Package com.storedobject.core

Class JavaClassLoader

java.lang.Object

java.lang.ClassLoader

com.storedobject.core.JavaClassLoader

public class JavaClassLoader
extends ClassLoader

Class loaded used internally by the platform to load classes from the database.

Author:

Syam

Method Summary

Modifier and Type	Method	Description
static void	clearNoFoundCache()	Clears the cache for classes that were not found.
static Class<?>	createClassFromProperty(String propertyName)	Creates a Java Class based on the logic name specified by the given property name.
static Object	createInstance(String logicName)	Creates an instance of a logic class specified by its name.
static Object	createInstanceFromProperty(String propertyName)	Creates an instance of a class associated with the specified property name.
static boolean	exists(String name)	Check whether a logic or data class exists or not.
Class<?>	findClass(String name)	Find a class.
static Class<?>	getLogic(String name)	Load a logic or data class from the database.
static Class<?>	getLogic(String name, boolean resolve)	Load a logic or data class from the database.
static boolean	loaded(String name)	Check whether a logic or data class is already loaded or not.

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResource, findResources, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Method Details

findClass

public Class<?> findClass(String name)
                   throws ClassNotFoundException

Find a class.

Overrides:

findClass in class ClassLoader

Parameters:

name - Name of the class.

Returns:

Class.

Throws:

ClassNotFoundException - If class is not found.

clearNoFoundCache

public static void clearNoFoundCache()

Clears the cache for classes that were not found.

Note: This method is used in development mode only.

getLogic

public static Class<?> getLogic(String name)
                         throws ClassNotFoundException

Load a logic or data class from the database.

Parameters:

name - Name of the class to load.

Returns:

Class loaded.

Throws:

ClassNotFoundException - If class is not found.

getLogic

public static Class<?> getLogic(String name,
 boolean resolve)
                         throws ClassNotFoundException

Load a logic or data class from the database.

Parameters:

name - Name of the class to load.

resolve - Whether to resolve the class or not.

Returns:

Class loaded.

Throws:

ClassNotFoundException - If class is not found.

exists

public static boolean exists(String name)

Check whether a logic or data class exists or not.

Parameters:

name - Name of the class.

Returns:

True/false.

loaded

public static boolean loaded(String name)

Check whether a logic or data class is already loaded or not.

Parameters:

name - Name of the class.

Returns:

True/false.

createClassFromProperty

public static Class<?> createClassFromProperty(String propertyName)
                                        throws SOException

Creates a Java Class based on the logic name specified by the given property name.

Parameters:

propertyName - The name of the property to fetch the associated logic name.

Returns:

The Java Class object associated with the logic name of the property or null if the logic name is blank.

Throws:

SOException - If the logic class associated with the property cannot be created.

createInstanceFromProperty

public static Object createInstanceFromProperty(String propertyName)
                                         throws SOException

Creates an instance of a class associated with the specified property name. The class is determined based on a property and instantiated using its no-argument constructor.

Parameters:

propertyName - The name of the property used to resolve the class to be instantiated.

Returns:

An instance of the resolved class, or null if the class could not be determined.

Throws:

SOException - If there is an error in creating the instance or resolving the class.

createInstance

public static Object createInstance(String logicName)
                             throws SOException

Creates an instance of a logic class specified by its name.

Parameters:

logicName - Name of the logic class to create an instance of.

Returns:

A new instance of the specified logic class.

Throws:

SOException - If the class cannot be found or the instance cannot be created.