ZPostgreSqlAnalyser.pas

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{*********************************************************}
{                                                         }
{                 Zeos Database Objects                   }
{            SQL Statements Analysing classes             }
{                                                         }
{         Originally written by Sergey Seroukhov          }
{                                                         }
{*********************************************************}

{@********************************************************}
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unit ZPostgreSqlAnalyser;

interface

{$I ZParseSql.inc}

uses Classes, ZGenericSqlAnalyser;

type

  {** Implements an PostgreSQL statements analyser. }
  TZPostgreSQLStatementAnalyser = class (TZGenericStatementAnalyser)
  public
    constructor Create;
  end;

implementation

const
  {** The generic constants.}
  PostgreSQLSectionNames: array[0..12] of string = (
    'SELECT', 'UPDATE', 'DELETE', 'INSERT', 'FROM',
    'WHERE', 'INTO', 'GROUP*BY', 'HAVING', 'ORDER*BY',
    'FOR*UPDATE', 'LIMIT', 'OFFSET'
  );
  PostgreSQLSelectOptions: array[0..1] of string = (
    'DISTINCT', 'ALL'
  );
  PostgreSQLFromJoins: array[0..7] of string = (
    'NATURAL', 'RIGHT', 'LEFT', 'INNER', 'OUTER', 'JOIN',
    'FULL', 'CROSS'
  );
  PostgreSQLFromClauses: array[0..1] of string = (
    'ON', 'USING'
  );

{ TZPostgreSQLStatementAnalyser }

{**
  Creates the object and assignes the main properties.
}
constructor TZPostgreSQLStatementAnalyser.Create;
begin
  SectionNames := ArrayToStrings(PostgreSQLSectionNames);
  SelectOptions := ArrayToStrings(PostgreSQLSelectOptions);
  FromJoins := ArrayToStrings(PostgreSQLFromJoins);
  FromClauses := ArrayToStrings(PostgreSQLFromClauses);
end;

end.