1 package org.simantics.scl.db;
3 import java.io.IOException;
5 import org.cojen.classfile.TypeDesc;
6 import org.simantics.Simantics;
7 import org.simantics.db.ReadGraph;
8 import org.simantics.db.Resource;
9 import org.simantics.db.VirtualGraph;
10 import org.simantics.db.WriteGraph;
11 import org.simantics.db.common.procedure.adapter.SyncListenerAdapter;
12 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
13 import org.simantics.db.common.request.BinaryRead;
14 import org.simantics.db.common.request.DelayedWriteRequest;
15 import org.simantics.db.common.request.ReadRequest;
16 import org.simantics.db.common.request.UnaryRead;
17 import org.simantics.db.common.request.WriteRequest;
18 import org.simantics.db.common.request.WriteResultRequest;
19 import org.simantics.db.exception.DatabaseException;
20 import org.simantics.db.layer0.util.Layer0Utils;
21 import org.simantics.db.layer0.variable.Variables;
22 import org.simantics.db.request.Read;
23 import org.simantics.db.service.ClusterControl;
24 import org.simantics.db.service.QueryControl;
25 import org.simantics.db.service.SerialisationSupport;
26 import org.simantics.db.service.VirtualGraphSupport;
27 import org.simantics.layer0.utils.triggers.IActivationManager;
28 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;
29 import org.simantics.scl.compiler.errors.Failable;
30 import org.simantics.scl.compiler.internal.codegen.types.JavaTypeTranslator;
31 import org.simantics.scl.compiler.module.Module;
32 import org.simantics.scl.compiler.module.repository.ImportFailureException;
33 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
34 import org.simantics.scl.compiler.types.Type;
35 import org.simantics.scl.osgi.SCLOsgi;
36 import org.simantics.scl.runtime.SCLContext;
37 import org.simantics.scl.runtime.function.Function;
38 import org.simantics.scl.runtime.function.Function1;
39 import org.simantics.scl.runtime.tuple.Tuple;
40 import org.simantics.scl.runtime.tuple.Tuple0;
41 import org.simantics.utils.DataContainer;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
45 @SuppressWarnings({"rawtypes", "unchecked"})
46 public class SCLFunctions {
48 private static final Logger LOGGER = LoggerFactory.getLogger(SCLFunctions.class);
50 public static final String GRAPH = "graph";
52 public static <T> T safeExec(final Function f) {
54 return (T)f.apply(Tuple0.INSTANCE);
55 } catch (Throwable t) {
56 LOGGER.error("safeExec caught exception", t);
61 public static void asyncRead(final Function f) throws DatabaseException {
62 final SCLContext context = SCLContext.createDerivedContext();
63 Simantics.getSession().asyncRequest(new ReadRequest() {
65 public void run(ReadGraph graph) throws DatabaseException {
66 SCLContext.push(context);
67 context.put(GRAPH, graph);
69 f.apply(Tuple0.INSTANCE);
77 public static <T> T syncRead(final Function f) throws DatabaseException {
78 final SCLContext context = SCLContext.getCurrent();
79 Object graph = context.get(GRAPH);
81 return (T)f.apply(Tuple0.INSTANCE);
83 return Simantics.getSession().syncRequest(new Read<T>() {
85 public T perform(ReadGraph graph) throws DatabaseException {
86 SCLContext.push(context);
87 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
89 return (T)f.apply(Tuple0.INSTANCE);
91 context.put(GRAPH, oldGraph);
99 public static void asyncWrite(final Function f) throws DatabaseException {
100 SCLContext context = SCLContext.createDerivedContext();
101 if (Simantics.peekSession() != null) {
102 Simantics.getSession().asyncRequest(new WriteRequest() {
104 public void perform(WriteGraph graph) throws DatabaseException {
105 SCLContext.push(context);
106 context.put(GRAPH, graph);
108 f.apply(Tuple0.INSTANCE);
115 LOGGER.warn("No session available for asynchronous write requests");
119 public static <T> T syncWrite(final Function f) throws DatabaseException {
120 final SCLContext context = SCLContext.getCurrent();
121 Object graph = context.get(GRAPH);
123 return (T)f.apply(Tuple0.INSTANCE);
125 return Simantics.getSession().syncRequest(new WriteResultRequest<T>() {
127 public T perform(WriteGraph graph) throws DatabaseException {
128 SCLContext.push(context);
129 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
131 return (T)f.apply(Tuple0.INSTANCE);
133 context.put(GRAPH, oldGraph);
141 public static <T> T delayedSyncWrite(final Function f) throws DatabaseException {
142 final SCLContext context = SCLContext.getCurrent();
143 final DataContainer<T> dc = new DataContainer<T>(null);
145 DelayedWriteRequest request = new DelayedWriteRequest() {
147 public void perform(WriteGraph graph) throws DatabaseException {
148 final SCLContext context = SCLContext.getCurrent();
149 SCLContext.push(context);
150 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
152 dc.set((T)f.apply(Tuple0.INSTANCE));
154 context.put(GRAPH, oldGraph);
160 Object graph = context.get(GRAPH);
162 if (graph instanceof WriteGraph) {
163 ((WriteGraph)graph).syncRequest(request);
165 throw new DatabaseException("Caller is inside a read transaction.");
168 Simantics.getSession().syncRequest(request);
173 public static <T> T virtualSyncWriteMem(WriteGraph graph, String virtualGraphId, final Function f) throws DatabaseException {
174 final SCLContext context = SCLContext.getCurrent();
175 VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
176 VirtualGraph vg = vgs.getMemoryPersistent(virtualGraphId);
177 return graph.syncRequest(new WriteResultRequest<T>(vg) {
