001/*
002 * Copyright 2002-2012 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.beans.propertyeditors;
018
019import java.beans.PropertyEditorSupport;
020import java.util.regex.Pattern;
021
022/**
023 * Editor for {@code java.util.regex.Pattern}, to directly populate a Pattern property.
024 * Expects the same syntax as Pattern's {@code compile} method.
025 *
026 * @author Juergen Hoeller
027 * @since 2.0.1
028 * @see java.util.regex.Pattern
029 * @see java.util.regex.Pattern#compile(String)
030 */
031public class PatternEditor extends PropertyEditorSupport {
032
033        private final int flags;
034
035
036        /**
037         * Create a new PatternEditor with default settings.
038         */
039        public PatternEditor() {
040                this.flags = 0;
041        }
042
043        /**
044         * Create a new PatternEditor with the given settings.
045         * @param flags the {@code java.util.regex.Pattern} flags to apply
046         * @see java.util.regex.Pattern#compile(String, int)
047         * @see java.util.regex.Pattern#CASE_INSENSITIVE
048         * @see java.util.regex.Pattern#MULTILINE
049         * @see java.util.regex.Pattern#DOTALL
050         * @see java.util.regex.Pattern#UNICODE_CASE
051         * @see java.util.regex.Pattern#CANON_EQ
052         */
053        public PatternEditor(int flags) {
054                this.flags = flags;
055        }
056
057
058        @Override
059        public void setAsText(String text) {
060                setValue(text != null ? Pattern.compile(text, this.flags) : null);
061        }
062
063        @Override
064        public String getAsText() {
065                Pattern value = (Pattern) getValue();
066                return (value != null ? value.pattern() : "");
067        }
068
069}