+ Implementation of file handlers for both RCP & RAP, finalisation.

[lgpl/argeo-commons.git] / eclipse / runtime / org.argeo.eclipse.ui.jcr / src / main / java / org / argeo / eclipse / ui / jcr / utils / JcrFileProvider.java

diff --git a/eclipse/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/utils/JcrFileProvider.java b/eclipse/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/utils/JcrFileProvider.java
index f8de5f3b54a8ecee9da1900b86d1de0d4d8b1d1c..6cf4d29c58ba058d0b5a6181de67eeab2d8cda33 100644 (file)
--- a/eclipse/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/utils/JcrFileProvider.java
+++ b/eclipse/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/utils/JcrFileProvider.java
@@ -38,48 +38,74 @@ public class JcrFileProvider implements FileProvider {
        }
 
        public byte[] getByteArrayFileFromId(String fileId) {
+               InputStream fis = null;
+               byte[] ba = null;
+               Node child = getFileNodeFromId(fileId);
                try {
-                       Object[] nodes = repositoryNode.getChildren();
+                       fis = (InputStream) child.getProperty("jcr:data").getBinary()
+                                       .getStream();
+                       ba = IOUtils.toByteArray(fis);
+
+               } catch (Exception e) {
+                       throw new ArgeoException("Stream error while opening file", e);
+               } finally {
+                       IOUtils.closeQuietly(fis);
+               }
+               return ba;
+       }
+
+       public InputStream getInputStreamFromFileId(String fileId) {
+               try {
+                       InputStream fis = null;
+
+                       Node child = getFileNodeFromId(fileId);
+                       fis = (InputStream) child.getProperty("jcr:data").getBinary()
+                                       .getStream();
+                       return fis;
+               } catch (RepositoryException re) {
+                       throw new ArgeoException("Cannot get stream from file node for Id "
+                                       + fileId, re);
+               }
+       }
+
+       /**
+        * Throws an exception if the node is not found in the current repository (a
+        * bit like a FileNotFoundException)
+        * 
+        * @param fileId
+        * @return Returns the child node of the nt:file node. It is the child node
+        *         that have the jcr:data property where actual file is stored.
+        *         never null
+        */
+       private Node getFileNodeFromId(String fileId) {
+               Object[] nodes = repositoryNode.getChildren();
+               try {
+                       Node result = null;
 
                        repos: for (int i = 0; i < nodes.length; i++) {
                                WorkspaceNode wNode = (WorkspaceNode) nodes[i];
-                               Node node = null;
-                               node = wNode.getSession().getNodeByIdentifier(fileId);
+                               result = wNode.getSession().getNodeByIdentifier(fileId);
 
-                               if (node == null)
+                               if (result == null)
                                        continue repos;
 
-                               if (!node.isNodeType("nt:file"))
+                               // Ensure that the node have the correct type.
+                               if (!result.isNodeType("nt:file"))
                                        throw new ArgeoException(
                                                        "Cannot open file children Node that are not of 'nt:resource' type.");
 
-                               Node child = node.getNodes().nextNode();
-                               if (!child.isNodeType("nt:resource"))
+                               Node child = result.getNodes().nextNode();
+                               if (child == null || !child.isNodeType("nt:resource"))
                                        throw new ArgeoException(
-                                                       "Cannot open file children Node that are not of 'nt:resource' type.");
+                                                       "ERROR: IN the current implemented model, nt:file file node must have one and only one child of the nt:ressource, where actual data is stored");
 
-                               InputStream fis = null;
-                               byte[] ba = null;
-                               try {
-                                       fis = (InputStream) child.getProperty("jcr:data")
-                                                       .getBinary().getStream();
-                                       ba = IOUtils.toByteArray(fis);
-
-                               } catch (Exception e) {
-                                       throw new ArgeoException("Stream error while opening file",
-                                                       e);
-                               } finally {
-                                       IOUtils.closeQuietly(fis);
-                               }
-                               if (ba != null)
-                                       return ba;
+                               return child;
                        }
-
                } catch (RepositoryException re) {
-                       throw new ArgeoException("RepositoryException while reading file ",
-                                       re);
+                       throw new ArgeoException("Erreur while getting file node of ID "
+                                       + fileId, re);
                }
 
-               throw new ArgeoException("File not found for ID " + fileId);
+               throw new ArgeoException("File node not found for ID" + fileId);
        }
 }