diff --git a/AlgebraicDataflowArchitectureModel/src/generators/CodeGeneratorFromDataFlowGraph.java b/AlgebraicDataflowArchitectureModel/src/generators/CodeGeneratorFromDataFlowGraph.java
index df21c03..df7c5d4 100644
--- a/AlgebraicDataflowArchitectureModel/src/generators/CodeGeneratorFromDataFlowGraph.java
+++ b/AlgebraicDataflowArchitectureModel/src/generators/CodeGeneratorFromDataFlowGraph.java
@@ -180,7 +180,7 @@
 			}
 			
 			// Declare the fields to refer to other resources for push/pull transfer in the parent/this component, and the state field in the parent component.
-			boolean bDeclareClientField = declareFieldsToReferToOtherResourcesAndStateFieldInParentComponent(resourceNode, component, parentComponent, constructorParams, platformSpec, langSpec);
+			declareFieldsToReferToOtherResourcesAndStateFieldInParentComponent(resourceNode, component, parentComponent, constructorParams, platformSpec, langSpec);
 			
 			// (#2) Declare the getter method to obtain the resource state in an ancestor resource. (complementary to #1)
 			if (component == null) {
@@ -494,11 +494,10 @@
 		}
 	}
 
-	private boolean declareFieldsToReferToOtherResourcesAndStateFieldInParentComponent(ResourceNode resourceNode, TypeDeclaration component, TypeDeclaration parentComponent, 
+	private void declareFieldsToReferToOtherResourcesAndStateFieldInParentComponent(ResourceNode resourceNode, TypeDeclaration component, TypeDeclaration parentComponent, 
 			Map<ResourceHierarchy, Map<String, VariableDeclaration>> constructorParams, IPlatformSpecific platformSpec, ILanguageSpecific langSpec) {
 		// Declare reference fields for push data transfer.
 		boolean noPullTransfer = true;
-		boolean bDeclareClientField = false;
 		for (Edge resToCh : resourceNode.getOutEdges()) {
 			DataFlowEdge re = (DataFlowEdge) resToCh;
 			ChannelNode directDstChNode = (ChannelNode) re.getDestination();
@@ -548,7 +547,7 @@
 						outsideInputResource = true;	// Regarded as (collecting) pull transfer.
 					}
 					if ((((PushPullAttribute) re.getAttribute()).getSelectedOption() == PushPullValue.PUSH && !outsideInputResource) || outsideOutputResource) {
-						// Declare a field in the parent component to refer to the destination resource of push transfer.
+						// Declare a field in the parent or this component to refer to the destination resource of push transfer.
 						if (!generatesComponent(dstRes)) {
 							dstRes = dstRes.getParent();
 						}
@@ -558,10 +557,10 @@
 						if (!platformSpec.isMonolithic() 
 								&& (outsideOutputResource || (resourceNode.getOutSideResource(ch).getCommonPrefix(dstResPath) == null && platformSpec.isDifferentTreesAsDifferentServices()))) {
 							// Inter-service (for REST API)
-							if (!bDeclareClientField && parentComponent != null) {
+							if (parentComponent != null && 
+									!((RestApiSpecific) platformSpec).hasHttpClientFieldDeclaration(parentComponent)) {
 								// Declare a client field to connect to the destination resource of push transfer.
-								((RestApiSpecific) platformSpec).addClientFieldDeclaration(parentComponent);
-								bDeclareClientField = true;
+								((RestApiSpecific) platformSpec).addHttpClientFieldDeclaration(parentComponent);
 							}
 						} else {
 							// Monolithic or Inner-service
@@ -596,54 +595,54 @@
 									}
 								}
 							}
-						}
-						if (outsideOutputResource) {
-							// When the reference to the destination resource can vary.
-							if (dstRes.getParent() != null) {
-								// Reference to its root resource.
-								String dstRootResName = getComponentName(dstRes.getRoot(), langSpec);
-								Type dstRootResType = new Type(dstRootResName, dstRootResName);
-								dstRootResName = langSpec.toVariableName(dstRootResName);
-								FieldDeclaration refRootFieldForPush = langSpec.newFieldDeclaration(dstRootResType, dstRootResName);
-								VariableDeclaration refRootVarForPush = langSpec.newVariableDeclaration(dstRootResType, dstRootResName);
-								if (component != null) {
-									// A component is created for this resource.
