bundles/org.simantics.browsing.ui.model/src/org/simantics/browsing/ui/model/browsecontexts/BrowseContexts.java

   1 package org.simantics.browsing.ui.model.browsecontexts;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 import java.util.Arrays;\r
   5 import java.util.Collection;\r
   6 import java.util.List;\r
   7 \r
   8 import org.simantics.browsing.ui.BuiltinKeys;\r
   9 import org.simantics.browsing.ui.NodeContext;\r
  10 import org.simantics.browsing.ui.common.NodeContextBuilder;\r
  11 import org.simantics.browsing.ui.model.actions.ActionBrowseContext;\r
  12 import org.simantics.db.ReadGraph;\r
  13 import org.simantics.db.RequestProcessor;\r
  14 import org.simantics.db.Resource;\r
  15 import org.simantics.db.common.procedure.adapter.TransientCacheListener;\r
  16 import org.simantics.db.common.request.UnaryRead;\r
  17 import org.simantics.db.exception.DatabaseException;\r
  18 \r
  19 /**\r
  20  * Local utilities for BrowseContext/ActionBrowseContext internal use.\r
  21  * \r
  22  * @author Tuukka Lehtonen\r
  23  */\r
  24 public final class BrowseContexts {\r
  25 \r
  26         public static String[] toSortedURIs(ReadGraph graph, Collection<Resource> rs) throws DatabaseException {\r
  27                 String[] result = new String[rs.size()];\r
  28                 int i = 0;\r
  29                 for (Resource r : rs) {\r
  30                         String uri = graph.getPossibleURI(r);\r
  31                         if (uri != null)\r
  32                                 result[i++] = uri;\r
  33                 }\r
  34                 if (i > 1)\r
  35                         Arrays.sort(result, 0, i);\r
  36                 return i < result.length ? Arrays.copyOf(result, i) : result;\r
  37         }\r
  38 \r
  39         /**\r
  40          * Wrapper for SCL usage because SCL does not know effect <code>RequestProcessor</code>\r
  41          * \r
  42          * @param graph\r
  43          * @param uris\r
  44          * @return\r
  45          * @throws DatabaseException\r
  46          */\r
  47         public static BrowseContext toBrowseContextG(ReadGraph graph, String[] uris) throws DatabaseException {\r
  48             return toBrowseContext(graph, uris);\r
  49         }\r
  50         \r
  51         public static BrowseContext toBrowseContext(RequestProcessor processor, String[] uris) throws DatabaseException {\r
  52                 return processor.syncRequest(new URIsToBrowseContext(Arrays.asList(uris)), TransientCacheListener.<BrowseContext>instance());\r
  53         }\r
  54 \r
  55            /**\r
  56      * Wrapper for SCL usage because SCL does not know effect <code>RequestProcessor</code>\r
  57      * \r
  58      * @param graph\r
  59      * @param uris\r
  60      * @return\r
  61      * @throws DatabaseException\r
  62      */\r
  63         public static ActionBrowseContext toActionBrowseContextG(ReadGraph graph, String[] uris) throws DatabaseException {\r
  64             return toActionBrowseContext(graph, uris);\r
  65         }\r
  66         \r
  67         public static ActionBrowseContext toActionBrowseContext(RequestProcessor processor, String[] uris) throws DatabaseException {\r
  68                 return processor.syncRequest(new URIsToActionBrowseContext(Arrays.asList(uris)), TransientCacheListener.<ActionBrowseContext>instance());\r
  69         }\r
  70         \r
  71         public static NodeContext getNodeContextForResource(Resource resource) {\r
  72             return NodeContextBuilder.buildWithData(BuiltinKeys.INPUT, resource);\r
  73         }\r
  74 \r
  75         public static class URIsToBrowseContext extends UnaryRead<List<String>, BrowseContext> {\r
  76 \r
  77                 public URIsToBrowseContext(List<String> parameter) {\r
  78                         super(parameter);\r
  79                 }\r
  80 \r
  81                 @Override\r
  82                 public BrowseContext perform(ReadGraph graph) throws DatabaseException {\r
  83                         Collection<Resource> resources = graph.syncRequest( new URIsToResources(parameter) );\r
  84                         return resources.isEmpty() ? null : graph.syncRequest( new BrowseContextRequest(resources) );\r
  85                 }\r
  86 \r
  87         }\r
  88 \r
  89         public static class URIsToActionBrowseContext extends UnaryRead<List<String>, ActionBrowseContext> {\r
  90 \r
  91                 public URIsToActionBrowseContext(List<String> parameter) {\r
  92                         super(parameter);\r
  93                 }\r
  94 \r
  95                 @Override\r
  96                 public ActionBrowseContext perform(ReadGraph graph) throws DatabaseException {\r
  97                         Collection<Resource> resources = graph.syncRequest( new URIsToResources(parameter) );\r
  98                         return resources.isEmpty() ? null : graph.syncRequest( new ActionBrowseContextRequest(resources) );\r
  99                 }\r
 100 \r
 101         }\r
 102 \r
 103         public static class URIsToResources extends UnaryRead<List<String>, Collection<Resource>> {\r
 104 \r
 105                 public URIsToResources(List<String> parameter) {\r
 106                         super(parameter);\r
 107                 }\r
 108 \r
 109                 @Override\r
 110                 public Collection<Resource> perform(ReadGraph graph) throws DatabaseException {\r
 111                         Collection<Resource> result = new ArrayList<Resource>(parameter.size());\r
 112                         for (String uri : parameter) {\r
 113                                 Resource r = graph.getPossibleResource(uri);\r
 114                                 if (r != null)\r
 115                                         result.add(r);\r
 116                         }\r
 117                         return result;\r
 118                 }\r
 119 \r
 120         }\r
 121 \r
 122         public static class ResourcesToURIs extends UnaryRead<Collection<Resource>, List<String>> {\r
 123 \r
 124                 public ResourcesToURIs(Collection<Resource> parameter) {\r
 125                         super(parameter);\r
 126                 }\r
 127 \r
 128                 @Override\r
 129                 public List<String> perform(ReadGraph graph) throws DatabaseException {\r
 130                         List<String> result = new ArrayList<String>(parameter.size());\r
 131                         for (Resource r : parameter) {\r
 132                                 String uri = graph.getPossibleURI(r);\r
 133                                 if (uri != null)\r
 134                                         result.add(uri);\r
 135                         }\r
 136                         return result;\r
 137                 }\r
 138 \r
 139         }\r
 140 \r
 141 }\r