Merge branch 'rest' into 'master'

Rest

Closes #24

See merge request jastadd/ros2rag!5

.gitignore

@@ -5,3 +5,4 @@
 .classpath
 .idea/
 .gradle/
+build/

ragconnect.base/build.gradle

@@ -69,19 +69,12 @@ task relast(type: JavaExec) {
     group = 'Build'
     main = "-jar"
 
-    doFirst {
-        delete "src/gen/jastadd/*.ast"
-        delete "src/gen/jastadd/RagConnect.jadd"
-        delete "src/gen/jastadd/RagConnectRefResolver.jadd"
-        delete "src/gen/jastadd/RagConnectResolverStubs.jrag"
-        mkdir  "src/gen/jastadd/"
-    }
-
     args = [
             "../libs/relast.jar",
             "../relast.preprocessor/src/main/jastadd/RelAst.relast",
             "./src/main/jastadd/RagConnect.relast",
             "./src/main/jastadd/MustacheNodes.relast",
+            "./src/main/jastadd/YAML.relast",
             "--listClass=java.util.ArrayList",
             "--jastAddList=JastAddList",
             "--useJastAddNames",
@@ -90,14 +83,15 @@ task relast(type: JavaExec) {
             "--grammarName=./src/gen/jastadd/RagConnect"
     ]
 
-    inputs.files file("../libs/relast.jar"),
-            file("../relast.preprocessor/src/main/jastadd/RelAST.relast"),
-            file("./src/main/jastadd/RagConnect.relast")
-            file("./src/main/jastadd/MustacheNodes.relast")
-    outputs.files file("./src/gen/jastadd/RagConnect.ast"),
-            file("./src/gen/jastadd/RagConnect.jadd"),
-            file("./src/gen/jastadd/RagConnectRefResolver.jadd"),
-            file('./src/gen/jastadd/RagConnectResolverStubs.jrag')
+    inputs.files("../libs/relast.jar",
+            "../relast.preprocessor/src/main/jastadd/RelAst.relast",
+            "./src/main/jastadd/RagConnect.relast",
+            "./src/main/jastadd/MustacheNodes.relast",
+            "./src/main/jastadd/YAML.relast")
+    outputs.files("./src/gen/jastadd/RagConnect.ast",
+            "./src/gen/jastadd/RagConnect.jadd",
+            "./src/gen/jastadd/RagConnectRefResolver.jadd",
+            './src/gen/jastadd/RagConnectResolverStubs.jrag')
 }
 
 jastadd {

ragconnect.base/src/main/jastadd/Analysis.jrag

 aspect Analysis {
   // --- lookupTokenEndpointDefinition ---
-  inh TokenEndpointDefinition TokenEndpointDefinition.lookupTokenEndpointDefinition(TokenComponent token);
-  eq RagConnect.getEndpointDefinition().lookupTokenEndpointDefinition(TokenComponent token) {
+  inh java.util.List<TokenEndpointDefinition> TokenEndpointDefinition.lookupTokenEndpointDefinitions(TokenComponent token);
+  eq RagConnect.getEndpointDefinition().lookupTokenEndpointDefinitions(TokenComponent token) = lookupTokenEndpointDefinitions(token);
+  syn java.util.List<TokenEndpointDefinition> RagConnect.lookupTokenEndpointDefinitions(TokenComponent token) {
+    java.util.List<TokenEndpointDefinition> result = new java.util.ArrayList<>();
     for (EndpointDefinition def : getEndpointDefinitionList()) {
       if (def.isTokenEndpointDefinition() && def.asTokenEndpointDefinition().getToken().equals(token)) {
-        return def.asTokenEndpointDefinition();
+        result.add(def.asTokenEndpointDefinition());
       }
     }
-    return null;
+    return result;
   }
 
