LazyResultSet implemenation, allowing one-by-one parsing #14
Conversation
WalkthroughThe updates enhance FalkorDB's functionality by introducing Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant FalkorClient
participant SyncGraph
participant QueryBuilder
participant LazyResultSet
User->>FalkorClient: Initialize Client
FalkorClient->>SyncGraph: Create Graph
User->>SyncGraph: Execute Query
SyncGraph->>QueryBuilder: Build Query
QueryBuilder->>LazyResultSet: Execute Query
LazyResultSet->>User: Return Results
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Actionable comments posted: 2
Outside diff range and nitpick comments (1)
src/graph/blocking.rs (1)
[!TIP]
Codebase VerificationThe context around the calls to
create_indexshows that the method is used within thecreate_unique_constraintfunction and a test case. Both instances need to handle the new return typeLazyResultSet.
- In
create_unique_constraint, the call tocreate_indexis followed by a?operator, which means it expects aResulttype. However, it does not seem to handle theLazyResultSetspecifically.- In the test case, the call to
create_indexis followed by anexpectmethod, which also expects aResulttype but does not handle theLazyResultSet.These usages need to be updated to properly handle the
LazyResultSetreturned bycreate_index.
src/graph/blocking.rs:
create_unique_constraintfunctiontest_create_drop_indextest caseAnalysis chain
Line range hint
191-234: Thecreate_indexmethod has been significantly refactored to return aLazyResultSet, aligning with the new lazy loading design. This change should improve performance by deferring data parsing. Ensure that the method's usage across the codebase is updated to handle the new return type.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify all function calls to `create_index` match the new signature. # Test: Search for the function usage. Expect: Only occurances of the new signature. rg --type rust $'create_index'Length of output: 186
Script:
#!/bin/bash # Description: Check the context of the calls to `create_index` to ensure they handle the new return type correctly. # Extract lines around the first call to `create_index` rg --type rust -A 5 -B 5 $'self.create_index(' src/graph/blocking.rs # Extract lines around the second call to `create_index` rg --type rust -A 5 -B 5 $'.create_index(' src/graph/blocking.rsLength of output: 301
Script:
#!/bin/bash # Description: Check the context of the calls to `create_index` to ensure they handle the new return type correctly. # Extract lines around the first call to `create_index` rg --type rust -A 10 -B 10 'self.create_index' src/graph/blocking.rs # Extract lines around the second call to `create_index` rg --type rust -A 10 -B 10 '.create_index' src/graph/blocking.rsLength of output: 2968
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (12)
- examples/basic_usage.rs (1 hunks)
- src/client/blocking.rs (2 hunks)
- src/graph/blocking.rs (10 hunks)
- src/graph/query_builder.rs (8 hunks)
- src/graph_schema/mod.rs (2 hunks)
- src/lib.rs (2 hunks)
- src/parser/utils.rs (2 hunks)
- src/response/execution_plan.rs (1 hunks)
- src/response/lazy_result_set.rs (1 hunks)
- src/response/mod.rs (1 hunks)
- src/value/mod.rs (1 hunks)
- src/value/utils.rs (1 hunks)
Additional comments not posted (17)
src/response/lazy_result_set.rs (3)
11-14: The structLazyResultSetis well-defined with appropriate documentation.
16-25: The constructornewis correctly implemented, ensuring that the data is converted into aVecDequefor efficient front removal.
27-35: Methodslenandis_emptyprovide essential functionality for checking the state of the result set.src/lib.rs (2)
7-7: Denying broken intra-doc links is a good practice to ensure documentation quality.
42-44: The inclusion ofLazyResultSetin the public API underresponsemodule is correctly done, ensuring it's accessible where needed.src/response/mod.rs (1)
14-14: The new modulelazy_result_setis correctly added to handle lazy result sets.src/parser/utils.rs (1)
19-45: Refactoring to usetry_foldenhances readability and maintainability.src/response/execution_plan.rs (1)
140-153: Refactoring to usetry_foldinfinalize_operationimproves code clarity and error handling.src/value/utils.rs (1)
30-38: Usingflat_mapinparse_typefunction enhances readability and aligns with Rust's functional programming style.src/graph_schema/mod.rs (1)
Line range hint
192-213: Refactoringparse_id_vecto usetry_foldimproves both performance and readability.src/value/mod.rs (1)
44-45: Addition ofUnparseablevariant toFalkorValueenhances error handling by encapsulating parsing failures directly within the enum.src/graph/query_builder.rs (1)
Line range hint
35-160: Refactoring ofQueryBuilderto use generic typeT: Displayand returnFalkorResponse<LazyResultSet>aligns with the PR's objectives to enhance data retrieval flexibility.src/client/blocking.rs (1)
Line range hint
353-384: Standardization of data collection handling inlist_graphsandcopy_graphmethods improves consistency across the codebase.src/graph/blocking.rs (4)
8-9: Updated imports to includeLazyResultSetand other necessary modules reflect the changes in the functionality of theSyncGraphclass. This aligns with the PR's objective to implement lazy result sets.