-									boolean existsField = false;
-									for (FieldDeclaration field: component.getFields()) {
-										if (dstRootResName.equals(field.getName())) {
-											existsField = true;
-											break;
+							if (outsideOutputResource) {
+								// When the reference to the destination resource can vary.
+								if (dstRes.getParent() != null) {
+									// Reference to its root resource.
+									String dstRootResName = getComponentName(dstRes.getRoot(), langSpec);
+									Type dstRootResType = new Type(dstRootResName, dstRootResName);
+									dstRootResName = langSpec.toVariableName(dstRootResName);
+									FieldDeclaration refRootFieldForPush = langSpec.newFieldDeclaration(dstRootResType, dstRootResName);
+									VariableDeclaration refRootVarForPush = langSpec.newVariableDeclaration(dstRootResType, dstRootResName);
+									if (component != null) {
+										// A component is created for this resource.
+										boolean existsField = false;
+										for (FieldDeclaration field: component.getFields()) {
+											if (dstRootResName.equals(field.getName())) {
+												existsField = true;
+												break;
+											}
 										}
-									}
-									if (!existsField) {
-										component.addField(refRootFieldForPush);
-										Map<String, VariableDeclaration> nameToParam = constructorParams.get(resourceNode.getResourceHierarchy());
-										if (nameToParam == null) {
-											nameToParam = new HashMap<>();
-											constructorParams.put(resourceNode.getResourceHierarchy(), nameToParam);
+										if (!existsField) {
+											component.addField(refRootFieldForPush);
+											Map<String, VariableDeclaration> nameToParam = constructorParams.get(resourceNode.getResourceHierarchy());
+											if (nameToParam == null) {
+												nameToParam = new HashMap<>();
+												constructorParams.put(resourceNode.getResourceHierarchy(), nameToParam);
+											}
+											if (nameToParam.get(dstRootResName) == null) {
+												nameToParam.put(dstRootResName, refRootVarForPush);
+											}
 										}
-										if (nameToParam.get(dstRootResName) == null) {
-											nameToParam.put(dstRootResName, refRootVarForPush);
+									} else {
+										// No component is created for this resource.
+										boolean existsField = false;
+										for (FieldDeclaration field: parentComponent.getFields()) {
+											if (dstRootResName.equals(field.getName())) {
+												existsField = true;
+												break;
+											}
 										}
-									}
-								} else {
-									// No component is created for this resource.
-									boolean existsField = false;
-									for (FieldDeclaration field: parentComponent.getFields()) {
-										if (dstRootResName.equals(field.getName())) {
-											existsField = true;
-											break;
-										}
-									}
-									if (!existsField) {
-										parentComponent.addField(refRootFieldForPush);
-										Map<String, VariableDeclaration> nameToParam = constructorParams.get(resourceNode.getParent().getResourceHierarchy());
-										if (nameToParam == null) {
-											nameToParam = new HashMap<>();
-											constructorParams.put(resourceNode.getParent().getResourceHierarchy(), nameToParam);
-										}
-										if (nameToParam.get(dstRootResName) == null) {
-											nameToParam.put(dstRootResName, refRootVarForPush);
+										if (!existsField) {
+											parentComponent.addField(refRootFieldForPush);
+											Map<String, VariableDeclaration> nameToParam = constructorParams.get(resourceNode.getParent().getResourceHierarchy());
+											if (nameToParam == null) {
+												nameToParam = new HashMap<>();
+												constructorParams.put(resourceNode.getParent().getResourceHierarchy(), nameToParam);
+											}
+											if (nameToParam.get(dstRootResName) == null) {
+												nameToParam.put(dstRootResName, refRootVarForPush);
+											}
 										}
 									}
 								}
@@ -708,10 +707,10 @@
 					if (!platformSpec.isMonolithic() 
 							&& (outsideInputResource || (resourceNode.getInSideResource(ch).getCommonPrefix(srcRes) == null && platformSpec.isDifferentTreesAsDifferentServices()))) {
 						// Inter-service (for REST API)
-						if (!bDeclareClientField && parentComponent != null) {
+						if (parentComponent != null 
+								&& !((RestApiSpecific) platformSpec).hasHttpClientFieldDeclaration(parentComponent)) {
 							// Declare a client field to connect to the destination resource of push transfer.
