bundles/org.simantics.modeling/src/org/simantics/modeling/scl/GraphModuleSourceRepository.java

   1 package org.simantics.modeling.scl;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5
   6 import org.simantics.Simantics;
   7 import org.simantics.db.ReadGraph;
   8 import org.simantics.db.Resource;
   9 import org.simantics.db.WriteGraph;
  10 import org.simantics.db.common.request.UnaryRead;
  11 import org.simantics.db.common.request.WriteRequest;
  12 import org.simantics.db.exception.DatabaseException;
  13 import org.simantics.db.procedure.SyncListener;
  14 import org.simantics.db.request.Read;
  15 import org.simantics.layer0.Layer0;
  16 import org.simantics.modeling.ModelingUtils;
  17 import org.simantics.modeling.internal.Activator;
  18 import org.simantics.scl.compiler.internal.codegen.types.JavaReferenceValidatorFactory;
  19 import org.simantics.scl.compiler.module.repository.UpdateListener;
  20 import org.simantics.scl.compiler.module.repository.UpdateListener.Observable;
  21 import org.simantics.scl.compiler.source.ModuleSource;
  22 import org.simantics.scl.compiler.source.StringModuleSource;
  23 import org.simantics.scl.compiler.source.repository.ModuleSourceRepository;
  24 import org.simantics.scl.osgi.internal.OsgiJavaReferenceValidatorFactory;
  25 import org.simantics.scl.runtime.SCLContext;
  26 import org.simantics.scl.runtime.tuple.Tuple0;
  27 import org.simantics.structural2.utils.StructuralUtils;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 import gnu.trove.procedure.TObjectProcedure;
  32 import gnu.trove.set.hash.THashSet;
  33
  34 public enum GraphModuleSourceRepository implements ModuleSourceRepository {
  35     INSTANCE;
  36
  37     private static final Logger LOGGER = LoggerFactory.getLogger(OntologyModuleSourceRepository.class);
  38
  39     private static final OsgiJavaReferenceValidatorFactory REFERENCE_VALIDATOR_FACTORY = new OsgiJavaReferenceValidatorFactory(Activator.getContext().getBundle());
  40
  41     @Override
  42     public ModuleSource getModuleSource(final String moduleName, UpdateListener listener) {
  43         if(!moduleName.startsWith("http://"))
  44             return null; // Don't do a graph request if this cannot be a resource
  45
  46         Read<ModuleSource> request = new ReadModuleSource(moduleName);
  47
  48         try {
  49             if(listener != null)
  50                 return Simantics.getAvailableRequestProcessor().syncRequest(request, new ModuleListener(listener, moduleName));
  51             else
  52                 return Simantics.getAvailableRequestProcessor().syncRequest(request);
  53         } catch (DatabaseException e) {
  54             LOGGER.error("Failed to read graph module " + moduleName + ".", e);
  55             return null;
  56         }
  57     }
  58
  59     static class ModuleListener implements SyncListener<ModuleSource>, Observable {
  60         UpdateListener listener;
  61         boolean alreadyExecutedOnce;
  62         final String moduleName;
  63         public ModuleListener(UpdateListener listener, String moduleName) {
  64             this.listener = listener;
  65             this.listener.addObservable(this);
  66             this.moduleName = moduleName;
  67         }
  68         @Override
  69         public void removeListener(UpdateListener listener) {
  70             this.listener = null;
  71         }
  72         @Override
  73         public boolean isDisposed() {
  74             return listener == null;
  75         }
  76         private void fireUpdate(ReadGraph graph) {
  77             if(listener != null) {
  78                 SCLContext context = SCLContext.getCurrent();
  79                 Object oldGraph = context.put("graph", graph);
  80                 try {
  81                     listener.notifyAboutUpdate();
  82                 } finally {
  83                     listener = null;
  84                     context.put("graph", oldGraph);
  85                 }
  86             }
  87         }
  88         @Override
  89         public void execute(ReadGraph graph, ModuleSource result)
  90                 throws DatabaseException {
  91             if(alreadyExecutedOnce)
  92                 fireUpdate(graph);
  93             else
  94                 alreadyExecutedOnce = true;
  95         }
  96         @Override
  97         public void exception(ReadGraph graph, Throwable t)
  98                 throws DatabaseException {
  99             t.printStackTrace();
 100             if(alreadyExecutedOnce && listener != null)
 101                 fireUpdate(graph);
 102         }
 103     };
 104
 105     public static class GraphModuleSource extends StringModuleSource {
 106
 107         private final boolean immutable;
 108
 109         public GraphModuleSource(String moduleName, ClassLoader classLoader, String moduleText, boolean immutable) {
