com.ibm.commons
Class Platform

java.lang.Object
  com.ibm.commons.Platform

public abstract class Platform
extends java.lang.Object

Access to platform specific services.

There is one platform object (singleton) for the JVM. It encapsulate the services for the undelying platform. This platform object is automatically instanciated when necessary.

Field Summary

static java.lang.String	FACTORY_CLASS
static java.lang.String	PLATFORM_PROPERTY_KEY
static java.lang.String	PORTAL6_PLATFORM_CLASS

Constructor Summary

protected

Platform()

Method Summary

protected abstract com.ibm.commons.log.LogMgrFactory	createLogMgrFactory()
abstract java.io.PrintStream	getErrorStream() Get the error stream for this platform.
java.io.InputStream	getGlobalResource(java.lang.String resourceName) Get a global resource file as an input stream.
java.io.File	getGlobalResourceFile(java.lang.String resourceName) Get a global resource as a file.
static Platform	getInstance() Return the platform singleton.
com.ibm.commons.log.LogMgrFactory	getLogMgrFactory() Get the Log manager factory used for this platform.
abstract java.lang.String	getName() Return the name of the platform.
java.lang.Object	getObject(java.lang.String key) Get an object cached by the platform.
abstract java.io.PrintStream	getOutputStream() Get the output stream for this platform.
com.ibm.commons.IPlatformService	getPlatformService(java.lang.String serviceId) Return a sevice implementation giving its name.
java.lang.String	getProperty(java.lang.String key) Get a platform property.
protected void	initialize()
static void	initPlatform(Platform platform)
abstract boolean	isEclipseBased() Check if the runtime platform is Eclipse based.
abstract boolean	isFeatureEnabled(java.lang.String featureId)
boolean	isPlatform(java.lang.String name) Check if it is a particular platform.
void	log(java.lang.String message) Log a message.
void	log(java.lang.String message, java.lang.Object... parameters) Log a message after formatting it.
void	log(java.lang.Throwable ex) Log an exception.
void	putProperty(java.lang.String key, java.lang.String object) Set a platform property.
void	registerPlatformService(java.lang.String serviceId, com.ibm.commons.IPlatformService platformService) Register a platform service.
void	removeProperty(java.lang.String key) Remove a platform property.

Methods inherited from class java.lang.Object

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

Field Detail

FACTORY_CLASS

public static final java.lang.String FACTORY_CLASS

See Also:

Constant Field Values

PORTAL6_PLATFORM_CLASS

public static final java.lang.String PORTAL6_PLATFORM_CLASS

See Also:

Constant Field Values

PLATFORM_PROPERTY_KEY

public static final java.lang.String PLATFORM_PROPERTY_KEY

See Also:

Constant Field Values

Constructor Detail

Platform

protected Platform()

Method Detail

initPlatform

public static void initPlatform(Platform platform)

getInstance

public static Platform getInstance()

Return the platform singleton.

Returns:

the Platform singleton

initialize

protected void initialize()

getName

public abstract java.lang.String getName()

Return the name of the platform.

Returns:

the platform name

getLogMgrFactory

public final com.ibm.commons.log.LogMgrFactory getLogMgrFactory()

Get the Log manager factory used for this platform.

Returns:

createLogMgrFactory

protected abstract com.ibm.commons.log.LogMgrFactory createLogMgrFactory()

getOutputStream

public abstract java.io.PrintStream getOutputStream()

Get the output stream for this platform.

Returns:

getErrorStream

public abstract java.io.PrintStream getErrorStream()

Get the error stream for this platform.

Returns:

isEclipseBased

public abstract boolean isEclipseBased()

Check if the runtime platform is Eclipse based.

Returns:

true if the host is Eclipse

isPlatform

public boolean isPlatform(java.lang.String name)

Check if it is a particular platform.

Returns:

true if the platform matches the name

getPlatformService

public com.ibm.commons.IPlatformService getPlatformService(java.lang.String serviceId)

Return a sevice implementation giving its name.

Parameters:

serviceId - : unique id representing the platform service

Returns:

the service implementation

registerPlatformService

public void registerPlatformService(java.lang.String serviceId,
                                    com.ibm.commons.IPlatformService platformService)

Register a platform service.

Parameters:

serviceId - unique id

platformService -

getProperty

public java.lang.String getProperty(java.lang.String key)

Get a platform property.

Parameters:

key - the property name

Returns:

the property value

putProperty

public void putProperty(java.lang.String key,
                        java.lang.String object)

Set a platform property.

Parameters:

key - the property name

object - the new property value

removeProperty

public void removeProperty(java.lang.String key)

Remove a platform property.

Parameters:

key - the property name

getGlobalResource

public java.io.InputStream getGlobalResource(java.lang.String resourceName)

Get a global resource file as an input stream.

Returns:

the input stream, or null if the resource is not available

getGlobalResourceFile

public java.io.File getGlobalResourceFile(java.lang.String resourceName)

Get a global resource as a file. This returns a file object when the resource is an actual file. This allows an application to get the lastModificationDate as well as the file length when needed. If the resource is not backed by a file, it return null.

Parameters:

resourceName -

Returns:

the corresponding file, if exists

getObject

public java.lang.Object getObject(java.lang.String key)

Get an object cached by the platform.

Returns:

log

public void log(java.lang.Throwable ex)

Log an exception.

Note that the log not only goes to default output stream, but it can also go a to log file if implemented by the platform.

log

public void log(java.lang.String message)

Log a message.

Note that the log not only goes to default output stream, but it can also go a to log file if implemented by the platform.

log

public void log(java.lang.String message,
                java.lang.Object... parameters)

Log a message after formatting it.

Note that the log not only goes to default output stream, but it can also go a to log file if implemented by the platform.

isFeatureEnabled

public abstract boolean isFeatureEnabled(java.lang.String featureId)