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.WriteRequest;
17 import org.simantics.db.common.request.WriteResultRequest;
18 import org.simantics.db.exception.DatabaseException;
19 import org.simantics.db.layer0.util.Layer0Utils;
20 import org.simantics.db.layer0.variable.Variables;
21 import org.simantics.db.request.Read;
22 import org.simantics.db.service.ClusterControl;
23 import org.simantics.db.service.SerialisationSupport;
24 import org.simantics.db.service.VirtualGraphSupport;
25 import org.simantics.layer0.utils.triggers.IActivationManager;
26 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;
27 import org.simantics.scl.compiler.errors.Failable;
28 import org.simantics.scl.compiler.internal.codegen.types.JavaTypeTranslator;
29 import org.simantics.scl.compiler.module.Module;
30 import org.simantics.scl.compiler.module.repository.ImportFailureException;
31 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
32 import org.simantics.scl.compiler.types.Type;
33 import org.simantics.scl.osgi.SCLOsgi;
34 import org.simantics.scl.runtime.SCLContext;
35 import org.simantics.scl.runtime.function.Function;
36 import org.simantics.scl.runtime.function.Function1;
37 import org.simantics.scl.runtime.tuple.Tuple;
38 import org.simantics.scl.runtime.tuple.Tuple0;
39 import org.simantics.utils.DataContainer;
41 @SuppressWarnings({"rawtypes", "unchecked"})
42 public class SCLFunctions {
44 public static final String GRAPH = "graph";
46 public static <T> T safeExec(final Function f) {
48 return (T)f.apply(Tuple0.INSTANCE);
49 } catch (Throwable t) {
55 public static void asyncRead(final Function f) throws DatabaseException {
56 final SCLContext context = SCLContext.createDerivedContext();
57 Simantics.getSession().asyncRequest(new ReadRequest() {
59 public void run(ReadGraph graph) throws DatabaseException {
60 SCLContext.push(context);
61 context.put(GRAPH, graph);
63 f.apply(Tuple0.INSTANCE);
71 public static <T> T syncRead(final Function f) throws DatabaseException {
72 final SCLContext context = SCLContext.getCurrent();
73 Object graph = context.get(GRAPH);
75 return (T)f.apply(Tuple0.INSTANCE);
77 return Simantics.getSession().syncRequest(new Read<T>() {
79 public T perform(ReadGraph graph) throws DatabaseException {
80 SCLContext.push(context);
81 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
83 return (T)f.apply(Tuple0.INSTANCE);
85 context.put(GRAPH, oldGraph);
93 public static void asyncWrite(final Function f) throws DatabaseException {
94 SCLContext context = SCLContext.createDerivedContext();
95 Simantics.getSession().asyncRequest(new WriteRequest() {
97 public void perform(WriteGraph graph) throws DatabaseException {
98 SCLContext.push(context);
99 context.put(GRAPH, graph);
101 f.apply(Tuple0.INSTANCE);
109 public static <T> T syncWrite(final Function f) throws DatabaseException {
110 final SCLContext context = SCLContext.getCurrent();
111 Object graph = context.get(GRAPH);
113 return (T)f.apply(Tuple0.INSTANCE);
115 return Simantics.getSession().syncRequest(new WriteResultRequest<T>() {
117 public T perform(WriteGraph graph) throws DatabaseException {
118 SCLContext.push(context);
119 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
121 return (T)f.apply(Tuple0.INSTANCE);
123 context.put(GRAPH, oldGraph);
131 public static <T> T delayedSyncWrite(final Function f) throws DatabaseException {
132 final SCLContext context = SCLContext.getCurrent();
133 final DataContainer<T> dc = new DataContainer<T>(null);
135 DelayedWriteRequest request = new DelayedWriteRequest() {
137 public void perform(WriteGraph graph) throws DatabaseException {
138 final SCLContext context = SCLContext.getCurrent();
139 SCLContext.push(context);
140 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
142 dc.set((T)f.apply(Tuple0.INSTANCE));
144 context.put(GRAPH, oldGraph);
150 Object graph = context.get(GRAPH);
152 if (graph instanceof WriteGraph) {
153 ((WriteGraph)graph).syncRequest(request);
155 throw new DatabaseException("Caller is inside a read transaction.");
158 Simantics.getSession().syncRequest(request);
163 public static <T> T virtualSyncWriteMem(WriteGraph graph, String virtualGraphId, final Function f) throws DatabaseException {
164 final SCLContext context = SCLContext.getCurrent();
165 VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
166 VirtualGraph vg = vgs.getMemoryPersistent(virtualGraphId);
167 return graph.syncRequest(new WriteResultRequest<T>(vg) {
169 public T perform(WriteGraph graph) throws DatabaseException {
170 SCLContext.push(context);
171 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
173 return (T)f.apply(Tuple0.INSTANCE);
175 context.put(GRAPH, oldGraph);
182 public static <T> T virtualSyncWriteWS(WriteGraph graph, String virtualGraphId, final Function f) throws DatabaseException {
183 final SCLContext context = SCLContext.getCurrent();
184 VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
