feat(qdrant): Add vector index support

Author: harshitrwt

docs/docs/targets/index.md

@@ -333,6 +333,3 @@ You can find end-to-end examples fitting into any of supported property graphs i
 *   <ExampleButton href="https://github.com/cocoindex-io/cocoindex/tree/main/examples/docs_to_knowledge_graph" text="Docs to Knowledge Graph" margin="0 0 16px 0" />
 
 *   <ExampleButton href="https://github.com/cocoindex-io/cocoindex/tree/main/examples/product_recommendation" text="Product Recommendation" margin="0 0 16px 0" />
-
-
-

docs/docs/targets/kuzu.md

@@ -11,7 +11,7 @@ Exports data to a [Kuzu](https://kuzu.com/) graph database.
 
 ## Get Started
 
-Read [Property Graph Targets](./index.md#property-graph-targets) for more information to get started on how it works in CocoIndex. 
+Read [Property Graph Targets](./index.md#property-graph-targets) for more information to get started on how it works in CocoIndex.
 
 ## Spec
 
@@ -57,4 +57,4 @@ You can then access the explorer at [http://localhost:8124](http://localhost:812
   href="https://github.com/cocoindex-io/cocoindex/tree/main/examples/docs_to_knowledge_graph"
   text="Docs to Knowledge Graph"
   margin="16px 0 24px 0"
-/>
+/>

docs/docs/targets/neo4j.md

@@ -11,7 +11,7 @@ import { ExampleButton } from '../../src/components/GitHubButton';
 
 
 ## Get Started
-Read [Property Graph Targets](./index.md#property-graph-targets) for more information to get started on how it works in CocoIndex. 
+Read [Property Graph Targets](./index.md#property-graph-targets) for more information to get started on how it works in CocoIndex.
 
 
 ## Spec
@@ -49,4 +49,4 @@ You can access the Neo4j browser at [http://localhost:7474](http://localhost:747
   href="https://github.com/cocoindex-io/cocoindex/tree/main/examples/docs_to_knowledge_graph"
   text="Docs to Knowledge Graph"
   margin="16px 0 24px 0"
-/>
+/>

docs/sidebars.ts

@@ -49,7 +49,7 @@ const sidebars: SidebarsConfig = {
       link: { type: 'doc', id: 'targets/index' },
       collapsed: true,
       items: [
-      
+
             'targets/postgres',
             'targets/qdrant',
             'targets/lancedb',

src/ops/targets/qdrant.rs

@@ -139,6 +139,8 @@ struct VectorDef {
     metric: spec::VectorSimilarityMetric,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     multi_vector_comparator: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    method: Option<spec::VectorIndexMethod>,
 }
 #[derive(Debug, Clone, Serialize, Deserialize)]
 struct SetupState {
@@ -221,6 +223,26 @@ impl SetupChange {
                         vector_def.vector_size as u64,
                         embedding_metric_to_qdrant(vector_def.metric)?,
                     );
+                    if let Some(method) = &vector_def.method {
+                        match method {
+                            spec::VectorIndexMethod::Hnsw { m, ef_construction } => {
+                                if let Some(m_val) = m {
+                                    params = params.hnsw_m(*m_val as u64);
+                                }
+                                if let Some(ef_val) = ef_construction {
+                                    params = params.hnsw_ef_construct(*ef_val as u64);
+                                }
+                            }
+                            spec::VectorIndexMethod::IvfFlat { nlist } => {
+                                if let Some(nlist_val) = nlist {
+                                    params = params.ivf_flat_nlist(*nlist_val as u64);
+                                }
+                            }
+                            _ => {
+                                api_bail!("Unsupported vector index method for Qdrant");
+                            }
+                        }
+                    }
                     if let Some(multi_vector_comparator) = &vector_def.multi_vector_comparator {
                         params = params.multivector_config(MultiVectorConfigBuilder::new(
                             MultiVectorComparator::from_str_name(multi_vector_comparator)
@@ -422,8 +444,23 @@ impl TargetFactoryBase for Factory {
                             } else {
                                 api_bail!("Field `{}` specified more than once in vector index definition", vector_index.field_name);
                             }
-                            if vector_index.method.is_some() {
-                                api_bail!("Vector index method is not configurable for Qdrant yet");
+
+                            let vector_def_entry = vector_def.get_mut(&vector_index.field_name)
+                            .expect("VectorDef must exist here");
+
+                            vector_def_entry.vector_size = vector_index.vector_size;
+                            vector_def_entry.metric = vector_index.metric.clone();
+
+                            if let Some(method) = &vector_index.method {
+                                match method {
+                                    spec::VectorIndexMethod::Hnsw { .. } |
+                                    spec::VectorIndexMethod::IvfFlat { .. } => {
+                                        vector_def_entry.method = Some(method.clone());
+                                    }
+                                    _ => {
+                                        api_bail!("Vector index method is not supported for Qdrant");
+                                    }
+                                }
                             }
                         }
                         None => {