   // --- lookupDependencyDefinition ---
@@ -22,6 +24,34 @@ aspect Analysis {
   }
 
   // --- isAlreadyDefined ---
-  syn boolean TokenEndpointDefinition.isAlreadyDefined() = lookupTokenEndpointDefinition(getToken()) != this;
+  syn boolean TokenEndpointDefinition.isAlreadyDefined() = lookupTokenEndpointDefinitions(getToken()).size() > 1;
   syn boolean DependencyDefinition.isAlreadyDefined() = lookupDependencyDefinition(getSource().containingTypeDecl(), getID()) != this;
+
+  syn boolean MappingDefinitionType.assignableTo(JavaTypeUse target);
+  eq JavaMappingDefinitionType.assignableTo(JavaTypeUse target) = getType().assignableTo(target);
+  eq JavaArrayMappingDefinitionType.assignableTo(JavaTypeUse target) {
+    if (!target.getName().endsWith("[]")) { return false; }
+    return getType().assignableTo(new SimpleJavaTypeUse(target.getName().replace("[]", "")));
+  }
+  syn boolean JavaTypeUse.assignableTo(JavaTypeUse target) {
+    // target var = this;
+    return target.primitivePrettyPrint().equals(this.primitivePrettyPrint());
+  }
+  syn String JavaTypeUse.primitivePrettyPrint() {
+    switch(getName()) {
+      case "int":
+      case "Integer": return "int";
+      case "short":
+      case "Short": return "short";
+      case "long":
+      case "Long": return "long";
+      case "float":
+      case "Float": return "float";
+      case "double":
+      case "Double": return "double";
+      case "char":
+      case "Character": return "char";
+      default: return getName();
+    }
+  }
 }

ragconnect.base/src/main/jastadd/Errors.jrag

@@ -7,32 +7,32 @@ aspect Errors {
     [new TreeSet<ErrorMessage>()]
     root RagConnect;
 
-    ReceiveFromMqttDefinition contributes error("Receive definition already defined for " + getToken().getName())
+    ReceiveTokenEndpointDefinition contributes error("Receive definition already defined for " + getToken().getName())
       when isAlreadyDefined()
       to RagConnect.errors();
 
-    ReceiveFromMqttDefinition contributes error("Receiving target token must not be an NTA token!")
+    ReceiveTokenEndpointDefinition contributes error("Receiving target token must not be an NTA token!")
       when getToken().getNTA()
       to RagConnect.errors();
 
     // if first mapping is null, then suitableDefaultMapping() == null
-    ReceiveFromMqttDefinition contributes error("No suitable default mapping found for type " +
+    ReceiveTokenEndpointDefinition contributes error("No suitable default mapping found for type " +
       ((getMappingList().isEmpty())
-        ? getToken().getJavaTypeUse().prettyPrint()
+        ? getToken().effectiveJavaTypeUse().prettyPrint()
         : getMappingList().get(0).getFromType().prettyPrint()))
       when effectiveMappings().get(0) == null
       to RagConnect.errors();
 
-    ReceiveFromMqttDefinition contributes error("to-type of last mapping must be type of the Token!")
-      when getToken().getJavaTypeUse().prettyPrint().equals(
-          effectiveMappings().get(effectiveMappings().size() - 1))
+    ReceiveTokenEndpointDefinition contributes error("to-type of last mapping (" + effectiveMappings().get(effectiveMappings().size() - 1).getToType().prettyPrint() + ") not assignable to type of the Token (" + getToken().effectiveJavaTypeUse().prettyPrint() + ")!")
+      when !effectiveMappings().get(effectiveMappings().size() - 1).getToType().assignableTo(
+          getToken().effectiveJavaTypeUse())
       to RagConnect.errors();
 
-    SendToMqttDefinition contributes error("Sending target token must be an NTA token!")
+    SendTokenEndpointDefinition contributes error("Sending target token must be an NTA token!")
       when !getToken().getNTA()
       to RagConnect.errors();
 
-    SendToMqttDefinition contributes error("Send definition already defined for " + getToken().getName())
+    SendTokenEndpointDefinition contributes error("Send definition already defined for " + getToken().getName())
       when isAlreadyDefined()
       to RagConnect.errors();
 
@@ -44,7 +44,7 @@ aspect Errors {
       when isAlreadyDefinedAsList()
       to RagConnect.errors();
 