185 VirtualGraph vg = vgs.getWorkspacePersistent(virtualGraphId);
186 return graph.syncRequest(new WriteResultRequest<T>(vg) {
188 public T perform(WriteGraph graph) throws DatabaseException {
189 SCLContext.push(context);
190 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
192 return (T)f.apply(Tuple0.INSTANCE);
194 context.put(GRAPH, oldGraph);
201 public static <T> T readValue(final String uri) throws DatabaseException {
202 return Simantics.getSession().syncRequest(new Read<T>() {
204 public T perform(ReadGraph graph) throws DatabaseException {
205 return Variables.getVariable(graph, uri).getValue(graph);
210 public static <T> void writeValue(final String uri, final T value) throws DatabaseException {
211 Simantics.getSession().syncRequest(new WriteRequest() {
213 public void perform(WriteGraph graph) throws DatabaseException {
214 Variables.getVariable(graph, uri).setValue(graph, value);
219 public static void activateOnce(Resource r) {
220 Simantics.getSession().getService(IActivationManager.class).activateOnce(r);
223 public static void syncActivateOnce(WriteGraph graph, Resource r) throws DatabaseException {
224 graph.getService(IActivationManager.class).activateOnce(graph, r);
227 public static Resource resourceFromId(ReadGraph graph, long id) throws DatabaseException, IOException {
228 SerialisationSupport ss = graph.getService(SerialisationSupport.class);
229 return ss.getResource(id);
232 public static void disableDependencies(WriteGraph graph) {
233 Layer0Utils.setDependenciesIndexingDisabled(graph, true);
236 public static void enableDependencies(WriteGraph graph) {
237 Layer0Utils.setDependenciesIndexingDisabled(graph, false);
240 public static void collectClusters() {
241 Simantics.getSession().getService(ClusterControl.class).collectClusters(Integer.MAX_VALUE);
244 public static class SCLUnaryRead extends BinaryRead<Function1<Object,Object>, Object, Object> {
246 public SCLUnaryRead(Function1<Object, Object> parameter1, Object parameter2) {
247 super(parameter1, parameter2);
251 public Object perform(ReadGraph graph) throws DatabaseException {
252 return Simantics.applySCLRead(graph, parameter, parameter2);
257 public static Object unaryQuery(ReadGraph graph, Function1<Object,Object> fn, Object value) throws DatabaseException {
258 return graph.syncRequest(new SCLUnaryRead(fn, value));
261 public static Object unaryQueryCached(ReadGraph graph, Function1<Object,Object> fn, Object value) throws DatabaseException {
262 return graph.syncRequest(new SCLUnaryRead(fn, value), TransientCacheAsyncListener.<Object>instance());
266 private static class Subquery implements Read<Object> {
269 public Subquery(Function q) {
274 public Object perform(ReadGraph graph) throws DatabaseException {
275 SCLContext sclContext = SCLContext.getCurrent();
276 Object oldGraph = sclContext.put("graph", graph);
278 return q.apply(Tuple0.INSTANCE);
279 } catch (Throwable e) {
280 if(e instanceof DatabaseException)
281 throw (DatabaseException)e;
283 throw new DatabaseException(e);
285 sclContext.put("graph", oldGraph);
290 public int hashCode() {
295 public boolean equals(Object obj) {
298 if(obj == null || obj.getClass() != getClass())
300 Subquery other = (Subquery)obj;
301 return q.equals(other.q);
305 public static Object subquery(ReadGraph graph, Function q) throws DatabaseException {
306 return graph.syncRequest(new Subquery(q));
309 public static Object subqueryC(ReadGraph graph, Function q) throws DatabaseException {
310 return graph.syncRequest(new Subquery(q), TransientCacheAsyncListener.<Object>instance());
313 public static void subqueryL(ReadGraph graph, Function query, Function executeCallback, Function1<Throwable, Tuple> exceptionCallback, Function1<Tuple0, Boolean> isDisposedCallback) throws DatabaseException {
314 graph.asyncRequest(new Subquery(query), new SyncListenerAdapter<Object>() {
317 public void execute(ReadGraph graph, Object result) {
318 executeCallback.apply(result);
322 public void exception(ReadGraph graph, Throwable t) {
323 exceptionCallback.apply(t);
327 public boolean isDisposed() {
328 return isDisposedCallback.apply(Tuple0.INSTANCE);
333 public static Object possibleFromDynamic(Type expectedType, String moduleName, Object value) {
338 Failable<Module> failable = SCLOsgi.MODULE_REPOSITORY.getModule(moduleName);
339 Module module = failable.getResult();
341 RuntimeEnvironment env = SCLOsgi.MODULE_REPOSITORY.createRuntimeEnvironment(
342 EnvironmentSpecification.of(moduleName, ""), module.getParentClassLoader());
344 JavaTypeTranslator tr = new JavaTypeTranslator(env.getEnvironment());
345 TypeDesc desc = tr.toTypeDesc(expectedType);
346 String className = desc.getFullName();
347 Class<?> clazz = env.getMutableClassLoader().loadClass(className);
348 if (!clazz.isAssignableFrom(value.getClass()))
351 } catch (ImportFailureException | ClassNotFoundException e) {