com.caucho.loader

Class SystemClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

com.caucho.loader.DynamicClassLoader

com.caucho.loader.EnvironmentClassLoader

com.caucho.loader.SystemClassLoader

All Implemented Interfaces:

EnvironmentBean, Make, DynamicClassLoaderMXBean, Dependency, java.io.Closeable, java.lang.AutoCloseable

public class SystemClassLoader
extends EnvironmentClassLoader
implements EnvironmentBean

ClassLoader that initalizes the environment and allows byte code enhancement of classes in the system classpath.

 java -Djava.system.class.loader=com.caucho.loader.SystemClassLoader ...
 

If the system property "system.conf" is defined, it is used as a path to a configuration file that initializes the enviornment. Relative paths are relative to the current directory (See Vfs.getPwd().

Resources defined in system.conf are available to all classes loaded within the jvm.

 java -Dsystem.conf=tests/system.conf -Djava.system.class.loader=com.caucho.loader.SystemClassLoader ...
 

Constructor Summary

Constructors

Constructor and Description
SystemClassLoader(java.lang.ClassLoader parent) Creates a new SystemClassLoader.

Method Summary

Modifier and Type	Method and Description
java.lang.String	findLibrary(java.lang.String name) Returns the full library path for the name.
java.lang.ClassLoader	getClassLoader()
protected java.lang.String	getSchema()
void	init() Initialize the environment.
protected void	initEnvironment()
boolean	isJarCacheEnabled() Returns true if jar entries should be cached.
boolean	isRoot()
java.lang.Class<?>	loadClassImpl(java.lang.String name, boolean resolve) Load a class using this class loader

Methods inherited from class com.caucho.loader.EnvironmentClassLoader

addListener, addLoaderListener, addScanListener, addScanPackage, addScanRoot, addURL, applyVisibleModules, buildImportClassPath, configureEnhancerEvent, configurePostEnhancerEvent, create, create, create, create, createArtifactManager, destroy, findImportClass, getAdmin, getArtifactManager, getAttribute, getConfigException, getEnvironmentListeners, getHash, getImportResource, getLoaderListeners, getOwner, getResource, getResourceAlias, getResourceAsStream, isActive, putIfAbsent, putResourceAlias, removeAttribute, removeListener, scan, setAttribute, setConfigException, setOwner, start, stop, toString, validate

Methods inherited from class com.caucho.loader.DynamicClassLoader

addCodeBasePath, addDependency, addJar, addJarManifestClassPath, addListener, addLoader, addLoader, addManifestClassPath, addNative, addParentPriorityPackage, addParentPriorityPackages, addPathClass, addPermission, addPermission, addPermissions, addPriorityPackage, addRoot, addTransformer, addURL, addURL, appendToClassPathForInstrumentation, buildClassPath, buildResourcePathSpecificFirst, buildSourcePath, clearModified, containsURL, containsURL, definePackage, findClass, findClassImpl, findPath, findResources, getClassEntry, getClassPath, getDependencyCheckInterval, getGlobalDependencyCheckInterval, getHash, getHashCrc, getId, getInstrumentableClassLoader, getListeners, getLoaders, getLocalClassPath, getNewTempClassLoader, getPermissions, getPermissions, getResourcePathSpecificFirst, getResources, getSourcePath, getThrowawayClassLoader, getTransformerList, getURLs, isDestroyed, isDirectoryLoader, isDisableURLs, isJarCacheEnabledDefault, isModified, isModified, isModified, isModifiedNow, loadClass, loadClass, loadClass, loadClassEntry, logModified, make, removeListener, removeLoader, replace, resetDependencyCheckInterval, sendAddLoaderEvent, setDependencyCheckInterval, setDisableURLs, setEnableDependencyCheck, setGlobalDependencyCheckInterval, setId, setJarCacheEnabled, setOldLoader, setServletHack, toClassPath, updateScan

Methods inherited from class java.net.URLClassLoader

close, definePackage, findResource, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, findLoadedClass, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemClassLoader

public SystemClassLoader(java.lang.ClassLoader parent)

Creates a new SystemClassLoader.

Method Detail

isJarCacheEnabled

public boolean isJarCacheEnabled()

Description copied from class: DynamicClassLoader

Returns true if jar entries should be cached.

Overrides:

isJarCacheEnabled in class DynamicClassLoader

getClassLoader

public java.lang.ClassLoader getClassLoader()

Specified by:

getClassLoader in interface EnvironmentBean

isRoot

public boolean isRoot()

Overrides:

isRoot in class DynamicClassLoader

init

public void init()

Description copied from class: EnvironmentClassLoader

Initialize the environment.

Overrides:

init in class EnvironmentClassLoader

initEnvironment

protected void initEnvironment()

Overrides:

initEnvironment in class EnvironmentClassLoader

loadClassImpl

public java.lang.Class<?> loadClassImpl(java.lang.String name,
                                        boolean resolve)
                                 throws java.lang.ClassNotFoundException

Load a class using this class loader

Overrides:

loadClassImpl in class DynamicClassLoader

Parameters:

name - the classname to load

resolve - if true, resolve the class

Returns:

the loaded classes

Throws:

java.lang.ClassNotFoundException

getSchema

protected java.lang.String getSchema()

findLibrary

public java.lang.String findLibrary(java.lang.String name)

Returns the full library path for the name.

Overrides:

findLibrary in class DynamicClassLoader