bundles/org.simantics.document.server/src/org/simantics/document/server/request/ServerSCLValueRequest.java

   1 package org.simantics.document.server.request;
   2
   3 import java.util.Map;
   4
   5 import org.simantics.databoard.Bindings;
   6 import org.simantics.db.ReadGraph;
   7 import org.simantics.db.Resource;
   8 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
   9 import org.simantics.db.common.request.IndexRoot;
  10 import org.simantics.db.common.request.PossibleTypedParent;
  11 import org.simantics.db.common.request.UnaryRead;
  12 import org.simantics.db.exception.DatabaseException;
  13 import org.simantics.db.layer0.scl.AbstractExpressionCompilationContext;
  14 import org.simantics.db.layer0.scl.AbstractExpressionCompilationRequest;
  15 import org.simantics.db.layer0.util.RuntimeEnvironmentRequest2;
  16 import org.simantics.db.layer0.variable.Variable;
  17 import org.simantics.document.base.ontology.DocumentationResource;
  18 import org.simantics.document.server.request.ServerSCLValueRequest.CompilationContext;
  19 import org.simantics.layer0.Layer0;
  20 import org.simantics.scl.compiler.common.names.Name;
  21 import org.simantics.scl.compiler.constants.StringConstant;
  22 import org.simantics.scl.compiler.elaboration.expressions.EApply;
  23 import org.simantics.scl.compiler.elaboration.expressions.EConstant;
  24 import org.simantics.scl.compiler.elaboration.expressions.ELiteral;
  25 import org.simantics.scl.compiler.elaboration.expressions.EVariable;
  26 import org.simantics.scl.compiler.elaboration.expressions.Expression;
  27 import org.simantics.scl.compiler.elaboration.modules.SCLValue;
  28 import org.simantics.scl.compiler.environment.Environment;
  29 import org.simantics.scl.compiler.environment.Environments;
  30 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;
  31 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
  32 import org.simantics.scl.compiler.top.SCLExpressionCompilationException;
  33 import org.simantics.scl.compiler.types.Type;
  34 import org.simantics.scl.compiler.types.Types;
  35 import org.simantics.scl.compiler.types.kinds.Kinds;
  36 import org.simantics.scl.runtime.SCLContext;
  37 import org.simantics.scl.runtime.function.Function1;
  38 import org.simantics.structural2.scl.ComponentTypeProperty;
  39 import org.simantics.structural2.scl.FindPossibleComponentTypeRequest;
  40 import org.simantics.structural2.scl.ReadComponentTypeInterfaceRequest;
  41 import org.simantics.utils.datastructures.Pair;
  42 import org.slf4j.Logger;
  43 import org.slf4j.LoggerFactory;
  44
  45 public class ServerSCLValueRequest extends AbstractExpressionCompilationRequest<CompilationContext, Object> {
  46
  47         private final Pair<Resource,Resource> componentTypeAndRoot;
  48         private final Resource literal;
  49     protected String possibleExpectedValueType;
  50
  51         public static class CompilationContext extends AbstractExpressionCompilationContext {
  52                 public final Map<String, ComponentTypeProperty> propertyMap;
  53
  54                 public CompilationContext(RuntimeEnvironment runtimeEnvironment,
  55                                 Map<String, ComponentTypeProperty> propertyMap) {
  56                         super(runtimeEnvironment);
  57                         this.propertyMap = propertyMap;
  58                 }
  59         }
  60
  61         private ServerSCLValueRequest(Pair<Resource,Resource> componentTypeAndRoot, Resource literal, String possibleExpectedValueType) {
  62                 assert(literal != null);
  63                 this.literal = literal;
  64                 this.componentTypeAndRoot = componentTypeAndRoot;
  65                 this.possibleExpectedValueType = possibleExpectedValueType;
  66         }
  67
  68         public ServerSCLValueRequest(ReadGraph graph, Variable context) throws DatabaseException {
  69                 this(getComponentTypeAndRoot(graph, context), context.getRepresents(graph), resolveExpectedValueType(graph, context.getPredicateResource(graph)));
  70         }
  71
  72         public ServerSCLValueRequest(ReadGraph graph, Resource s, Resource o, Resource p) throws DatabaseException {
  73             this(getComponentTypeAndRoot(graph, s), o, resolveExpectedValueType(graph, p));
  74         }
  75
  76         private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Variable property)  throws DatabaseException {
  77                 Variable parent = property.getParent(graph);
  78                 Resource represents = parent.getRepresents(graph);
  79                 if(represents != null) {
  80                         Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(represents));
  81                         if(type != null) {
  82                                 Resource root = graph.syncRequest(new IndexRoot(type));
  83                                 return Pair.make(type, root);
  84                         }
  85                 }
  86                 parent = parent.getParent(graph);
  87                 Resource root = graph.syncRequest(new IndexRoot(property.getRepresents(graph)));
  88                 return Pair.make(parent.getType(graph), root);
  89         }
  90
  91         private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Resource component)  throws DatabaseException {
  92                 if(component != null) {
  93                         Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(component));
  94                         if(type != null) {
  95                                 Resource root = graph.syncRequest(new IndexRoot(type));
  96                                 //      System.err.println("getComponentTypeAndRoot3 " + graph.getPossibleURI(component) + " => " + graph.getPossibleURI(type) + " " + graph.getPossibleURI(root));
  97                                 return Pair.make(type, root);
  98                         } else {
  99                                 Resource doc = graph.syncRequest(new PossibleTypedParent(component, DocumentationResource.getInstance(graph).Document));
 100                                 if(doc != null) {
 101                                         Resource componentType = graph.getSingleType(doc);
 102                                         Resource root = graph.syncRequest(new IndexRoot(doc));
 103                                         return Pair.make(componentType, root);
 104                                 } else {
 105                                         System.err.println("component = " + component);
 106                                         Resource root = graph.syncRequest(new IndexRoot(component));
 107 //                                      Resource componentType = graph.getSingleType(doc);
 108                                         return Pair.make(null, root);
 109                                 }
 110                         }
 111                 }
 112                 throw new IllegalStateException();
 113         }
 114
 115         public static Object compileAndEvaluate(ReadGraph graph, Variable context) throws DatabaseException {
 116                 SCLContext sclContext = SCLContext.getCurrent();
 117         Object oldGraph = sclContext.get("graph");
 118                 try {
 119                         Function1<Object,Object> exp = compile(graph, context);
 120                         sclContext.put("graph", graph);
 121                         return exp.apply(context);
 122                 } catch (DatabaseException e) {
 123                         throw (DatabaseException)e;
 124                 } catch (Throwable t) {
 125                         throw new DatabaseException(t);
 126                 } finally {
 127             sclContext.put("graph", oldGraph);
 128                 }
 129         }
 130
 131         public static Function1<Object, Object> compile(ReadGraph graph, Variable context) throws DatabaseException {
 132                 return graph.syncRequest(new ServerSCLValueRequest(graph, context), TransientCacheListener.instance());
 133         }
 134
 135         public static Function1<Object, Object> compile(ReadGraph graph, Resource s, Resource o, Resource p) throws DatabaseException {
 136                 return graph.syncRequest(new ServerSCLValueRequest(graph, s, o, p), TransientCacheListener.instance());
 137         }
 138
 139         @Override
 140         protected String getExpressionText(ReadGraph graph)
 141                         throws DatabaseException {
 142                 Layer0 L0 = Layer0.getInstance(graph);
 143                 return graph.getRelatedValue(literal, L0.SCLValue_expression, Bindings.STRING);
 144         }
 145
 146         protected RuntimeEnvironmentRequest2 getRuntimeEnvironmentRequest(Resource componentType, Resource indexRoot) {
 147                 return new RuntimeEnvironmentRequest2(componentType, indexRoot) {
 148                         @Override
 149                         protected void fillEnvironmentSpecification(
 150                                         EnvironmentSpecification environmentSpecification) {
 151                         }
 152                 };
 153         }
 154
 155         @Override
 156         protected CompilationContext getCompilationContext(ReadGraph graph)
 157                         throws DatabaseException {
 158                 return graph.syncRequest(new UnaryRead<Pair<Resource,Resource>,CompilationContext>(componentTypeAndRoot) {
 159                         @Override
 160                         public CompilationContext perform(ReadGraph graph)
 161                                         throws DatabaseException {
 162                                 RuntimeEnvironment runtimeEnvironment = graph.syncRequest(getRuntimeEnvironmentRequest(parameter.first, parameter.second));
 163                                 Map<String, ComponentTypeProperty> propertyMap =
 164                                                 graph.syncRequest(new ReadComponentTypeInterfaceRequest(parameter.first, runtimeEnvironment.getEnvironment()),
 165                                                                 TransientCacheListener.<Map<String, ComponentTypeProperty>>instance());
 166                                 return new CompilationContext(runtimeEnvironment, propertyMap);
 167                         }
 168                 });
 169         }
 170
 171         @Override
 172         protected Type getContextVariableType() {
 173                 return VARIABLE;
 174         }
 175
 176         private static Expression accessInputVariable(Environment environment,
 177                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable) {
 178                 SCLValue variableParentFunction = environment.getValue(VARIABLE_PARENT);
 179                 return new EApply(new EConstant(variableParentFunction),
