Package org.apache.jasper.servlet
Class JasperLoader
- java.lang.Object
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- java.lang.ClassLoader
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- java.security.SecureClassLoader
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- java.net.URLClassLoader
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- org.apache.jasper.servlet.JasperLoader
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- All Implemented Interfaces:
Closeable
,AutoCloseable
public class JasperLoader extends URLClassLoader
Class loader for loading servlet class files (corresponding to JSP files) and tag handler class files (corresponding to tag files).- Author:
- Anil K. Vijendran, Harish Prabandham
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Constructor Summary
Constructors Constructor Description JasperLoader(URL[] urls, ClassLoader parent, String packageName, PermissionCollection permissionCollection)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description PermissionCollection
getPermissions(CodeSource codeSource)
Get the Permissions for a CodeSource.InputStream
getResourceAsStream(String name)
Delegate to parentClass<?>
loadClass(String name)
Load the class with the specified name.Class<?>
loadClass(String name, boolean resolve)
Load the class with the specified name, searching using the following algorithm until it finds and returns the class.-
Methods inherited from class java.net.URLClassLoader
addURL, close, definePackage, findClass, findResource, findResources, getURLs, newInstance, newInstance
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Methods inherited from class java.security.SecureClassLoader
defineClass, defineClass
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Methods inherited from class java.lang.ClassLoader
clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners
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Constructor Detail
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JasperLoader
public JasperLoader(URL[] urls, ClassLoader parent, String packageName, PermissionCollection permissionCollection)
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Method Detail
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loadClass
public Class<?> loadClass(String name) throws ClassNotFoundException
Load the class with the specified name. This method searches for classes in the same manner asloadClass(String, boolean)
withfalse
as the second argument.- Overrides:
loadClass
in classClassLoader
- Parameters:
name
- Name of the class to be loaded- Throws:
ClassNotFoundException
- if the class was not found
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loadClass
public Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException
Load the class with the specified name, searching using the following algorithm until it finds and returns the class. If the class cannot be found, returnsClassNotFoundException
.- Call
findLoadedClass(String)
to check if the class has already been loaded. If it has, the sameClass
object is returned. - If the
delegate
property is set totrue
, call theloadClass()
method of the parent class loader, if any. - Call
findClass()
to find this class in our locally defined repositories. - Call the
loadClass()
method of our parent class loader, if any.
resolve
flag istrue
, this method will then callresolveClass(Class)
on the resulting Class object.- Overrides:
loadClass
in classClassLoader
- Parameters:
name
- Name of the class to be loadedresolve
- Iftrue
then resolve the class- Throws:
ClassNotFoundException
- if the class was not found
- Call
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getResourceAsStream
public InputStream getResourceAsStream(String name)
Delegate to parent- Overrides:
getResourceAsStream
in classURLClassLoader
- See Also:
ClassLoader.getResourceAsStream(java.lang.String)
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getPermissions
public final PermissionCollection getPermissions(CodeSource codeSource)
Get the Permissions for a CodeSource. Since this ClassLoader is only used for a JSP page in a web application context, we just return our preset PermissionCollection for the web app context.- Overrides:
getPermissions
in classURLClassLoader
- Parameters:
codeSource
- Code source where the code was loaded from- Returns:
- PermissionCollection for CodeSource
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