gnu.expr
Class ModuleManager

java.lang.Object
  gnu.expr.ModuleManager

public class ModuleManager
extends java.lang.Object

A database of known modules as represented by ModuleInfo.. Current there is only a single global instanceof ModuleManager; in the future each different "applications" may have their own.

Field Summary

java.lang.ClassLoader	defaultClassLoader
static long	LAST_MODIFIED_CACHE_TIME
long	lastModifiedCacheTime Number millseconds before we re-check file's modified time.

Constructor Summary

ModuleManager()

Method Summary

void	add(ModuleInfo info)
void	clear() Reset the set of known modules.
ModuleInfo	find(Compilation comp)
ModuleInfo	findWithClassName(java.lang.String className)
ModuleInfo	findWithSourcePath(java.lang.String sourcePath)
ModuleInfo	findWithURL(java.net.URL url)
ModuleInfo	firstModule()
java.lang.String	getCompilationDirectory()
static ModuleManager	getInstance() For now assumes a single global ModuleManager.
void	loadPackageInfo(java.lang.String packageName) Search for and if needed load the ModuleSet for a package.
void	register(java.lang.String moduleClass, java.lang.String moduleSource, java.lang.String moduleUri) Called by compiler-generated code.
ModuleInfo	searchWithClassName(java.lang.String className)
void	setCompilationDirectory(java.lang.String path)

Methods inherited from class java.lang.Object

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

Field Detail

defaultClassLoader

public java.lang.ClassLoader defaultClassLoader

LAST_MODIFIED_CACHE_TIME

public static final long LAST_MODIFIED_CACHE_TIME

See Also:

Constant Field Values

lastModifiedCacheTime

public long lastModifiedCacheTime

Number millseconds before we re-check file's modified time.

Constructor Detail

ModuleManager

public ModuleManager()

Method Detail

setCompilationDirectory

public void setCompilationDirectory(java.lang.String path)

getCompilationDirectory

public java.lang.String getCompilationDirectory()

getInstance

public static ModuleManager getInstance()

For now assumes a single global ModuleManager. Later, might have multiple managers.

firstModule

public ModuleInfo firstModule()

find

public ModuleInfo find(Compilation comp)

add

public void add(ModuleInfo info)

searchWithClassName

public ModuleInfo searchWithClassName(java.lang.String className)

findWithClassName

public ModuleInfo findWithClassName(java.lang.String className)

findWithSourcePath

public ModuleInfo findWithSourcePath(java.lang.String sourcePath)

findWithURL

public ModuleInfo findWithURL(java.net.URL url)

register

public void register(java.lang.String moduleClass,
                     java.lang.String moduleSource,
                     java.lang.String moduleUri)

Called by compiler-generated code. The compiler generates in each package a class that extends ModuleSet, and that contains a ModuleSet.register(ModuleManager) method that calls back to this method. This method then registers the specified module.

loadPackageInfo

public void loadPackageInfo(java.lang.String packageName)
                     throws java.lang.ClassNotFoundException,
                            java.lang.InstantiationException,
                            java.lang.IllegalAccessException

Search for and if needed load the ModuleSet for a package.

Throws:

java.lang.ClassNotFoundException

java.lang.InstantiationException

java.lang.IllegalAccessException

clear

public void clear()

Reset the set of known modules.