--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2013 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.graphfile.hack;\r
+\r
+import java.io.File;\r
+import java.io.FileFilter;\r
+import java.io.FilenameFilter;\r
+import java.io.IOException;\r
+import java.net.MalformedURLException;\r
+import java.net.URI;\r
+import java.net.URL;\r
+\r
+import org.eclipse.core.runtime.IStatus;\r
+import org.eclipse.core.runtime.Status;\r
+import org.simantics.Simantics;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.request.WriteRequest;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.request.Read;\r
+import org.simantics.graphfile.Activator;\r
+import org.simantics.graphfile.ontology.GraphFileResource;\r
+import org.simantics.layer0.Layer0;\r
+\r
+/**\r
+ * This is a wrapper for Graph based files. \r
+ * \r
+ * DO NOT USE this with File(Input/Output)Stream. \r
+ * \r
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
+ *\r
+ */\r
+public class GraphJavaFile extends File {\r
+ \r
+ private static final long serialVersionUID = 8213749101292672725L;\r
+ private Session session;\r
+ private Resource fileResource;\r
+ \r
+ public GraphJavaFile(Resource fileResource) {\r
+ super("");\r
+ this.fileResource = fileResource;\r
+ this.session = Simantics.getSession();\r
+ }\r
+ \r
+ private byte[] getResourceData(ReadGraph graph) throws DatabaseException {\r
+ GraphFileResource gf = GraphFileResource.getInstance(graph);\r
+ return graph.getRelatedValue(fileResource, gf.HasFiledata);\r
+ }\r
+ \r
+ private byte[] getResourceData() throws DatabaseException {\r
+ return Simantics.getSession().syncRequest(new Read<byte[]>() {\r
+ @Override\r
+ public byte[] perform(ReadGraph graph) throws DatabaseException {\r
+ return getResourceData(graph);\r
+ }\r
+ });\r
+ }\r
+ \r
+ @Override\r
+ public boolean canExecute() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean canRead() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean canWrite() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean createNewFile() throws IOException {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean delete() {\r
+ try {\r
+ session.syncRequest(new WriteRequest() {\r
+ \r
+ @Override\r
+ public void perform(WriteGraph graph) throws DatabaseException {\r
+ graph.deny(fileResource);\r
+ }\r
+ });\r
+ return true;\r
+ } catch (DatabaseException e) {\r
+ Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Failed to delete file resource " + fileResource, e));\r
+ return false;\r
+ }\r
+ }\r
+ \r
+ @Override\r
+ public void deleteOnExit() {\r
+ \r
+ }\r
+ \r
+ @Override\r
+ public boolean equals(Object obj) {\r
+ if (obj == null)\r
+ return false;\r
+ if (!obj.getClass().equals(getClass()))\r
+ return false;\r
+ GraphJavaFile other = (GraphJavaFile)obj;\r
+ return fileResource.equals(other.fileResource);\r
+ }\r
+ \r
+ @Override\r
+ public File getAbsoluteFile() {\r
+ return this;\r
+ }\r
+ \r
+ @Override\r
+ public boolean exists() {\r
+ try {\r
+ return session.syncRequest(new Read<Boolean>() {\r
+ @Override\r
+ public Boolean perform(ReadGraph graph) throws DatabaseException {\r
+ GraphFileResource gf = GraphFileResource.getInstance(graph);\r
+ return graph.getPossibleRelatedValue(fileResource, gf.HasFiledata) != null;\r
+ }\r
+ });\r
+ } catch (DatabaseException e) {\r
+ Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, "exists check failed for file resource " + fileResource, e));\r
+ return false;\r
+ }\r
+ }\r
+ \r
+ @Override\r
+ public String getAbsolutePath() {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public File getCanonicalFile() throws IOException {\r
+ return this;\r
+ }\r
+ \r
+ @Override\r
+ public String getCanonicalPath() throws IOException {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public long getFreeSpace() {\r
+ return 0;\r
+ }\r
+ \r
+ @Override\r
+ public String getName() {\r
+ try {\r
+ return Simantics.getSession().syncRequest(new Read<String>() {\r
+ @Override\r
+ public String perform(ReadGraph graph) throws DatabaseException {\r
+ Layer0 l0 = Layer0.getInstance(graph);\r
+ return graph.getRelatedValue(fileResource, l0.HasName);\r
+ }\r
+ });\r
+ } catch (DatabaseException e) {\r
+ Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, "getName failed for file resource " + fileResource, e));\r
+ return e.getMessage();\r
+ }\r
+ }\r
+ \r
+ @Override\r
+ public String getParent() {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public File getParentFile() {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public String getPath() {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public long getTotalSpace() {\r
+ return 0;\r
+ }\r
+ \r
+ @Override\r
+ public long getUsableSpace() {\r
+ return 0;\r
+ }\r
+ \r
+ @Override\r
+ public boolean isAbsolute() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean isDirectory() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean isFile() {\r
+ return true;\r
+ }\r
+ \r
+ @Override\r
+ public int hashCode() {\r
+ return fileResource.hashCode();\r
+ }\r
+ \r
+ @Override\r
+ public boolean isHidden() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public long lastModified() {\r
+ try {\r
+ return Simantics.getSession().syncRequest(new Read<Long>() {\r
+ @Override\r
+ public Long perform(ReadGraph graph) throws DatabaseException {\r
+ GraphFileResource gf = GraphFileResource.getInstance(graph);\r
+ return graph.getRelatedValue(fileResource, gf.LastModified);\r
+ }\r
+ });\r
+ } catch (DatabaseException e) {\r
+ return 0;\r
+ }\r
+ }\r
+ \r
+ @Override\r
+ public long length() {\r
+ try {\r
+ return getResourceData().length;\r
+ } catch (DatabaseException e) {\r
+ return 0;\r
+ }\r
+ }\r
+ \r
+ @Override\r
+ public boolean mkdir() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean mkdirs() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean renameTo(File dest) {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean setReadable(boolean readable) {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean setReadable(boolean readable, boolean ownerOnly) {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean setWritable(boolean writable) {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean setWritable(boolean writable, boolean ownerOnly) {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean setExecutable(boolean executable) {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean setExecutable(boolean executable, boolean ownerOnly) {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public boolean setLastModified(long time) {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public String[] list() {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public String[] list(FilenameFilter filter) {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public File[] listFiles() {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public File[] listFiles(FileFilter filter) {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public File[] listFiles(FilenameFilter filter) {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public boolean setReadOnly() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public String toString() {\r
+ return getName();\r
+ }\r
+ \r
+ @Override\r
+ public URL toURL() throws MalformedURLException {\r
+ return null;\r
+ }\r
+ \r
+ @Override\r
+ public URI toURI() {\r
+ return null;\r
+ }\r
+ \r
+ \r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff