List of usage examples for org.apache.commons.collections Buffer isEmpty
boolean isEmpty();
From source file:net.gleamynode.oil.impl.wal.store.FileLogWriter.java
public void flush(Buffer logBuf) { Object log;//w w w . ja v a 2 s . co m try { for (;;) { synchronized (logBuf) { if (logBuf.isEmpty()) { break; } log = logBuf.remove(); } out.write(FileLogStoreConstants.LOG_HEADER); writeObject(log); } out.flush(); } catch (IOException e) { throw new OilException("failed to write log.", e); } }
From source file:org.opencms.gwt.CmsCoreService.java
/** * @see org.opencms.gwt.shared.rpc.I_CmsCoreService#getBroadcast() *//*from w ww . ja v a 2s .c om*/ public List<CmsBroadcastMessage> getBroadcast() { OpenCms.getWorkplaceManager().checkWorkplaceRequest(getRequest(), getCmsObject()); CmsSessionInfo sessionInfo = OpenCms.getSessionManager().getSessionInfo(getRequest().getSession()); if (sessionInfo == null) { return null; } String sessionId = sessionInfo.getSessionId().toString(); Buffer messageQueue = OpenCms.getSessionManager().getBroadcastQueue(sessionId); if (!messageQueue.isEmpty()) { CmsMessages messages = org.opencms.workplace.Messages.get() .getBundle(OpenCms.getWorkplaceManager().getWorkplaceLocale(getCmsObject())); List<CmsBroadcastMessage> result = new ArrayList<CmsBroadcastMessage>(); // the user has pending messages, display them all while (!messageQueue.isEmpty()) { CmsBroadcast broadcastMessage = (CmsBroadcast) messageQueue.remove(); CmsBroadcastMessage message = new CmsBroadcastMessage( broadcastMessage.getUser() != null ? broadcastMessage.getUser().getName() : messages.key(org.opencms.workplace.Messages.GUI_LABEL_BROADCAST_FROM_SYSTEM_0), messages.getDateTime(broadcastMessage.getSendTime()), broadcastMessage.getMessage()); result.add(message); } return result; } // no message pending, return null return null; }
From source file:org.opencms.ui.apps.CmsAppWorkplaceUi.java
/** * Checks for new broadcasts.<p>/* w ww . j a v a 2s. co m*/ */ public void checkBroadcasts() { CmsSessionInfo info = OpenCms.getSessionManager().getSessionInfo(getHttpSession()); Buffer queue = info.getBroadcastQueue(); if (!queue.isEmpty()) { StringBuffer broadcasts = new StringBuffer(); while (!queue.isEmpty()) { CmsBroadcast broadcastMessage = (CmsBroadcast) queue.remove(); String from = broadcastMessage.getUser() != null ? broadcastMessage.getUser().getName() : CmsVaadinUtils .getMessageText(org.opencms.workplace.Messages.GUI_LABEL_BROADCAST_FROM_SYSTEM_0); String date = CmsVaadinUtils.getWpMessagesForCurrentLocale() .getDateTime(broadcastMessage.getSendTime()); String content = broadcastMessage.getMessage(); content = content.replaceAll("\\n", "<br />"); broadcasts.append("<p><em>").append(date).append("</em><br />"); broadcasts .append(CmsVaadinUtils .getMessageText(org.opencms.workplace.Messages.GUI_LABEL_BROADCASTMESSAGEFROM_0)) .append(" <b>").append(from).append("</b>:</p><p>"); broadcasts.append(content).append("<br /></p>"); } Notification notification = new Notification( CmsVaadinUtils.getMessageText(Messages.GUI_BROADCAST_TITLE_0), broadcasts.toString(), Type.WARNING_MESSAGE, true); notification.setDelayMsec(-1); notification.show(getPage()); } }
From source file:org.opencms.workplace.CmsWorkplace.java
