--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.db.impl.query;\r
+\r
+import gnu.trove.map.hash.TObjectIntHashMap;\r
+\r
+import java.util.concurrent.Semaphore;\r
+\r
+import org.simantics.databoard.util.URIStringUtils;\r
+import org.simantics.db.common.exception.DebugException;\r
+import org.simantics.db.impl.graph.ReadGraphImpl;\r
+import org.simantics.db.impl.procedure.InternalProcedure;\r
+import org.simantics.db.procedure.ListenerBase;\r
+\r
+public class URIToResource extends StringQuery<InternalProcedure<Integer>> {\r
+\r
+// public ArrayList<InternalProcedure<Integer>> procs = null;\r
+ \r
+ private URIToResource(final String id) {\r
+ super(id);\r
+ }\r
+ \r
+ final static URIToResource entry(final QueryProcessor provider, final String id) {\r
+ return (URIToResource)provider.uriToResourceMap.get(id);\r
+ }\r
+\r
+ final static void runner(ReadGraphImpl graph, final String id, CacheEntry parent, final ListenerBase listener, final InternalProcedure<Integer> procedure) {\r
+\r
+ QueryProcessor processor = graph.processor;\r
+ \r
+ URIToResource entry = (URIToResource)processor.uriToResourceMap.get(id); \r
+ if(entry == null) {\r
+\r
+ entry = new URIToResource(id);\r
+ entry.setPending();\r
+ entry.clearResult(processor.querySupport);\r
+ entry.putEntry(processor);\r
+\r
+ processor.performForEach(graph, entry, parent, listener, procedure);\r
+ \r
+ } else {\r
+ \r
+ if(entry.isPending()) {\r
+ synchronized(entry) {\r
+ if(entry.isPending()) {\r
+ throw new IllegalStateException();\r
+// if(entry.procs == null) entry.procs = new ArrayList<InternalProcedure<Integer>>();\r
+// entry.procs.add(procedure);\r
+// processor.registerDependencies(graph, entry, parent, listener, procedure, false);\r
+// return;\r
+ }\r
+ }\r
+ }\r
+ \r
+ processor.performForEach(graph, entry, parent, listener, procedure);\r
+ \r
+ }\r
+ \r
+ }\r
+ \r
+ final public static void queryEach(ReadGraphImpl graph, final String id, final CacheEntry parent, final ListenerBase listener, final InternalProcedure<Integer> procedure) {\r
+ \r
+ assert(id != null);\r
+ \r
+ if(graph.parent == null && listener == null) {\r
+ URIToResource.computeForEach(graph, id, null, procedure);\r
+ } else {\r
+ runner(graph, id, parent, listener, procedure);\r
+ }\r
+ \r
+ }\r
+ \r
+ @Override\r
+ public URIToResource getEntry(QueryProcessor provider) {\r
+ return provider.uriToResourceMap.get(id);\r
+ }\r
+ \r
+ @Override\r
+ public void putEntry(QueryProcessor provider) {\r
+ provider.uriToResourceMap.put(id, this);\r
+ }\r
+\r
+ @Override\r
+ final public void removeEntry(QueryProcessor provider) {\r
+ provider.uriToResourceMap.remove(id);\r
+ }\r
+\r
+ private void lookup(ReadGraphImpl graph, final QueryProcessor processor, final InternalProcedure<Integer> procedure, final String namespace, final String name) {\r
+ \r
+ NamespaceIndex.queryEach(graph, namespace, processor, this, null, new InternalProcedure<TObjectIntHashMap<String>>() {\r
+\r
+ @Override\r
+ public void execute(ReadGraphImpl graph, TObjectIntHashMap<String> index) {\r
+\r
+ if(index != null) {\r
+ int result = index.get(name);\r
+ if(result != 0) {\r
+ addOrSet(graph, processor, result);\r
+ procedure.execute(graph, result);\r
+ return;\r
+ }\r
+ }\r
+ \r
+ addOrSet(graph, processor, new Integer(0));\r
+ procedure.execute(graph, new Integer(0));\r
+\r
+ }\r
+\r
+ @Override\r
+ public void exception(ReadGraphImpl graph, Throwable t) {\r
+ except(t);\r
+ procedure.exception(graph, t);\r
+ }\r
+\r
+ });\r
+\r
+ }\r
+\r
+ private static void lookup(ReadGraphImpl graph, final URIToResource entry, final InternalProcedure<Integer> procedure, final String namespace, final String name) {\r
+ \r
