| /* |
| * 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.lucene.util.automaton; |
| |
| /** This exception is thrown when determinizing an automaton would require too much work. */ |
| public class TooComplexToDeterminizeException extends RuntimeException { |
| private transient final Automaton automaton; |
| private transient final RegExp regExp; |
| private transient final int determinizeWorkLimit; |
| |
| /** Use this constructor when the RegExp failed to convert to an automaton. */ |
| public TooComplexToDeterminizeException(RegExp regExp, TooComplexToDeterminizeException cause) { |
| super("Determinizing " + regExp.getOriginalString() + " would require more than " + |
| cause.determinizeWorkLimit + " effort.", cause); |
| this.regExp = regExp; |
| this.automaton = cause.automaton; |
| this.determinizeWorkLimit = cause.determinizeWorkLimit; |
| } |
| |
| /** Use this constructor when the automaton failed to determinize. */ |
| public TooComplexToDeterminizeException(Automaton automaton, int determinizeWorkLimit) { |
| super("Determinizing automaton with " + automaton.getNumStates() + " states and " + automaton.getNumTransitions() + " transitions would require more than " + determinizeWorkLimit + " effort."); |
| this.automaton = automaton; |
| this.regExp = null; |
| this.determinizeWorkLimit = determinizeWorkLimit; |
| } |
| |
| /** Returns the automaton that caused this exception, if any. */ |
| public Automaton getAutomaton() { |
| return automaton; |
| } |
| |
| /** |
| * Return the RegExp that caused this exception if any. |
| */ |
| public RegExp getRegExp() { |
| return regExp; |
| } |
| |
| /** Get the maximum allowed determinize effort. */ |
| public int getDeterminizeWorkLimit() { |
| return determinizeWorkLimit; |
| } |
| } |