| 1 | /* |
| 2 | * Copyright 2006-2007 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 | package org.springframework.batch.item.file.mapping; |
| 17 | |
| 18 | |
| 19 | /** |
| 20 | * Pass through {@link FieldSetMapper} useful for passing a {@link FieldSet} |
| 21 | * back directly rather than a mapped object. |
| 22 | * |
| 23 | * @author Lucas Ward |
| 24 | * |
| 25 | */ |
| 26 | public class PassThroughFieldSetMapper implements FieldSetMapper, FieldSetCreator { |
| 27 | |
| 28 | /* |
| 29 | * (non-Javadoc) |
| 30 | * @see org.springframework.batch.io.file.FieldSetMapper#mapLine(org.springframework.batch.io.file.FieldSet) |
| 31 | */ |
| 32 | public Object mapLine(FieldSet fs) { |
| 33 | return fs; |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * If the input is a {@link FieldSet} pass it to the caller. Otherwise |
| 38 | * convert to a String with toString() and convert it to a single field |
| 39 | * {@link FieldSet}. |
| 40 | * |
| 41 | * @see org.springframework.batch.item.file.mapping.FieldSetCreator#mapItem(java.lang.Object) |
| 42 | */ |
| 43 | public FieldSet mapItem(Object data) { |
| 44 | if (data instanceof FieldSet) { |
| 45 | return (FieldSet) data; |
| 46 | } |
| 47 | if (!(data instanceof String)) { |
| 48 | data = "" + data; |
| 49 | } |
| 50 | return new DefaultFieldSet(new String[] { (String) data }); |
| 51 | } |
| 52 | |
| 53 | } |