/** * Returns the message String for the broadcast message alert of the workplace.<p> * /* www.j ava 2 s . co m*/ * Caution: returns the pure message String (not escaped) or null, if no message is pending.<p> * * @return the message String for the broadcast message alert of the workplace */ public String getBroadcastMessageString() { CmsSessionInfo sessionInfo = OpenCms.getSessionManager().getSessionInfo(getSession()); if (sessionInfo == null) { return null; } String sessionId = sessionInfo.getSessionId().toString(); Buffer messageQueue = OpenCms.getSessionManager().getBroadcastQueue(sessionId); if (!messageQueue.isEmpty()) { // create message String StringBuffer result = new StringBuffer(512); // the user has pending messages, display them all while (!messageQueue.isEmpty()) { CmsBroadcast message = (CmsBroadcast) messageQueue.remove(); result.append('['); result.append(getMessages().getDateTime(message.getSendTime())); result.append("] "); result.append(key(Messages.GUI_LABEL_BROADCASTMESSAGEFROM_0)); result.append(' '); if (message.getUser() != null) { result.append(message.getUser().getName()); } else { // system message result.append(key(Messages.GUI_LABEL_BROADCAST_FROM_SYSTEM_0)); } result.append(":\n"); result.append(message.getMessage()); result.append("\n\n"); } return result.toString(); } // no message pending, return null return null; }
From source file:scratch.scott.BrandesBetweennessCentrality.java
protected void computeBetweenness(Graph graph) { BetweennessDataDecorator decorator = new BetweennessDataDecorator(); NumericDecorator bcDecorator = new NumericDecorator(CENTRALITY, UserData.SHARED); Set vertices = graph.getVertices(); for (Iterator vIt = vertices.iterator(); vIt.hasNext();) { Vertex s = (Vertex) vIt.next();/*from w w w. j ava 2 s . co m*/ initializeData(graph, decorator); decorator.data(s).numSPs = 1; decorator.data(s).distance = 0; Stack stack = new Stack(); Buffer queue = new UnboundedFifoBuffer(); queue.add(s); while (!queue.isEmpty()) { Vertex v = (Vertex) queue.remove(); stack.push(v); for (Iterator nIt = v.getNeighbors().iterator(); nIt.hasNext();) { Vertex w = (Vertex) nIt.next(); if (decorator.data(w).distance < 0) { queue.add(w); decorator.data(w).distance = decorator.data(v).distance + 1; } if (decorator.data(w).distance == decorator.data(v).distance + 1) { decorator.data(w).numSPs += decorator.data(v).numSPs; decorator.data(w).predecessors.add(v); } } } while (!stack.isEmpty()) { Vertex w = (Vertex) stack.pop(); for (Iterator v2It = decorator.data(w).predecessors.iterator(); v2It.hasNext();) { Vertex v = (Vertex) v2It.next(); double partialDependency = (decorator.data(v).numSPs / decorator.data(w).numSPs); partialDependency *= (1.0 + decorator.data(w).dependency); decorator.data(v).dependency += partialDependency; Edge currentEdge = v.findEdge(w); MutableDouble edgeValue = (MutableDouble) bcDecorator.getValue(currentEdge); edgeValue.add(partialDependency); } if (w != s) { MutableDouble bcValue = (MutableDouble) bcDecorator.getValue(w); bcValue.add(decorator.data(w).dependency); } } } if (PredicateUtils.enforcesEdgeConstraint(graph, Graph.UNDIRECTED_EDGE)) { for (Iterator v3It = vertices.iterator(); v3It.hasNext();) { MutableDouble bcValue = (MutableDouble) bcDecorator.getValue((Vertex) v3It.next()); bcValue.setDoubleValue(bcValue.doubleValue() / 2.0); } for (Iterator eIt = graph.getEdges().iterator(); eIt.hasNext();) { MutableDouble bcValue = (MutableDouble) bcDecorator.getValue((Edge) eIt.next()); bcValue.setDoubleValue(bcValue.doubleValue() / 2.0); } } for (Iterator vIt = vertices.iterator(); vIt.hasNext();) { Vertex vertex = (Vertex) vIt.next(); decorator.removeValue(vertex); } }