@Override
public TrackingStruct addingService(ServiceReference<ResourceAnalyzer> reference) {
TrackingStruct struct = new TrackingStruct();
try {
String filterStr = (String) reference.getProperty(ResourceAnalyzer.FILTER);
Filter filter = (filterStr != null) ? FrameworkUtil.createFilter(filterStr) : null;
ResourceAnalyzer analyzer = context.getService(reference);
if (analyzer == null) return null;
struct = new TrackingStruct();
struct.analyzer = analyzer;
struct.filter = filter;
struct.valid = true;
indexer.addAnalyzer(analyzer, filter);
} catch (InvalidSyntaxException e) {
struct.valid = false;
log.log(
reference,
LogService.LOG_ERROR,
"Ignoring ResourceAnalyzer due to invalid filter expression",
e);
}
return struct;
}
Filter getAuthFilter() throws InvalidSyntaxException {
StringBuilder sb = new StringBuilder("("); // $NON-NLS-1$
sb.append(ServerConstants.CONFIG_AUTH_NAME);
sb.append('=');
sb.append(getAuthName());
sb.append(')');
return FrameworkUtil.createFilter(sb.toString());
}
/**
* Parse filter string into a Filter object.
*
* @param filterString The filter string to parse.
* @return a Filter for this bundle. If the specified filterString is not a filter expression,
* then {@code null} is returned.
* @throws IllegalArgumentException If the filter syntax is invalid.
*/
private static Filter parseFilter(String filterString) {
filterString = filterString.trim();
if (filterString.charAt(0) != '(') {
return null;
}
try {
return FrameworkUtil.createFilter(filterString);
} catch (InvalidSyntaxException e) {
IllegalArgumentException iae = new IllegalArgumentException("invalid filter");
iae.initCause(e);
throw iae;
}
}
@Override
public void modifiedService(ServiceReference<ResourceAnalyzer> reference, TrackingStruct struct) {
if (struct.valid) {
indexer.removeAnalyzer(struct.analyzer, struct.filter);
}
try {
String filterStr = (String) reference.getProperty(ResourceAnalyzer.FILTER);
Filter filter = (filterStr != null) ? FrameworkUtil.createFilter(filterStr) : null;
struct = new TrackingStruct();
struct.filter = filter;
struct.valid = true;
indexer.addAnalyzer(struct.analyzer, filter);
} catch (InvalidSyntaxException e) {
struct.valid = false;
log.log(
reference,
LogService.LOG_ERROR,
"Ignoring ResourceAnalyzer due to invalid filter expression",
e);
}
}
public Filter createFilter(String filter) throws InvalidSyntaxException {
return FrameworkUtil.createFilter(filter);
}