-    DependencyDefinition contributes error("There must be a send update definition targeting " + getSource().parentTypeypeAndName() + " for dependency definition " + getID())
+    DependencyDefinition contributes error("There must be a send endpoint definition targeting " + getSource().parentTypeypeAndName() + " for dependency definition " + getID())
       when targetEndpointDefinition() == null
       to RagConnect.errors();
 }

ragconnect.base/src/main/jastadd/MustacheNodes.relast

-//TypeComponentMustache ;
-//rel TypeComponentMustache.TypeComponent -> TypeComponent ;
-
 MRagConnect ::= ReceiveDefinition:MReceiveDefinition* SendDefinition:MSendDefinition* MappingDefinition:MMappingDefinition* DependencyDefinition:MDependencyDefinition* RootTypeComponent:MTypeComponent* TokenComponent:MTokenComponent*;
 abstract MEndpointDefinition ::= InnerMappingDefinition:MInnerMappingDefinition*;
 MReceiveDefinition : MEndpointDefinition;
@@ -12,9 +9,9 @@ MTypeComponent;
 MTokenComponent;
 
 rel MRagConnect.RagConnect -> RagConnect;
-rel MInnerMappingDefinition.MappingDefinition -> MappingDefinition;
-rel MReceiveDefinition.ReceiveFromMqttDefinition -> ReceiveFromMqttDefinition;
-rel MSendDefinition.SendToMqttDefinition -> SendToMqttDefinition;
+rel MInnerMappingDefinition.MMappingDefinition -> MMappingDefinition;
+rel MReceiveDefinition.ReceiveTokenEndpointDefinition -> ReceiveTokenEndpointDefinition;
+rel MSendDefinition.SendTokenEndpointDefinition -> SendTokenEndpointDefinition;
 rel MMappingDefinition.MappingDefinition -> MappingDefinition;
 rel MDependencyDefinition.DependencyDefinition -> DependencyDefinition;
 rel MTypeComponent.TypeComponent -> TypeComponent;

ragconnect.base/src/main/jastadd/Navigation.jrag

@@ -10,9 +10,12 @@ aspect Navigation {
   eq MRagConnect.getChild().ragconnect() = getRagConnect();
 
   // --- containedFile
+  eq Grammar.getChild().containedFile() = null;
   eq RagConnect.getChild().containedFile() = null;
+  eq MRagConnect.getChild().containedFile() = null;
 
   // --- containedFileName ---
+  eq Grammar.getChild().containedFileName() = null;  // should be in PP
   eq RagConnect.getChild().containedFileName() = getFileName();
   eq MRagConnect.getChild().containedFileName() = null;
 
@@ -24,30 +27,33 @@ aspect Navigation {
   syn TokenEndpointDefinition EndpointDefinition.asTokenEndpointDefinition() = null;
   eq TokenEndpointDefinition.asTokenEndpointDefinition() = this;
 
-  // --- isSendToMqttDefinition ---
-  syn boolean EndpointDefinition.isSendToMqttDefinition() = false;
-  eq SendToMqttDefinition.isSendToMqttDefinition() = true;
+  // --- isSendTokenEndpointDefinition ---
+  syn boolean EndpointDefinition.isSendTokenEndpointDefinition() = false;
+  eq SendTokenEndpointDefinition.isSendTokenEndpointDefinition() = true;
 
-  // --- asSendToMqttDefinition ---
-  syn SendToMqttDefinition EndpointDefinition.asSendToMqttDefinition() = null;
-  eq SendToMqttDefinition.asSendToMqttDefinition() = this;
+  // --- asSendTokenEndpointDefinition ---
+  syn SendTokenEndpointDefinition EndpointDefinition.asSendTokenEndpointDefinition() = null;
+  eq SendTokenEndpointDefinition.asSendTokenEndpointDefinition() = this;
 
-  // --- asReceiveFromMqttDefinition ---
-  syn ReceiveFromMqttDefinition EndpointDefinition.asReceiveFromMqttDefinition() = null;
-  eq ReceiveFromMqttDefinition.asReceiveFromMqttDefinition() = this;
+  // --- asReceiveTokenEndpointDefinition ---
+  syn ReceiveTokenEndpointDefinition EndpointDefinition.asReceiveTokenEndpointDefinition() = null;
+  eq ReceiveTokenEndpointDefinition.asReceiveTokenEndpointDefinition() = this;
 
   // --- targetEndpointDefinition ---
-  syn SendToMqttDefinition DependencyDefinition.targetEndpointDefinition() {
+  syn SendTokenEndpointDefinition DependencyDefinition.targetEndpointDefinition() {
     // resolve definition in here, as we do not need resolveMethod in any other place (yet)
     for (EndpointDefinition endpointDefinition : ragconnect().getEndpointDefinitionList()) {
-      if (endpointDefinition.isSendToMqttDefinition() &&
-          endpointDefinition.asSendToMqttDefinition().getToken().equals(this.getTarget())) {
-        return endpointDefinition.asSendToMqttDefinition();
+      if (endpointDefinition.isSendTokenEndpointDefinition() &&
+          endpointDefinition.asSendTokenEndpointDefinition().getToken().equals(this.getTarget())) {
+        return endpointDefinition.asSendTokenEndpointDefinition();
       }
     }
     return null;
   }
 
+  // --- effectiveJavaTypeUse (should be in preprocessor) ---
+  syn lazy JavaTypeUse TokenComponent.effectiveJavaTypeUse() = hasJavaTypeUse() ? getJavaTypeUse() : new SimpleJavaTypeUse("String");
+
   // --- isDefaultMappingDefinition ---
   syn boolean MappingDefinition.isDefaultMappingDefinition() = false;
   eq DefaultMappingDefinition.isDefaultMappingDefinition() = true;

ragconnect.base/src/main/jastadd/Printing.jrag

+aspect Printing {
+  String ASTNode.PRINT_INDENT = "  ";
+
+  syn String MappingDefinitionType.prettyPrint();
+  eq JavaMappingDefinitionType.prettyPrint() = getType().getName();
+  eq JavaArrayMappingDefinitionType.prettyPrint() = getType().getName() + "[]";
+
+  syn String JavaTypeUse.prettyPrint() {
+    StringBuilder sb = new StringBuilder();
+    generateAbstractGrammar(sb);
+    return sb.toString();
+  }
+
+  syn String Document.prettyPrint() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("# RagConnect created at ").append(java.time.Instant.now()).append("\n");
+    for (ComplexElement element : getComplexElementList()) {
+      element.prettyPrint(sb, false, "");
+    }
+    if (sb.charAt(sb.length() - 1) != '\n') {
+      sb.append("\n");
+    }
+    return sb.toString();
+  }
+  syn StringBuilder Element.prettyPrint(StringBuilder sb, boolean printIndent, String indent);
+  eq ValueElement.prettyPrint(StringBuilder sb, boolean printIndent, String indent) {
+    sb.append(getValue());
+    return sb;
+  }
+  eq StringElement.prettyPrint(StringBuilder sb, boolean printIndent, String indent) {
+    sb.append("\"").append(getValue()).append("\"");
+    return sb;
+  }
+  eq ListElement.prettyPrint(StringBuilder sb, boolean printIndent, String indent) {
+    if (isEmpty()) {
+      sb.append("[]");
+    } else {
+      for (Element element : getElementList()) {
+        sb.append(indent).append("- ");
+        element.prettyPrint(sb, false, indent + PRINT_INDENT);
+        sb.append("\n");
+      }
+      // delete last newline
+      sb.deleteCharAt(sb.length() - 1);
+    }
+    return sb;
+  }
+  eq KeyValuePair.prettyPrint(StringBuilder sb, boolean printIndent, String indent) {
+    if (printIndent) sb.append(indent);
+    sb.append(getKey()).append(": ");
+    if (getValue().isComplex() && !getValue().isEmpty()) {
+      sb.append("\n");
+      getValue().prettyPrint(sb, true, indent + PRINT_INDENT);  //);
+    } else {
+      getValue().prettyPrint(sb, false, indent);
+    }
+    return sb;
+  }
+  eq MappingElement.prettyPrint(StringBuilder sb, boolean printIndent, String indent) {
+    if (isEmpty()) {
+      sb.append("{}");
+    } else {
+      boolean first = true;
+      for (KeyValuePair pair : getKeyValuePairList()) {
+        if (!first || printIndent) sb.append(indent);
+        first = false;
+        pair.prettyPrint(sb, false, indent);  // + PRINT_INDENT
+        sb.append("\n");
+      }
+      // delete last newline
+      sb.deleteCharAt(sb.length() - 1);
+    }
+    return sb;
+  }
+}

ragconnect.base/src/main/jastadd/RagConnect.relast

@@ -2,13 +2,13 @@ RagConnect ::= EndpointDefinition* DependencyDefinition* MappingDefinition* Prog
 
 abstract EndpointDefinition ::= <AlwaysApply:boolean> ;
 
-rel EndpointDefinition.Mapping* -> MappingDefinition;
+rel EndpointDefinition.Mapping* <-> MappingDefinition.UsedAt*;
 
 abstract TokenEndpointDefinition : EndpointDefinition;
 rel TokenEndpointDefinition.Token -> TokenComponent;
 
-ReceiveFromMqttDefinition : TokenEndpointDefinition;
-SendToMqttDefinition  : TokenEndpointDefinition;
+ReceiveTokenEndpointDefinition : TokenEndpointDefinition;
+SendTokenEndpointDefinition : TokenEndpointDefinition;
 
 DependencyDefinition ::= <ID>;
 rel DependencyDefinition.Source <-> TokenComponent.DependencySourceDefinition*;

ragconnect.base/src/main/jastadd/Util.jadd

+aspect Util {
+  static String ASTNode.capitalize(String s) {
+    return Character.toUpperCase(s.charAt(0)) + s.substring(1);
+  }
+}

ragconnect.base/src/main/jastadd/YAML.jrag

+aspect Navigation {
+  eq Document.getChild().program() = null;
+  eq Document.getChild().ragconnect() = null;
+  eq Document.getChild().containedFile() = null;
+  eq Document.getChild().containedFileName() = getFileName();
+
+  syn boolean Element.isComplex() = false;
+  eq ComplexElement.isComplex() = true;
+
+  syn boolean Element.isEmpty() = false;
+  eq MappingElement.isEmpty() = getNumKeyValuePair() == 0;
+  eq ListElement.isEmpty() = getNumElement() == 0;
+}
+
+aspect Helper {
+  public static ValueElement ValueElement.of(int value) {
+    return new ValueElement(String.valueOf(value));
+  }
+  public static ValueElement ValueElement.of(boolean value) {
+    return new ValueElement(String.valueOf(value));
+  }
+  public static ValueElement ValueElement.of(String value) {
+    return new ValueElement(value);
+  }
+  public static StringElement StringElement.of(String value) {
+    return new StringElement(value);
+  }
+  public void MappingElement.addKeyValuePair(String key, Element value) {
+    addKeyValuePair(new KeyValuePair(key, value));
+  }
+}

ragconnect.base/src/main/jastadd/YAML.relast

+Document ::= <FileName> ComplexElement* ;
+abstract Element ;
+abstract ComplexElement : Element ;
+MappingElement : ComplexElement ::= KeyValuePair* ;
+KeyValuePair : ComplexElement ::= <Key> Value:Element ;
+ListElement : ComplexElement ::= Element* ;
+abstract SimpleElement : Element ;
+ValueElement : SimpleElement ::= <Value> ;
+StringElement : SimpleElement ::= <Value> ;

ragconnect.base/src/main/jastadd/backend/Configuration.jadd

@@ -2,4 +2,6 @@ aspect Configuration {
   public static boolean ASTNode.loggingEnabledForReads = false;
   public static boolean ASTNode.loggingEnabledForWrites = false;
   public static TypeDecl ASTNode.rootNode;
+  public static boolean ASTNode.usesMqtt;
+  public static boolean ASTNode.usesRest;
 }

ragconnect.base/src/main/jastadd/backend/Generation.jadd

-aspect GenerationUtils {
-  public static final String ASTNode.aspectIndent = "  ";
-
-  public String ASTNode.ind(int n) {
-    StringBuilder s = new StringBuilder();
-    for (int i = 0; i < n; i++) {
-      s.append(aspectIndent);
-    }
-    return s.toString();
-  }
-
-  // --- prettyPrint ---
-  syn String MappingDefinitionType.prettyPrint();
-  eq JavaMappingDefinitionType.prettyPrint() = getType().getName();
-  eq JavaArrayMappingDefinitionType.prettyPrint() = getType().getName() + "[]";
-
-  syn String JavaTypeUse.prettyPrint() {
-    StringBuilder sb = new StringBuilder();
-    generateAbstractGrammar(sb);
-    return sb.toString();
-  }
-}
-
-/* Open questions
-- Should all string constants be defined on the normal AST, or on the special mustache AST?
+/*
+Design considerations
+- InnerMappingDefinition needed for iteration attribute (first, last) - not easily possible with list-relation
 */
 
 aspect AttributesForMustache {
   // --- MRagConnect ---
-  eq MRagConnect.getChild().mqttHandlerAttribute() = mqttHandlerAttribute();
-  eq MRagConnect.getChild().mqttHandlerField() = mqttHandlerField();
   eq MRagConnect.getRootTypeComponent(int i).isFirst() = i == 0;
 
