v0.6.0: Added temporal pattern matching + Flink 1.9.3

• Changed Flink version to 1.9.3
• Temporal Pattern Matching using Temporal-GDL added
• Temporal verify operator added
• More Gelly-based algorithms are available for TemporalGraph
• Min and Max aggregations can now be applied on date and datetime types
• Duration aggregations have now an optional unit parameter to define a time unit (e.g., Minutes)
• Indexed CSV Source/Sink added (also for temporal graphs)
• Some bugfixes in MinimalCSVImporter

v0.5.2 Added Maven Archetype

• Improved testing and stability
• improved gdl error handling
• added basic vertex deduplication
• implemented distributed graph layouting
• moved capf into new repository gradoop-capf
• improved temporal graph handling

v0.5.1: Added TPGM

• gradoop-temporal module added
  • Temporal Property Graph Model (TPGM) implementation
  • diff and snapshot operators for TPGM
  • some commonly used temporal predicates
  • examples for temporal operator usages
  • equals and print support
  • support for generified operators
• Fixed bug in cypher constructor patterns
• Reorganized hbase dependency
  • Remove hbase dependencies from gradoop-flink
• Fixed incorrectly escaped chars in DOT output
• Added overwrite parameter for CSV output
• Added new grouping operator using key functions (KeyedGrouping)
  • Added key functions for grouping on temporal infos

v0.5.0: Major API changes for upcoming table and temporal graph support

• API Changes - Interfaces EPGMEdge, EPGMVertex, EPGMGraphHead renamed to Edge, Vertex and GraphHead
• API Changes - Instance classes Edge, Vertex and GraphHead renamed to EPGMEdge, EPGMVertex, EPGMGraphHead
• Logical Graph Operators generalized
• Graph Collection operators generalized
• VerifyGraph(s)Containment operator added
• gradoop-examples module is refactored
• ElementFactories are now part of the BaseFactory (not part of config)
• Enhanced comparison of property values
• Deprecated JSON source and sink removed
• Support for Maven 3.6

v0.4.5: Integated OpenCypher Support via CAPF

• Upgrade Flink dependency from 1.7.0 to 1.7.2
• Integration of Cypher on Apache Flink (CAPF) to support OpenCypher queries
• Improvement of CSVDataSource
• Added Graph ETL operators to module gradoop-data-integration
• Added Degree Centrality operator
• Added Random Walk operator
• Added Verify operator to remove dangling edges
• Refactored PropertyValue class according to strategy pattern
• Added overwrite support for HBaseDataSink

v0.4.4: Jump to Flink 1.7.0

• Upgrade Flink dependency from 1.6.0 to 1.7.0
• Generalized Subgraph, Transformation and Property Transformation operators
• Generalized MetaData construct
• Refactored GradoopId to no longer use MongoDB
• Added RollUp example
• Added support to construct GraphCollection from mutliple LogicalGraphs
• Added simple importers for CSV and JSON files

v0.4.3: Jump to Flink 1.6.0

• Upgrade Flink dependency from 1.5.0 to 1.6.0
• gradoop-data-integration module added
• Fixed bugs in IndexedCSVDataSink
• Sampling Benchmarks added
• Datagen-package removed from Gradoop
• Clustering coefficient computation addded
• Triangle counting added
• Rollup-Operator added
• Unified aggregate functions now applicable to both aggregate and grouping operator

v0.4.2: GraphCollection support for CSV Source/Sink

• PageRank sampling added
• Mockito added for testing support
• Multiple aggregation functions in a single aggregation operator
• GraphCollection support for CSV Source/Sink
• LGTM code quality badge
• PropertyTransformation operator added
• Weakly Connected Components runner added
• CSV delimiter escaping

v0.4.1: HBase Property Pushdown added

• Cypher, Subgraph and SNA Benchmarks added
• Predicate pushdown for HBase available
• Split property type and value in HBase table layout
• NULL and Set support in PropertyValues
• Code coverage report
• Support graphs without edges
• .print() added for LogicalGraph and GraphCollection
• Aggregation example added
• Sampling algorithms extended incl. Graph density computation

v0.4.0: Jump to Flink 1.5.0

• Upgrade Flink from 1.3.1 to 1.5.0
• JSONDataSource and JSONDataSink are now marked as deprecated
• CSVDataSource and CSVDataSink supporting all available property value types
• IndexedCSVDataSink added
• Added Gradoop-Store module with Apache Accumulo and HBase support
• Added Store Api with manual predicate pushdown (for Accumulo DataSource)