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java.lang.Object | +--org.apache.catalina.loader.WebappLoader
Classloader implementation which is specialized for handling web applications in the most efficient way, while being Catalina aware (all accesses to resources are made through the DirContext interface). This class loader supports detection of modified Java classes, which can be used to implement auto-reload support.
This class loader is configured by adding the pathnames of directories,
JAR files, and ZIP files with the addRepository()
method,
prior to calling start()
. When a new class is required,
these repositories will be consulted first to locate the class. If it
is not present, the system class loader will be used instead.
Field Summary | |
protected LifecycleSupport |
lifecycle
The lifecycle event support for this component. |
protected static StringManager |
sm
The string manager for this package. |
protected java.beans.PropertyChangeSupport |
support
The property change support for this component. |
Fields inherited from interface org.apache.catalina.Lifecycle |
START_EVENT,
STOP_EVENT |
Constructor Summary | |
WebappLoader()
Construct a new WebappLoader with no defined parent class loader (so that the actual parent will be the system class loader). |
|
WebappLoader(java.lang.ClassLoader parent)
Construct a new WebappLoader with the specified class loader to be defined as the parent of the ClassLoader we ultimately create. |
Method Summary | |
void |
addLifecycleListener(LifecycleListener listener)
Add a lifecycle event listener to this component. |
void |
addPropertyChangeListener(java.beans.PropertyChangeListener listener)
Add a property change listener to this component. |
void |
addRepository(java.lang.String repository)
Add a new repository to the set of repositories for this class loader. |
java.lang.String[] |
findRepositories()
Return the set of repositories defined for this class loader. |
int |
getCheckInterval()
Return the check interval for this Loader. |
java.lang.ClassLoader |
getClassLoader()
Return the Java class loader to be used by this Container. |
Container |
getContainer()
Return the Container with which this Logger has been associated. |
int |
getDebug()
Return the debugging detail level for this component. |
boolean |
getDelegate()
Return the "follow standard delegation model" flag used to configure our ClassLoader. |
java.lang.String |
getInfo()
Return descriptive information about this Loader implementation and the corresponding version number, in the format <description>/<version> . |
java.lang.String |
getLoaderClass()
Return the ClassLoader class name. |
boolean |
getReloadable()
Return the reloadable flag for this Loader. |
boolean |
modified()
Has the internal repository associated with this Loader been modified, such that the loaded classes should be reloaded? |
void |
propertyChange(java.beans.PropertyChangeEvent event)
Process property change events from our associated Context. |
void |
removeLifecycleListener(LifecycleListener listener)
Remove a lifecycle event listener from this component. |
void |
removePropertyChangeListener(java.beans.PropertyChangeListener listener)
Remove a property change listener from this component. |
void |
run()
The background thread that checks for session timeouts and shutdown. |
void |
setCheckInterval(int checkInterval)
Set the check interval for this Loader. |
void |
setContainer(Container container)
Set the Container with which this Logger has been associated. |
void |
setDebug(int debug)
Set the debugging detail level for this component. |
void |
setDelegate(boolean delegate)
Set the "follow standard delegation model" flag used to configure our ClassLoader. |
void |
setLoaderClass(java.lang.String loaderClass)
Set the ClassLoader class name. |
void |
setReloadable(boolean reloadable)
Set the reloadable flag for this Loader. |
void |
start()
Start this component, initializing our associated class loader. |
void |
stop()
Stop this component, finalizing our associated class loader. |
java.lang.String |
toString()
Return a String representation of this component. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
wait,
wait,
wait |
Field Detail |
protected LifecycleSupport lifecycle
protected static final StringManager sm
protected java.beans.PropertyChangeSupport support
Constructor Detail |
public WebappLoader()
public WebappLoader(java.lang.ClassLoader parent)
parent
- The parent class loaderMethod Detail |
public int getCheckInterval()
public void setCheckInterval(int checkInterval)
checkInterval
- The new check intervalpublic java.lang.ClassLoader getClassLoader()
public Container getContainer()
public void setContainer(Container container)
container
- The associated Containerpublic int getDebug()
public void setDebug(int debug)
debug
- The new debugging detail levelpublic boolean getDelegate()
public void setDelegate(boolean delegate)
delegate
- The new flagpublic java.lang.String getInfo()
<description>/<version>
.public java.lang.String getLoaderClass()
public void setLoaderClass(java.lang.String loaderClass)
loaderClass
- The new ClassLoader class namepublic boolean getReloadable()
public void setReloadable(boolean reloadable)
reloadable
- The new reloadable flagpublic void addPropertyChangeListener(java.beans.PropertyChangeListener listener)
listener
- The listener to addpublic void addRepository(java.lang.String repository)
repository
- Repository to be addedpublic java.lang.String[] findRepositories()
public boolean modified()
public void removePropertyChangeListener(java.beans.PropertyChangeListener listener)
listener
- The listener to removepublic java.lang.String toString()
public void addLifecycleListener(LifecycleListener listener)
listener
- The listener to addpublic void removeLifecycleListener(LifecycleListener listener)
listener
- The listener to removepublic void start() throws LifecycleException
public void stop() throws LifecycleException
public void propertyChange(java.beans.PropertyChangeEvent event)
event
- The property change event that has occurredpublic void run()
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