feat: Enhance AddDataDialog with dataset file selection and improved upload process

backend/services/data-management-service/src/main/java/com/datamate/datamanagement/infrastructure/persistence/repository/impl/DatasetRepositoryImpl.java

@@ -51,10 +51,14 @@ public AllDatasetStatisticsResponse getAllDatasetStatistics() {
     @Override
     public IPage<Dataset> findByCriteria(IPage<Dataset> page, DatasetPagingQuery query) {
         LambdaQueryWrapper<Dataset> wrapper = new LambdaQueryWrapper<Dataset>()
-            .eq(query.getType() != null, Dataset::getDatasetType, query.getType())
-            .eq(query.getStatus() != null, Dataset::getStatus, query.getStatus())
-            .like(StringUtils.isNotBlank(query.getKeyword()), Dataset::getName, query.getKeyword())
-            .like(StringUtils.isNotBlank(query.getKeyword()), Dataset::getDescription, query.getKeyword());
+                .eq(query.getType() != null, Dataset::getDatasetType, query.getType())
+                .eq(query.getStatus() != null, Dataset::getStatus, query.getStatus());
+
+        if (StringUtils.isNotBlank(query.getKeyword())) {
+            wrapper.and(w ->
+                    w.like(Dataset::getName, query.getKeyword()).or()
+                            .like(Dataset::getDescription, query.getKeyword()));
+        }
 
         /*
           标签过滤 {@link Tag}

backend/services/rag-indexer-service/src/main/java/com/datamate/rag/indexer/application/KnowledgeBaseService.java

@@ -14,8 +14,8 @@
 import com.datamate.rag.indexer.domain.repository.KnowledgeBaseRepository;
 import com.datamate.rag.indexer.domain.repository.RagFileRepository;
 import com.datamate.rag.indexer.infrastructure.event.DataInsertedEvent;
+import com.datamate.rag.indexer.infrastructure.milvus.MilvusService;
 import com.datamate.rag.indexer.interfaces.dto.*;
-import io.milvus.client.MilvusClient;
 import io.milvus.param.collection.DropCollectionParam;
 import io.milvus.param.dml.DeleteParam;
 import lombok.RequiredArgsConstructor;
@@ -42,7 +42,7 @@ public class KnowledgeBaseService {
     private final RagFileRepository ragFileRepository;
     private final ApplicationEventPublisher eventPublisher;
     private final ModelConfigRepository modelConfigRepository;
-    private final MilvusClient milvusClient;
+    private final MilvusService milvusService;
 
     /**
      * 创建知识库
@@ -81,7 +81,7 @@ public void delete(String knowledgeBaseId) {
                 .orElseThrow(() -> BusinessException.of(KnowledgeBaseErrorCode.KNOWLEDGE_BASE_NOT_FOUND));
         knowledgeBaseRepository.removeById(knowledgeBaseId);
         ragFileRepository.removeByKnowledgeBaseId(knowledgeBaseId);
-        milvusClient.dropCollection(DropCollectionParam.newBuilder().withCollectionName(knowledgeBase.getName()).build());
+        milvusService.getMilvusClient().dropCollection(DropCollectionParam.newBuilder().withCollectionName(knowledgeBase.getName()).build());
     }
 
     public KnowledgeBaseResp getById(String knowledgeBaseId) {
@@ -147,7 +147,7 @@ public void deleteFiles(String knowledgeBaseId, DeleteFilesReq request) {
         KnowledgeBase knowledgeBase = Optional.ofNullable(knowledgeBaseRepository.getById(knowledgeBaseId))
                 .orElseThrow(() -> BusinessException.of(KnowledgeBaseErrorCode.KNOWLEDGE_BASE_NOT_FOUND));
         ragFileRepository.removeByIds(request.getIds());
-        milvusClient.delete(DeleteParam.newBuilder()
+        milvusService.getMilvusClient().delete(DeleteParam.newBuilder()
                 .withCollectionName(knowledgeBase.getName())
                 .withExpr("metadata[\"rag_file_id\"] in [" + org.apache.commons.lang3.StringUtils.join(request.getIds().stream().map(id -> "\"" + id + "\"").toArray(), ",") + "]")
                 .build());

backend/services/rag-indexer-service/src/main/java/com/datamate/rag/indexer/infrastructure/milvus/MilvusService.java

@@ -7,8 +7,8 @@
 import io.milvus.client.MilvusClient;
 import io.milvus.client.MilvusServiceClient;
 import io.milvus.param.ConnectParam;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.annotation.Bean;
 import org.springframework.stereotype.Component;
 
 /**
@@ -17,13 +17,16 @@
  * @author dallas
  * @since 2025-11-17
  */
+@Slf4j
 @Component
 public class MilvusService {
     @Value("${datamate.rag.milvus-host:milvus-standalone}")
     private String milvusHost;
     @Value("${datamate.rag.milvus-port:19530}")
     private int milvusPort;
 
+    private volatile MilvusClient milvusClient;
+
     public EmbeddingStore<TextSegment> embeddingStore(EmbeddingModel embeddingModel, String knowledgeBaseName) {
         return MilvusEmbeddingStore.builder()
                 .host(milvusHost)
@@ -33,12 +36,24 @@ public EmbeddingStore<TextSegment> embeddingStore(EmbeddingModel embeddingModel,
                 .build();
     }
 
-    @Bean
-    public MilvusClient milvusClient() {
-        ConnectParam connectParam = ConnectParam.newBuilder()
-                .withHost(milvusHost)
-                .withPort(milvusPort)
-                .build();
-        return new MilvusServiceClient(connectParam);
+    public MilvusClient getMilvusClient() {
+        if (milvusClient == null) {
+            synchronized (this) {
+                if (milvusClient == null) {
+                    try {
+                        ConnectParam connectParam = ConnectParam.newBuilder()
+                                .withHost(milvusHost)
+                                .withPort(milvusPort)
+                                .build();
+                        milvusClient = new MilvusServiceClient(connectParam);
+                        log.info("Milvus client connected successfully");
+                    } catch (Exception e) {
+                        log.error("Milvus client connection failed: {}", e.getMessage());
+                        throw new RuntimeException("Milvus client connection failed", e);
+                    }
+                }
+            }
+        }
+        return milvusClient;
     }
 }

frontend/src/pages/KnowledgeBase/Detail/KnowledgeBaseDetail.tsx

@@ -221,7 +221,7 @@ const KnowledgeBaseDetailPage: React.FC = () => {
               showReload={false}
             />
           </div>
-          <AddDataDialog knowledgeBase={knowledgeBase} />
+          <AddDataDialog knowledgeBase={knowledgeBase} onDataAdded={handleRefreshPage} />
         </div>
 
         <Table