-  syn String MRagConnect.mqttHandlerAttribute() = getRagConnect().mqttHandlerAttribute();
-  syn String MRagConnect.mqttHandlerField() = getRagConnect().mqttHandlerField();
-  syn String MRagConnect.mqttSetHostMethod() = getRagConnect().mqttSetHostMethod();
-  syn String MRagConnect.mqttWaitUntilReadyMethod() = getRagConnect().mqttWaitUntilReadyMethod();
-  syn String MRagConnect.mqttCloseMethod() = getRagConnect().mqttCloseMethod();
+  syn String MRagConnect.closeMethod() = "ragconnectCloseConnections";
+  syn String MRagConnect.mqttHandlerAttribute() = "_mqttHandler";
+  syn String MRagConnect.mqttHandlerField() = "_mqttHandler";
+  syn String MRagConnect.mqttSetupWaitUntilReadyMethod() = "ragconnectSetupMqttWaitUntilReady";
+
+  syn String MRagConnect.restHandlerAttribute() = "_restHandler";
+  syn String MRagConnect.restHandlerField() = "_restHandler";
 
   // --- MEndpointDefinition ---
   syn String MEndpointDefinition.preemptiveExpectedValue();
@@ -44,29 +22,25 @@ aspect AttributesForMustache {
   syn String MEndpointDefinition.firstInputVarName();
 
   eq MEndpointDefinition.getInnerMappingDefinition(int i).isLast() = i == getNumInnerMappingDefinition() - 1;
-  eq MEndpointDefinition.getInnerMappingDefinition().resultVarPrefix() = resultVarPrefix();
-  eq MEndpointDefinition.getInnerMappingDefinition(int i).inputVarName() = i == 0 ? firstInputVarName() : resultVarPrefix() + getInnerMappingDefinition(i - 1).getMappingDefinition().methodName();
-
-  inh String MEndpointDefinition.mqttHandlerAttribute();
+  eq MEndpointDefinition.getInnerMappingDefinition(int i).inputVarName() = i == 0 ? firstInputVarName() : getInnerMappingDefinition(i - 1).outputVarName();
 
-  syn String MEndpointDefinition.connectMethod() = endpointDef().connectMethod();
+  syn String MEndpointDefinition.connectParameterName() = "uriString";
+  syn String MEndpointDefinition.connectMethod() = "connect" + tokenName();
   syn TokenComponent MEndpointDefinition.token() = endpointDef().getToken();
   syn boolean MEndpointDefinition.alwaysApply() = endpointDef().getAlwaysApply();
-  syn String MEndpointDefinition.resultVarPrefix() = "result";  // we do not need "_" here, because methodName begins with one
   syn String MEndpointDefinition.parentTypeName() = token().containingTypeDecl().getName();
   syn String MEndpointDefinition.tokenName() = token().getName();
   syn MInnerMappingDefinition MEndpointDefinition.lastDefinition() = getInnerMappingDefinition(getNumInnerMappingDefinition() - 1);
-  syn String MEndpointDefinition.lastDefinitionToType() = lastDefinition().ToType();
-  syn String MEndpointDefinition.lastDefinitionName() = lastDefinition().methodName();
-  syn String MEndpointDefinition.lastResult() = resultVarPrefix() + lastDefinitionName();
+  syn String MEndpointDefinition.lastDefinitionToType() = lastDefinition().toType();
+  syn String MEndpointDefinition.lastResult() = lastDefinition().outputVarName();
   syn String MEndpointDefinition.condition() {
-    if (lastDefinition().getMappingDefinition().getToType().isArray()) {
+    if (lastDefinition().mappingDef().getToType().isArray()) {
       return "java.util.Arrays.equals(" + preemptiveExpectedValue() + ", " + lastResult() + ")";
     }
-    if (token().isPrimitiveType() && lastDefinition().getMappingDefinition().getToType().isPrimitiveType()) {
+    if (token().isPrimitiveType() && lastDefinition().mappingDef().getToType().isPrimitiveType()) {
       return preemptiveExpectedValue() + " == " + lastResult();
     }
-    if (lastDefinition().getMappingDefinition().isDefaultMappingDefinition()) {
+    if (lastDefinition().mappingDef().isDefaultMappingDefinition()) {
       return preemptiveExpectedValue() + " != null && " + preemptiveExpectedValue() + ".equals(" + lastResult() + ")";
     }
     return preemptiveExpectedValue() + " != null ? " + preemptiveExpectedValue() + ".equals(" + lastResult() + ") : " + lastResult() + " == null";
@@ -74,66 +48,67 @@ aspect AttributesForMustache {
 