-							((RestApiSpecific) platformSpec).addClientFieldDeclaration(parentComponent);
-							bDeclareClientField = true;
+							((RestApiSpecific) platformSpec).addHttpClientFieldDeclaration(parentComponent);
 						}
 					} else {
 						// Monolithic or Inner-service (for REST API)
@@ -747,54 +746,54 @@
 								}
 							}
 						}
-					}
-					if (outsideInputResource) {
-						// When the reference to the source resource can vary.
-						if (srcRes.getParent() != null) {
-							// Reference to its root resource.
-							String srcRootResName = getComponentName(srcRes.getRoot().getResourceHierarchy(), langSpec);
-							Type srcRootResType = new Type(srcRootResName, srcRootResName);
-							srcRootResName = langSpec.toVariableName(srcRootResName);
-							FieldDeclaration refRootFieldForPull = langSpec.newFieldDeclaration(srcRootResType, srcRootResName);
-							VariableDeclaration refRootVarForPull = langSpec.newVariableDeclaration(srcRootResType, srcRootResName);
-							if (component != null) {
-								// A component is created for this resource.
-								boolean existsField = false;
-								for (FieldDeclaration field: component.getFields()) {
-									if (srcRootResName.equals(field.getName())) {
-										existsField = true;
-										break;
+						if (outsideInputResource) {
+							// When the reference to the source resource can vary.
+							if (srcRes.getParent() != null) {
+								// Reference to its root resource.
+								String srcRootResName = getComponentName(srcRes.getRoot().getResourceHierarchy(), langSpec);
+								Type srcRootResType = new Type(srcRootResName, srcRootResName);
+								srcRootResName = langSpec.toVariableName(srcRootResName);
+								FieldDeclaration refRootFieldForPull = langSpec.newFieldDeclaration(srcRootResType, srcRootResName);
+								VariableDeclaration refRootVarForPull = langSpec.newVariableDeclaration(srcRootResType, srcRootResName);
+								if (component != null) {
+									// A component is created for this resource.
+									boolean existsField = false;
+									for (FieldDeclaration field: component.getFields()) {
+										if (srcRootResName.equals(field.getName())) {
+											existsField = true;
+											break;
+										}
 									}
-								}
-								if (!existsField) {
-									component.addField(refRootFieldForPull);
-									Map<String, VariableDeclaration> nameToParam = constructorParams.get(resourceNode.getResourceHierarchy());
-									if (nameToParam == null) {
-										nameToParam = new HashMap<>();
-										constructorParams.put(resourceNode.getResourceHierarchy(), nameToParam);
+									if (!existsField) {
+										component.addField(refRootFieldForPull);
+										Map<String, VariableDeclaration> nameToParam = constructorParams.get(resourceNode.getResourceHierarchy());
+										if (nameToParam == null) {
+											nameToParam = new HashMap<>();
+											constructorParams.put(resourceNode.getResourceHierarchy(), nameToParam);
+										}
+										if (nameToParam.get(srcRootResName) == null) {
+											nameToParam.put(srcRootResName, refRootVarForPull);
+										}
 									}
-									if (nameToParam.get(srcRootResName) == null) {
-										nameToParam.put(srcRootResName, refRootVarForPull);
+								} else {
+									// No component is created for this resource.
+									boolean existsField = false;
+									for (FieldDeclaration field: parentComponent.getFields()) {
+										if (srcRootResName.equals(field.getName())) {
+											existsField = true;
+											break;
+										}
 									}
-								}
-							} else {
-								// No component is created for this resource.
