--- /dev/null
+package org.argeo.jcr.ui.explorer.utils;
+
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import javax.jcr.Node;
+import javax.jcr.Property;
+import javax.jcr.Repository;
+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;
+import org.argeo.jcr.RepositoryRegister;
+import org.argeo.jcr.ui.explorer.browser.RepositoryNode;
+
+/**
+ * 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;
+
+ /**
+ * 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 = null;
+
+ 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];
+ result = curNode.getSession().getNodeByIdentifier(fileId);
+ 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);
+ }
+ }
+}
projects / lgpl / argeo-commons.git / blobdiff