   // --- MInnerMappingDefinition ---
   inh boolean MInnerMappingDefinition.isLast();
-  inh String MInnerMappingDefinition.resultVarPrefix();
-  syn String MInnerMappingDefinition.ToType() = getMappingDefinition().getToType().prettyPrint();
-  syn String MInnerMappingDefinition.methodName() = getMappingDefinition().methodName();
   inh String MInnerMappingDefinition.inputVarName();
+  syn String MInnerMappingDefinition.toType() = mappingDef().getToType().prettyPrint();
+  syn String MInnerMappingDefinition.methodName() = getMMappingDefinition().methodName();
+  syn MappingDefinition MInnerMappingDefinition.mappingDef() = getMMappingDefinition().getMappingDefinition();
+  syn String MInnerMappingDefinition.outputVarName() = "result" + methodName();  // we do not need "_" in between here, because methodName begins with one
 
   // --- MReceiveDefinition ---
   eq MReceiveDefinition.preemptiveExpectedValue() = "get" + tokenName() + "()";
   eq MReceiveDefinition.preemptiveReturn() = "return;";
-  eq MReceiveDefinition.endpointDef() = getReceiveFromMqttDefinition();
+  eq MReceiveDefinition.endpointDef() = getReceiveTokenEndpointDefinition();
   eq MReceiveDefinition.firstInputVarName() = "message";
 
   // --- MSendDefinition ---
   eq MSendDefinition.preemptiveExpectedValue() = lastValue();
   eq MSendDefinition.preemptiveReturn() = "return false;";
-  eq MSendDefinition.endpointDef() = getSendToMqttDefinition();
+  eq MSendDefinition.endpointDef() = getSendTokenEndpointDefinition();
   eq MSendDefinition.firstInputVarName() = "get" + tokenName() + "()";
 
-  syn String MSendDefinition.sendTopic() = getSendToMqttDefinition().sendTopic();
-  syn String MSendDefinition.lastValue() = getSendToMqttDefinition().lastValue();
-  syn String MSendDefinition.updateMethod() = getSendToMqttDefinition().updateMethod();
-  syn String MSendDefinition.writeMethod() = getSendToMqttDefinition().writeMethod();
-  syn String MSendDefinition.tokenResetMethod() = getSendToMqttDefinition().tokenResetMethod();
+  syn String MSendDefinition.sender() = "_sender_" + tokenName();
+  syn String MSendDefinition.lastValue() = "_lastValue" + tokenName();
+  syn String MSendDefinition.updateMethod() = "_update_" + tokenName();
+  syn String MSendDefinition.writeMethod() = "_writeLastValue_" + tokenName();
+  syn String MSendDefinition.tokenResetMethod() = "get" + tokenName() + "_reset";
 
   // --- MMappingDefinition ---
   syn String MMappingDefinition.toType() = getMappingDefinition().getToType().prettyPrint();
-  syn String MMappingDefinition.methodName() = getMappingDefinition().methodName();
+  syn String MMappingDefinition.methodName() = "_apply_" + getMappingDefinition().getID();
   syn String MMappingDefinition.fromType() = getMappingDefinition().getFromType().prettyPrint();
   syn String MMappingDefinition.fromVariableName() = getMappingDefinition().getFromVariableName();
   syn String MMappingDefinition.content() = getMappingDefinition().getContent();
 
   // --- MDependencyDefinition ---
   syn String MDependencyDefinition.targetParentTypeName() = getDependencyDefinition().getTarget().containingTypeDecl().getName();
-  syn String MDependencyDefinition.dependencyMethod() = getDependencyDefinition().dependencyMethod();
+  syn String MDependencyDefinition.dependencyMethod() = "add" + capitalize(getDependencyDefinition().getID());
   syn String MDependencyDefinition.sourceParentTypeName() = getDependencyDefinition().getSource().containingTypeDecl().getName();
-  syn String MDependencyDefinition.internalRelationPrefix() = getDependencyDefinition().internalRelationPrefix();
-  syn nta MEndpointDefinition MDependencyDefinition.targetEndpointDefinition() {
+  syn String MDependencyDefinition.internalRelationPrefix() = "_internal_" + getDependencyDefinition().getID();
+  syn nta MSendDefinition MDependencyDefinition.targetEndpointDefinition() {
     return getDependencyDefinition().targetEndpointDefinition().toMustache();
   }
 
