/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIESOR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.aries.application.utils;
import static org.apache.aries.application.utils.AppConstants.LOG_ENTRY;
import static org.apache.aries.application.utils.AppConstants.LOG_EXIT;
import java.util.regex.Pattern;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FilterUtils
{
private static final Pattern regexp = Pattern.compile("\\(mandatory:.*?\\)");
private static final Logger logger = LoggerFactory.getLogger(FilterUtils.class);
/**
* Filters we generate may contain stanzas like (mandatory:<*symbolicname)
* These are for OBR, and are not OSGi friendly!!! This method removes them.
*
* @param filter
* @return A filter with the mandatory stanzas removed or null if a null filter is supplied
*/
public static String removeMandatoryFilterToken(String filter) {
logger.debug(LOG_ENTRY, "areMandatoryAttributesPresent", new Object[]{filter});
if(filter != null) {
filter = regexp.matcher(filter).replaceAll("");
int openBraces = 0;
for (int i=0; openBraces < 3; i++) {
i = filter.indexOf('(', i);
if (i == -1) {
break;
} else {
openBraces++;
}
}
// Need to prune (& or (| off front and ) off end
if (openBraces < 3 &&
(filter.startsWith("(&") || filter.startsWith("(|"))) {
filter = filter.substring(2, filter.length() - 1);
}
}
logger.debug(LOG_EXIT, "removeMandatoryFilterToken", filter);
return filter;
}
}