| /* |
| * Copyright (c) OSGi Alliance (2000, 2015). All Rights Reserved. |
| * |
| * Licensed 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.osgi.framework; |
| |
| import java.util.Dictionary; |
| import java.util.Map; |
| import org.osgi.annotation.versioning.ProviderType; |
| |
| /** |
| * An <a href="http://www.ietf.org/rfc/rfc1960.txt">RFC 1960</a>-based Filter. |
| * <p> |
| * {@code Filter}s can be created by calling |
| * {@link BundleContext#createFilter(String)} or |
| * {@link FrameworkUtil#createFilter(String)} with a filter string. |
| * <p> |
| * A {@code Filter} can be used numerous times to determine if the match |
| * argument matches the filter string that was used to create the {@code Filter}. |
| * <p> |
| * Some examples of LDAP filters are: |
| * |
| * <pre> |
| * "(cn=Babs Jensen)" |
| * "(!(cn=Tim Howes))" |
| * "(&(" + Constants.OBJECTCLASS + "=Person)(|(sn=Jensen)(cn=Babs J*)))" |
| * "(o=univ*of*mich*)" |
| * </pre> |
| * |
| * @since 1.1 |
| * @see "Core Specification, Filters, for a description of the filter string syntax." |
| * @ThreadSafe |
| * @author $Id: b8bf786f2bde901997f24c6f1bcff61320a533fe $ |
| */ |
| @ProviderType |
| public interface Filter { |
| /** |
| * Filter using a service's properties. |
| * <p> |
| * This {@code Filter} is executed using the keys and values of the |
| * referenced service's properties. The keys are looked up in a case |
| * insensitive manner. |
| * |
| * @param reference The reference to the service whose properties are used |
| * in the match. |
| * @return {@code true} if the service's properties match this |
| * {@code Filter}; {@code false} otherwise. |
| */ |
| boolean match(ServiceReference<?> reference); |
| |
| /** |
| * Filter using a {@code Dictionary} with case insensitive key lookup. This |
| * {@code Filter} is executed using the specified {@code Dictionary}'s keys |
| * and values. The keys are looked up in a case insensitive manner. |
| * |
| * @param dictionary The {@code Dictionary} whose key/value pairs are used |
| * in the match. |
| * @return {@code true} if the {@code Dictionary}'s values match this |
| * filter; {@code false} otherwise. |
| * @throws IllegalArgumentException If {@code dictionary} contains case |
| * variants of the same key name. |
| */ |
| boolean match(Dictionary<String, ?> dictionary); |
| |
| /** |
| * Returns this {@code Filter}'s filter string. |
| * <p> |
| * The filter string is normalized by removing whitespace which does not |
| * affect the meaning of the filter. |
| * |
| * @return This {@code Filter}'s filter string. |
| */ |
| @Override |
| String toString(); |
| |
| /** |
| * Compares this {@code Filter} to another {@code Filter}. |
| * |
| * <p> |
| * This implementation returns the result of calling |
| * {@code this.toString().equals(obj.toString())}. |
| * |
| * @param obj The object to compare against this {@code Filter}. |
| * @return If the other object is a {@code Filter} object, then returns the |
| * result of calling {@code this.toString().equals(obj.toString())}; |
| * {@code false} otherwise. |
| */ |
| @Override |
| boolean equals(Object obj); |
| |
| /** |
| * Returns the hashCode for this {@code Filter}. |
| * |
| * <p> |
| * This implementation returns the result of calling |
| * {@code this.toString().hashCode()}. |
| * |
| * @return The hashCode of this {@code Filter}. |
| */ |
| @Override |
| int hashCode(); |
| |
| /** |
| * Filter using a {@code Dictionary}. This {@code Filter} is executed using |
| * the specified {@code Dictionary}'s keys and values. The keys are looked |
| * up in a normal manner respecting case. |
| * |
| * @param dictionary The {@code Dictionary} whose key/value pairs are used |
| * in the match. |
| * @return {@code true} if the {@code Dictionary}'s values match this |
| * filter; {@code false} otherwise. |
| * @since 1.3 |
| */ |
| boolean matchCase(Dictionary<String, ?> dictionary); |
| |
| /** |
| * Filter using a {@code Map}. This {@code Filter} is executed using the |
| * specified {@code Map}'s keys and values. The keys are looked up in a |
| * normal manner respecting case. |
| * |
| * @param map The {@code Map} whose key/value pairs are used in the match. |
| * Maps with {@code null} key or values are not supported. A |
| * {@code null} value is considered not present to the filter. |
| * @return {@code true} if the {@code Map}'s values match this filter; |
| * {@code false} otherwise. |
| * @since 1.6 |
| */ |
| boolean matches(Map<String, ?> map); |
| } |