+ NamespaceIndex.queryEach(graph, namespace, graph.processor, entry, null, new InternalProcedure<TObjectIntHashMap<String>>() {\r
+\r
+ @Override\r
+ public void execute(ReadGraphImpl graph, TObjectIntHashMap<String> index) {\r
+\r
+ if(index != null) {\r
+ int result = index.get(name);\r
+ if(result != 0) {\r
+ if(entry != null) entry.addOrSet(graph, graph.processor, result);\r
+ procedure.execute(graph, result);\r
+ return;\r
+ }\r
+ }\r
+ \r
+ if(entry != null) entry.addOrSet(graph, graph.processor, new Integer(0));\r
+ procedure.execute(graph, new Integer(0));\r
+\r
+ }\r
+\r
+ @Override\r
+ public void exception(ReadGraphImpl graph, Throwable t) {\r
+ if(entry != null) entry.except(t);\r
+ procedure.exception(graph, t);\r
+ }\r
+\r
+ });\r
+\r
+ }\r
+ \r
+ @Override\r
+ public void computeForEach(ReadGraphImpl graph, final QueryProcessor processor, final InternalProcedure<Integer> procedure) {\r
+ \r
+// new Exception("URIToResource " + id).printStackTrace();\r
+ \r
+ if("http://".equals(id) || "http:/".equals(id)) {\r
+ \r
+ addOrSet(graph, processor, processor.getRootLibrary());\r
+ procedure.execute(graph, processor.getRootLibrary());\r
+\r
+ } else {\r
+ \r
+ final String[] parts = URIStringUtils.splitURI(id);\r
+ if (parts != null) {\r
+ lookup(graph, processor, procedure, parts[0], parts[1]);\r
+ } else {\r
+ lookup(graph, processor, procedure, "http://", id.replaceFirst("http://", ""));\r
+ }\r
+\r
+ }\r
+ \r
+ }\r
+\r
+ final private static void computeForEach(ReadGraphImpl graph, String id, final URIToResource entry, final InternalProcedure<Integer> procedure) {\r
+ \r
+ if("http://".equals(id) || "http:/".equals(id)) {\r
+ \r
+ QueryProcessor processor = graph.processor;\r
+ if(entry != null) entry.addOrSet(graph, processor, processor.getRootLibrary());\r
+ procedure.execute(graph, processor.getRootLibrary());\r
+\r
+ } else {\r
+ \r
+ final String[] parts = URIStringUtils.splitURI(id);\r
+ if (parts != null) {\r
+ lookup(graph, entry, procedure, parts[0], parts[1]);\r
+ } else {\r
+ lookup(graph, entry, procedure, "http://", id.replaceFirst("http://", ""));\r
+ }\r
+\r
+ }\r
+ \r
+ }\r
+ \r
+ public void addOrSet(ReadGraphImpl graph, QueryProcessor provider, Integer result) {\r
+\r
+ assert(isPending());\r
+\r
+// ArrayList<InternalProcedure<Integer>> p = null;\r
+\r
+ synchronized(this) {\r
+\r
+ setResult(result);\r
+ setReady();\r
+// p = procs;\r
+// procs = null;\r
+ \r
+ }\r
+\r
+// if(p != null)\r
+// for(InternalProcedure<Integer> proc : p) proc.execute(graph, result);\r
+ \r
+ }\r
+ \r
+ @Override\r
+ public String toString() {\r
+ return "URIToResource[" + id + "]";\r
+ }\r
+\r
+ @Override\r
+ public void performFromCache(ReadGraphImpl graph, QueryProcessor provider, InternalProcedure<Integer> procedure) {\r
+ \r
+ assert(isReady());\r
+ \r
+ if(handleException(graph, procedure)) return;\r
+ \r
+ if(isExcepted()) {\r
+ procedure.exception(graph, (Throwable)statusOrException);\r
+ } else {\r
+ procedure.execute(graph, (Integer)getResult());\r
+ }\r
+ \r
+ }\r
+ \r
+ @Override\r
+ public void recompute(ReadGraphImpl graph, QueryProcessor provider) {\r
+ \r
+ final Semaphore s = new Semaphore(0);\r
+ \r
+ computeForEach(graph, provider, new InternalProcedure<Integer>() {\r
+\r
+ @Override\r
+ public void execute(ReadGraphImpl graph, Integer result) {\r
+ s.release();\r
+ }\r
+ \r
+ @Override\r
+ public void exception(ReadGraphImpl graph, Throwable t) {\r
+ if(DebugException.DEBUG) new DebugException(t).printStackTrace();\r
+ throw new Error("Error in recompute.", t);\r
+ }\r
+\r
+ });\r
+ \r
+ while(!s.tryAcquire()) {\r
+ provider.resume(graph);\r
+ }\r
+ \r
+ }\r
+ \r
+}\r
Code Review / simantics / platform.git / blobdiff