1 /*
2 * Copyright 2009-2013 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package com.orangesignal.csv.filters;
18
19 import java.util.List;
20
21 /**
22 * 指定された項目名に対応する区切り文字形式データの値が空かどうかでフィルタを適用する区切り文字形式データフィルタの実装です。
23 *
24 * @author Koji Sugisawa
25 * @since 1.2.3
26 */
27 public class ColumnNameEmptyExpression extends ColumnNameExpression {
28
29 /**
30 * コンストラクタです。
31 *
32 * @param name 項目名
33 * @throws IllegalArgumentException <code>name</code> が <code>null</code> の場合
34 */
35 protected ColumnNameEmptyExpression(final String name) {
36 super(name);
37 }
38
39 @Override
40 public boolean accept(final List<String> header, final List<String> values) {
41 final int position = header.indexOf(name);
42 if (position == -1) {
43 throw new IllegalArgumentException(String.format("Invalid column name %s", name));
44 }
45 return CsvExpressionUtils.isEmpty(values, position);
46 }
47
48 }