-								boolean existsField = false;
-								for (FieldDeclaration field: parentComponent.getFields()) {
-									if (srcRootResName.equals(field.getName())) {
-										existsField = true;
-										break;
-									}
-								}
-								if (!existsField) {
-									parentComponent.addField(refRootFieldForPull);									
-									Map<String, VariableDeclaration> nameToParam = constructorParams.get(resourceNode.getParent().getResourceHierarchy());
-									if (nameToParam == null) {
-										nameToParam = new HashMap<>();
-										constructorParams.put(resourceNode.getParent().getResourceHierarchy(), nameToParam);
-									}
-									if (nameToParam.get(srcRootResName) == null) {
-										nameToParam.put(srcRootResName, refRootVarForPull);
+									if (!existsField) {
+										parentComponent.addField(refRootFieldForPull);									
+										Map<String, VariableDeclaration> nameToParam = constructorParams.get(resourceNode.getParent().getResourceHierarchy());
+										if (nameToParam == null) {
+											nameToParam = new HashMap<>();
+											constructorParams.put(resourceNode.getParent().getResourceHierarchy(), nameToParam);
+										}
+										if (nameToParam.get(srcRootResName) == null) {
+											nameToParam.put(srcRootResName, refRootVarForPull);
+										}
 									}
 								}
 							}
@@ -829,7 +828,6 @@
 				}
 			}
 		}
-		return bDeclareClientField;
 	}
 	
 	
@@ -850,7 +848,9 @@
 			// invocations to other getter methods when at least one incoming data-flow edges is PULL-style.
 			if (addOtherGetterInvocationsToStateGatter(stateGetter, resourceNode, platformSpec, langSpec)) {
 				// Declare a client field to connect to the destination resource of push transfer.
-				((RestApiSpecific) platformSpec).addClientFieldDeclaration(component);
+				if (!((RestApiSpecific) platformSpec).hasHttpClientFieldDeclaration(component)) {
+					((RestApiSpecific) platformSpec).addHttpClientFieldDeclaration(component);
+				}
 			}
 		}
 		
@@ -907,7 +907,9 @@
 		} else {	
 			if (addOtherGetterInvocationsToStateGatter(stateGetter, resourceNode, platformSpec, langSpec)) {
 				// Declare a client field to connect to the destination resource of push transfer.
-				((RestApiSpecific) platformSpec).addClientFieldDeclaration(ancestorComponent);
+				if (ancestorComponent != null && !((RestApiSpecific) platformSpec).hasHttpClientFieldDeclaration(ancestorComponent)) {
+					((RestApiSpecific) platformSpec).addHttpClientFieldDeclaration(ancestorComponent);
+				}
 			}
 		}
 		
@@ -1280,7 +1282,6 @@
 		String resComponentName = getComponentName(resourceNode.getResourceHierarchy(), langSpec);
 		List<String> constructorStatements = new ArrayList<>();
 		Map<MethodDeclaration, Map.Entry<Expression, Map.Entry<ResourceHierarchy, ResourceHierarchy>>> updateStatements = new HashMap<>();
-		boolean bDeclareClientField = false;
 		for (Edge chToRes: resourceNode.getInEdges()) {
 			ChannelNode directSrcChannel = (ChannelNode) chToRes.getSource();
 			DataTransferChannel ch = directSrcChannel.getChannel();
@@ -1341,10 +1342,9 @@
 							&& (outsideOutputResource || (resourceNode.getInSideResource(ch).getCommonPrefix(srcResPath) == null && platformSpec.isDifferentTreesAsDifferentServices()))) {
 						// Inter-service
 						hasRestAPI = true;
-						if (!bDeclareClientField && component != null) {
+						if (component != null && !((RestApiSpecific) platformSpec).hasHttpClientFieldDeclaration(component)) {
 							// Declare a client field to connect to the destination resource of push transfer.
-							((RestApiSpecific) platformSpec).addClientFieldDeclaration(component);
-							bDeclareClientField = true;
+							((RestApiSpecific) platformSpec).addHttpClientFieldDeclaration(component);
 						}
 						if (resourceNode.getParent() == null) {
 							// A root resource
@@ -1672,54 +1672,58 @@
 						}
 					}
 					
-					Set<ChannelMember> outsideInputMembers = new HashSet<>();
-					for (ChannelMember cm: ch.getInputChannelMembers()) {
-						if (cm.isOutside()) {
-							outsideInputMembers.add(cm);
-						}
-					}
-					if (outsideInputMembers.size() > 0) {
-						Map<ChannelMember, Entry<ResourcePath, Set<ChannelMember>>> resourcePaths = null;
-						for (ChannelMember out1: ch.getOutputChannelMembers()) {
-							if (resourceNode.getInSideResources().contains(out1.getResource())) {
-								try {
-									resourcePaths = ch.fillOutsideResourcePaths(out1, getPullAccessor(platformSpec));
-								} catch (ParameterizedIdentifierIsFutureWork | ResolvingMultipleDefinitionIsFutureWork
-										| InvalidMessage | UnificationFailed | ValueUndefined e) {
-									e.printStackTrace();
-								}
-								break;
+					// Update and initialize a field to refer to an outside input resource for PULL transfer.
