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package com.sun.enterprise.deployment.util;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.lang.reflect.Method;
import com.sun.enterprise.deployment.WebBundleDescriptor;
import com.sun.logging.LogDomains;
public class DOLLoadingContextFactory {
private static WebBundleDescriptor defaultWebXMLWbd = null;
private static boolean isParsingDefaultWebXML = false;
private static boolean isDefaultWebXMLInitialized = false;
private static Class dolLoadingContext = null;
private static final String DLC_CLASS_NAME =
"com.sun.enterprise.deployment.backend.DOLLoadingContext";
private static final String DLC_METHOD_NAME =
"initDefaultWebBundleDescriptor";
private static Logger _logger =
LogDomains.getLogger(LogDomains.DPL_LOGGER);
private static Class getDOLLoadingContext () {
try {
if (dolLoadingContext == null) {
dolLoadingContext = Class.forName(DLC_CLASS_NAME,
true, Thread.currentThread().getContextClassLoader());
}
} catch (ClassNotFoundException cnfe) {
_logger.log(Level.WARNING, "enterprise.deployment.class.not.found",
new Object[] {DLC_CLASS_NAME});
}
return dolLoadingContext;
}
/**
* @return a copy of default WebBundleDescriptor populated from
* default-web.xml
*/
public static WebBundleDescriptor getDefaultWebBundleDescriptor() {
initDefaultWebBundleDescriptor();
// when default-web.xml exists, add the default bundle descriptor
// as the base web bundle descriptor
WebBundleDescriptor defaultWebBundleDesc =
new WebBundleDescriptor();
if (defaultWebXMLWbd != null) {
defaultWebBundleDesc.addWebBundleDescriptor(defaultWebXMLWbd);
}
return defaultWebBundleDesc;
}
/**
* initialize the default WebBundleDescriptor from
* default-web.xml
*/
private static synchronized void initDefaultWebBundleDescriptor() {
// it's possible after we attempt to initialize defaultXMLWbd, it
// is still null, for instance, when default-web.xml does not exist
// for these cases, we don't want to call initialize again
if (defaultWebXMLWbd == null && !isDefaultWebXMLInitialized) {
// delegate to DOLLoadingContext
try {
Class dlcClass = getDOLLoadingContext();
Method initWbdMethod =
dlcClass.getMethod(DLC_METHOD_NAME, new Class[0]);
if (initWbdMethod != null) {
defaultWebXMLWbd =
(WebBundleDescriptor)initWbdMethod.invoke(dlcClass,
new Object[0]);
} else {
_logger.log(Level.WARNING,
"enterprise.deployment.method.not.found",
new Object[] {DLC_METHOD_NAME});
}
} catch (Exception e) {
_logger.log(Level.WARNING, e.getMessage());
defaultWebXMLWbd = null;
} finally {
isDefaultWebXMLInitialized = true;
}
}
}
/**
* @return the flag to indicate whether we are parsing the
* default-web.xml
*/
public static boolean isParsingDefaultWebXML() {
return isParsingDefaultWebXML;
}
/**
* sets the flag to indicate whether we are parsing the
* default-web.xml
* @param isDefault
*/
public static void setParsingDefaultWebXML(boolean isDefault) {
isParsingDefaultWebXML = isDefault;
}
}