1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.index.expr;
20
21 /**
22 * A simple string based implementation of SearchExpression that is immutable.
23 *
24 * @author cstamas
25 */
26 public class StringSearchExpression implements SearchExpression {
27 private final String expression;
28
29 public StringSearchExpression(final String expression) {
30 if (expression == null || expression.isBlank()) {
31 throw new IllegalArgumentException("The expression's string cannot be empty!");
32 }
33
34 this.expression = expression;
35 }
36
37 public String getStringValue() {
38 return expression;
39 }
40 }