Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
DumpObject |
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1 | // Copyright 2005 The Apache Software Foundation |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | ||
15 | package org.apache.tapestry.contrib.components; |
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16 | ||
17 | import java.io.BufferedOutputStream; |
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18 | import java.io.CharArrayWriter; |
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19 | import java.io.ObjectOutputStream; |
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20 | ||
21 | import org.apache.tapestry.AbstractComponent; |
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22 | import org.apache.tapestry.IMarkupWriter; |
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23 | import org.apache.tapestry.IRequestCycle; |
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24 | import org.apache.tapestry.util.io.BinaryDumpOutputStream; |
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25 | ||
26 | /** |
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27 | * Used to dump out an object's serialized representation in a mix of hex and ascii. The output is |
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28 | * formatted for a fixed width font, typically should be enclosed in <pre> tags. |
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29 | * |
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30 | * @see org.apache.tapestry.util.io.BinaryDumpOutputStream |
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31 | * @author Howard M. Lewis Ship |
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32 | * @since 4.0 |
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33 | */ |
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34 | ||
35 | 3 | public abstract class DumpObject extends AbstractComponent |
36 | { |
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37 | // Parameters: |
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38 | ||
39 | public abstract Object getObject(); |
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40 | ||
41 | protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) |
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42 | { |
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43 | 2 | if (cycle.isRewinding()) |
44 | 1 | return; |
45 | ||
46 | 1 | String asText = convert(getObject()); |
47 | ||
48 | 1 | writer.print(asText); |
49 | 1 | } |
50 | ||
51 | String convert(Object object) |
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52 | { |
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53 | try |
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54 | { |
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55 | 2 | CharArrayWriter writer = new CharArrayWriter(); |
56 | 2 | BinaryDumpOutputStream bdos = new BinaryDumpOutputStream(writer); |
57 | 2 | ObjectOutputStream oos = new ObjectOutputStream(new BufferedOutputStream(bdos)); |
58 | ||
59 | 2 | oos.writeObject(object); |
60 | ||
61 | 1 | oos.close(); |
62 | ||
63 | 1 | return writer.toString(); |
64 | } |
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65 | 1 | catch (Exception ex) |
66 | { |
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67 | 1 | return ex.toString(); |
68 | } |
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69 | } |
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70 | } |