RSS All releases of Apache MetaModel (incubation)

Release Notes: First official Apache Incubator release. Faster CsvDataContext implementation for single-line values. The convention for file based DataContexts has been changed to use the folder name as the schema name. Improvements in the fluent Query builder API. Renames the package hierarchy from org.eobjects.metamodel to org.apache.metamodel.

Release Notes: This release adds a module for querying and updating installations, backed by the Web services. It adds a module for querying SugarCRM installations, backed by SugarCRM Web services. It optimizes support for DB2 queries with firstRow and maxRows properties set, yielding a ROW_NUMBER query in the background database interaction.

Release Notes: Many query parser improvements, including parsing column names with dots, mixed case clause declarations, select DISTINCT queries, select item aliases, and selecting everything from multiple from items. It also fixes two bugs: an issue with interpreting CHAR types as strings, and inclusion of function names (if available) in TableModel header names.

  •  27 Nov 2012 04:29

Release Notes: This release fixes timestamp literals on DB2's SQL-dialect.

Release Notes: This release drastically improves the performance of "DELETE FROM" statements on CSV files. It adds mapping of unavailable-to-available data types when issuing "CREATE TABLE" statements containing unavailable data types on e.g. DB2 or PostgreSQL. It fixes a bug pertaining to multi-threaded execution of compiled JDBC queries. A pool of prepared statements has been created to ensure parallel execution of compiled queries. A bug has been fixed pertaining to proper quoting of HAVING clause operands when the data type of the aggregate function is different from the data type of the functions argument.

  •  09 Oct 2012 19:39

Release Notes: Queries can now be compiled, preparing them for execution with varying parameter values. For JDBC databases, this will provide prepared statement-like functionality. For other datastores, it will simply make query reuse simpler. DataSet index caching has been implemented, making lookup by column or by "select item" faster and constant-time.

Release Notes: This release provided full support for CRUD operations on JDBC databases, CSV files, Excel spreadsheets, and NoSQL stores. CREATE TABLE, DROP TABLE, UPDATE, and DELETE FROM operations were added. Support for LIST and MAP column types (common in NoSQL stores) was added. Awareness of primary key columns was implemented (especially useful for UPDATE operations). Support for plain Java collections as datastores (LINQ style) was added. Full support for CouchDB databases was provided. Several maturing improvements were made in the API's syntax and semantics.

  •  01 Mar 2012 23:46

Release Notes: The MongoDB module now supports having Maps and Lists as column types. Query filters now support logical AND operators in addition to the existing OR operators. The DataContext.getColumnByQualifiedLabel(...) method is now fault-tolerant towards case differences. DataSets are now automatically closed when garbage collected. A stack overflow bug in the DataContextFactory.createExcelDataContext(...) method has been fixed.

Release Notes: This release introduces an interceptor layer for adapting and monitoring any query or update to your data. It greatly improves JDBC insert performance by using batch inserts instead of regular statements. It sanitizes the type conversion API to use the new interceptor layer.

  •  30 Nov 2011 23:20

Release Notes: A significant new release, containing support for MongoDB databases (both read and write) and XPath/SAX-based reading of XML files as tables. It contains a few bugfixes.


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