| /* |
| * 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 WARRANTIES OR 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.felix.dm.impl.index.multiproperty; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.StringTokenizer; |
| import java.util.TreeSet; |
| |
| /** |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class Filter { |
| private boolean m_valid = true; |
| private Map<String, Property> m_properties = new HashMap<>(); |
| private Set<String> m_propertyKeys = new TreeSet<>(String.CASE_INSENSITIVE_ORDER); |
| |
| private Filter() { |
| } |
| |
| // Sample valid filter string (&(objectClass=OBJECTCLASS)(&(model=MODEL)(concept=CONCEPT)(role=ROLE)(!(context=*)))) |
| public static Filter parse(String filterString) { |
| Filter filter = new Filter(); |
| StringTokenizer tokenizer = new StringTokenizer(filterString, "(&|=)", true); |
| |
| String token = null; |
| String prevToken = null; |
| String key = null; |
| StringBuilder valueBuilder = new StringBuilder(); |
| boolean negate = false; |
| |
| while (tokenizer.hasMoreTokens()) { |
| prevToken = token; |
| token = tokenizer.nextToken(); |
| if (token.equals("|")) { |
| // we're not into OR's |
| filter.m_valid = false; |
| break; |
| } |
| if (token.equals("!")) { |
| negate = true; |
| } else if (token.equals("=")) { |
| key = prevToken.toLowerCase(); |
| } else if (key != null) { |
| if (!token.equals(")")) { |
| valueBuilder.append(token); // might be superseded by a & |
| } |
| if (token.equals(")")) { |
| // set complete |
| if (filter.m_properties.containsKey(key)) { |
| // set current property to multivalue |
| Property property = filter.m_properties.get(key); |
| property.addValue(valueBuilder.toString(), negate); |
| } else { |
| Property property = new Property(negate, key, valueBuilder.toString()); |
| filter.m_properties.put(key, property); |
| filter.m_propertyKeys.add(key); |
| } |
| negate = false; |
| key = null; |
| valueBuilder = new StringBuilder(); |
| } |
| } |
| } |
| return filter; |
| } |
| |
| public boolean containsProperty(String propertyKey) { |
| return m_properties.containsKey(propertyKey); |
| } |
| |
| public Set<String> getPropertyKeys() { |
| return m_properties.keySet(); |
| } |
| |
| public Property getProperty(String key) { |
| return m_properties.get(key); |
| } |
| |
| public boolean isValid() { |
| if (!m_valid) { |
| return m_valid; |
| } else { |
| // also check the properties |
| Iterator<Property> propertiesIterator = m_properties.values().iterator(); |
| while (propertiesIterator.hasNext()) { |
| Property property = propertiesIterator.next(); |
| if (!property.isValid()) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| protected MultiPropertyKey createKey(int filterSize) { |
| MultiPropertyKey multiPropertyKey = new MultiPropertyKey(0); |
| Iterator<String> keys = m_propertyKeys.iterator(); |
| while (keys.hasNext()) { |
| String key = keys.next(); |
| Property prop = m_properties.get(key); |
| if (!prop.isWildcard()) { |
| Iterator<String> values = prop.getValues().iterator(); |
| while (values.hasNext()) { |
| String value = values.next(); |
| multiPropertyKey.append(toKey(key, value)); |
| } |
| } |
| } |
| return multiPropertyKey; |
| } |
| |
| protected MultiPropertyKey toKey(String key, Object value) { |
| MultiPropertyKey multiPropertyKey = new MultiPropertyKey(1); |
| multiPropertyKey.add(key, value.toString()); |
| return multiPropertyKey; |
| } |
| |
| } |