179 public T perform(WriteGraph graph) throws DatabaseException {
180 SCLContext.push(context);
181 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
183 return (T)f.apply(Tuple0.INSTANCE);
185 context.put(GRAPH, oldGraph);
192 public static <T> T virtualSyncWriteWS(WriteGraph graph, String virtualGraphId, final Function f) throws DatabaseException {
193 final SCLContext context = SCLContext.getCurrent();
194 VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
195 VirtualGraph vg = vgs.getWorkspacePersistent(virtualGraphId);
196 return graph.syncRequest(new WriteResultRequest<T>(vg) {
198 public T perform(WriteGraph graph) throws DatabaseException {
199 SCLContext.push(context);
200 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
202 return (T)f.apply(Tuple0.INSTANCE);
204 context.put(GRAPH, oldGraph);
211 public static <T> T readValue(final String uri) throws DatabaseException {
212 return Simantics.getSession().syncRequest(new Read<T>() {
214 public T perform(ReadGraph graph) throws DatabaseException {
215 return Variables.getVariable(graph, uri).getValue(graph);
220 public static <T> void writeValue(final String uri, final T value) throws DatabaseException {
221 Simantics.getSession().syncRequest(new WriteRequest() {
223 public void perform(WriteGraph graph) throws DatabaseException {
224 Variables.getVariable(graph, uri).setValue(graph, value);
229 public static void activateOnce(Resource r) {
230 Simantics.getSession().getService(IActivationManager.class).activateOnce(r);
233 public static void syncActivateOnce(WriteGraph graph, Resource r) throws DatabaseException {
234 graph.getService(IActivationManager.class).activateOnce(graph, r);
237 public static Resource resourceFromId(ReadGraph graph, long id) throws DatabaseException, IOException {
238 SerialisationSupport ss = graph.getService(SerialisationSupport.class);
239 return ss.getResource(id);
242 public static void disableDependencies(WriteGraph graph) {
243 Layer0Utils.setDependenciesIndexingDisabled(graph, true);
246 public static void enableDependencies(WriteGraph graph) {
247 Layer0Utils.setDependenciesIndexingDisabled(graph, false);
250 public static void collectClusters() {
251 Simantics.getSession().getService(ClusterControl.class).collectClusters(Integer.MAX_VALUE);
254 public static class SCLUnaryRead extends BinaryRead<Function1<Object,Object>, Object, Object> {
256 public SCLUnaryRead(Function1<Object, Object> parameter1, Object parameter2) {
257 super(parameter1, parameter2);
261 public Object perform(ReadGraph graph) throws DatabaseException {
262 return Simantics.applySCLRead(graph, parameter, parameter2);
267 public static Object unaryQuery(ReadGraph graph, Function1<Object,Object> fn, Object value) throws DatabaseException {
268 return graph.syncRequest(new SCLUnaryRead(fn, value));
271 public static Object unaryQueryCached(ReadGraph graph, Function1<Object,Object> fn, Object value) throws DatabaseException {
272 return graph.syncRequest(new SCLUnaryRead(fn, value), TransientCacheAsyncListener.<Object>instance());
276 private static class Subquery extends UnaryRead<Function, Object> {
278 public Subquery(Function q) {
283 public Object perform(ReadGraph graph) throws DatabaseException {
284 return Simantics.applySCLRead(graph, parameter, Tuple0.INSTANCE);
289 public static Object subquery(ReadGraph graph, Function q) throws DatabaseException {
290 return graph.syncRequest(new Subquery(q));
293 public static Object subqueryC(ReadGraph graph, Function q) throws DatabaseException {
294 return graph.syncRequest(new Subquery(q), TransientCacheAsyncListener.<Object>instance());
297 public static void subqueryL(ReadGraph graph, Function query, Function executeCallback, Function1<Throwable, Tuple> exceptionCallback, Function1<Tuple0, Boolean> isDisposedCallback) throws DatabaseException {
298 graph.asyncRequest(new Subquery(query), new SyncListenerAdapter<Object>() {
300 public void execute(ReadGraph graph, Object result) throws DatabaseException {
301 Simantics.applySCLRead(graph, executeCallback, result);
305 public void exception(ReadGraph graph, Throwable t) throws DatabaseException {
306 Simantics.applySCLRead(graph, exceptionCallback, t);
310 public boolean isDisposed() {
311 return isDisposedCallback.apply(Tuple0.INSTANCE);
316 public static Object possibleFromDynamic(Type expectedType, String moduleName, Object value) {
321 Failable<Module> failable = SCLOsgi.MODULE_REPOSITORY.getModule(moduleName);
322 Module module = failable.getResult();
324 RuntimeEnvironment env = SCLOsgi.MODULE_REPOSITORY.createRuntimeEnvironment(
325 EnvironmentSpecification.of(moduleName, ""), module.getParentClassLoader());
327 JavaTypeTranslator tr = new JavaTypeTranslator(env.getEnvironment());
328 TypeDesc desc = tr.toTypeDesc(expectedType);
329 String className = desc.getFullName();
330 Class<?> clazz = env.getMutableClassLoader().loadClass(className);
331 if (!clazz.isAssignableFrom(value.getClass()))
334 } catch (ImportFailureException | ClassNotFoundException e) {
339 public static void restrictQueries(ReadGraph graph, int amount, int step, int maxTimeInMs) {
341 QueryControl qc = graph.getService(QueryControl.class);
342 long start = System.currentTimeMillis();
344 int current = qc.count();
345 if(current < amount) return;
347 long duration = System.currentTimeMillis() - start;
348 if(duration > maxTimeInMs) return;
353 public static int countQueries(ReadGraph graph) {
355 QueryControl qc = graph.getService(QueryControl.class);