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API Reference

The HecateAPI implements the 3 basic use-cases of the system.

public Schema parse(String path);

   This method implements the parsing process. It receives 
   as input the path of a schema file and extracts 
   the needed information.
   
   @param path The path of the SQL data definition file.
   @return The schema of the database as a data structure.

public void export(DiffResult diffResult, Transitions transitions, String operation);

   This method implements the export process. It can be 
   which extracts and stores the various tables and 
   transitions information on different files.
    
   @param diffResult Data structure that stores all the information
   of a difference between 2 schemas
   @param transitions Data structure that stores a list of transitions.
   @param operation One of the following:
   
   metrics: save metrics
   tables: save tables info
   ransitions: save transitions information

public DiffResult getDifference(Schema schema1, Schema schema2);

   This function performs the main algorithm for
   finding the differences between two schemas. 
   The algorithm is a modification of	the SortMergeJoin 
   algorithm found at DBMS's for joining two tables.
   
   @param schema1 The original schema.
   @param schema2 The modified version of the original schema.
   @return The schema of the database as a data structure.

Authors

  • Nikos Koufos
  • Thanos Pappas
  • Michalis Sotiriou