refactor: Refactored the initializeContainer method of CosmosDBVectorStore: 1. Removed all parameters from the method signature, as they are already accessible via instance properties. 2. Eliminated meaningless reassignments of method parameters.

Signed-off-by: Sun Yuhan <sunyuhan1998@users.noreply.github.com>

Author: sunyuhan1998

vector-stores/spring-ai-azure-cosmos-db-store/src/main/java/org/springframework/ai/vectorstore/cosmosdb/CosmosDBVectorStore.java

@@ -128,31 +128,27 @@ protected CosmosDBVectorStore(Builder builder) {
 logger.error("Error creating database: {}", e.getMessage());
 }
 
-initializeContainer(this.containerName, this.databaseName, this.vectorStoreThroughput, this.vectorDimensions,
-this.partitionKeyPath);
+initializeContainer();
 }
 
 public static Builder builder(CosmosAsyncClient cosmosClient, EmbeddingModel embeddingModel) {
 return new Builder(cosmosClient, embeddingModel);
 }
 
-private void initializeContainer(String containerName, String databaseName, int vectorStoreThroughput,
-long vectorDimensions, String partitionKeyPath) {
+private void initializeContainer() {
 
 // Set defaults if not provided
 if (this.vectorStoreThroughput == 0) {
 this.vectorStoreThroughput = 400;
-vectorStoreThroughput = this.vectorStoreThroughput;
 }
 if (this.partitionKeyPath == null) {
 this.partitionKeyPath = "/id";
-partitionKeyPath = this.partitionKeyPath;
 }
 
 // handle hierarchical partition key
 PartitionKeyDefinition subPartitionKeyDefinition = new PartitionKeyDefinition();
 List<String> pathsFromCommaSeparatedList = new ArrayList<>();
-String[] subPartitionKeyPaths = partitionKeyPath.split(",");
+String[] subPartitionKeyPaths = this.partitionKeyPath.split(",");
 Collections.addAll(pathsFromCommaSeparatedList, subPartitionKeyPaths);
 if (subPartitionKeyPaths.length > 1) {
 subPartitionKeyDefinition.setPaths(pathsFromCommaSeparatedList);