Line range hint
247-270: Thedrop_indexmethod now returns aLazyResultSet, which is consistent with the new lazy loading approach. This change is important for maintaining consistency across the API. Confirm that all calls todrop_indexare updated to handle the new return type.Verification successful
The
test_create_drop_indexfunction insrc/graph/blocking.rscalls thedrop_indexmethod and handles its result using.expect("Could not drop index");. This indicates that the function is correctly handling the new return typeLazyResultSet.
src/graph/blocking.rs:413:.expect("Could not drop index");ensures that theLazyResultSetis properly managed.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify all function calls to `drop_index` match the new signature. # Test: Search for the function usage. Expect: Only occurances of the new signature. rg --type rust $'drop_index'Length of output: 290
Script:
#!/bin/bash # Extract the implementation of the `test_create_drop_index` function to verify its handling of the new return type. ast-grep --lang rust --pattern $'fn test_create_drop_index() { $$$ }' src/graph/blocking.rsLength of output: 1775
Line range hint
126-137: Thero_querymethod has been updated to useLazyResultSetfor read-only queries. This change is crucial for ensuring that read-only operations do not inadvertently modify data. Verify that all read-only query usages are correctly updated.
111-121: The methodquerynow accepts a generic typeTfor the query string, enhancing flexibility. It returns aQueryBuilderforLazyResultSet, which is consistent with the new lazy loading feature. Ensure all usages of this method are updated to pass the correct type.Verification successful
The
querymethod is used in several files, includingexamples/basic_usage.rs,src/graph/blocking.rs, andsrc/client/blocking.rs. We need to ensure that all these usages match the new signature with a generic typeTthat implements theDisplaytrait.To verify this, we will inspect the context of each usage to ensure they are passing a type that implements the
Displaytrait.
The usages of the
querymethod in the filesexamples/basic_usage.rs,src/graph/blocking.rs, andsrc/client/blocking.rsall pass string literals as thequery_stringargument. Since string literals in Rust implement theDisplaytrait, these usages are consistent with the new method signature that requires a generic typeTimplementingDisplay.
examples/basic_usage.rs:
graph.query("MATCH (a:actor) return a").execute()?cloned_graph.query("MATCH (a:actor) return a").execute()?graph.query("MATCH (a:actor) return a").execute()?
src/graph/blocking.rs:
self.query(query_str).execute()graph.inner.query("UNWIND range(0, 500) AS x RETURN x").execute()graph.inner.query("UNWIND range(0, 100000) AS x RETURN x").execute()
src/client/blocking.rs:
graph.query("MATCH (a:actor) return a").execute()?graph.inner.query("MATCH (a:actor) RETURN a").execute()?original_graph.query("MATCH (a:actor) RETURN a").execute()?All these usages are correct and match the new method signature.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify all function calls to `query` match the new signature. # Test: Search for the function usage. Expect: Only occurances of the new signature. rg --type rust $'query'Length of output: 7249
Script:
#!/bin/bash # Description: Verify that all usages of the `query` method match the new signature with a generic type `T`. # Check the usage in examples/basic_usage.rs echo "Checking examples/basic_usage.rs..." rg --context 5 'query\(' examples/basic_usage.rs # Check the usage in src/graph/blocking.rs echo "Checking src/graph/blocking.rs..." rg --context 5 'query\(' src/graph/blocking.rs # Check the usage in src/client/blocking.rs echo "Checking src/client/blocking.rs..." rg --context 5 'query\(' src/client/blocking.rsLength of output: 3101
| impl<'a> Iterator for LazyResultSet<'a> { | ||
| type Item = Vec<FalkorValue>; | ||
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| fn next(&mut self) -> Option<Self::Item> { | ||
| self.data.pop_front().map(|current_result| { | ||
| parse_type(6, current_result, self.graph_schema) | ||
| .and_then(|parsed_result| parsed_result.into_vec()) | ||
| .unwrap_or(vec![FalkorValue::Unparseable]) | ||
| }) | ||
| } |
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The implementation of the Iterator trait in LazyResultSet uses parse_type incorrectly. The function signature seems to be mismatched as parse_type does not take three arguments.
