Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / request / ResourceURIToVariable.java

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/ResourceURIToVariable.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/ResourceURIToVariable.java
new file mode 100644 (file)
index 0000000..f3e3a67
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/ResourceURIToVariable.java
@@ -0,0 +1,53 @@
+package org.simantics.db.layer0.request;\r
+\r
+import org.simantics.databoard.util.URIStringUtils;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.common.request.UnaryRead;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.variable.StandardGraphChildVariable;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.db.request.ReadExt;\r
+import org.simantics.db.request.RequestFlags;\r
+\r
+public class ResourceURIToVariable extends UnaryRead<String, Variable> implements ReadExt {\r
+\r
+       public ResourceURIToVariable(String uri) {\r
+               super(uri);\r
+       }\r
+       \r
+    public static int split(String uri) {\r
+        int pos = uri.lastIndexOf(URIStringUtils.NAMESPACE_PATH_SEPARATOR);\r
+        int pos2 = uri.lastIndexOf(URIStringUtils.NAMESPACE_LOCAL_SEPARATOR);\r
+        return Math.max(pos, pos2);\r
+    }\r
+       \r
+       @Override\r
+       public Variable perform(ReadGraph graph) throws DatabaseException {\r
+               \r
+        if("http://".equals(parameter) || "http:/".equals(parameter)) {\r
+               return new StandardGraphChildVariable(null, null, graph.getRootLibrary());\r
+        } else {\r
+            int childPos = parameter.lastIndexOf(URIStringUtils.NAMESPACE_PATH_SEPARATOR);\r
+            int propertyPos = parameter.lastIndexOf(URIStringUtils.NAMESPACE_LOCAL_SEPARATOR);\r
+            if(childPos > propertyPos)  {\r
+                Variable parent = graph.syncRequest(new ResourceURIToVariable(parameter.substring(0, childPos)));\r
+                return parent.getChild(graph, URIStringUtils.unescape(parameter.substring(childPos + 1, parameter.length())));\r
+            } else {\r
+                Variable parent = graph.syncRequest(new ResourceURIToVariable(parameter.substring(0, propertyPos)));\r
+                return parent.getProperty(graph, URIStringUtils.unescape(parameter.substring(propertyPos + 1, parameter.length())));\r
+            }\r
+        }\r
+        \r
+       }\r
+\r
+       @Override\r
+       public boolean isImmutable(ReadGraph graph) throws DatabaseException {\r
+               return false;\r
+       }\r
+\r
+       @Override\r
+       public int getType() {\r
+               return RequestFlags.IMMEDIATE_UPDATE;\r
+       }\r
+\r
+}\r