 110             super(moduleName, classLoader, moduleText);
 111             this.immutable = immutable;
 112         }
 113
 114         @Override
 115         public boolean isUpdateable() {
 116             return !immutable;
 117         }
 118
 119         @Override
 120         public void update(String newSourceText) {
 121             try {
 122                 Simantics.getSession().syncRequest(new WriteModuleSource(getModuleName(), newSourceText));
 123             } catch (DatabaseException e) {
 124                 e.printStackTrace();
 125             }
 126         }
 127
 128         @Override
 129         public JavaReferenceValidatorFactory getJavaReferenceValidatorFactory() {
 130             return REFERENCE_VALIDATOR_FACTORY;
 131         }
 132     }
 133
 134     static class ReadModuleSource extends UnaryRead<String, ModuleSource> {
 135         public ReadModuleSource(String moduleName) {
 136             super(moduleName);
 137         }
 138
 139         @Override
 140         public ModuleSource perform(ReadGraph graph) throws DatabaseException {
 141             Resource moduleResource = graph.getPossibleResource(parameter);
 142             if(moduleResource == null)
 143                 return null;
 144             Layer0 L0 = Layer0.getInstance(graph);
 145             if(!graph.isInstanceOf(moduleResource, L0.SCLModule))
 146                 return null;
 147             String text = graph.getRelatedValue(moduleResource, L0.SCLModule_definition);
 148             boolean immutable = StructuralUtils.isImmutable(graph, moduleResource);
 149             return new GraphModuleSource(parameter, getClass().getClassLoader(), text, immutable);
 150         }
 151     }
 152
 153     static class WriteModuleSource extends WriteRequest {
 154         private final String moduleURI;
 155         private final String sourceText;
 156
 157         public WriteModuleSource(String moduleURI, String sourceText) {
 158             this.moduleURI = moduleURI;
 159             this.sourceText = sourceText;
 160         }
 161
 162         @Override
 163         public void perform(WriteGraph graph) throws DatabaseException {
 164             Resource moduleResource = graph.getPossibleResource(moduleURI);
 165             if(moduleResource == null)
 166                 return;
 167             Layer0 L0 = Layer0.getInstance(graph);
 168             if(!graph.isInstanceOf(moduleResource, L0.SCLModule))
 169                 return;
 170             graph.claimLiteral(moduleResource, L0.SCLModule_definition, sourceText);
 171         }
 172     }
 173
 174     private THashSet<String> getAllModules(ReadGraph graph) throws DatabaseException {
 175         THashSet<String> result = new THashSet<String>();
 176         Resource projectResource = Simantics.getProjectResource();
 177         Layer0 L0 = Layer0.getInstance(graph);
 178         for(Resource model : graph.getObjects(projectResource, L0.ConsistsOf)) {
 179             if(graph.isInstanceOf(model, L0.IndexRoot)) {
 180                 for(Resource module : ModelingUtils.searchByType(graph, model, L0.SCLModule))
 181                     result.add(graph.getURI(module));
 182             }
 183         }
 184
 185         Collection<Resource> ontologies = Simantics.applySCL("Simantics/SharedOntologies", "getSharedOntologies", graph, Tuple0.INSTANCE);
 186         for (Resource ontology : ontologies) {
 187             for(Resource module : ModelingUtils.searchByType(graph, ontology, L0.SCLModule))
 188                 try {
 189                     result.add(graph.getURI(module));
 190                 } catch(DatabaseException e) {
 191                     LOGGER.error("Failed to find uri for " + module + ".");
 192                 }
 193         }
 194
 195         return result;
 196     }
 197
 198     @Override
 199     public void forAllModules(TObjectProcedure<String> procedure) {
 200         try {
 201             THashSet<String> moduleURIs = Simantics.getAvailableRequestProcessor().syncRequest(new Read<THashSet<String>>() {
 202                 @Override
 203                 public THashSet<String> perform(ReadGraph graph)
 204                         throws DatabaseException {
 205                     return getAllModules(graph);
 206                 }
 207             });
 208             moduleURIs.forEach(procedure);
 209         } catch (DatabaseException e) {
 210             e.printStackTrace();
 211         }
 212     }
 213
 214     @Override
 215     public Collection<String> getModuleNames() {
 216         ArrayList<String> result = new ArrayList<>();
 217         forAllModules((String name) -> {
 218             result.add(name);
 219             return true;
 220         });
 221         return result;
 222     }
 223 }