   // --- MTypeComponent ---
   syn String MTypeComponent.name() = getTypeComponent().getName();
-  inh String MTypeComponent.mqttHandlerAttribute();
-  inh String MTypeComponent.mqttHandlerField();
   inh boolean MTypeComponent.isFirst();
 
   // --- MTokenComponent ---
   syn String MTokenComponent.parentTypeName() = getTokenComponent().containingTypeDecl().getName();
   syn String MTokenComponent.name() = getTokenComponent().getName();
-  syn String MTokenComponent.javaType() = getTokenComponent().getJavaTypeUse().prettyPrint();
-  syn String MTokenComponent.internalName() = getTokenComponent().internalName();
+  syn String MTokenComponent.javaType() = getTokenComponent().effectiveJavaTypeUse().prettyPrint();
+  syn String MTokenComponent.internalName() = getTokenComponent().getDependencySourceDefinitionList().isEmpty() ? externalName() : "_internal_" + name();
+  syn String MTokenComponent.externalName() = name();
 
   // --- toMustache ---
   syn lazy MRagConnect RagConnect.toMustache() {
     MRagConnect result = new MRagConnect();
     result.setRagConnect(this);
     for (EndpointDefinition def : getEndpointDefinitionList()) {
-      if (def.isSendToMqttDefinition()) {
-        result.addSendDefinition(def.asSendToMqttDefinition().toMustache());
+      if (def.isSendTokenEndpointDefinition()) {
+        SendTokenEndpointDefinition sendDef = def.asSendTokenEndpointDefinition();
+        result.addSendDefinition(sendDef.toMustache());
       } else {
-        result.addReceiveDefinition(def.asReceiveFromMqttDefinition().toMustache());
+        result.addReceiveDefinition(def.asReceiveTokenEndpointDefinition().toMustache());
       }
     }
     for (MappingDefinition def : allMappingDefinitions()) {
@@ -155,41 +130,46 @@ aspect AttributesForMustache {
     return result;
   }
 
-//MInnerMappingDefinition.MappingDefinition -> MappingDefinition;
   protected void MEndpointDefinition.addInnerMappings() {
     for (MappingDefinition def : endpointDef().effectiveMappings()) {
       MInnerMappingDefinition inner = new MInnerMappingDefinition();
-      inner.setMappingDefinition(def);
+      inner.setMMappingDefinition(def.toMustache());
       addInnerMappingDefinition(inner);
     }
   }
-  syn lazy MReceiveDefinition ReceiveFromMqttDefinition.toMustache() {
+
+  syn lazy MReceiveDefinition ReceiveTokenEndpointDefinition.toMustache() {
     MReceiveDefinition result = new MReceiveDefinition();
-    result.setReceiveFromMqttDefinition(this);
+    result.setReceiveTokenEndpointDefinition(this);
     result.addInnerMappings();
     return result;
   }
-  syn lazy MSendDefinition SendToMqttDefinition.toMustache() {
+
+  syn lazy MSendDefinition SendTokenEndpointDefinition.toMustache() {
     MSendDefinition result = new MSendDefinition();
-    result.setSendToMqttDefinition(this);
+    result.setSendTokenEndpointDefinition(this);
     result.addInnerMappings();
     return result;
   }
+
   syn lazy MMappingDefinition MappingDefinition.toMustache() {
     MMappingDefinition result = new MMappingDefinition();
     result.setMappingDefinition(this);
     return result;
   }
+
   syn lazy MDependencyDefinition DependencyDefinition.toMustache() {
     MDependencyDefinition result = new MDependencyDefinition();
     result.setDependencyDefinition(this);
     return result;
   }
+
   syn lazy MTypeComponent TypeComponent.toMustache() {
     MTypeComponent result = new MTypeComponent();
     result.setTypeComponent(this);
     return result;
   }
+
   syn lazy MTokenComponent TokenComponent.toMustache() {
     MTokenComponent result = new MTokenComponent();
     result.setTokenComponent(this);
@@ -201,37 +181,6 @@ aspect AttributesForMustache {
 }
 
 aspect AspectGeneration {