org.kie.workbench.common.services.backend.builder

Class LRUProjectDependenciesClassLoaderCache

java.lang.Object

org.guvnor.common.services.backend.cache.LRUCache<KieProject,ClassLoader>

org.kie.workbench.common.services.backend.builder.LRUProjectDependenciesClassLoaderCache

All Implemented Interfaces:

org.guvnor.common.services.backend.cache.Cache<KieProject,ClassLoader>

@ApplicationScoped
@Named(value="LRUProjectDependenciesClassLoaderCache")
public class LRUProjectDependenciesClassLoaderCache
extends org.guvnor.common.services.backend.cache.LRUCache<KieProject,ClassLoader>

Constructor Summary

Constructors

Constructor and Description
LRUProjectDependenciesClassLoaderCache()

Method Summary

Methods

Modifier and Type	Method and Description
ClassLoader	assertDependenciesClassLoader(KieProject project)
static ClassLoader	buildClassLoader(KieProject project, org.kie.scanner.KieModuleMetaData kieModuleMetaData) This method and the subsequent caching was added for performance reasons, since the dependencies calculation and project class loader calculation tends to be time consuming when we manage project with transitives dependencies.
void	setDependenciesClassLoader(KieProject project, ClassLoader classLoader)

Methods inherited from class org.guvnor.common.services.backend.cache.LRUCache

getEntry, getKeys, invalidateCache, invalidateCache, setEntry

Methods inherited from class java.lang.Object

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

Constructor Detail

LRUProjectDependenciesClassLoaderCache

public LRUProjectDependenciesClassLoaderCache()

Method Detail

assertDependenciesClassLoader

public ClassLoader assertDependenciesClassLoader(KieProject project)

setDependenciesClassLoader

public void setDependenciesClassLoader(KieProject project,
                              ClassLoader classLoader)

buildClassLoader

public static ClassLoader buildClassLoader(KieProject project,
                           org.kie.scanner.KieModuleMetaData kieModuleMetaData)

This method and the subsequent caching was added for performance reasons, since the dependencies calculation and project class loader calculation tends to be time consuming when we manage project with transitives dependencies. Since the project ClassLoader may change with ever incremental build it's better to store in the cache the ClassLoader part that has the project dependencies. And the project ClassLoader can be easily calculated using this ClassLoader as parent. Since current project classes are quickly calculated on each incremental build, etc.