| /** |
| * 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.zookeeper.graph; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.apache.zookeeper.graph.filterops.*; |
| |
| public abstract class FilterOp { |
| protected List<FilterOp> subOps; |
| protected List<Arg> args; |
| |
| public enum ArgType { |
| STRING, NUMBER, SYMBOL |
| } |
| |
| public FilterOp() { |
| subOps = new ArrayList<FilterOp>(); |
| args = new ArrayList<Arg>(); |
| } |
| |
| public static FilterOp newOp(String op) throws FilterException { |
| if (op.equals("or")) |
| return new OrOp(); |
| if (op.equals("and")) |
| return new AndOp(); |
| if (op.equals("not")) |
| return new NotOp(); |
| if (op.equals("xor")) |
| return new XorOp(); |
| if (op.equals("=")) |
| return new EqualsOp(); |
| if (op.equals("<")) |
| return new LessThanOp(); |
| if (op.equals(">")) |
| return new GreaterThanOp(); |
| |
| throw new FilterException("Invalid operation '"+op+"'"); |
| } |
| |
| public void addSubOp(FilterOp op) { |
| subOps.add(op); |
| } |
| |
| public void addArg(Arg arg) { |
| args.add(arg); |
| } |
| |
| public abstract boolean matches(LogEntry entry) throws FilterException; |
| |
| public String toString() { |
| String op = "(" + getClass().getName(); |
| for (FilterOp f : subOps) { |
| op += " " + f; |
| } |
| for (Arg a : args) { |
| op += " " + a; |
| } |
| return op + ")"; |
| } |
| } |