fix: remove Stack Overflow code references for ASF compliance

amber/src/main/scala/org/apache/texera/amber/engine/architecture/controller/Controller.scala

@@ -199,8 +199,7 @@ class Controller(
 
   override def handleBackpressure(isBackpressured: Boolean): Unit = {}
 
-  // adopted solution from
-  // https://stackoverflow.com/questions/54228901/right-way-of-exception-handling-when-using-akka-actors
+  // Use AllForOneStrategy to stop all children on any fatal error and report it to the client.
   override val supervisorStrategy: SupervisorStrategy =
     AllForOneStrategy(maxNrOfRetries = 0, withinTimeRange = 1.minute) {
       case e: Throwable =>

amber/src/main/scala/org/apache/texera/web/ServletAwareConfigurator.scala

@@ -33,12 +33,9 @@ import javax.websocket.server.{HandshakeRequest, ServerEndpointConfig}
 import scala.jdk.CollectionConverters.{ListHasAsScala, _}
 
 /**
-  * This configurator extracts HTTPSession and associates it to ServerEndpointConfig,
-  * allow it to be accessed by Websocket connections.
-  * <pre>
-  * See <a href="https://stackoverflow.com/questions/17936440/accessing-httpsession-
-  * from-httpservletrequest-in-a-web-socket-serverendpoint"></a>
-  * </pre>
+  * This configurator extracts user identity from the HTTP handshake request
+  * and associates it with the ServerEndpointConfig, allowing it to be
+  * accessed by WebSocket connections.
   */
 class ServletAwareConfigurator extends ServerEndpointConfig.Configurator with LazyLogging {
 

common/workflow-core/src/main/scala/org/apache/texera/amber/core/workflow/PhysicalOp.scala

@@ -158,8 +158,8 @@ object PhysicalOp {
   }
 }
 
-// @JsonIgnore is not working when directly annotated to fields of a case class
-// https://stackoverflow.com/questions/40482904/jsonignore-doesnt-work-in-scala-case-class
+// In Scala case classes, @JsonIgnore on constructor parameters is not recognized by Jackson.
+// Use @JsonIgnoreProperties at the class level instead.
 @JsonIgnoreProperties(
   Array(
     "opExecInitInfo", // function type, ignore it

common/workflow-operator/src/main/scala/com/kjetland/jackson/jsonSchema/JsonSchemaGenerator.scala

@@ -1483,17 +1483,33 @@ class JsonSchemaGenerator(
   }
 
   def generateTitleFromPropertyName(propertyName: String): String = {
-    // Code found here: http://stackoverflow.com/questions/2559759/how-do-i-convert-camelcase-into-human-readable-names-in-java
-    val s = propertyName.replaceAll(
-      String.format(
-        "%s|%s|%s",
-        "(?<=[A-Z])(?=[A-Z][a-z])",
-        "(?<=[^A-Z])(?=[A-Z])",
-        "(?<=[A-Za-z])(?=[^A-Za-z])"
-      ),
-      " "
-    )
+    // Insert spaces at camelCase/PascalCase boundaries and letter-to-non-letter transitions.
+    val builder = new StringBuilder
+    for (i <- propertyName.indices) {
+      val c = propertyName(i)
+      if (i > 0) {
+        val prev = propertyName(i - 1)
+        val isCurrentUpper = c.isUpper
+        val isPrevUpper = prev.isUpper
+        val isPrevLetter = prev.isLetter
+        val isCurrentLetter = c.isLetter
+        val nextIsLower = i + 1 < propertyName.length && propertyName(i + 1).isLower
+
+        // Space before uppercase that follows a non-uppercase char (e.g., "camelCase" or "123Value")
+        // Space before uppercase in an acronym run when next char is lowercase (e.g., "XMLParser")
+        // Space before a non-letter that follows a letter (e.g., "test123")
+        if (
+          (isCurrentUpper && !isPrevUpper) ||
+          (isCurrentUpper && isPrevUpper && nextIsLower) ||
+          (!isCurrentLetter && isPrevLetter)
+        ) {
+          builder.append(' ')
+        }
+      }
+      builder.append(c)
+    }
 
+    val s = builder.toString()
     // Make the first letter uppercase
     s.substring(0, 1).toUpperCase() + s.substring(1)
   }

frontend/custom-webpack.config.js

@@ -29,8 +29,8 @@ module.exports = {
         ],
       },
     ],
-    // this is required for loading .wasm (and other) files.
-    // For context, see https://stackoverflow.com/a/75252098 and https://github.com/angular/angular-cli/issues/24617
+    // Enable URL handling in webpack's JavaScript parser, required for loading .wasm files.
+    // See https://github.com/angular/angular-cli/issues/24617
     parser: {
       javascript: {
         url: true,

frontend/src/app/common/service/user/auth.service.ts

@@ -175,11 +175,11 @@ export class AuthService {
     const expirationTime = this.jwtHelperService.getTokenExpirationDate()?.getTime();
     const token = AuthService.getAccessToken();
     if (token !== null && !this.jwtHelperService.isTokenExpired(token) && expirationTime !== undefined) {
-      // use timer with ignoreElements to avoid event being immediately triggered (in RxJS 7)
-      // see https://stackoverflow.com/questions/70013573/how-to-replicate-delay-from-rxjs-6-x
+      // In RxJS 7, timer emits immediately then completes. Using ignoreElements() suppresses
+      // the emitted value so the complete callback fires only after the specified delay.
       this.tokenExpirationSubscription = timer(expirationTime - new Date().getTime())
         .pipe(ignoreElements())
-        .subscribe(() => this.logout());
+        .subscribe({ complete: () => this.logout() });
     }
   }
 

frontend/src/app/common/type/generic-web-response.ts

@@ -18,9 +18,8 @@
  */
 
 /**
- * make sure do not add const/declare before enum here.
- * Const enums are removed during transpiration in JS so you can not use them at runtime.
- * Source: https://stackoverflow.com/questions/50365598/typescript-runtime-error-cannot-read-property-of-undefined-enum
+ * Do not use `const enum` here. Const enums are inlined at compile time and removed
+ * from the emitted JavaScript, which causes runtime errors if the enum is accessed dynamically.
  */
 export enum GenericWebResponseCode {
   SUCCESS = 0,