DATACASS-343 - Introduce Query and Update objects. #101
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Prepare issue branch.
We now support fluent Query creation for Cassandra queries via Query. Query predicates are built with Criteria and Query that also take QueryOptions, Sort and limiting. Query accepts a column specification to specify column inclusion/exclusion along with function specification (TTL, WRITETIME). Query query = Query.query(Criteria.where("userId").in("heisenberg", "mike")).and(Criteria.where("age").gt("51")); query = query.columns(Columns.from("userId", "age").include("firstname")) .with(new Sort("age")) .with(QueryOptions.builder().fetchSize(10).build()) .withAllowFiltering() .limit(10); List<Person> people = operations.select(query, Person.class); Query can be used with select, stream, update and delete Template API methods. We now support fluent update creation via Update to specify individual update actions for a selection of rows. Update supports the common Cassandra update assignments for singular, collection and map-typed columns and can increment/decrement counter columns. Update update = Update.update("lastname", "White") .addTo("firearms").appendAll("Ruger LCR", "M60") .remove("propertiesSet", "trust") .clear("friends"); Query query = Query.query(Criteria.where("id").is("heisenberg")); template.update(query, update, Person.class); Update can be used with the update Template API methods. …methods. We now use Query and Statement instead of formatted String queries to construct executable repository query methods. Using Query allows introspection for column name remapping and value conversion before constructing a Select statement. String queries are now rendered as SimpleStatement with bind markers. Values are attached to the statement and converted to the wire representation on statement execution. Previously, all queries were rendered to String and values were formatted upfront to a String representation.
Simplify API.
Enhance JavaDoc. Rename single-letter parameters to meaningful names. Rename UpdateOp to AssignmentOp as single update operations are called assignments in CQL.
Introduce factory methods for Query and Update. Remove ChainedCriteria. Refactor Query and Update to immutable objects. Introduce Operator abstraction for Predicate.
mp911de force-pushed the issue/DATACASS-343 branch from 79ba7e1 to e3d8137 Compare 
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit. This suggestion is invalid because no changes were made to the code. Suggestions cannot be applied while the pull request is closed. Suggestions cannot be applied while viewing a subset of changes. Only one suggestion per line can be applied in a batch. Add this suggestion to a batch that can be applied as a single commit. Applying suggestions on deleted lines is not supported. You must change the existing code in this line in order to create a valid suggestion. Outdated suggestions cannot be applied. This suggestion has been applied or marked resolved. Suggestions cannot be applied from pending reviews. Suggestions cannot be applied on multi-line comments. Suggestions cannot be applied while the pull request is queued to merge. Suggestion cannot be applied right now. Please check back later.
We now support fluent Query creation for Cassandra queries via Query. Query predicates are built with Criteria and Query that also take QueryOptions, Sort and limiting. Query accepts a column specification to specify column inclusion/exclusion along with function specification (TTL, WRITETIME).
Query can be used with
select,stream,updateanddeleteTemplate API methods.We now support fluent update creation via Update to specify individual update actions for a selection of rows.
Update supports the common Cassandra update assignments for singular, collection and map-typed columns and can increment/decrement counter columns.
Related ticket: DATACASS-343
Todo: