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Changelog.md

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1.3.0 / 2023-06-02

  • New features
    • Upgrade to the latest Mondrian version 9.3.0.0 with additional patches
    • Additional Mondrian patches and improvements
      • Support for ClickHouse database
      • Support for MariaDB ColumnStore engine
      • Improve Aggregate performance of large compound slicers when mondrian.rolap.EnableInMemoryRollup=false
      • Improve performance of Mondrian member property value lookup
      • Set dynamic Mondrian connection pool size based on mondrian.rolap.maxSqlThreads property
      • Skip registration of MondrianOlap4jDriver if mondrian.olap4j.registerDriver=false
      • Enable Mondrian supportsMultiValueInExpr for PostgreSQL and Oracle
    • Upgrade to log4j2
    • Support instance parameter for SQL Server connection
    • Allow to specify high_cardinality for dimension
    • Remove deprecated jTDS driver support, use MS JDBC driver instead
    • Remove user defined functions and formatters in JavaScript and CoffeeScript as they are not supported since JVM 8
    • Upgrade tests to use the later ActiveRecord and RSpec versions
    • Tested with JRuby 9.4 and JVM 17
  • Bug fixes
    • Patch for MONDRIAN-2714 (fixed support for MySQL JDBC driver version 8.0.23)

1.2.0 / 2021-03-06

  • New features
    • Upgrade to the latest Mondrian version 9.1.0.0
    • Improved Vertica and Snowflake tests to use bulk data loading
    • Remove support of LucidDB (which is abandoned a long time ago)
    • Improve bigint key columns support
    • Add MySQL 8 JDBC driver support
    • Tested with JRuby 9.2.14.0
    • Remove JRuby 1.7 support

1.1.0 / 2019-11-09

  • New features
    • Upgrade to the latest Mondrian version 8.3.0.5
    • Tested with JRuby 9.2.9.0
    • Set query specific timeout
    • Support for Vertica and Snowflake databases
  • Bug fixes
    • Handle and wrap TokenMgrError exception
    • Patch for MONDRIAN-2660
    • Patch for MONDRIAN-2661

1.0.0 / 2019-03-04

  • New features
    • Upgrade to the latest Mondrian version 8.2.0.4
    • Desupport Java 7, added support for Java 11, tested with JRuby 9.2.6.0
    • Remove deprecated NativeException, Fixnum
    • Added Mondrian query profiling option
    • Added connection flush_schema method and flush_schema(schema_key) class method
    • Added pin_schema_timeout connection parameter
  • Bug fixes
    • Fixed parsing of drill through queries with newlines
    • Do not log Mondrian errors on the console
    • Fixed handling of dimension names with escaped ]
    • Patch for MONDRIAN-2641

0.9.0 / 2017-10-07

  • New features
    • Upgraded to the latest Mondrian version 3.14.0.5
    • Added an annotations_hash method for schema elements
  • Bug fixes
    • Fixed drill through SQL query generation
    • Set a single role as a union role - used as a workaround for a Mondrian bug

0.8.0 / 2016-10-26

  • New features
    • upgraded to the latest Mondrian version 3.12.0.6
    • added flush_region_cache_with_segments and flush_region_cache_with_full_names methods for partial clearing of the cache
    • added Name() and Property() extensions for drill_through return fields
  • Bug fixes
    • fixed retrieving of drill through results with Clob values

0.7.0 / 2015-12-12

  • New features
    • upgraded to latest the latest Mondrian version 3.11
    • removed Java 6 support
    • fixes for JRuby 9.0 support
    • added a query builder method "distinct"
  • Improvements
    • added annotations for dimension_usage and virtual_cube_dimension schema elements
  • Bug fixes
    • fixed the order of axis aliases - columns, rows, pages, chapters, sections

0.6.0 / 2014-11-10

  • New features
    • upgraded to latest Mondrian 3.8.0 version
    • connection with generic JDBC driver using jdbc_driver and jdbc_url parameters
    • added hierarchy and parent attributes for calculated member schema definition element
    • added visible attribute for cube, dimension, virtual_cube_dimension, hierarchy and level schema definition elements
    • added query builder generate method
    • added schema parameters and query execution with parameters
    • updated specs to pass on Java 8
  • Improvements
    • set defaultRowPrefetch property for Oracle connection
  • Bug fixes
    • fixed result drill_through method with just all members selection

0.5.0 / 2013-11-29

  • New features
    • upgraded to latest Mondrian 3.5 version (build from 2013-07-31)
    • added shutdown_static_mondrian_server! method
    • add schema element annotations in schema definition
    • set connection locale
    • added support for schema elements caption
    • added shared dimension schema definition methods
    • added virtual cube schema definition methods
  • Improvements
    • connection execute_drill_through method
    • define shared user defined cell formatters
    • set default hierarchy :has_all and level :unique_members attributes
    • by default use sum aggregator for measure in schema definition
    • support Oracle connection using slash and service name as database name
  • Bug fixes
    • render cube XML fragment before calculated members in generated XML schema
    • generate XML with UTF-8 encoding

0.4.0 / 2012-12-03

  • New features
    • upgraded to latest Mondrian 3.5 version (build from 2012-11-29) as well as corresponding olap4j 1.0.1 version
    • support for JRuby 1.7 and Java 7 VM
    • user defined functions and formatters in JavaScript, CoffeeScript and Ruby
    • shared user defined functions in Ruby
    • all exceptions are wrapped in Mondrian::OLAP::Error exception with root_cause_message method
    • drill through from result cell to source measure and dimension table rows
    • support for Mondrian schema roles to limit cube data access
  • Improvements
    • get description of cube, dimension, hierarchy and level from schema definition
    • visible? method for measures and calculated members
    • nonempty_crossjoin query builder method
    • schema definition with nested table joins
    • added approx_row_count schema level attribute

0.3.0 / 2011-11-12

  • New features
    • upgraded to Mondrian 3.3.0 version (latest shapshot with additional bug fixes) as well as corresponding olap4j 1.0.0 version
    • support for SQL Server (jTDS and Microsoft drivers)
    • aggregates definition in schema
    • possibility to include XML fragments in schema (e.g. to paste XML for aggregates that is generated by Mondrian aggregation designer)
    • define level properties in schema
    • sql element for table element in schema (to define custom WHERE conditions for dimensions or fact table)
    • view element in schema (to define custom SQL SELECT statements instead of existing table)
    • measure_expression element in schema (to define custom SQL expression for measure instead of fact column)
    • allow crossjoin of where conditions as well as where with several same dimension members
  • Improvements
    • use latest Nokogiri 1.5.0 version

0.2.0 / 2011-07-01

  • New features
    • support for LucidDB database
  • Improvements
    • only set log4j configuration file if not set already (possible to override e.g. Mondrian debugging settings)
    • result.to_html(:formatted=>true) will return formatted results
    • set Unicode encoding for mysql connection
    • format_string attribute and formula element for calculated members
    • :use_content_checksum connection option (by default set to true)
    • key_expression, name_expression, ordinal_expression elements with sql subelement support for levels
    • :upcase_data_dictionary option for schema definition
  • Bug fixes
    • fixed examples in README
    • correctly quote CatalogContent in connection string (to allow usage of semicolons in generated XML catalog)
    • workarounds for issues with Java classloader when using in production mode with jruby-rack
    • construct correct file path on Windows

0.1.0 / 2011-03-18

  • Initial release
    • support for MySQL, PostgreSQL and Oracle databases