BundleResourceOdkForm.java

   1 package org.argeo.app.odk;
   2
   3 import java.io.ByteArrayInputStream;
   4 import java.io.IOException;
   5 import java.io.InputStream;
   6 import java.net.URL;
   7 import java.util.Map;
   8
   9 import org.apache.commons.io.FilenameUtils;
  10 import org.apache.commons.io.IOUtils;
  11 import org.argeo.util.DigestUtils;
  12 import org.osgi.framework.Bundle;
  13 import org.osgi.framework.BundleContext;
  14
  15 /** {@link OdkForm} implementation based on an OSGi {@link Bundle} resource. */
  16 public class BundleResourceOdkForm implements OdkForm {
  17         private String formId;
  18         private String name;
  19         private String version;
  20         private String description;
  21         private String hash;
  22         private String fileName;
  23
  24         private byte[] data;
  25
  26         public void init(Map<String, String> properties, BundleContext bundleContext) throws IOException {
  27                 String location = properties.get("location");
  28                 fileName = FilenameUtils.getName(location);
  29                 URL url = bundleContext.getBundle().getResource(location);
  30                 data = IOUtils.toByteArray(url.openStream());
  31                 hash = "md5:" + DigestUtils.digest(DigestUtils.MD5, data);
  32
  33                 // TODO get it from the XML
  34                 formId = properties.get("formId");
  35                 version = properties.get("version");
  36
  37                 name = properties.get("name");
  38                 description = properties.get("description");
  39         }
  40
  41         @Override
  42         public String getFormId() {
  43                 return formId;
  44         }
  45
  46         @Override
  47         public String getName() {
  48                 return name;
  49         }
  50
  51         @Override
  52         public String getVersion() {
  53                 return version;
  54         }
  55
  56         @Override
  57         public String getDescription() {
  58                 return description;
  59         }
  60
  61         @Override
  62         public String getHash(String hashType) {
  63                 return hash;
  64         }
  65
  66         @Override
  67         public String getFileName() {
  68                 return fileName;
  69         }
  70
  71         @Override
  72         public InputStream openStream() {
  73                 return new ByteArrayInputStream(data);
  74         }
  75
  76         @Override
  77         public int hashCode() {
  78                 assert formId != null;
  79                 assert version != null;
  80                 return formId.hashCode() + version.hashCode();
  81         }
  82
  83         @Override
  84         public boolean equals(Object obj) {
  85                 assert formId != null;
  86                 assert version != null;
  87                 if (!(obj instanceof OdkForm))
  88                         return false;
  89                 OdkForm other = (OdkForm) obj;
  90                 assert other.getFormId() != null;
  91                 assert other.getVersion() != null;
  92
  93                 return other.getFormId().equals(formId) && other.getVersion().equals(version);
  94         }
  95
  96         @Override
  97         public String toString() {
  98                 return "ODK Form " + formId + ", v" + version;
  99         }
 100
 101 }