| package org.apache.maven.index.expr; |
| |
| /* |
| * 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. |
| */ |
| |
| /** |
| * A simple string based implementation of SearchExpression that is immutable. |
| * |
| * @author cstamas |
| */ |
| public class StringSearchExpression |
| implements SearchExpression |
| { |
| private final String expression; |
| |
| public StringSearchExpression( final String expression ) |
| { |
| if ( expression == null || expression.trim().length() == 0 ) |
| { |
| throw new IllegalArgumentException( "The expression's string cannot be empty!" ); |
| } |
| |
| this.expression = expression; |
| } |
| |
| public String getStringValue() |
| { |
| return expression; |
| } |
| } |