|
1
21 package com.jaspersoft.jasperserver.api.engine.jasperreports.util;
22
23 import java.io.InputStream  ;
24 import java.util.ArrayList ;
25 import java.util.HashSet ;
26 import java.util.List ;
27 import java.util.Set ;
28
29 import net.sf.jasperreports.engine.JRBand;
30 import net.sf.jasperreports.engine.JRElement;
31 import net.sf.jasperreports.engine.JRException;
32 import net.sf.jasperreports.engine.JRExpression;
33 import net.sf.jasperreports.engine.JRExpressionChunk;
34 import net.sf.jasperreports.engine.JRFont;
35 import net.sf.jasperreports.engine.JRGroup;
36 import net.sf.jasperreports.engine.JRImage;
37 import net.sf.jasperreports.engine.JRReport;
38 import net.sf.jasperreports.engine.JRStyle;
39 import net.sf.jasperreports.engine.JRSubreport;
40 import net.sf.jasperreports.engine.design.JasperDesign;
41 import net.sf.jasperreports.engine.xml.JRXmlLoader;
42
43 import com.jaspersoft.jasperserver.api.JSExceptionWrapper;
44 import com.jaspersoft.jasperserver.api.metadata.common.domain.FileResource;
45 import com.jaspersoft.jasperserver.api.metadata.common.domain.Resource;
46 import com.jaspersoft.jasperserver.api.metadata.common.domain.client.FileResourceImpl;
47
48
49
53 public class ResourceCollector
54 {
55 private static final String REPO_URL_PROTOCOL = "repo:";
56
57 private List resources = new ArrayList ();
58 private Set resourceNames = new HashSet ();
59
60
63 private ResourceCollector()
64 {
65 }
66
67
70 public static Resource[] getResources(InputStream jrxmlStream)
71 {
72 JasperDesign jasperDesign = null;
73
74 try
75 {
76 jasperDesign = JRXmlLoader.load(jrxmlStream);
77 }
78 catch (JRException e)
79 {
80 throw new JSExceptionWrapper(e);
81 }
82
83 ResourceCollector collector = new ResourceCollector();
84 collector.collect(jasperDesign);
85
86 return collector.getResources();
87 }
88
89
92 private Resource[] getResources()
93 {
94 return (Resource[]) resources.toArray(new Resource[resources.size()]);
95 }
96
97
100 private void collect(JRReport report)
101 {
102 if (report != null)
103 {
104 JRStyle[] styles = report.getStyles();
105 if (styles != null)
106 {
107 for (int i = 0; i < styles.length; i++)
108 {
109 collect(styles[i]);
110 }
111 }
112
113 collect(report.getBackground());
114 collect(report.getTitle());
115 collect(report.getPageHeader());
116 collect(report.getColumnHeader());
117 collect(report.getDetail());
118 collect(report.getColumnFooter());
119 collect(report.getPageFooter());
120 collect(report.getSummary());
121
122 JRGroup[] groups = report.getGroups();
123 if (groups != null)
124 {
125 for(int i = 0; i < groups.length; i++)
126 {
127 JRGroup group = groups[i];
128 collect(group.getGroupHeader());
129 collect(group.getGroupFooter());
130 }
131 }
132 }
133 }
134
135
138 private void collect(JRStyle style)
139 {
140 collectFont(style.getOwnPdfFontName());
141
142 JRStyle[] conditionalStyles = style.getConditionalStyles();
143 if (conditionalStyles != null)
144 {
145 for (int i = 0; i < conditionalStyles.length; i++)
146 {
147 collect(conditionalStyles[i]);
148 }
149 }
150 }
151
152
155 private void collect(JRBand band)
156 {
157 if (band != null)
158 {
159 JRElement[] elements = band.getElements();
160 if (elements != null)
161 {
162 for(int i = 0; i < elements.length; i++)
163 {
164 JRElement element = elements[i];
165 if (element instanceof JRFont)
166 {
167 JRFont font = (JRFont)element;
168 collectFont(font.getOwnPdfFontName());
169 }
170 else if (element instanceof JRImage)
171 {
172 JRImage image = (JRImage)element;
173 collectFromExpression(image.getExpression(), FileResource.TYPE_IMAGE);
174 }
175 else if (element instanceof JRSubreport)
176 {
177 JRSubreport subreport = (JRSubreport)element;
178 collectFromExpression(subreport.getExpression(), FileResource.TYPE_JRXML);
179 }
180 }
181 }
182 }
183 }
184
185
188 private void collectFont(String pdfFontName)
189 {
190 if (
191 pdfFontName != null
192 && pdfFontName.startsWith(REPO_URL_PROTOCOL)
193 && pdfFontName.indexOf('/') < 0
194 )
195 {
196 String resourceName = pdfFontName.substring(REPO_URL_PROTOCOL.length());
197 if (!resourceNames.contains(resourceName))
198 {
199 FileResource resource = new FileResourceImpl();
200 resource.setName(resourceName);
201 resource.setLabel(resource.getName());
202 resource.setDescription(resource.getName());
203 resource.setFileType(FileResource.TYPE_FONT);
204
205 resources.add(resource);
206 resourceNames.add(resourceName);
207 }
208 }
209 }
210
211
214 private void collectFromExpression(JRExpression expression, String resourceType)
215 {
216 if (
217 expression != null
218 && expression.getChunks() != null
219 && expression.getChunks().length == 1
220 )
221 {
222 JRExpressionChunk chunk = expression.getChunks()[0];
223 if (chunk.getType() == JRExpressionChunk.TYPE_TEXT)
224 {
225 String resourceName = chunk.getText().trim();
226 if (
227 resourceName.startsWith("\"" + REPO_URL_PROTOCOL)
228 && resourceName.indexOf('/') < 0
229 && resourceName.endsWith("\"")
230 )
231 {
232 resourceName = resourceName.substring(REPO_URL_PROTOCOL.length() + 1, resourceName.length() - 1);
233 if (!resourceNames.contains(resourceName))
234 {
235 FileResource resource = new FileResourceImpl();
236 resource.setName(resourceName);
237 resource.setLabel(resource.getName());
238 resource.setDescription(resource.getName());
239 resource.setFileType(resourceType);
240
241 resources.add(resource);
242 resourceNames.add(resourceName);
243 }
244 }
245 }
246 }
247 }
248
249 }
250 |
Popular Tags |
Java API By Example, From Geeks To Geeks.