+					if (platformSpec.isMonolithic()) {
+						// For a monolithic application.
+						Set<ChannelMember> outsideInputMembers = new HashSet<>();
+						for (ChannelMember cm: ch.getInputChannelMembers()) {
+							if (cm.isOutside()) {
+								outsideInputMembers.add(cm);
 							}
 						}
-						if (resourcePaths != null && resourcePaths.size() > 0) {
-							for (ChannelMember outsideMember: outsideInputMembers) {
-								for (ChannelMember dependingMember: resourcePaths.get(outsideMember).getValue()) {
-									if (dependingMember.getResource().equals(srcResPath)) {
-										// An outside input resource path depends on srcRes.
-										ResourcePath outsidePath = resourcePaths.get(outsideMember).getKey();
-										String outsideResName = langSpec.toVariableName(getComponentName(outsidePath.getResourceHierarchy(), langSpec));
-										Expression outsideExp = getPullAccessor(platformSpec).getDirectStateAccessorFor(outsidePath, null);
-										if (generatesComponent(outsidePath.getResourceHierarchy())) {
-											outsideExp = ((Term) outsideExp).getChild(0);
-										}
-										Expression nextExp = dependingMember.getStateTransition().getNextStateExpression();
-										if (nextExp != null && outsideExp instanceof Term) {
-											if (nextExp instanceof Variable) {
-												outsideExp = ((Term) outsideExp).substitute((Variable) nextExp, new Field(langSpec.toVariableName(getComponentName(dependingMember.getResource().getResourceHierarchy(), langSpec)))); 
-											} else {
-												// ToDo.
+						if (outsideInputMembers.size() > 0) {
+							Map<ChannelMember, Entry<ResourcePath, Set<ChannelMember>>> resourcePaths = null;
+							for (ChannelMember out1: ch.getOutputChannelMembers()) {
+								if (resourceNode.getInSideResources().contains(out1.getResource())) {
+									try {
+										resourcePaths = ch.fillOutsideResourcePaths(out1, getPullAccessor(platformSpec));
+									} catch (ParameterizedIdentifierIsFutureWork | ResolvingMultipleDefinitionIsFutureWork
+											| InvalidMessage | UnificationFailed | ValueUndefined e) {
+										e.printStackTrace();
+									}
+									break;
+								}
+							}
+							if (resourcePaths != null && resourcePaths.size() > 0) {
+								for (ChannelMember outsideMember: outsideInputMembers) {
+									for (ChannelMember dependingMember: resourcePaths.get(outsideMember).getValue()) {
+										if (dependingMember.getResource().equals(srcResPath)) {
+											// An outside input resource path depends on srcRes.
+											ResourcePath outsidePath = resourcePaths.get(outsideMember).getKey();
+											String outsideResName = langSpec.toVariableName(getComponentName(outsidePath.getResourceHierarchy(), langSpec));
+											Expression outsideExp = getPullAccessor(platformSpec).getDirectStateAccessorFor(outsidePath, null);
+											if (generatesComponent(outsidePath.getResourceHierarchy())) {
+												outsideExp = ((Term) outsideExp).getChild(0);
 											}
-										}
-										String[] sideEffects = new String[] {""};
-										String outsideAccessor = outsideExp.toImplementation(sideEffects);
-										String updateReference = langSpec.getFieldAccessor(outsideResName) + langSpec.getAssignment() + outsideAccessor + langSpec.getStatementDelimiter();
-										update.addStatement(updateReference);			// Update the reference field.
-										// Update constructor.
-										if (component != null) {
-											MethodDeclaration constructor = getConstructor(component);
-											constructor.addStatement(updateReference);		// Initialize the reference field.
