001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.dataformat.bindy.format;
018    
019    import java.text.DecimalFormat;
020    import java.text.NumberFormat;
021    
022    import org.apache.camel.dataformat.bindy.PatternFormat;
023    import org.apache.camel.util.ObjectHelper;
024    
025    public abstract class NumberPatternFormat<T> implements PatternFormat<T> {
026    
027        private String pattern;
028        private DecimalFormat df;
029    
030        public NumberPatternFormat() {
031        }
032    
033        public NumberPatternFormat(String pattern) {
034            this.pattern = pattern;
035        }
036    
037        public String format(T object) throws Exception {
038            ObjectHelper.notNull(this.pattern, "pattern");
039            return this.getNumberFormat().format(object);
040        }
041    
042        @SuppressWarnings("unchecked")
043        public T parse(String string) throws Exception {
044            ObjectHelper.notNull(this.pattern, "pattern");
045            return (T)this.getNumberFormat().parse(string);
046        }
047    
048        protected NumberFormat getNumberFormat() {
049            return new DecimalFormat(pattern);
050        }
051    
052        public String getPattern() {
053            return pattern;
054        }
055    
056        public void setPattern(String pattern) {
057            this.pattern = pattern;
058        }
059    
060    }