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1 package org.sapia.soto.config;
2
3 import org.sapia.soto.Debug;
4 import org.sapia.soto.SotoApplicationFactory;
5 import org.sapia.soto.SotoContainer;
6 import org.sapia.soto.util.FileResource;
7 import org.sapia.soto.util.Param;
8 import org.sapia.soto.util.Resource;
9 import org.sapia.soto.util.Utils;
10
11 import org.sapia.util.text.MapContext;
12 import org.sapia.util.text.TemplateContextIF;
13 import org.sapia.util.xml.ProcessingException;
14 import org.sapia.util.xml.confix.ConfigurationException;
15 import org.sapia.util.xml.confix.Dom4jProcessor;
16 import org.sapia.util.xml.confix.ObjectCreationCallback;
17
18 import java.io.File  ;
19 import java.io.IOException ;
20 import java.io.InputStream ;
21
22 import java.util.ArrayList ;
23 import java.util.HashMap ;
24 import java.util.List ;
25 import java.util.Map ;
26 import java.util.Stack ;
27
28
29
37 public class Include implements ObjectCreationCallback {
38 private static Stack _includes = new Stack ();
39 private String _uri;
40 private Resource _resource;
41 private SotoContainer _container;
42 private SotoApplicationFactory _fac;
43 private List _params = new ArrayList ();
44
45
48 public Include(SotoContainer container, SotoApplicationFactory fac) {
49 _container = container;
50 _fac = fac;
51 }
52
53 public void setUri(String uri) {
54 _uri = uri;
55 }
56
57 public String getUri() {
58 return _uri;
59 }
60
61 public Param createParam() {
62 Param p = new Param();
63 _params.add(p);
64
65 return p;
66 }
67
68
71 public Object onCreate() throws ConfigurationException {
72 if (_uri == null) {
73 throw new ConfigurationException(
74 "'uri' attribute not set on 'include' element");
75 }
76
77 try {
78 if (_resource == null) {
79 Debug.debug("Including: " + _uri);
80
81 if (Utils.isRelativePath(_uri)) {
82 Debug.debug("path is relative: " + _uri);
83
84 if (_includes.size() == 0) {
85 File f = new File (Utils.chopScheme(_uri));
86 _resource = new FileResource(f);
87 Debug.debug("resource: " + f.getAbsolutePath());
88 _uri = f.getAbsolutePath();
89 } else {
90 Include last = (Include) _includes.peek();
91 String uri = last.getUri();
92 _uri = Utils.getRelativePath(uri, _uri, true);
93 Debug.debug("resource: " + _uri);
94 _resource = _container.getResourceHandlerFor(Utils.getScheme(_uri))
95 .getResourceObject(_uri);
96 }
97 } else {
98 if (Utils.hasScheme(_uri)) {
99 _resource = _container.getResourceHandlerFor(Utils.getScheme(_uri))
100 .getResourceObject(_uri);
101 } else {
102 File f = new File (Utils.chopScheme(_uri));
103 _resource = new FileResource(f);
104 _uri = f.getAbsolutePath();
105 }
106 }
107 }
108
109 _includes.push(this);
110
111 Dom4jProcessor proc = new Dom4jProcessor(_fac);
112
113 TemplateContextIF ctx = getNestedContext();
114 ThreadState.push(new ThreadState(ctx));
115
116 InputStream input = null;
117
118 try {
119 input = _resource.getInputStream();
120
121 Object toReturn = proc.process(Utils.replaceVars(ctx, input, _uri));
122 Object lastObject = ThreadState.currentState().getLastObject();
123
124 return toReturn;
125 } finally {
126 if (input != null) {
127 input.close();
128 ThreadState.pop();
129 }
130
131 Include inc = (Include) _includes.pop();
132 }
133 } catch (ProcessingException e) {
134 throw new ConfigurationException("Could not process resource for: " +
135 _uri, e);
136 } catch (IOException e) {
137 throw new ConfigurationException("Could not get resource for: " + _uri, e);
138 }
139 }
140
141 public Resource getResource() {
142 if (_resource == null) {
143 throw new IllegalStateException ("Included resource not set");
144 }
145
146 return _resource;
147 }
148
149 private TemplateContextIF getNestedContext() {
150 if (_params.size() == 0) {
151 return _fac.getTemplateContext();
152 }
153
154 Map params = new HashMap ();
155 Param p;
156
157 for (int i = 0; i < _params.size(); i++) {
158 p = (Param) _params.get(i);
159
160 if (p.getName() != null) {
161 params.put(p.getName(), p.getValue());
162 }
163 }
164
165 MapContext nested = new MapContext(params, _fac.getTemplateContext(), false);
166
167 return nested;
168 }
169 }
170 |
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