/**
* Returns all extension elements.
*
* @return all extension elements.
* @throws FrameworkException
*/
private void initLoaders() throws FrameworkException {
IExtensionRegistry registry = Platform.getExtensionRegistry();
if (registry == null) {
return;
}
IExtensionPoint extensionPoint =
registry.getExtensionPoint(EXTENSION_CONFIG_LOADER_CONTRIBUTOR);
if (extensionPoint == null) {
return;
}
for (IExtension extension : extensionPoint.getExtensions()) {
if (extension != null) {
IConfigurationElement[] elements = extension.getConfigurationElements();
if (elements != null) {
for (IConfigurationElement element : elements) {
if (element != null) {
IDefaultConfigLoader loader =
(IDefaultConfigLoader) element.createExecutableExtension("class");
loaders.add(loader);
}
}
}
}
}
Collections.sort(
loaders,
new Comparator<IDefaultConfigLoader>() {
public int compare(IDefaultConfigLoader arg0, IDefaultConfigLoader arg1) {
return arg0.getPriority() - arg1.getPriority();
}
});
}
/**
* populate the extended extensions information.
*
* @param name
* @param aggrFunc
* @param elem
* @param aggrWrapper
*/
private void populateExtendedAggrInfo(
String name,
IAggregation aggrFunc,
IConfigurationElement elem,
AggrFunctionWrapper aggrWrapper)
throws DataException {
IConfigurationElement[] uiInfo = elem.getChildren(ELEMENT_UIINFO);
assert (uiInfo != null && uiInfo.length == 1);
String paramInfo = uiInfo[0].getAttribute(ATTRIBUTE_PARAMETER_META_INFO);
String textInfo = uiInfo[0].getAttribute(ATTRIBUTE_TEXT_DATA);
aggrWrapper.setDisplayName(textInfo);
// populate parameters to the aggrWrapper
List paramList = new ArrayList();
String[] paramInfos = paramInfo.split(","); // $NON-NLS-1$
boolean[] paramFlags = aggrFunc.getParameterDefn();
if (paramInfos != null && paramInfos.length > 0 && paramFlags != null) {
if (paramInfos.length != paramFlags.length)
throw new DataException(ResourceConstants.INCONSISTENT_AGGREGATION_ARGUMENT_DEFINITION);
// populateDataFiledParameterDefn( paramList );
for (int k = 0; k < paramInfos.length; k++) {
final String s = paramInfos[k].trim();
int index = s.indexOf(' ');
String paramName = null;
if (index > 0) {
paramName = s.substring(index + 1).trim();
} else {
paramName = paramInfos[k];
}
ParameterDefn paramDefn = new ParameterDefn(paramName, paramName, !paramFlags[k], true);
paramList.add(paramDefn);
}
}
IParameterDefn[] params = new IParameterDefn[paramList.size()];
paramList.toArray(params);
aggrWrapper.setParameterDefn(params);
}