Vert.x 4.5.13 · io.vertx.core.impl.IsolatingClassLoader

Modifier and Type	Field and Description
private volatile boolean	closed
private List<String>	isolatedClasses

Access	Constructor and Description
public	IsolatingClassLoader(URL[] urls, ClassLoader parent, List<String> isolatedClasses)

Modifier and Type	Method and Description
public void	close() Overrides java.net.URLClassLoader.close. Implements java.io.Closeable.close. Closes this URLClassLoader, so that it can no longer be used to load new classes or resources that are defined by this loader.
public URL	getResource(String The resource name name) Overrides java.lang.ClassLoader.getResource. Finds the resource with the given name.
public Enumeration<URL>	getResources(String The resource name name) Overrides java.lang.ClassLoader.getResources. Finds all the resources with the given name.
public boolean	isClosed()
private boolean	isIsolatedClass(String name)
private boolean	isVertxOrSystemClass(String name)
protected Class<?>	loadClass(String The binary name of the class name, boolean If `true` then resolve the class resolve) Overrides java.lang.ClassLoader.loadClass. Loads the class with the specified binary name.

Field Detail

closed	back to summary
private volatile boolean closed

isolatedClasses	back to summary
private List<String> isolatedClasses

Constructor Detail

IsolatingClassLoader	back to summary
public IsolatingClassLoader(URL[] urls, ClassLoader parent, List<String> isolatedClasses)

Method Detail

close back to summary

close	back to summary
public void close() throws IOException Overrides java.net.URLClassLoader.close. Implements java.io.Closeable.close. Doc from java.net.URLClassLoader.close. Closes this URLClassLoader, so that it can no longer be used to load new classes or resources that are defined by this loader. Classes and resources defined by any of this loader's parents in the delegation hierarchy are still accessible. Also, any classes or resources that are already loaded, are still accessible. In the case of jar: and file: URLs, it also closes any files that were opened by it. If another thread is loading a class when the `close` method is invoked, then the result of that load is undefined. The method makes a best effort attempt to close all opened files, by catching `IOException`s internally. Unchecked exceptions and errors are not caught. Calling close on an already closed loader has no effect. Annotations @Override Exceptions IOException: if closing any file opened by this class loader resulted in an IOException. Any such exceptions are caught internally. If only one is caught, then it is re-thrown. If more than one exception is caught, then the second and following exceptions are added as suppressed exceptions of the first one caught, which is then re-thrown.

public void close() throws IOException

Overrides java.net.URLClassLoader.close.

Implements java.io.Closeable.close.

Doc from java.net.URLClassLoader.close.

Closes this URLClassLoader, so that it can no longer be used to load new classes or resources that are defined by this loader. Classes and resources defined by any of this loader's parents in the delegation hierarchy are still accessible. Also, any classes or resources that are already loaded, are still accessible.

In the case of jar: and file: URLs, it also closes any files that were opened by it. If another thread is loading a class when the close method is invoked, then the result of that load is undefined.

The method makes a best effort attempt to close all opened files, by catching IOExceptions internally. Unchecked exceptions and errors are not caught. Calling close on an already closed loader has no effect.

Annotations

@Override

Exceptions

IOException:: if closing any file opened by this class loader resulted in an IOException. Any such exceptions are caught internally. If only one is caught, then it is re-thrown. If more than one exception is caught, then the second and following exceptions are added as suppressed exceptions of the first one caught, which is then re-thrown.

getResource back to summary

getResource	back to summary
public URL getResource(String name) Overrides java.lang.ClassLoader.getResource. Doc from java.lang.ClassLoader.getResource. Finds the resource with the given name. A resource is some data (images, audio, text, etc) that can be accessed by class code in a way that is independent of the location of the code. The name of a resource is a '`/`'-separated path name that identifies the resource. Resources in named modules are subject to the encapsulation rules specified by `Module.getResourceAsStream`. Additionally, and except for the special case where the resource has a name ending with "`.class`", this method will only find resources in packages of named modules when the package is `opened` unconditionally (even if the caller of this method is in the same module as the resource). Parameters name:String The resource name Returns:URL `URL` object for reading the resource; `null` if the resource could not be found, a `URL` could not be constructed to locate the resource, the resource is in a package that is not opened unconditionally, or access to the resource is denied by the security manager. Annotations @Override

public URL getResource(String name)

Overrides java.lang.ClassLoader.getResource.

Doc from java.lang.ClassLoader.getResource.

Finds the resource with the given name. A resource is some data (images, audio, text, etc) that can be accessed by class code in a way that is independent of the location of the code.

The name of a resource is a '/'-separated path name that identifies the resource.

