1 /*
2 * ModeShape (http://www.modeshape.org)
3 * See the COPYRIGHT.txt file distributed with this work for information
4 * regarding copyright ownership. Some portions may be licensed
5 * to Red Hat, Inc. under one or more contributor license agreements.
6 * See the AUTHORS.txt file in the distribution for a full listing of
7 * individual contributors.
8 *
9 * ModeShape is free software. Unless otherwise indicated, all code in ModeShape
10 * is licensed to you under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation; either version 2.1 of
12 * the License, or (at your option) any later version.
13 *
14 * ModeShape is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this software; if not, write to the Free
21 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
23 */
24 package org.modeshape.sequencer.text;
25
26 import java.util.regex.Pattern;
27 import java.util.regex.PatternSyntaxException;
28 import org.modeshape.common.util.CheckArg;
29
30 /**
31 * An text sequencer implementation that uses a {@link #setSplitPattern(String) regular-expression pattern} to split incoming rows
32 * into columns. By default, this class uses the pattern {@code ","} to parse files on commas.
33 *
34 * @see AbstractTextSequencer
35 * @see Pattern
36 */
37 public class DelimitedTextSequencer extends AbstractTextSequencer {
38
39 private Pattern splitPattern = Pattern.compile(",");
40
41 /**
42 * Sets the regular expression to use to split incoming rows.
43 *
44 * @param regularExpression the regular expression to use to split incoming rows; may not be null.
45 * @throws PatternSyntaxException if {@code regularExpression} does not represent a valid regular expression that can be
46 * {@link Pattern#compile(String) compiled into a pattern}.
47 */
48 public void setSplitPattern( String regularExpression ) throws PatternSyntaxException {
49 CheckArg.isNotNull(regularExpression, "regularExpression");
50
51 splitPattern = Pattern.compile(regularExpression);
52 }
53
54 @Override
55 protected String[] parseLine( String line ) {
56 return splitPattern.split(line);
57 }
58
59 }