 180                                 new EApply(new EConstant(variableParentFunction),
 181                                                 new EVariable(contextVariable)));
 182         }
 183
 184     protected static Name PROPERTY_VALUE_CACHED = Name.create("Document/All", "propertyValueCached");
 185
 186     protected static Expression getProperty(Environment environment, Expression variable, String propertyName, Type type) {
 187         return new EApply(
 188                 new EConstant(environment.getValue(FROM_DYNAMIC), type),
 189                 new EApply(
 190                         new EConstant(environment.getValue(PROPERTY_VALUE_CACHED), Types.DYNAMIC),
 191                         variable,
 192                         new ELiteral(new StringConstant(propertyName))));
 193     }
 194
 195     protected static Expression getPropertyFlexible(Environment environment, Expression variable, String propertyName, Type type) {
 196         return makeTypeFlexible(environment, getProperty(environment, variable, propertyName, type), type);
 197     }
 198
 199         protected static Expression standardGetProperty(
 200                         Environment environment,
 201                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 202                         String name,
 203                         Type type) {
 204                 return getPropertyFlexible(environment, accessInputVariable(environment, contextVariable), name, type);
 205         }
 206
 207
 208         @Override
 209         protected Expression getVariableAccessExpression(
 210                         ReadGraph graph,
 211                         CompilationContext context,
 212                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 213                         String name) throws DatabaseException {
 214                 ComponentTypeProperty property = context.propertyMap.get(name);
 215                 if(property != null)
 216                         return standardGetProperty(
 217                                         context.runtimeEnvironment.getEnvironment(),
 218                                         contextVariable,
 219                                         name,
 220                                         property.type == null ? Types.metaVar(Kinds.STAR) : property.type);
 221                 else
 222                         return getSpecialVariableAccessExpression(graph, context, contextVariable, name);
 223         }
 224
 225         protected Expression getSpecialVariableAccessExpression(ReadGraph graph,
 226                         CompilationContext context,
 227                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 228                         String name) throws DatabaseException {
 229                 if(name.equals("input")) {
 230                         Environment environment = context.runtimeEnvironment.getEnvironment();
 231                         return accessInputVariable(environment, contextVariable);
 232                 }
 233                 else if(name.equals("self"))
 234                         return new EVariable(contextVariable);
 235                 else
 236                         return null;
 237         }
 238
 239     @Override
 240     protected Type getExpectedType(ReadGraph graph, CompilationContext context) throws DatabaseException {
 241         return super.getExpectedType(graph, context);
 242     }
 243
 244
 245         @Override
 246         public int hashCode() {
 247                 return 31*(31*getClass().hashCode() + literal.hashCode()) + componentTypeAndRoot.hashCode();
 248         }
 249
 250         @Override
 251         public boolean equals(Object obj) {
 252                 if(this == obj)
 253                         return true;
 254                 if(obj == null || obj.getClass() != getClass())
 255                         return false;
 256                 ServerSCLValueRequest other = (ServerSCLValueRequest)obj;
 257                 return literal.equals(other.literal) && componentTypeAndRoot.equals(other.componentTypeAndRoot);
 258         }
 259
 260     public static Function1<Object, Object> validate(ReadGraph graph, Variable context) throws DatabaseException {
 261         return graph.syncRequest(new ServerSCLValueValidationRequest(graph, context), TransientCacheListener.instance());
 262     }
 263
 264     public static class ServerSCLValueValidationRequest extends ServerSCLValueRequest {
 265
 266         private static final Logger LOGGER = LoggerFactory.getLogger(ServerSCLHandlerValueRequest.class);
 267
 268         public ServerSCLValueValidationRequest(ReadGraph graph, Variable context) throws DatabaseException {
 269             super(graph, context);
 270         }
 271
 272         @Override
 273         protected Type getExpectedType(ReadGraph graph, CompilationContext context) throws DatabaseException {
 274             if(possibleExpectedValueType != null) {
 275                 try {
 276                     return Environments.getType(context.runtimeEnvironment.getEnvironment(), possibleExpectedValueType);
 277                 } catch (SCLExpressionCompilationException e) {
 278                     LOGGER.error("Could not get type for " + String.valueOf(possibleExpectedValueType), e);
 279                 }
 280             }
 281             return super.getExpectedType(graph, context);
 282         }
 283     }
 284 }