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.SerialisationSupport;
25 import org.simantics.db.service.VirtualGraphSupport;
26 import org.simantics.layer0.utils.triggers.IActivationManager;
27 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;
28 import org.simantics.scl.compiler.errors.Failable;
29 import org.simantics.scl.compiler.internal.codegen.types.JavaTypeTranslator;
30 import org.simantics.scl.compiler.module.Module;
31 import org.simantics.scl.compiler.module.repository.ImportFailureException;
32 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
33 import org.simantics.scl.compiler.types.Type;
34 import org.simantics.scl.osgi.SCLOsgi;
35 import org.simantics.scl.runtime.SCLContext;
36 import org.simantics.scl.runtime.function.Function;
37 import org.simantics.scl.runtime.function.Function1;
38 import org.simantics.scl.runtime.tuple.Tuple;
39 import org.simantics.scl.runtime.tuple.Tuple0;
40 import org.simantics.utils.DataContainer;
42 @SuppressWarnings({"rawtypes", "unchecked"})
43 public class SCLFunctions {
45 public static final String GRAPH = "graph";
47 public static <T> T safeExec(final Function f) {
49 return (T)f.apply(Tuple0.INSTANCE);
50 } catch (Throwable t) {
56 public static void asyncRead(final Function f) throws DatabaseException {
57 final SCLContext context = SCLContext.createDerivedContext();
58 Simantics.getSession().asyncRequest(new ReadRequest() {
60 public void run(ReadGraph graph) throws DatabaseException {
61 SCLContext.push(context);
62 context.put(GRAPH, graph);
64 f.apply(Tuple0.INSTANCE);
72 public static <T> T syncRead(final Function f) throws DatabaseException {
73 final SCLContext context = SCLContext.getCurrent();
74 Object graph = context.get(GRAPH);
76 return (T)f.apply(Tuple0.INSTANCE);
78 return Simantics.getSession().syncRequest(new Read<T>() {
80 public T perform(ReadGraph graph) throws DatabaseException {
81 SCLContext.push(context);
82 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
84 return (T)f.apply(Tuple0.INSTANCE);
86 context.put(GRAPH, oldGraph);
94 public static void asyncWrite(final Function f) throws DatabaseException {
95 SCLContext context = SCLContext.createDerivedContext();
96 Simantics.getSession().asyncRequest(new WriteRequest() {
98 public void perform(WriteGraph graph) throws DatabaseException {
99 SCLContext.push(context);
100 context.put(GRAPH, graph);
102 f.apply(Tuple0.INSTANCE);
110 public static <T> T syncWrite(final Function f) throws DatabaseException {
111 final SCLContext context = SCLContext.getCurrent();
112 Object graph = context.get(GRAPH);
114 return (T)f.apply(Tuple0.INSTANCE);
116 return Simantics.getSession().syncRequest(new WriteResultRequest<T>() {
118 public T perform(WriteGraph graph) throws DatabaseException {
119 SCLContext.push(context);
120 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
122 return (T)f.apply(Tuple0.INSTANCE);
124 context.put(GRAPH, oldGraph);
132 public static <T> T delayedSyncWrite(final Function f) throws DatabaseException {
133 final SCLContext context = SCLContext.getCurrent();
134 final DataContainer<T> dc = new DataContainer<T>(null);
136 DelayedWriteRequest request = new DelayedWriteRequest() {
138 public void perform(WriteGraph graph) throws DatabaseException {
139 final SCLContext context = SCLContext.getCurrent();
140 SCLContext.push(context);
141 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
143 dc.set((T)f.apply(Tuple0.INSTANCE));
145 context.put(GRAPH, oldGraph);
151 Object graph = context.get(GRAPH);
153 if (graph instanceof WriteGraph) {
154 ((WriteGraph)graph).syncRequest(request);
156 throw new DatabaseException("Caller is inside a read transaction.");
159 Simantics.getSession().syncRequest(request);
164 public static <T> T virtualSyncWriteMem(WriteGraph graph, String virtualGraphId, final Function f) throws DatabaseException {
165 final SCLContext context = SCLContext.getCurrent();
166 VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
167 VirtualGraph vg = vgs.getMemoryPersistent(virtualGraphId);
168 return graph.syncRequest(new WriteResultRequest<T>(vg) {
170 public T perform(WriteGraph graph) throws DatabaseException {
171 SCLContext.push(context);
172 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
174 return (T)f.apply(Tuple0.INSTANCE);
176 context.put(GRAPH, oldGraph);
183 public static <T> T virtualSyncWriteWS(WriteGraph graph, String virtualGraphId, final Function f) throws DatabaseException {
184 final SCLContext context = SCLContext.getCurrent();
185 VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
