server/runtime/org.argeo.server.jackrabbit/src/main/java/org/argeo/jcr/JcrUtils.java

   1 package org.argeo.jcr;
   2
   3 import java.util.Calendar;
   4 import java.util.StringTokenizer;
   5
   6 import javax.jcr.Node;
   7 import javax.jcr.NodeIterator;
   8 import javax.jcr.Property;
   9 import javax.jcr.PropertyIterator;
  10 import javax.jcr.RepositoryException;
  11 import javax.jcr.Session;
  12 import javax.jcr.Value;
  13 import javax.jcr.query.Query;
  14 import javax.jcr.query.QueryResult;
  15
  16 import org.apache.commons.logging.Log;
  17 import org.apache.commons.logging.LogFactory;
  18 import org.argeo.ArgeoException;
  19
  20 public class JcrUtils {
  21         private final static Log log = LogFactory.getLog(JcrUtils.class);
  22
  23         public static Node querySingleNode(Query query) {
  24                 NodeIterator nodeIterator;
  25                 try {
  26                         QueryResult queryResult = query.execute();
  27                         nodeIterator = queryResult.getNodes();
  28                 } catch (RepositoryException e) {
  29                         throw new ArgeoException("Cannot execute query " + query, e);
  30                 }
  31                 Node node;
  32                 if (nodeIterator.hasNext())
  33                         node = nodeIterator.nextNode();
  34                 else
  35                         return null;
  36
  37                 if (nodeIterator.hasNext())
  38                         throw new ArgeoException("Query returned more than one node.");
  39                 return node;
  40         }
  41
  42         public static String parentPath(String path) {
  43                 if (path.equals("/"))
  44                         throw new ArgeoException("Root path '/' has no parent path");
  45                 if (path.charAt(0) != '/')
  46                         throw new ArgeoException("Path " + path + " must start with a '/'");
  47                 String pathT = path;
  48                 if (pathT.charAt(pathT.length() - 1) == '/')
  49                         pathT = pathT.substring(0, pathT.length() - 2);
  50
  51                 int index = pathT.lastIndexOf('/');
  52                 return pathT.substring(0, index);
  53         }
  54
  55         public static String dateAsPath(Calendar cal) {
  56                 StringBuffer buf = new StringBuffer(11);
  57                 buf.append(cal.get(Calendar.YEAR));// 4
  58                 buf.append('/');// 1
  59                 int month = cal.get(Calendar.MONTH) + 1;
  60                 if (month < 10)
  61                         buf.append(0);
  62                 buf.append(month);// 2
  63                 buf.append('/');// 1
  64                 int day = cal.get(Calendar.DAY_OF_MONTH);
  65                 if (day < 10)
  66                         buf.append(0);
  67                 buf.append(day);// 2
  68                 buf.append('/');// 1
  69                 return buf.toString();
  70
  71         }
  72
  73         public static String lastPathElement(String path) {
  74                 if (path.charAt(path.length() - 1) == '/')
  75                         throw new ArgeoException("Path " + path + " cannot end with '/'");
  76                 int index = path.lastIndexOf('/');
  77                 if (index < 0)
  78                         throw new ArgeoException("Cannot find last path element for "
  79                                         + path);
  80                 return path.substring(index + 1);
  81         }
  82
  83         public static Node mkdirs(Session session, String path) {
  84                 return mkdirs(session, path, null, false);
  85         }
  86
  87         public static Node mkdirs(Session session, String path, String type,
  88                         Boolean versioning) {
  89                 try {
  90                         if (path.equals('/'))
  91                                 return session.getRootNode();
  92
  93                         StringTokenizer st = new StringTokenizer(path, "/");
  94                         StringBuffer current = new StringBuffer("/");
  95                         Node currentNode = session.getRootNode();
  96                         while (st.hasMoreTokens()) {
  97                                 String part = st.nextToken();
  98                                 current.append(part).append('/');
  99                                 if (!session.itemExists(current.toString())) {
 100                                         if (type != null)
 101                                                 currentNode = currentNode.addNode(part, type);
 102                                         else
 103                                                 currentNode = currentNode.addNode(part);
 104                                         if (versioning)
 105                                                 currentNode.addMixin(ArgeoJcrConstants.MIX_VERSIONABLE);
 106                                         if (log.isTraceEnabled())
 107                                                 log.debug("Added folder " + part + " as " + current);
 108                                 } else {
 109                                         currentNode = (Node) session.getItem(current.toString());
 110                                 }
 111                         }
 112                         session.save();
 113                         return currentNode;
 114                 } catch (RepositoryException e) {
 115                         throw new ArgeoException("Cannot mkdirs " + path, e);
 116                 }
 117         }
 118
 119         /** Recursively outputs the contents of the given node. */
 120         public static void debug(Node node) throws RepositoryException {
 121                 // First output the node path
 122                 log.debug(node.getPath());
 123                 // Skip the virtual (and large!) jcr:system subtree
 124                 if (node.getName().equals(ArgeoJcrConstants.JCR_SYSTEM)) {
 125                         return;
 126                 }
 127
 128                 // Then the children nodes (recursive)
 129                 NodeIterator it = node.getNodes();
 130                 while (it.hasNext()) {
 131                         Node childNode = it.nextNode();
 132                         debug(childNode);
 133                 }
 134
 135                 // Then output the properties
 136                 PropertyIterator properties = node.getProperties();
 137                 while (properties.hasNext()) {
 138                         Property property = properties.nextProperty();
 139                         if (property.getDefinition().isMultiple()) {
 140                                 // A multi-valued property, print all values
 141                                 Value[] values = property.getValues();
 142                                 for (int i = 0; i < values.length; i++) {
 143                                         log.debug(property.getPath() + "=" + values[i].getString());
 144                                 }
 145                         } else {
 146                                 // A single-valued property
 147                                 log.debug(property.getPath() + "=" + property.getString());
 148                         }
 149                 }
 150
 151         }
 152 }