Cayenne 5.0 Milestone 3 Released
Aug 25, 2026

Apache Cayenne development team is glad to announce the third milestone of a new major version of Cayenne. The latest version can be downloaded from here.

NOTE: Please see Milestone 1 and Milestone 2 release notes for more information on Cayenne 5.

Full List of Changes in this Release

Changes/New Features

  • CAY-2861 Derby version upgrade
  • CAY-2912 Compact SQL logger
  • CAY-2954 Don’t wrap selecting queries in transactions
  • CAY-2956 Get rid of a dedicated adapter for Oracle 8
  • CAY-2957 Get rid of adapter for legacy HSQLDB <= 1.8
  • CAY-2962 Allow unconstrained VARCHAR
  • CAY-2963 Replace TypesHandler / types.xml with hardcoded map
  • CAY-2969 Extender API for “soft” delete
  • CAY-2970 Tighten deferred value resolution contract on commit
  • CAY-2971 Remove extra spaces within SQL parenthesis
  • CAY-2972 Fewer parentheses in generated SQL
  • CAY-2974 CayenneSqlException with a reference to translated query
  • CAY-2975 Mnemonic table aliases in generated SQL
  • CAY-2978 AI skill: “cayenne-model-naming”
  • CAY-2979 AI skill: “cayenne-full-db-sync”
  • CAY-2980 Improve model name generation
  • CAY-2981 Remove DataNode from XML mapping
  • CAY-2982 Modeler: when upgrading projects allow upgraders to send outcome messages
  • CAY-2983 CayenneDataSource: Public-facing DataSource builder
  • CAY-2984 Remove “DataChannel” injectable dependency
  • CAY-2985 DataDomain init and structure cleanup
  • CAY-2986 Cgen to run unconditionally
  • CAY-2987 DataNode to own PkGenerator
  • CAY-2989 Upgrade MCP SDK to 2.0
  • CAY-2992 dbimport: support postgres drivers newer than 42.7.4
  • CAY-2994 cgen: improve path handling
  • CAY-2995 Migrate Modeler to FlatLaf library

Bug Fixes

  • CAY-2892 Modeler: Exception when deleting a callback
  • CAY-2941 Modeler won’t start on Windows on Java 25
  • CAY-2958 Empty join is saved
  • CAY-2959 Modeler: DbRelationship dialog “Cancel” doesn’t cancel
  • CAY-2960 Undoing renamed relationship change throws
  • CAY-2961 PostgreSQL “text” column is reverse-engineered as CLOB
  • CAY-2964 ClassCastException for non-generated meaningful PKs
  • CAY-2965 MCP Cgen should not fail on an absent “” tag
  • CAY-2966 “comment” field is lost when upgrading from v10 to v12
  • CAY-2967 SQLTemplate/SQLSelect broken pagination
  • CAY-2968 Vertical Inheritance: INSERT instead of UPDATE after updating flattened attribute
  • CAY-2973 Exception trying to copy/paste a callback
  • CAY-2976 Exception creating a relationship for an Incomplete ObjEntity
  • CAY-2977 DbImport confused by multi-key relationships
  • CAY-2988 Iterated queries commit transactions they don’t own
  • CAY-2990 Gradle plugin tests are failing on Windows
Next: Cayenne 5.0 Milestone 2 Released