-										} else if (parentComponent != null){
-											constructorStatements.add(updateReference);
+											Expression nextExp = dependingMember.getStateTransition().getNextStateExpression();
+											if (nextExp != null && outsideExp instanceof Term) {
+												if (nextExp instanceof Variable) {
+													outsideExp = ((Term) outsideExp).substitute((Variable) nextExp, new Field(langSpec.toVariableName(getComponentName(dependingMember.getResource().getResourceHierarchy(), langSpec)))); 
+												} else {
+													// ToDo.
+												}
+											}
+											String[] sideEffects = new String[] {""};
+											String outsideAccessor = outsideExp.toImplementation(sideEffects);
+											String updateReference = langSpec.getFieldAccessor(outsideResName) + langSpec.getAssignment() + outsideAccessor + langSpec.getStatementDelimiter();
+											update.addStatement(updateReference);			// Update the reference field.
+											// Update constructor.
+											if (component != null) {
+												MethodDeclaration constructor = getConstructor(component);
+												constructor.addStatement(updateReference);		// Initialize the reference field.
+											} else if (parentComponent != null){
+												constructorStatements.add(updateReference);
+											}
 										}
 									}
 								}
@@ -2132,7 +2136,6 @@
 		String resComponentName = langSpec.toComponentName(resName);
 		List<String> constructorStatements = new ArrayList<>();
 		Map<MethodDeclaration, Map.Entry<Expression, Map.Entry<ResourceHierarchy, ResourceHierarchy>>> inputStatements = new HashMap<>();
-		boolean bDeclareClientField = false;
 		for (Channel ch: model.getInputChannels()) {
 			for (ChannelMember cm : ((DataTransferChannel) ch).getOutputChannelMembers()) {
 				if (!cm.isOutside()) {
@@ -2909,10 +2912,9 @@
 												input.addStatement(langSpec.getVariableDeclaration(DataConstraintModel.typeString.getInterfaceTypeName(), "result")
 																			+ langSpec.getAssignment() + restApiSpec.getHttpMethodCallStatement(restApiSpec.getBaseURL(), dstPath, resName2, httpMethod));
 												hasUpdateMethodinvoked = true;
-												if (!bDeclareClientField && component != null) {
+												if (component != null && !((RestApiSpecific) platformSpec).hasHttpClientFieldDeclaration(component)) {
 													// Declare a client field to connect to the destination resource of push transfer.
-													((RestApiSpecific) platformSpec).addClientFieldDeclaration(component);
-													bDeclareClientField = true;
+													((RestApiSpecific) platformSpec).addHttpClientFieldDeclaration(component);
 												}
 											} else {
 												// After the second time of call to update methods in this method
@@ -2955,48 +2957,53 @@
 									}
 								}
 							}
-							if (outsideInputMembers2.size() > 0) {
-								if (!generatesComponent(resourceNode.getResourceHierarchy())) {
-									ResourcePath srcRes2 = resourceNode.getOutSideResource(directDstCh);
-									for (ChannelMember out2: directDstCh.getOutputChannelMembers()) {
-										if (!generatesComponent(out2.getResource().getResourceHierarchy())) {
-											ResourcePath dstRes2 = out2.getResource();
-											if (srcRes2.getParent().equals(dstRes2.getParent())) {
-												Map<ChannelMember, Entry<ResourcePath, Set<ChannelMember>>> resourcePaths = null;
-												try {
-													resourcePaths = directDstCh.fillOutsideResourcePaths(out2, getPullAccessor(platformSpec));
-													if (resourcePaths != null && resourcePaths.size() > 0) {
-														for (ChannelMember outsideMember: outsideInputMembers2) {
-															for (ChannelMember dependedMember: resourcePaths.get(outsideMember).getValue()) {
-																if (dependedMember.getResource().equals(srcRes2)) {
-																	// An outside input resource path depends on srcRes.
