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;
43 @SuppressWarnings({"rawtypes", "unchecked"})
44 public class SCLFunctions {
46 public static final String GRAPH = "graph";
48 public static <T> T safeExec(final Function f) {
50 return (T)f.apply(Tuple0.INSTANCE);
51 } catch (Throwable t) {
57 public static void asyncRead(final Function f) throws DatabaseException {
58 final SCLContext context = SCLContext.createDerivedContext();
59 Simantics.getSession().asyncRequest(new ReadRequest() {
61 public void run(ReadGraph graph) throws DatabaseException {
62 SCLContext.push(context);
63 context.put(GRAPH, graph);
65 f.apply(Tuple0.INSTANCE);
73 public static <T> T syncRead(final Function f) throws DatabaseException {
74 final SCLContext context = SCLContext.getCurrent();
75 Object graph = context.get(GRAPH);
77 return (T)f.apply(Tuple0.INSTANCE);
79 return Simantics.getSession().syncRequest(new Read<T>() {
81 public T perform(ReadGraph graph) throws DatabaseException {
82 SCLContext.push(context);
83 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
85 return (T)f.apply(Tuple0.INSTANCE);
87 context.put(GRAPH, oldGraph);
95 public static void asyncWrite(final Function f) throws DatabaseException {
96 SCLContext context = SCLContext.createDerivedContext();
97 Simantics.getSession().asyncRequest(new WriteRequest() {
99 public void perform(WriteGraph graph) throws DatabaseException {
100 SCLContext.push(context);
101 context.put(GRAPH, graph);
103 f.apply(Tuple0.INSTANCE);
111 public static <T> T syncWrite(final Function f) throws DatabaseException {
112 final SCLContext context = SCLContext.getCurrent();
113 Object graph = context.get(GRAPH);
115 return (T)f.apply(Tuple0.INSTANCE);
117 return Simantics.getSession().syncRequest(new WriteResultRequest<T>() {
119 public T perform(WriteGraph graph) throws DatabaseException {
120 SCLContext.push(context);
121 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
123 return (T)f.apply(Tuple0.INSTANCE);
125 context.put(GRAPH, oldGraph);
133 public static <T> T delayedSyncWrite(final Function f) throws DatabaseException {
134 final SCLContext context = SCLContext.getCurrent();
135 final DataContainer<T> dc = new DataContainer<T>(null);
137 DelayedWriteRequest request = new DelayedWriteRequest() {
139 public void perform(WriteGraph graph) throws DatabaseException {
140 final SCLContext context = SCLContext.getCurrent();
141 SCLContext.push(context);
142 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
144 dc.set((T)f.apply(Tuple0.INSTANCE));
146 context.put(GRAPH, oldGraph);
152 Object graph = context.get(GRAPH);
154 if (graph instanceof WriteGraph) {
155 ((WriteGraph)graph).syncRequest(request);
157 throw new DatabaseException("Caller is inside a read transaction.");
160 Simantics.getSession().syncRequest(request);
165 public static <T> T virtualSyncWriteMem(WriteGraph graph, String virtualGraphId, final Function f) throws DatabaseException {
166 final SCLContext context = SCLContext.getCurrent();
167 VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
168 VirtualGraph vg = vgs.getMemoryPersistent(virtualGraphId);
169 return graph.syncRequest(new WriteResultRequest<T>(vg) {
171 public T perform(WriteGraph graph) throws DatabaseException {
172 SCLContext.push(context);
173 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
175 return (T)f.apply(Tuple0.INSTANCE);
177 context.put(GRAPH, oldGraph);
184 public static <T> T virtualSyncWriteWS(WriteGraph graph, String virtualGraphId, final Function f) throws DatabaseException {
185 final SCLContext context = SCLContext.getCurrent();
186 VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
187 VirtualGraph vg = vgs.getWorkspacePersistent(virtualGraphId);
188 return graph.syncRequest(new WriteResultRequest<T>(vg) {
190 public T perform(WriteGraph graph) throws DatabaseException {
191 SCLContext.push(context);
192 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
194 return (T)f.apply(Tuple0.INSTANCE);
196 context.put(GRAPH, oldGraph);
203 public static <T> T readValue(final String uri) throws DatabaseException {
204 return Simantics.getSession().syncRequest(new Read<T>() {
206 public T perform(ReadGraph graph) throws DatabaseException {
207 return Variables.getVariable(graph, uri).getValue(graph);
212 public static <T> void writeValue(final String uri, final T value) throws DatabaseException {