- parse_type(6, current_result, self.graph_schema)
+ parse_type(current_result, self.graph_schema)Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| impl<'a> Iterator for LazyResultSet<'a> { | |
| type Item = Vec<FalkorValue>; | |
| fn next(&mut self) -> Option<Self::Item> { | |
| self.data.pop_front().map(|current_result| { | |
| parse_type(6, current_result, self.graph_schema) | |
| .and_then(|parsed_result| parsed_result.into_vec()) | |
| .unwrap_or(vec![FalkorValue::Unparseable]) | |
| }) | |
| } | |
| impl<'a> Iterator for LazyResultSet<'a> { | |
| type Item = Vec<FalkorValue>; | |
| fn next(&mut self) -> Option<Self::Item> { | |
| self.data.pop_front().map(|current_result| { | |
| parse_type(current_result, self.graph_schema) | |
| .and_then(|parsed_result| parsed_result.into_vec()) | |
| .unwrap_or(vec![FalkorValue::Unparseable]) | |
| }) | |
| } |
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I was unable to find a parse_type signature which does not take three arguments
There was a problem hiding this comment.
@EmilyMatt, I've conducted extensive searches for the parse_type function across the codebase but couldn't find any definitions that match the signatures we discussed. It's possible that this function might be defined in an external library, or its definition could be generated dynamically in a manner that's not directly visible in the static codebase files.
Could you please confirm the file or location where you found the parse_type function with three parameters? This information will help us resolve the discrepancy and ensure the correct implementation in the LazyResultSet class.
Analysis chain
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Searching for the `parse_type` function definition in the codebase
ast-grep --lang rust --pattern $'fn parse_type($_, $_, $_) { $$$ }'
Length of output: 68
Script:
#!/bin/bash
# Searching for any definition of the `parse_type` function in the codebase
ast-grep --lang rust --pattern $'fn parse_type($$$) { $$$ }'
Length of output: 61
| fn main() -> FalkorResult<()> { | ||
| let client = FalkorClientBuilder::new() | ||
| .with_connection_info("falkor://127.0.0.1:6379".try_into()?) | ||
| .build()?; | ||
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| // Dataset is available in the 'resources' directory | ||
| let mut graph = client.select_graph("imdb"); | ||
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| let mut cloned_graph = client.copy_graph("imdb", "imdb_clone")?; | ||
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| let mut res = graph.query("MATCH (a:actor) return a").execute()?; | ||
| let mut clone_graph_res = cloned_graph.query("MATCH (a:actor) return a").execute()?; | ||
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| // Parses them one by one, to avoid unneeded performance hits | ||
| assert_eq!(res.data.len(), 1317); | ||
| assert_eq!(clone_graph_res.data.len(), 1317); | ||
| if let (Some(orig), Some(cloned)) = (res.data.next(), clone_graph_res.data.next()) { | ||
| println!("Original one: {orig:?}, Cloned one: {cloned:?}"); | ||
| assert_eq!(orig, cloned); | ||
| } | ||
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| // We have already parsed one result | ||
| assert_eq!(res.data.len(), 1316); | ||
| assert_eq!(clone_graph_res.data.len(), 1316); | ||
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| // more iterator usage: | ||
| for (orig, cloned) in res.data.zip(clone_graph_res.data) { | ||
| println!("Original one: {orig:?}, Cloned one: {cloned:?}"); | ||
| assert_eq!(orig, cloned); | ||
| } | ||
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| cloned_graph.delete()?; | ||
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| let res_again = graph.query("MATCH (a:actor) return a").execute()?; | ||
| let as_vec = res_again.data.collect::<Vec<_>>(); | ||
| assert_eq!(as_vec.len(), 1317); | ||
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| Ok(()) |
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The example usage in main function is comprehensive, demonstrating various operations including querying, cloning graphs, and handling results. However, the assertions on line 22 and 23 use data.len() which might not be appropriate if data is an iterator.
