| /* |
| * 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 result in one which has too many |
| * states. |
| */ |
| public class TooComplexToDeterminizeException extends RuntimeException { |
| private final transient Automaton automaton; |
| private final transient RegExp regExp; |
| private final transient int maxDeterminizedStates; |
| |
| /** Use this constructor when the RegExp failed to convert to an automaton. */ |
| public TooComplexToDeterminizeException(RegExp regExp, TooComplexToDeterminizeException cause) { |
| super( |
| "Determinizing " |
| + regExp.getOriginalString() |
| + " would result in more than " |
| + cause.maxDeterminizedStates |
| + " states.", |
| cause); |
| this.regExp = regExp; |
| this.automaton = cause.automaton; |
| this.maxDeterminizedStates = cause.maxDeterminizedStates; |
| } |
| |
| /** Use this constructor when the automaton failed to determinize. */ |
| public TooComplexToDeterminizeException(Automaton automaton, int maxDeterminizedStates) { |
| super( |
| "Determinizing automaton with " |
| + automaton.getNumStates() |
| + " states and " |
| + automaton.getNumTransitions() |
| + " transitions would result in more than " |
| + maxDeterminizedStates |
| + " states."); |
| this.automaton = automaton; |
| this.regExp = null; |
| this.maxDeterminizedStates = maxDeterminizedStates; |
| } |
| |
| /** 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 number of allowed determinized states. */ |
| public int getMaxDeterminizedStates() { |
| return maxDeterminizedStates; |
| } |
| } |