Resources in named modules are subject to the encapsulation rules specified by Module.getResourceAsStream. Additionally, and except for the special case where the resource has a name ending with ".class", this method will only find resources in packages of named modules when the package is opened unconditionally (even if the caller of this method is in the same module as the resource).

Parameters

name:String: The resource name

Returns:URL

URL object for reading the resource; null if the resource could not be found, a URL could not be constructed to locate the resource, the resource is in a package that is not opened unconditionally, or access to the resource is denied by the security manager.

Annotations

@Override

getResources back to summary

getResources	back to summary
public Enumeration<URL> getResources(String name) throws IOException Overrides java.lang.ClassLoader.getResources. Doc from java.lang.ClassLoader.getResources. Finds all the resources with the given name. A resource is some data (images, audio, text, etc) that can be accessed by class code in a way that is independent of the location of the code. The name of a resource is a `/`-separated path name that identifies the resource. Resources in named modules are subject to the encapsulation rules specified by `Module.getResourceAsStream`. Additionally, and except for the special case where the resource has a name ending with "`.class`", this method will only find resources in packages of named modules when the package is `opened` unconditionally (even if the caller of this method is in the same module as the resource). Parameters name:String The resource name Returns:Enumeration<URL> An enumeration of `URL` objects for the resource. If no resources could be found, the enumeration will be empty. Resources for which a `URL` cannot be constructed, are in a package that is not opened unconditionally, or access to the resource is denied by the security manager, are not returned in the enumeration. Annotations @Override Exceptions IOException: If I/O errors occur

public Enumeration<URL> getResources(String name) throws IOException

Overrides java.lang.ClassLoader.getResources.

Doc from java.lang.ClassLoader.getResources.

Finds all the resources with the given name. A resource is some data (images, audio, text, etc) that can be accessed by class code in a way that is independent of the location of the code.

The name of a resource is a /-separated path name that identifies the resource.

Resources in named modules are subject to the encapsulation rules specified by Module.getResourceAsStream. Additionally, and except for the special case where the resource has a name ending with ".class", this method will only find resources in packages of named modules when the package is opened unconditionally (even if the caller of this method is in the same module as the resource).

Parameters

name:String: The resource name

Returns:Enumeration<URL>

An enumeration of URL objects for the resource. If no resources could be found, the enumeration will be empty. Resources for which a URL cannot be constructed, are in a package that is not opened unconditionally, or access to the resource is denied by the security manager, are not returned in the enumeration.

Annotations

@Override

Exceptions

IOException:: If I/O errors occur

isClosed	back to summary
public boolean isClosed()

isIsolatedClass	back to summary
private boolean isIsolatedClass(String name)

isVertxOrSystemClass	back to summary
private boolean isVertxOrSystemClass(String name)

loadClass back to summary

loadClass	back to summary
protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException Overrides java.lang.ClassLoader.loadClass. Doc from java.lang.ClassLoader.loadClass. Loads the class with the specified binary name. The default implementation of this method searches for classes in the following order: Invoke `findLoadedClass(String)` to check if the class has already been loaded. Invoke the `loadClass` method on the parent class loader. If the parent is `null` the class loader built into the virtual machine is used, instead. Invoke the `findClass(String)` method to find the class. If the class was found using the above steps, and the `resolve` flag is true, this method will then invoke the `resolveClass(Class)` method on the resulting `Class` object. Subclasses of `ClassLoader` are encouraged to override `findClass(String)`, rather than this method. Unless overridden, this method synchronizes on the result of `getClassLoadingLock` method during the entire class loading process. Parameters name:String The binary name of the class resolve:boolean If `true` then resolve the class Returns:Class<?> The resulting `Class` object Annotations @Override Exceptions ClassNotFoundException: If the class could not be found

protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException

Overrides java.lang.ClassLoader.loadClass.

Doc from java.lang.ClassLoader.loadClass.

Loads the class with the specified binary name. The default implementation of this method searches for classes in the following order:

Invoke findLoadedClass(String) to check if the class has already been loaded.
Invoke the loadClass method on the parent class loader. If the parent is null the class loader built into the virtual machine is used, instead.
Invoke the findClass(String) method to find the class.

If the class was found using the above steps, and the resolve flag is true, this method will then invoke the resolveClass(Class) method on the resulting Class object.

Subclasses of ClassLoader are encouraged to override findClass(String), rather than this method.

Unless overridden, this method synchronizes on the result of getClassLoadingLock method during the entire class loading process.

Parameters

name:String: The binary name of the class
resolve:boolean: If true then resolve the class

Returns:Class<?>

The resulting Class object

Annotations

@Override

Exceptions

ClassNotFoundException:: If the class could not be found

public Class IsolatingClassLoader

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail