本文整理了Java中org.openide.filesystems.FileUtil.createMemoryFileSystem()方法的一些代码示例，展示了FileUtil.createMemoryFileSystem()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。FileUtil.createMemoryFileSystem()方法的具体详情如下：
包路径：org.openide.filesystems.FileUtil
类名称：FileUtil
方法名：createMemoryFileSystem

FileUtil.createMemoryFileSystem介绍

[英]Factory method that creates an empty implementation of a filesystem that completely resides in a memory.

To specify the MIME type of a data file without using a MIME resolver, set the mimeType file attribute.

Since 7.42, a URLMapper is available for files (and folders) in memory filesystems. These URLs are valid only so long as the filesystem has not been garbage-collected, so hold the filesystem (or a file in it) strongly for as long as you expect the URLs to be in play.
[中]工厂方法，该方法创建完全驻留在内存中的文件系统的空实现。
要在不使用MIME解析器的情况下指定数据文件的MIME类型，请设置mimeType文件属性。
自7.42以来，URLMapper可用于内存文件系统中的文件（和文件夹）。这些URL只有在文件系统未被垃圾收集的情况下才有效，因此，只要您希望URL发挥作用，就一直保持文件系统（或其中的一个文件）。

代码示例

代码示例来源：origin: org.netbeans.api/org-openide-filesystems

try {
  InputStream is = fo.openInputStream();
  org.openide.filesystems.FileObject tmp = FileUtil.createMemoryFileSystem().getRoot().createData("resolver.xml");
  OutputStream os = tmp.getOutputStream();
  for (;;) {

代码示例来源：origin: net.sf.squirrel-sql.thirdparty-non-maven/openide

/** 
 * @param rep may be null
 */
private static synchronized void setRepository (Repository rep) {
  repository = rep;
  
  if (repository == null) {
    // if not provided use default one
    repository = new Repository (FileUtil.createMemoryFileSystem ());
  }        
}

代码示例来源：origin: net.sf.squirrel-sql.thirdpary-non-maven/openide

/** 
 * @param rep may be null
 */
private static synchronized void setRepository (Repository rep) {
  repository = rep;
  
  if (repository == null) {
    // if not provided use default one
    repository = new Repository (FileUtil.createMemoryFileSystem ());
  }        
}

代码示例来源：origin: org.netbeans.modules/org-netbeans-modules-junit-ant

public @Override FileObject getProjectDirectory() {
  return FileUtil.createMemoryFileSystem().getRoot();
}
public @Override Lookup getLookup() {

代码示例来源：origin: org.netbeans.modules/org-netbeans-modules-cnd-debugger-common2

private static FileObject createFileObject() {
    try {
      return FileUtil.createMemoryFileSystem().getRoot().createData("disasm", "s"); // NOI18N
    } catch (IOException ioe) {
      Exceptions.printStackTrace(ioe);
    }
    return null;
  }
}

代码示例来源：origin: org.netbeans.modules/org-netbeans-modules-apisupport-wizards

/** Don't call me from EDT! */
private FileSystem getSFS() {
  assert !EventQueue.isDispatchThread() : "Called from ETD!"; // NOI18N
  if (sfs == null) {
    try {
      // XXX takes very long time. Consider to call it when e.g. module is loaded
      sfs = data.getProject().getLookup().lookup(NbModuleProvider.class).getEffectiveSystemFilesystem();
    } catch (IOException ex) {
      Logger.getLogger(GUIRegistrationPanel.class.getName()).log(Level.INFO, null, ex);
      sfs = FileUtil.createMemoryFileSystem();
    }
  }
  return sfs;
}

代码示例来源：origin: org.netbeans.modules/org-netbeans-modules-cnd-navigation

/**
 * Creates file in memory.
 *
 * @param name - file name
 * @return file
 */
public static FileObject createMemoryFile(String name) {
  FileObject fo = null;
  try {
    FileObject root = FileUtil.createMemoryFileSystem().getRoot();
    fo = FileUtil.createData(root, name);
  } catch (IOException ex) {
    Exceptions.printStackTrace(ex);
  }
  return fo;
}

代码示例来源：origin: org.netbeans.modules/org-netbeans-modules-php-project

private String getMimeType(String filename) {
  try {
    return FileUtil.createMemoryFileSystem().getRoot().createData(filename).getMIMEType();
  } catch (IOException ex) {
    // ignored, should not happen
    LOGGER.log(Level.WARNING, null, ex);
  }
  return "content/unknown"; // NOI18N
}

代码示例来源：origin: it.tidalwave.metadata/it-tidalwave-metadata-spi

@Before
  public void setUpFileSystem()
   throws Exception 
   {
//        logger.info("********************** setup()");
    fileSystem = FileUtil.createMemoryFileSystem();
   }

代码示例来源：origin: it.tidalwave.metadata/it-tidalwave-metadata-persistence

@Before
public void setupFixture() 
 throws Exception 
 {
  itemPersistenceSupport = new MetadataItemPersistenceSupport(MockItem1.class, "MockItem Persistence", StorageType.EXTERNAL, "MockItem");
  fileSystem = FileUtil.createMemoryFileSystem();
 }

代码示例来源：origin: org.netbeans.api/org-netbeans-modules-java-source-base

FileObject doCreateFromTemplate(FileObject template, JavaFileObject sourceFile) throws IOException {
  FileObject scratchFolder = FileUtil.createMemoryFileSystem().getRoot();
  String name = FileObjects.getName(sourceFile, false);
  if (template == null) {
    return FileUtil.createData(scratchFolder, name);
  }
  FileObjectFromTemplateCreator creator = Lookup.getDefault().lookup(FileObjectFromTemplateCreator.class);
  if (creator == null) {
    return FileUtil.createData(scratchFolder, name);
  }
  File pack = BaseUtilities.toFile(sourceFile.toUri()).getParentFile();
  while (FileUtil.toFileObject(pack) == null) {
    pack = pack.getParentFile();
  }
  FileObject targetFolder = FileUtil.toFileObject(pack);
  scratchFolder.setAttribute(FileObjectFromTemplateCreator.ATTR_ORIG_FILE, targetFolder);
  return creator.create(template, scratchFolder, name);
}

代码示例来源：origin: org.netbeans.api/org-netbeans-modules-java-source-base

/**
 *
 * @param url of root to be indexed
 * @return result of indexing
 * @throws IOException
 * @throws IllegalArgumentException
 * @deprecated Only used by unit tests, the start method is used by impl dep by tests of several modules, safer to keep it.
 */
@Deprecated
public final Changes analyse(@NonNull final URL url) throws IOException, IllegalArgumentException  {
  return analyse(
    SPIAccessor.getInstance().createContext(
      FileUtil.createMemoryFileSystem().getRoot(),
      url,
      JavaIndex.NAME,
      JavaIndex.VERSION,
      null,
      false,
      false,
      false,
      SuspendSupport.NOP,
      null,
      null));
}

代码示例来源：origin: org.netbeans.api/org-netbeans-modules-java-source-base

@Override
  public void run(CompilationController cc) throws Exception {
    final WorkingCopy copy = new WorkingCopy(cc.impl, overlay);
    copy.setJavaSource(JavaSource.this);
    if (sources.isEmpty()) {
      //runUserActionTask for source-less JavaSources does not require toPhase
      //so automatically initializing also for runModificationTask:
      copy.toPhase(Phase.PARSED);
    }
    task.run(copy);
    final JavacTaskImpl jt = copy.impl.getJavacTask();
    Log.instance(jt.getContext()).nerrors = 0;
    final List<ModificationResult.Difference> diffs = copy.getChanges(result.tag2Span);
    if (diffs != null && diffs.size() > 0) {
      final FileObject file = copy.getFileObject();
      result.diffs.put(file != null ? file : FileUtil.createMemoryFileSystem().getRoot().createData("temp", "java"), diffs);
    }
  }
};

代码示例来源：origin: it.tidalwave.metadata/it-tidalwave-metadata-viewer

@Before
public void setUp() 
 throws IOException 
 {
  viewer = new MetadataViewerTopComponent(); // always create a new one for test isolation
  frame = new JFrame("test");
  frame.getContentPane().add(viewer);
  frame.pack();
  dataObject1 = DataObject.find(FileUtil.createMemoryFileSystem().getRoot().createData("dataobject1"));
  dataObject2 = DataObject.find(FileUtil.createMemoryFileSystem().getRoot().createData("dataobject2"));
  assertNotNull(dataObject1);
  assertNotNull(dataObject2);
  
  // Must reset panelProviders: they are the same instance across al tests, since they are
  // only initialized once by the global Lookup.
  for (final MetadataPanelProvider panelProvider : Lookup.getDefault().lookupAll(MetadataPanelProvider.class))
   {
    panelProvider.setDataObject(null);
    assertNull(panelProvider.getDataObject());
   }
 }

代码示例来源：origin: it.tidalwave.metadata/it-tidalwave-metadata-tiff-provider

@Test
public void testFindMetadataItemFromGoodFile()
 throws Exception
 {
  final DataObject dataObject = DataObject.find(FileUtil.createMemoryFileSystem().getRoot().createData("goodfile"));       
  final MetadataItemHolder<TIFF> holder = tiffProvider.findOrCreateItems(dataObject, EXTERNAL).iterator().next();
  assertNotNull(holder);
  assertTrue(holder.isAvailable());
 }

代码示例来源：origin: it.tidalwave.metadata/it-tidalwave-metadata-tiff-provider

@Test
public void testFindMetadataItemFromBadJPG()
 throws Exception
 {
  final DataObject dataObject = DataObject.find(FileUtil.createMemoryFileSystem().getRoot().createData("badfile"));       
  final MetadataItemHolder<TIFF> holder = tiffProvider.findOrCreateItems(dataObject, EXTERNAL).iterator().next();
  assertNotNull(holder);
  assertFalse(holder.isAvailable());
 }

代码示例来源：origin: it.tidalwave.metadata/it-tidalwave-metadata-tiff-provider

@Test
 public void testLastestModificationTimeIsUpdated()
  throws Exception
  {
   final DataObject dataObject = DataObject.find(FileUtil.createMemoryFileSystem().getRoot().createData("goodfile"));       
   final MetadataItemHolder<TIFF> holder = tiffProvider.findOrCreateItems(dataObject, EXTERNAL).iterator().next();
   assertNotNull(holder);
   final Date timestamp1 = holder.getLatestModificationTime();
   assertTrue(holder.isAvailable());
   
   Thread.sleep(1000);
   final Date now = new Date();
   holder.get().setArtist("new artist");
   final Date timestamp2 = holder.getLatestModificationTime();
   assertTrue(timestamp2.getTime() - now.getTime() < 50);
   assertNotSame(timestamp1, timestamp2);
  }
}

代码示例来源：origin: org.netbeans.modules/org-netbeans-modules-apisupport-project

} catch (IOException e) {
  Util.err.notify(ErrorManager.INFORMATIONAL, e);
  return fs = FileUtil.createMemoryFileSystem();

代码示例来源：origin: org.netbeans.modules/org-netbeans-modules-apisupport-project

} catch (IOException e) {
  Util.err.notify(ErrorManager.INFORMATIONAL, e);
  return fs = FileUtil.createMemoryFileSystem();

代码示例来源：origin: it.tidalwave.metadata/it-tidalwave-metadata-viewer

@Before
public void setupFixture() 
 throws IOException, NoSuchMetadataTypeException 
 {
  panelProvider = new MetadataPanelProviderMock();
  FileUtil.setMIMEType("test", "image/test");
  final FileSystem fileSystem = FileUtil.createMemoryFileSystem();
  final FileObject root = fileSystem.getRoot();
  
  dataObjectWithNoMetadata = DataObject.find(root.createData("nometadata.test"));
  assertTrue(dataObjectWithNoMetadata instanceof DataObjectMock);
  assertNull(dataObjectWithNoMetadata.getLookup().lookup(Metadata.class));
  dataObjectWithItem = DataObject.find(root.createData("item.test"));
  assertTrue(dataObjectWithItem instanceof DataObjectMock);
  Metadata metadata = dataObjectWithItem.getLookup().lookup(Metadata.class);
  assertNotNull(metadata);
  MetadataItemHolder<MetadataItemMock> holder = metadata.findOrCreateItem(MetadataItemMock.class, INTERNAL);
  assertNotNull(holder);
  assertTrue(holder.isAvailable());
  dataObjectWithNoItem = DataObject.find(root.createData("noitem.test"));
  assertTrue(dataObjectWithNoItem instanceof DataObjectMock);
  metadata = dataObjectWithNoItem.getLookup().lookup(Metadata.class);
  assertNotNull(metadata);
  holder = metadata.findOrCreateItem(MetadataItemMock.class, INTERNAL);
  assertNotNull(holder);
  assertFalse(holder.isAvailable());
 }