Optimization: remove redundant check on each vector operation

Signed-off-by: stroller <[email protected]>

Author: jiafu1115

vector-stores/spring-ai-elasticsearch-store/src/main/java/org/springframework/ai/vectorstore/elasticsearch/ElasticsearchVectorStore.java

@@ -176,11 +176,6 @@ protected ElasticsearchVectorStore(Builder builder) {
 
 	@Override
 	public void doAdd(List<Document> documents) {
-		// For the index to be present, either it must be pre-created or set the
-		// initializeSchema to true.
-		if (!indexExists()) {
-			throw new IllegalArgumentException("Index not found");
-		}
 		BulkRequest.Builder bulkRequestBuilder = new BulkRequest.Builder();
 
 		List<float[]> embeddings = this.embeddingModel.embed(documents, EmbeddingOptionsBuilder.builder().build(),
@@ -214,11 +209,6 @@ private Object getDocument(Document document, float[] embedding, String embeddin
 	@Override
 	public void doDelete(List<String> idList) {
 		BulkRequest.Builder bulkRequestBuilder = new BulkRequest.Builder();
-		// For the index to be present, either it must be pre-created or set the
-		// initializeSchema to true.
-		if (!indexExists()) {
-			throw new IllegalArgumentException("Index not found");
-		}
 		for (String id : idList) {
 			bulkRequestBuilder.operations(op -> op.delete(idx -> idx.index(this.options.getIndexName()).id(id)));
 		}
@@ -229,12 +219,6 @@ public void doDelete(List<String> idList) {
 
 	@Override
 	public void doDelete(Filter.Expression filterExpression) {
-		// For the index to be present, either it must be pre-created or set the
-		// initializeSchema to true.
-		if (!indexExists()) {
-			throw new IllegalArgumentException("Index not found");
-		}
-
 		try {
 			this.elasticsearchClient.deleteByQuery(d -> d.index(this.options.getIndexName())
 				.query(q -> q.queryString(qs -> qs.query(getElasticsearchQueryString(filterExpression)))));
@@ -349,7 +333,13 @@ private DenseVectorSimilarity parseSimilarity(String similarity) {
 
 	@Override
 	public void afterPropertiesSet() {
+		// For the index to be present, either it must be pre-created or set the
+		// initializeSchema to true.
 		if (!this.initializeSchema) {
+			boolean exists = indexExists();
+			if(!exists){
+				throw new IllegalArgumentException("Index not found");
+			}
 			return;
 		}
 		if (!indexExists()) {