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1
5 package com.tc.config;
6
7 import org.apache.xmlbeans.SchemaType;
8 import org.apache.xmlbeans.XmlException;
9 import org.apache.xmlbeans.XmlOptions;
10
11 import com.tc.config.schema.migrate.ConfigUpdate;
12 import com.tc.config.schema.migrate.V1toV2;
13 import com.tc.config.schema.migrate.V2toV3;
14
15 import java.io.ByteArrayInputStream  ;
16 import java.io.File ;
17 import java.io.FileInputStream ;
18 import java.io.IOException ;
19 import java.io.InputStream ;
20 import java.net.URL ;
21
22
25 public final class Loader {
26
27 private final ConfigUpdate[] converters;
28
29 public Loader() {
30 converters = new ConfigUpdate[] { new V2toV3(), new V1toV2() };
32 }
33
34 private com.terracottatech.config.TcConfigDocument convert(InputStream in, XmlOptions xmlOptions) throws IOException ,
35 XmlException {
36 byte[] data = new byte[in.available()];
37 in.read(data);
38 in.close();
39 ByteArrayInputStream ain = new ByteArrayInputStream (data);
40 SchemaType type = com.terracottatech.config.TcConfigDocument.type;
41 if (xmlOptions == null) xmlOptions = new XmlOptions();
42 xmlOptions.setDocumentType(type);
43 try {
44 return com.terracottatech.config.TcConfigDocument.Factory.parse(ain, xmlOptions);
45 } catch (XmlException e) {
46 ain.reset();
47 return com.terracottatech.config.TcConfigDocument.Factory.parse(updateConfig(ain, 0, xmlOptions), xmlOptions);
48 }
49 }
50
51 private synchronized InputStream updateConfig(InputStream in, int index, XmlOptions xmlOptions) throws IOException ,
52 XmlException {
53 byte[] data = new byte[in.available()];
54 in.read(data);
55 in.close();
56 ByteArrayInputStream ain = new ByteArrayInputStream (data);
57 try {
58 return converters[index].convert(ain, xmlOptions);
59 } catch (XmlException e) {
60 if (index == converters.length - 1) throw e;
61 ain.reset();
62 return converters[index].convert(updateConfig(ain, index + 1, xmlOptions), xmlOptions);
63 }
64 }
65
66 public com.terracottatech.config.TcConfigDocument parse(File file) throws IOException , XmlException {
67 return convert(new FileInputStream (file), null);
68 }
69
70 public com.terracottatech.config.TcConfigDocument parse(File file, XmlOptions xmlOptions) throws IOException ,
71 XmlException {
72 return convert(new FileInputStream (file), xmlOptions);
73 }
74
75 public com.terracottatech.config.TcConfigDocument parse(String xmlText) throws IOException , XmlException {
76 return convert(new ByteArrayInputStream (xmlText.getBytes()), null);
77 }
78
79 public com.terracottatech.config.TcConfigDocument parse(String xmlText, XmlOptions xmlOptions) throws IOException ,
80 XmlException {
81 return convert(new ByteArrayInputStream (xmlText.getBytes()), xmlOptions);
82 }
83
84 public com.terracottatech.config.TcConfigDocument parse(InputStream stream) throws IOException , XmlException {
85 return convert(stream, null);
86 }
87
88 public com.terracottatech.config.TcConfigDocument parse(InputStream stream, XmlOptions xmlOptions)
89 throws IOException , XmlException {
90 return convert(stream, xmlOptions);
91 }
92
93 public com.terracottatech.config.TcConfigDocument parse(URL url) throws IOException , XmlException {
94 return convert(url.openStream(), null);
95 }
96
97 public com.terracottatech.config.TcConfigDocument parse(URL url, XmlOptions xmlOptions) throws IOException ,
98 XmlException {
99 return convert(url.openStream(), xmlOptions);
100 }
101
102 public boolean testIsOld(File file) throws IOException , XmlException {
103 return !testIsCurrent(file);
104 }
105
106 public boolean testIsCurrent(File file) throws IOException , XmlException {
107 com.terracottatech.config.TcConfigDocument.Factory.parse(new FileInputStream (file));
108 return true;
109 }
110
111 public void updateToCurrent(File file) throws IOException , XmlException {
112 XmlOptions options = null;
113 synchronized (converters) {
114 options = converters[0].createDefaultXmlOptions();
115 }
116 com.terracottatech.config.TcConfigDocument doc = convert(new FileInputStream (file), options);
117 doc.save(file);
118 }
119 }
120 |
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