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1 package com.genimen.djeneric.tools.generator.util;
2
3 import java.io.BufferedReader  ;
4 import java.io.File ;
5 import java.io.FileReader ;
6 import java.io.IOException ;
7
8 import com.genimen.djeneric.repository.DjPersistenceManager;
9 import com.genimen.djeneric.repository.exceptions.DjenericException;
10 import com.genimen.djeneric.tools.generator.core.DjentelParserEngine;
11 import com.genimen.djeneric.tools.generator.core.ParseException;
12 import com.genimen.djeneric.tools.generator.core.nodes.TemplateNode;
13
14 public class Template
15 {
16 TemplateNode _parseTree = null;
17 TemplateSet _templateSet;
18 boolean _valid = true;
19 String _loadLog = "";
20 String _location;
21 long _timestamp = -1;
22
23 public Template(TemplateSet templateSet, String location)
24 {
25 _templateSet = templateSet;
26 _location = location;
27 try
28 {
29 load(location);
30 }
31 catch (Exception x)
32 {
33 _valid = false;
34 _loadLog = "Error loading template " + _location + "\n" + x.getMessage() + "\n";
35 }
36 }
37
38 private void load(String location) throws ParseException, IOException
39 {
40 _valid = true;
41 File tplFile = new File (location);
42 _timestamp = tplFile.lastModified();
43 String tplCode = readFile(tplFile);
44 _parseTree = DjentelParserEngine.getTree(tplCode);
45 }
46
47 private void reloadIfModified() throws ParseException, IOException
48 {
49 File tplFile = new File (_location);
50 if (_timestamp != tplFile.lastModified())
51 {
52 load(_location);
53 }
54 }
55
56 private String readFile(File inFile) throws IOException
57 {
58 BufferedReader br = new BufferedReader (new FileReader (inFile));
59 StringBuffer src = new StringBuffer (100);
60 String ln;
61 while ((ln = br.readLine()) != null)
62 {
63 src.append(ln);
64 src.append("\n");
65 }
66 br.close();
67 return src.toString();
68 }
69
70 public boolean isValid()
71 {
72 return _valid;
73 }
74
75 public String getLoadLog()
76 {
77 return _loadLog;
78 }
79
80 public boolean isRootBased()
81 {
82 if (_parseTree == null) return true;
83 return _parseTree.isRootBased();
84 }
85
86 public String getObjectType()
87 {
88 if (_parseTree == null) return "<Unknown>";
89
90 return _parseTree.getObjectType();
91 }
92
93 public String getModuleName()
94 {
95 if (_parseTree == null) return "<Unknown>";
96 return _parseTree.getModuleName();
97 }
98
99 public String generate(DjPersistenceManager mgr) throws DjenericException, ParseException, IOException
100 {
101 reloadIfModified();
102 return _parseTree.evaluate(mgr);
103 }
104
105 public String generate(DjPersistenceManager mgr, long objectId) throws DjenericException, ParseException, IOException
106 {
107 reloadIfModified();
108 return _parseTree.evaluate(mgr, objectId);
109 }
110
111 public String getFileName() throws ParseException
112 {
113 return _parseTree.getFileName();
114 }
115
116 public String toString()
117 {
118 return _location;
119 }
120
121 public String getLocation()
122 {
123 return _location;
124 }
125
126 } |
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