Add neo4j vector memory template (#12993)

templates/neo4j-vector-memory/ingest.py

@@ -0,0 +1,23 @@
+from pathlib import Path
+
+from langchain.document_loaders import TextLoader
+from langchain.embeddings.openai import OpenAIEmbeddings
+from langchain.text_splitter import TokenTextSplitter
+from langchain.vectorstores import Neo4jVector
+
+txt_path = Path(__file__).parent / "dune.txt"
+
+# Load the text file
+loader = TextLoader(str(txt_path))
+raw_documents = loader.load()
+
+# Define chunking strategy
+splitter = TokenTextSplitter(chunk_size=512, chunk_overlap=24)
+documents = splitter.split_documents(raw_documents)
+
+# Calculate embedding values and store them in the graph
+Neo4jVector.from_documents(
+    documents,
+    OpenAIEmbeddings(),
+    index_name="dune",
+)