-																	ResourcePath outsidePath = resourcePaths.get(outsideMember).getKey();
-																	if (!generatesComponent(outsidePath.getResourceHierarchy())) {
-																		outsidePath = outsidePath.getParent();
-																	}
-																	String outsideResName = langSpec.toVariableName(getComponentName(outsidePath.getResourceHierarchy(), langSpec));
-																	Expression outsideExp = getPullAccessor(platformSpec).getDirectStateAccessorFor(outsidePath, null);
-																	if (generatesComponent(outsidePath.getResourceHierarchy())) {
-																		outsideExp = ((Term) outsideExp).getChild(0);
-																	}
-																	String[] sideEffects = new String[] {""};
-																	String outsideAccessor = outsideExp.toImplementation(sideEffects);
-																	input.addStatement(langSpec.getFieldAccessor(outsideResName) + langSpec.getAssignment() + outsideAccessor + langSpec.getStatementDelimiter());		// change the reference field.
-																	// Update constructor.
-																	String initializingStatement = langSpec.getFieldAccessor(outsideResName) + langSpec.getAssignment() + outsideAccessor + langSpec.getStatementDelimiter();
-																	if (component != null) {
-																		MethodDeclaration constructor = getConstructor(component);
-																		constructor.addStatement(initializingStatement);		// initialize the reference field.
-																	} else {
-																		constructorStatements.add(initializingStatement);		// initialize the reference field.
+							
+							// Update and initialize a field to refer to an outside input resource for PULL transfer.
+							if (platformSpec.isMonolithic()) {
+								// For a monolithic application.
+								if (outsideInputMembers2.size() > 0) {
+									if (!generatesComponent(resourceNode.getResourceHierarchy())) {
+										ResourcePath srcRes2 = resourceNode.getOutSideResource(directDstCh);
+										for (ChannelMember out2: directDstCh.getOutputChannelMembers()) {
+											if (!generatesComponent(out2.getResource().getResourceHierarchy())) {
+												ResourcePath dstRes2 = out2.getResource();
+												if (srcRes2.getParent().equals(dstRes2.getParent())) {
+													Map<ChannelMember, Entry<ResourcePath, Set<ChannelMember>>> resourcePaths = null;
+													try {
+														resourcePaths = directDstCh.fillOutsideResourcePaths(out2, getPullAccessor(platformSpec));
+														if (resourcePaths != null && resourcePaths.size() > 0) {
+															for (ChannelMember outsideMember: outsideInputMembers2) {
+																for (ChannelMember dependedMember: resourcePaths.get(outsideMember).getValue()) {
+																	if (dependedMember.getResource().equals(srcRes2)) {
+																		// An outside input resource path depends on srcRes.
+																		ResourcePath outsidePath = resourcePaths.get(outsideMember).getKey();
+																		if (!generatesComponent(outsidePath.getResourceHierarchy())) {
+																			outsidePath = outsidePath.getParent();
+																		}
+																		String outsideResName = langSpec.toVariableName(getComponentName(outsidePath.getResourceHierarchy(), langSpec));
+																		Expression outsideExp = getPullAccessor(platformSpec).getDirectStateAccessorFor(outsidePath, null);
+																		if (generatesComponent(outsidePath.getResourceHierarchy())) {
+																			outsideExp = ((Term) outsideExp).getChild(0);
+																		}
+																		String[] sideEffects = new String[] {""};
+																		String outsideAccessor = outsideExp.toImplementation(sideEffects);
+																		input.addStatement(langSpec.getFieldAccessor(outsideResName) + langSpec.getAssignment() + outsideAccessor + langSpec.getStatementDelimiter());		// change the reference field.
+																		// Update constructor.
+																		String initializingStatement = langSpec.getFieldAccessor(outsideResName) + langSpec.getAssignment() + outsideAccessor + langSpec.getStatementDelimiter();
+																		if (component != null) {
+																			MethodDeclaration constructor = getConstructor(component);
+																			constructor.addStatement(initializingStatement);		// initialize the reference field.
+																		} else {
+																			constructorStatements.add(initializingStatement);		// initialize the reference field.
+																		}
 																	}
 																}
 															}
 														}
+													} catch (ParameterizedIdentifierIsFutureWork | ResolvingMultipleDefinitionIsFutureWork
+															| InvalidMessage | UnificationFailed | ValueUndefined e) {
+														e.printStackTrace();
 													}
-												} catch (ParameterizedIdentifierIsFutureWork | ResolvingMultipleDefinitionIsFutureWork
-														| InvalidMessage | UnificationFailed | ValueUndefined e) {
-													e.printStackTrace();
 												}
 											}
 										}