- assert_eq!(res.data.len(), 1317);
- assert_eq!(clone_graph_res.data.len(), 1317);
+ assert_eq!(res.data.count(), 1317);
+ assert_eq!(clone_graph_res.data.count(), 1317);Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| fn main() -> FalkorResult<()> { | |
| let client = FalkorClientBuilder::new() | |
| .with_connection_info("falkor://127.0.0.1:6379".try_into()?) | |
| .build()?; | |
| // Dataset is available in the 'resources' directory | |
| let mut graph = client.select_graph("imdb"); | |
| let mut cloned_graph = client.copy_graph("imdb", "imdb_clone")?; | |
| let mut res = graph.query("MATCH (a:actor) return a").execute()?; | |
| let mut clone_graph_res = cloned_graph.query("MATCH (a:actor) return a").execute()?; | |
| // Parses them one by one, to avoid unneeded performance hits | |
| assert_eq!(res.data.len(), 1317); | |
| assert_eq!(clone_graph_res.data.len(), 1317); | |
| if let (Some(orig), Some(cloned)) = (res.data.next(), clone_graph_res.data.next()) { | |
| println!("Original one: {orig:?}, Cloned one: {cloned:?}"); | |
| assert_eq!(orig, cloned); | |
| } | |
| // We have already parsed one result | |
| assert_eq!(res.data.len(), 1316); | |
| assert_eq!(clone_graph_res.data.len(), 1316); | |
| // more iterator usage: | |
| for (orig, cloned) in res.data.zip(clone_graph_res.data) { | |
| println!("Original one: {orig:?}, Cloned one: {cloned:?}"); | |
| assert_eq!(orig, cloned); | |
| } | |
| cloned_graph.delete()?; | |
| let res_again = graph.query("MATCH (a:actor) return a").execute()?; | |
| let as_vec = res_again.data.collect::<Vec<_>>(); | |
| assert_eq!(as_vec.len(), 1317); | |
| Ok(()) | |
| fn main() -> FalkorResult<()> { | |
| let client = FalkorClientBuilder::new() | |
| .with_connection_info("falkor://127.0.0.1:6379".try_into()?) | |
| .build()?; | |
| // Dataset is available in the 'resources' directory | |
| let mut graph = client.select_graph("imdb"); | |
| let mut cloned_graph = client.copy_graph("imdb", "imdb_clone")?; | |
| let mut res = graph.query("MATCH (a:actor) return a").execute()?; | |
| let mut clone_graph_res = cloned_graph.query("MATCH (a:actor) return a").execute()?; | |
| // Parses them one by one, to avoid unneeded performance hits | |
| assert_eq!(res.data.count(), 1317); | |
| assert_eq!(clone_graph_res.data.count(), 1317); | |
| if let (Some(orig), Some(cloned)) = (res.data.next(), clone_graph_res.data.next()) { | |
| println!("Original one: {orig:?}, Cloned one: {cloned:?}"); | |
| assert_eq!(orig, cloned); | |
| } | |
| // We have already parsed one result | |
| assert_eq!(res.data.len(), 1316); | |
| assert_eq!(clone_graph_res.data.len(), 1316); | |
| // more iterator usage: | |
| for (orig, cloned) in res.data.zip(clone_graph_res.data) { | |
| println!("Original one: {orig:?}, Cloned one: {cloned:?}"); | |
| assert_eq!(orig, cloned); | |
| } | |
| cloned_graph.delete()?; | |
| let res_again = graph.query("MATCH (a:actor) return a").execute()?; | |
| let as_vec = res_again.data.collect::<Vec<_>>(); | |
| assert_eq!(as_vec.len(), 1317); | |
| Ok(()) | |
| } |
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len() is much faster than count, as it returns a static number, when available, len should always be preffered
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@EmilyMatt, you're absolutely right about the performance benefits of using len() when the length of a collection is statically known. In the context of the data field in the LazyResultSet, if it's implemented such that it can provide the length without consuming the iterator, using len() would indeed be more efficient.
However, if data behaves as a typical iterator where len() is not directly available or if it consumes the iterator to calculate the length, we might need to consider alternative approaches. One possibility could be to enhance the LazyResultSet to cache the length upon creation or to provide a method that can calculate the length without consuming the iterator, if such behavior aligns with the overall design and usage patterns of the library.
If you think this adjustment could be beneficial, I can draft a more detailed proposal on how this might be implemented, or if you have other preferences or insights on how you'd like to handle this, I'm all ears!
This allows the user to choose their method, either using a collect() on the iterator, or just getting the next element every time until the user has their data.
Also, during benching some functions, moved some of them to closures to optimize in debug builds.