1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
package org.mule.routing.filters.xml; |
12 | |
|
13 | |
import org.mule.umo.UMOFilter; |
14 | |
import org.mule.umo.UMOMessage; |
15 | |
|
16 | |
import java.io.ByteArrayInputStream; |
17 | |
import java.io.StringReader; |
18 | |
|
19 | |
import javax.xml.stream.XMLInputFactory; |
20 | |
import javax.xml.stream.XMLStreamConstants; |
21 | |
import javax.xml.stream.XMLStreamException; |
22 | |
import javax.xml.stream.XMLStreamReader; |
23 | |
|
24 | |
|
25 | |
|
26 | |
|
27 | |
|
28 | |
|
29 | |
public class IsXmlFilter implements UMOFilter |
30 | |
{ |
31 | 14 | private final XMLInputFactory factory = XMLInputFactory.newInstance(); |
32 | |
|
33 | |
|
34 | |
|
35 | |
public IsXmlFilter() |
36 | |
{ |
37 | 14 | super(); |
38 | 14 | } |
39 | |
|
40 | |
public boolean accept(UMOMessage obj) |
41 | |
{ |
42 | 14 | return accept(obj.getPayload()); |
43 | |
} |
44 | |
|
45 | |
private boolean accept(Object obj) |
46 | |
{ |
47 | 14 | XMLStreamReader parser = null; |
48 | |
|
49 | |
try |
50 | |
{ |
51 | 14 | if (obj instanceof String) |
52 | |
{ |
53 | 10 | parser = factory.createXMLStreamReader(new StringReader((String)obj)); |
54 | |
} |
55 | 4 | else if (obj instanceof byte[]) |
56 | |
{ |
57 | 2 | parser = factory.createXMLStreamReader(new ByteArrayInputStream((byte[])obj)); |
58 | |
} |
59 | |
else |
60 | |
{ |
61 | |
|
62 | 2 | return false; |
63 | |
} |
64 | |
|
65 | 1948 | while (parser.next() != XMLStreamConstants.END_DOCUMENT) |
66 | |
{ |
67 | |
|
68 | |
} |
69 | |
|
70 | 8 | return true; |
71 | |
} |
72 | 4 | catch (XMLStreamException ex) |
73 | |
{ |
74 | 4 | return false; |
75 | |
} |
76 | |
finally |
77 | |
{ |
78 | 14 | if (parser != null) |
79 | |
{ |
80 | |
try |
81 | |
{ |
82 | 12 | parser.close(); |
83 | |
} |
84 | 0 | catch (XMLStreamException ignored) |
85 | |
{ |
86 | |
|
87 | 26 | } |
88 | |
} |
89 | |
} |
90 | |
} |
91 | |
|
92 | |
} |