-/*******************************************************************************\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 java.util.concurrent.Semaphore;\r
-\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
-final public class ValueQuery extends UnaryQuery<InternalProcedure<byte[]>> {\r
- \r
- private ValueQuery(final int resource) {\r
- super(resource);\r
- }\r
- \r
- final static ValueQuery entry(final QueryProcessor provider, final int r) {\r
- return (ValueQuery)provider.valueMap.get(r);\r
- }\r
-\r
- final static byte[] runner(final ReadGraphImpl graph, final int r, CacheEntry parent, final ListenerBase listener, final InternalProcedure<byte[]> procedure) {\r
-\r
- QueryProcessor processor = graph.processor;\r
- \r
- ValueQuery entry = (ValueQuery)processor.valueMap.get(r); \r
- if(entry == null) {\r
- \r
- entry = new ValueQuery(r);\r
- entry.setPending();\r
- entry.clearResult(processor.querySupport);\r
- entry.putEntry(processor);\r
- \r
- return (byte[])processor.performForEach(graph, entry, parent, listener, procedure);\r
- \r
- } else {\r
- \r
- return (byte[])processor.performForEach(graph, entry, parent, listener, procedure);\r
- \r
- }\r
-\r
- }\r
- \r
- final public static byte[] queryEach(ReadGraphImpl graph, final int r, final CacheEntry parent, final ListenerBase listener, final InternalProcedure<byte[]> procedure) {\r
- \r
- assert(r != 0);\r
- \r
- if(graph.parent == null && listener == null) {\r
- return ValueQuery.computeForEach(graph, r, null, procedure);\r
- } else {\r
- return runner(graph, r, parent, listener, procedure);\r
- }\r
- \r
- }\r
-\r
- final public static byte[] queryEach(ReadGraphImpl graph, final int r, final CacheEntry parent) {\r
- \r
- assert(r != 0);\r
- \r
- if(graph.parent == null) {\r
- return ValueQuery.computeForEach(graph, r);\r
- } else {\r
- return runner(graph, r, parent, null, null);\r
- }\r
- \r
- }\r
- \r
- @Override\r
- public UnaryQuery<InternalProcedure<byte[]>> getEntry(QueryProcessor provider) {\r
- return provider.valueMap.get(id);\r
- }\r
- \r
- @Override\r
- public void putEntry(QueryProcessor provider) {\r
- provider.valueMap.put(id, this);\r
- }\r
-\r
- @Override\r
- final public void removeEntry(QueryProcessor provider) {\r
- provider.valueMap.remove(id);\r
- }\r
- \r
- \r
- public static byte[] computeForEach(ReadGraphImpl graph, final int r, final ValueQuery entry, final InternalProcedure<byte[]> procedure) {\r
-\r
- graph.ensureLoaded(r);\r
- \r
- byte[] value = graph.getValue(r);\r
- if(entry != null) {\r
- entry.setResult(value);\r
- entry.setReady();\r
- }\r
- if(procedure != null) {\r
- procedure.execute(graph, value);\r
- }\r
- \r
- return value;\r
- \r
- }\r
-\r
- public static byte[] computeForEach(ReadGraphImpl graph, final int r) {\r
-\r
- graph.ensureLoaded(r);\r
- \r
- return graph.getValue(r);\r
- \r
- }\r
- \r
- @Override\r
- public Object computeForEach(ReadGraphImpl graph, final QueryProcessor queryProvider, final InternalProcedure<byte[]> procedure, final boolean store) {\r
- return computeForEach(graph, id, this, procedure);\r
- }\r
- \r
- @Override\r
- public String toString() {\r
- return "Value[" + id + "]";\r
- }\r
-\r
- @Override\r
- public Object performFromCache(ReadGraphImpl graph, QueryProcessor queryProvider, InternalProcedure<byte[]> procedure) {\r
- return computeForEach(graph, queryProvider, procedure, false);\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<byte[]>() {\r
-\r
- @Override\r
- public void execute(ReadGraphImpl graph, byte[] result) {\r
- s.release();\r
- }\r
- \r
- @Override\r
- public void exception(ReadGraphImpl graph, Throwable t) {\r
- throw new Error("Error in recompute.", t);\r
- }\r
-\r
- }, true);\r
- \r
- while(!s.tryAcquire()) {\r
- provider.resume(graph);\r
- }\r
- \r
- }\r
- \r
- @Override\r
- boolean isImmutable(ReadGraphImpl graph) {\r
- return graph.processor.isImmutable(id);\r
- } \r
- \r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2018 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.impl.query;
+
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.impl.graph.ReadGraphImpl;
+import org.simantics.db.impl.procedure.InternalProcedure;
+
+public final class ValueQuery extends UnaryQueryP<byte[]> {
+
+ ValueQuery(int resource) {
+ super(resource);
+ }
+
+ @Override
+ public final void removeEntry(QueryProcessor provider) {
+ provider.cache.remove(this);
+ }
+
+ @Override
+ public void compute(ReadGraphImpl graph, InternalProcedure<byte[]> procedure) throws DatabaseException {
+ computeForEach(graph, id, this, procedure);
+ }
+
+ public static byte[] computeForEach(ReadGraphImpl graph, final int r, final ValueQuery entry, final InternalProcedure<byte[]> procedure_) throws DatabaseException {
+
+ InternalProcedure<byte[]> procedure = entry != null ? entry : procedure_;
+
+ graph.ensureLoaded(r);
+
+ byte[] value = graph.getValue(r);
+ if(procedure != null) procedure.execute(graph, value);
+
+ if(entry != null && procedure_ != null) entry.performFromCache(graph, procedure_);
+
+ return value;
+
+ }
+
+ @Override
+ public String toString() {
+ return "Value[" + id + "]";
+ }
+
+}
Code Review / simantics / platform.git / blobdiff