213 Simantics.getSession().syncRequest(new WriteRequest() {
215 public void perform(WriteGraph graph) throws DatabaseException {
216 Variables.getVariable(graph, uri).setValue(graph, value);
221 public static void activateOnce(Resource r) {
222 Simantics.getSession().getService(IActivationManager.class).activateOnce(r);
225 public static void syncActivateOnce(WriteGraph graph, Resource r) throws DatabaseException {
226 graph.getService(IActivationManager.class).activateOnce(graph, r);
229 public static Resource resourceFromId(ReadGraph graph, long id) throws DatabaseException, IOException {
230 SerialisationSupport ss = graph.getService(SerialisationSupport.class);
231 return ss.getResource(id);
234 public static void disableDependencies(WriteGraph graph) {
235 Layer0Utils.setDependenciesIndexingDisabled(graph, true);
238 public static void enableDependencies(WriteGraph graph) {
239 Layer0Utils.setDependenciesIndexingDisabled(graph, false);
242 public static void collectClusters() {
243 Simantics.getSession().getService(ClusterControl.class).collectClusters(Integer.MAX_VALUE);
246 public static class SCLUnaryRead extends BinaryRead<Function1<Object,Object>, Object, Object> {
248 public SCLUnaryRead(Function1<Object, Object> parameter1, Object parameter2) {
249 super(parameter1, parameter2);
253 public Object perform(ReadGraph graph) throws DatabaseException {
254 return Simantics.applySCLRead(graph, parameter, parameter2);
259 public static Object unaryQuery(ReadGraph graph, Function1<Object,Object> fn, Object value) throws DatabaseException {
260 return graph.syncRequest(new SCLUnaryRead(fn, value));
263 public static Object unaryQueryCached(ReadGraph graph, Function1<Object,Object> fn, Object value) throws DatabaseException {
264 return graph.syncRequest(new SCLUnaryRead(fn, value), TransientCacheAsyncListener.<Object>instance());
268 private static class Subquery extends UnaryRead<Function, Object> {
270 public Subquery(Function q) {
275 public Object perform(ReadGraph graph) throws DatabaseException {
276 return Simantics.applySCLRead(graph, parameter, Tuple0.INSTANCE);
281 public static Object subquery(ReadGraph graph, Function q) throws DatabaseException {
282 return graph.syncRequest(new Subquery(q));
285 public static Object subqueryC(ReadGraph graph, Function q) throws DatabaseException {
286 return graph.syncRequest(new Subquery(q), TransientCacheAsyncListener.<Object>instance());
289 public static void subqueryL(ReadGraph graph, Function query, Function executeCallback, Function1<Throwable, Tuple> exceptionCallback, Function1<Tuple0, Boolean> isDisposedCallback) throws DatabaseException {
290 graph.asyncRequest(new Subquery(query), new SyncListenerAdapter<Object>() {
292 public void execute(ReadGraph graph, Object result) throws DatabaseException {
293 Simantics.applySCLRead(graph, executeCallback, result);
297 public void exception(ReadGraph graph, Throwable t) throws DatabaseException {
298 Simantics.applySCLRead(graph, exceptionCallback, t);
302 public boolean isDisposed() {
303 return isDisposedCallback.apply(Tuple0.INSTANCE);
308 public static Object possibleFromDynamic(Type expectedType, String moduleName, Object value) {
313 Failable<Module> failable = SCLOsgi.MODULE_REPOSITORY.getModule(moduleName);
314 Module module = failable.getResult();
316 RuntimeEnvironment env = SCLOsgi.MODULE_REPOSITORY.createRuntimeEnvironment(
317 EnvironmentSpecification.of(moduleName, ""), module.getParentClassLoader());
319 JavaTypeTranslator tr = new JavaTypeTranslator(env.getEnvironment());
320 TypeDesc desc = tr.toTypeDesc(expectedType);
321 String className = desc.getFullName();
322 Class<?> clazz = env.getMutableClassLoader().loadClass(className);
323 if (!clazz.isAssignableFrom(value.getClass()))
326 } catch (ImportFailureException | ClassNotFoundException e) {
331 public static void restrictQueries(ReadGraph graph, int amount, int step, int maxTimeInMs) {
333 QueryControl qc = graph.getService(QueryControl.class);
334 long start = System.currentTimeMillis();
336 int current = qc.count();
337 if(current < amount) return;
339 long duration = System.currentTimeMillis() - start;
340 if(duration > maxTimeInMs) return;
345 public static int countQueries(ReadGraph graph) {
347 QueryControl qc = graph.getService(QueryControl.class);