private CriteriaDefinitionContribution[] readCriteriaDefinitionContributions(String locale) {
CriteriaDefinitionContribution[] cached;
List<CriteriaDefinitionContribution> contributions = new ArrayList<>();
AbstractCriteriaDefinitionProvider[] providers = getCriteriaDefinitionProviders();
for (int i = 0; i < providers.length; ++i) {
ICriteriaDefinitionContribution[] contrib;
try {
contrib = providers[i].getCriteriaDefinitionContributions(locale);
} catch (Throwable t) {
// log, and skip the offending provider
String msg =
"Error getting help criteria definition data from provider: "
+ providers[i].getClass().getName()
+ " (skipping provider)"; //$NON-NLS-1$ //$NON-NLS-2$
HelpPlugin.logError(msg, t);
continue;
}
// check for nulls and root element
for (int j = 0; j < contrib.length; ++j) {
if (contrib[j] == null) {
String msg =
"Help criteria definition provider \""
+ providers[i].getClass().getName()
+ "\" returned a null contribution (skipping)"; //$NON-NLS-1$ //$NON-NLS-2$
HelpPlugin.logError(msg);
} else if (contrib[j].getCriteriaDefinition() == null) {
String msg =
"Help criteria definition provider \""
+ providers[i].getClass().getName()
+ "\" returned a contribution with a null root element (expected a \""
+ CriteriaDefinition.NAME
+ "\" element; skipping)"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
HelpPlugin.logError(msg);
} else {
CriteriaDefinitionContribution contribution = new CriteriaDefinitionContribution();
contribution.setId(contrib[j].getId());
contribution.setLocale(contrib[j].getLocale());
ICriteriaDefinition criteria = contrib[j].getCriteriaDefinition();
contribution.setCriteriaDefinition(
criteria instanceof CriteriaDefinition
? (CriteriaDefinition) criteria
: (CriteriaDefinition) UAElementFactory.newElement(criteria));
contributions.add(contribution);
}
}
}
cached = contributions.toArray(new CriteriaDefinitionContribution[contributions.size()]);
return cached;
}
/*
* Internal hook for unit testing.
*/
public AbstractCriteriaDefinitionProvider[] getCriteriaDefinitionProviders() {
if (null == criteriaDefinitionProviders) {
List<AbstractCriteriaDefinitionProvider> providers = new ArrayList<>();
IExtensionRegistry registry = Platform.getExtensionRegistry();
IConfigurationElement[] elements =
registry.getConfigurationElementsFor(EXTENSION_POINT_ID_CRITERIA_DEFINITION);
for (int i = 0; i < elements.length; ++i) {
IConfigurationElement elem = elements[i];
if (elem.getName().equals(ELEMENT_NAME_CRITERIA_DEFINITION_PROVIDER)) {
try {
AbstractCriteriaDefinitionProvider provider =
(AbstractCriteriaDefinitionProvider)
elem.createExecutableExtension(ATTRIBUTE_NAME_CLASS);
providers.add(provider);
} catch (CoreException e) {
// log and skip
String msg =
"Error instantiating help keyword index provider class \""
+ elem.getAttribute(ATTRIBUTE_NAME_CLASS)
+ '"'; //$NON-NLS-1$
HelpPlugin.logError(msg, e);
}
}
}
criteriaDefinitionProviders =
providers.toArray(new AbstractCriteriaDefinitionProvider[providers.size()]);
}
return criteriaDefinitionProviders;
}