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Java > Open Source Codes > org > apache > fop > pdf > NullFilter


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 /* $Id: NullFilter.java 426576 2006-07-28 15:44:37Z jeremias $ */
19  
20 package org.apache.fop.pdf;
21
22 import java.io.IOException JavaDoc;
23 import java.io.OutputStream JavaDoc;
24
25 /**
26  * Null Filter class. The content is just passed through. The class is used to
27  * override the default Flate filter for debugging purposes.
28  */
29 public class NullFilter extends PDFFilter {
30
31     /**
32      * @see org.apache.fop.pdf.PDFFilter#getName()
33      */
34     public String JavaDoc getName() {
35         return "";
36     }
37
38     /**
39      * @see org.apache.fop.pdf.PDFFilter#getDecodeParms()
40      */
41     public String JavaDoc getDecodeParms() {
42         return null;
43     }
44
45     /**
46      * @see org.apache.fop.pdf.PDFFilter#applyFilter(OutputStream)
47      */
48     public OutputStream JavaDoc applyFilter(OutputStream JavaDoc out) throws IOException JavaDoc {
49         return out;
50         //No active filtering, NullFilter does nothing
51 }
52
53 }
54
55
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