186 VirtualGraph vg = vgs.getWorkspacePersistent(virtualGraphId);
187 return graph.syncRequest(new WriteResultRequest<T>(vg) {
189 public T perform(WriteGraph graph) throws DatabaseException {
190 SCLContext.push(context);
191 ReadGraph oldGraph = (ReadGraph)context.put(GRAPH, graph);
193 return (T)f.apply(Tuple0.INSTANCE);
195 context.put(GRAPH, oldGraph);
202 public static <T> T readValue(final String uri) throws DatabaseException {
203 return Simantics.getSession().syncRequest(new Read<T>() {
205 public T perform(ReadGraph graph) throws DatabaseException {
206 return Variables.getVariable(graph, uri).getValue(graph);
211 public static <T> void writeValue(final String uri, final T value) throws DatabaseException {
212 Simantics.getSession().syncRequest(new WriteRequest() {
214 public void perform(WriteGraph graph) throws DatabaseException {
215 Variables.getVariable(graph, uri).setValue(graph, value);
220 public static void activateOnce(Resource r) {
221 Simantics.getSession().getService(IActivationManager.class).activateOnce(r);
224 public static void syncActivateOnce(WriteGraph graph, Resource r) throws DatabaseException {
225 graph.getService(IActivationManager.class).activateOnce(graph, r);
228 public static Resource resourceFromId(ReadGraph graph, long id) throws DatabaseException, IOException {
229 SerialisationSupport ss = graph.getService(SerialisationSupport.class);
230 return ss.getResource(id);
233 public static void disableDependencies(WriteGraph graph) {
234 Layer0Utils.setDependenciesIndexingDisabled(graph, true);
237 public static void enableDependencies(WriteGraph graph) {
238 Layer0Utils.setDependenciesIndexingDisabled(graph, false);
241 public static void collectClusters() {
242 Simantics.getSession().getService(ClusterControl.class).collectClusters(Integer.MAX_VALUE);
245 public static class SCLUnaryRead extends BinaryRead<Function1<Object,Object>, Object, Object> {
247 public SCLUnaryRead(Function1<Object, Object> parameter1, Object parameter2) {
248 super(parameter1, parameter2);
252 public Object perform(ReadGraph graph) throws DatabaseException {
253 return Simantics.applySCLRead(graph, parameter, parameter2);
258 public static Object unaryQuery(ReadGraph graph, Function1<Object,Object> fn, Object value) throws DatabaseException {
259 return graph.syncRequest(new SCLUnaryRead(fn, value));
262 public static Object unaryQueryCached(ReadGraph graph, Function1<Object,Object> fn, Object value) throws DatabaseException {
263 return graph.syncRequest(new SCLUnaryRead(fn, value), TransientCacheAsyncListener.<Object>instance());
267 private static class Subquery extends UnaryRead<Function, Object> {
269 public Subquery(Function q) {
274 public Object perform(ReadGraph graph) throws DatabaseException {
275 return Simantics.applySCLRead(graph, parameter, Tuple0.INSTANCE);
280 public static Object subquery(ReadGraph graph, Function q) throws DatabaseException {
281 return graph.syncRequest(new Subquery(q));
284 public static Object subqueryC(ReadGraph graph, Function q) throws DatabaseException {
285 return graph.syncRequest(new Subquery(q), TransientCacheAsyncListener.<Object>instance());
288 public static void subqueryL(ReadGraph graph, Function query, Function executeCallback, Function1<Throwable, Tuple> exceptionCallback, Function1<Tuple0, Boolean> isDisposedCallback) throws DatabaseException {
289 graph.asyncRequest(new Subquery(query), new SyncListenerAdapter<Object>() {
291 public void execute(ReadGraph graph, Object result) throws DatabaseException {
292 Simantics.applySCLRead(graph, executeCallback, result);
296 public void exception(ReadGraph graph, Throwable t) throws DatabaseException {
297 Simantics.applySCLRead(graph, exceptionCallback, t);
301 public boolean isDisposed() {
302 return isDisposedCallback.apply(Tuple0.INSTANCE);
307 public static Object possibleFromDynamic(Type expectedType, String moduleName, Object value) {
312 Failable<Module> failable = SCLOsgi.MODULE_REPOSITORY.getModule(moduleName);
313 Module module = failable.getResult();
315 RuntimeEnvironment env = SCLOsgi.MODULE_REPOSITORY.createRuntimeEnvironment(
316 EnvironmentSpecification.of(moduleName, ""), module.getParentClassLoader());
318 JavaTypeTranslator tr = new JavaTypeTranslator(env.getEnvironment());
319 TypeDesc desc = tr.toTypeDesc(expectedType);
320 String className = desc.getFullName();
321 Class<?> clazz = env.getMutableClassLoader().loadClass(className);
322 if (!clazz.isAssignableFrom(value.getClass()))
325 } catch (ImportFailureException | ClassNotFoundException e) {