| /* |
| * 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. |
| */ |
| package org.apache.lucene.queryparser.flexible.standard.config; |
| |
| import java.text.DateFormat; |
| import java.text.FieldPosition; |
| import java.text.Format; |
| import java.text.NumberFormat; |
| import java.text.ParsePosition; |
| import java.util.Date; |
| |
| /** |
| * This {@link Format} parses {@link Long} into date strings and vice-versa. It |
| * uses the given {@link DateFormat} to parse and format dates, but before, it |
| * converts {@link Long} to {@link Date} objects or vice-versa. |
| */ |
| public class NumberDateFormat extends NumberFormat { |
| |
| private static final long serialVersionUID = 964823936071308283L; |
| |
| final private DateFormat dateFormat; |
| |
| /** |
| * Constructs a {@link NumberDateFormat} object using the given {@link DateFormat}. |
| * |
| * @param dateFormat {@link DateFormat} used to parse and format dates |
| */ |
| public NumberDateFormat(DateFormat dateFormat) { |
| this.dateFormat = dateFormat; |
| } |
| |
| @Override |
| public StringBuffer format(double number, StringBuffer toAppendTo, |
| FieldPosition pos) { |
| return dateFormat.format(new Date((long) number), toAppendTo, pos); |
| } |
| |
| @Override |
| public StringBuffer format(long number, StringBuffer toAppendTo, |
| FieldPosition pos) { |
| return dateFormat.format(new Date(number), toAppendTo, pos); |
| } |
| |
| @Override |
| public Number parse(String source, ParsePosition parsePosition) { |
| final Date date = dateFormat.parse(source, parsePosition); |
| return (date == null) ? null : date.getTime(); |
| } |
| |
| @Override |
| public StringBuffer format(Object number, StringBuffer toAppendTo, |
| FieldPosition pos) { |
| return dateFormat.format(number, toAppendTo, pos); |
| } |
| |
| } |