface: IVMInstall2

Returns a string representing the java.version system property of this VM install, or null if unknown.

Specified by:

getJavaVersion in interface IVMInstall2

Overrides:

getJavaVersion in class AbstractVMInstall

Returns:

a string representing the java.version system property of this VM install, or null if unknown.