X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=eclipse%2Fruntime%2Forg.argeo.eclipse.ui.jcr%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Feclipse%2Fui%2Fjcr%2Futils%2FJcrFileProvider.java;fp=eclipse%2Fruntime%2Forg.argeo.eclipse.ui.jcr%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Feclipse%2Fui%2Fjcr%2Futils%2FJcrFileProvider.java;h=a9ee6402ebf3ad37589e824a69bb99dcc3a9a6a3;hb=ae696952b94054d3b9ec8ab05c02fc82d11607bf;hp=0000000000000000000000000000000000000000;hpb=22365726e2fdcb12e76c3d78060960ae7161628e;p=lgpl%2Fargeo-commons.git

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
new file mode 100644
index 000000000..a9ee6402e
--- /dev/null
+++ b/eclipse/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/utils/JcrFileProvider.java
@@ -0,0 +1,157 @@
+package org.argeo.eclipse.ui.jcr.utils;
+
+import java.io.InputStream;
+
+import javax.jcr.Node;
+import javax.jcr.Property;
+import javax.jcr.RepositoryException;
+import javax.jcr.nodetype.NodeType;
+
+import org.apache.commons.io.IOUtils;
+import org.argeo.ArgeoException;
+import org.argeo.eclipse.ui.specific.FileProvider;
+
+/**
+ * Implements a FileProvider for UI purposes. Note that it might not be very
+ * reliable as long as we have not fixed login & multi repository issues that
+ * will be addressed in the next version.
+ * 
+ * NOTE: id used here is the real id of the JCR Node, not the JCR Path
+ * 
+ * Relies on common approach for JCR file handling implementation.
+ * 
+ */
+
+public class JcrFileProvider implements FileProvider {
+
+	// private Object[] rootNodes;
+	private Node refNode;
+
+	/**
+	 * Must be set in order for the provider to be able to get current session
+	 * and thus have the ability to get the file node corresponding to a given
+	 * file ID
+	 * 
+	 * FIXME : this introduces some concurrences ISSUES.
+	 * 
+	 * @param repositoryNode
+	 */
+	public void setReferenceNode(Node refNode) {
+		this.refNode = refNode;
+	}
+
+	/**
+	 * Must be set in order for the provider to be able to search the repository
+	 * Provided object might be either JCR Nodes or UI RepositoryNode for the
+	 * time being.
+	 * 
+	 * @param repositoryNode
+	 */
+	// public void setRootNodes(Object[] rootNodes) {
+	// List<Object> tmpNodes = new ArrayList<Object>();
+	// for (int i = 0; i < rootNodes.length; i++) {
+	// Object obj = rootNodes[i];
+	// if (obj instanceof Node) {
+	// tmpNodes.add(obj);
+	// } else if (obj instanceof RepositoryRegister) {
+	// RepositoryRegister repositoryRegister = (RepositoryRegister) obj;
+	// Map<String, Repository> repositories = repositoryRegister
+	// .getRepositories();
+	// for (String name : repositories.keySet()) {
+	// // tmpNodes.add(new RepositoryNode(name, repositories
+	// // .get(name)));
+	// }
+	//
+	// }
+	// }
+	// this.rootNodes = tmpNodes.toArray();
+	// }
+
+	public byte[] getByteArrayFileFromId(String fileId) {
+		InputStream fis = null;
+		byte[] ba = null;
+		Node child = getFileNodeFromId(fileId);
+		try {
+			fis = (InputStream) child.getProperty(Property.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(Property.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) {
+		try {
+			Node result = refNode.getSession().getNodeByIdentifier(fileId);
+
+			// rootNodes: for (int j = 0; j < rootNodes.length; j++) {
+			// // in case we have a classic JCR Node
+			// if (rootNodes[j] instanceof Node) {
+			// Node curNode = (Node) rootNodes[j];
+			// if (result != null)
+			// break rootNodes;
+			// } // Case of a repository Node
+			// else if (rootNodes[j] instanceof RepositoryNode) {
+			// Object[] nodes = ((RepositoryNode) rootNodes[j])
+			// .getChildren();
+			// for (int i = 0; i < nodes.length; i++) {
+			// Node node = (Node) nodes[i];
+			// result = node.getSession().getNodeByIdentifier(fileId);
+			// if (result != null)
+			// break rootNodes;
+			// }
+			// }
+			// }
+
+			// Sanity checks
+			if (result == null)
+				throw new ArgeoException("File node not found for ID" + fileId);
+
+			// Ensure that the node have the correct type.
+			if (!result.isNodeType(NodeType.NT_FILE))
+				throw new ArgeoException(
+						"Cannot open file children Node that are not of '"
+								+ NodeType.NT_RESOURCE + "' type.");
+
+			// Get the usefull part of the Node
+			Node child = result.getNodes().nextNode();
+			if (child == null || !child.isNodeType(NodeType.NT_RESOURCE))
+				throw new ArgeoException(
+						"ERROR: IN the current implemented model, '"
+								+ NodeType.NT_FILE
+								+ "' file node must have one and only one child of the nt:ressource, where actual data is stored");
+			return child;
+
+		} catch (RepositoryException re) {
+			throw new ArgeoException("Erreur while getting file node of ID "
+					+ fileId, re);
+		}
+	}
+}