forked from opengaussexamples/examples
120 lines
6.8 KiB
Java
120 lines
6.8 KiB
Java
|
|
import generator.OpenGaussGenerator;
|
|
import lexer.OracleLexer;
|
|
import parser.ast.ASTNode;
|
|
import parser.OracleParser;
|
|
|
|
|
|
public class Main {
|
|
public static void main(String[] args) {
|
|
// String sql = "CREATE TABLE employees (\n" +
|
|
// " employee_id NUMBER PRIMARY KEY,\n" +
|
|
// " first_name VARCHAR2(20) Check(first_name > '221'),\n" +
|
|
// " last_name VARCHAR2(25) Check (last_name != '12813@163.com'),\n" +
|
|
// " email VARCHAR2(25),\n" +
|
|
// " hire_date DATE,\n" +
|
|
// " CONSTRAINT chk_example CHECK (employee_id > 0)" +
|
|
// ");";
|
|
// String sql = "INSERT INTO employees (first_name, last_name, email) VALUES ('Jane', 'Smith', 'janesm@example.com');";
|
|
// String sql = "DROP TABLE employees CASCADE CONSTRAINTS;";
|
|
String sql = "SELECT e.first_name, d.department_name FROM employees e JOIN departments d Using e.department_id = d.department_id;";
|
|
// String sql = "employees e JOIN departments d ON e.department_id = d.department_id;";
|
|
// String sql = "UPDATE employees e\n" +
|
|
// "JOIN departments d using e.department_id = d.department_id\n" +
|
|
// "SET e.salary = e.salary * 1.10,\n" +
|
|
// " d.budget = d.budget * 1.10\n" +
|
|
// "WHERE d.department_name = 'Sales';";
|
|
// String sql = "DELETE FROM employees e\n" +
|
|
// "WHERE e.department_id IN (\n" +
|
|
// " SELECT d.department_id\n" +
|
|
// " FROM departments d\n" +
|
|
// " WHERE d.department_name = 'Sales'\n" +
|
|
// ");";
|
|
// String sql = "ALTER TABLE employees ADD email VARCHAR2(100) Check (email != '12813@163.com');";
|
|
// String sql = "CASE WHEN column2 > 0 THEN 'Positive' ELSE 'Non-positive' END";
|
|
// String sql = "CREATE OR REPLACE VIEW emp_dept_info AS SELECT e.first_name, e.last_name, d.department_name FROM employees e JOIN departments d Using e.department_id = d.department_id;";
|
|
// String sql = "IF v_salary >= 100000 THEN\n" +
|
|
// " v_bonus := v_salary * 0.1;\n" +
|
|
// " ELSIF v_salary >= 50000 THEN\n" +
|
|
// " v_bonus := v_salary * 0.08;\n" +
|
|
// " ELSIF v_salary >= 30000 THEN\n" +
|
|
// " v_bonus := v_salary * 0.05;\n" +
|
|
// " ELSE\n" +
|
|
// " v_bonus := v_salary * 0.03;\n" +
|
|
// " END IF;";
|
|
// String sql = "LOOP\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE(v_counter);\n" +
|
|
// " Continue;\n" +
|
|
// " v_counter := v_counter + 1;\n" +
|
|
// " EXIT WHEN v_counter > 10;\n" +
|
|
// " END LOOP;";
|
|
// String sql = "EXCEPTION\n" +
|
|
// " WHEN e_custom_exception THEN\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE('Caught an exception: Custom exception raised');\n" +
|
|
// " WHEN ZERO_DIVIDE THEN\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE('Caught an exception: Division by zero');\n" +
|
|
// " WHEN INVALID_NUMBER THEN\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE('Caught an exception: Invalid number');\n" +
|
|
// " WHEN OTHERS THEN\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE('Caught an exception: ' || SQLERRM);";
|
|
// String sql = "CREATE OR REPLACE PROCEDURE update_salary (\n" +
|
|
// " employee_id IN NUMBER,\n" +
|
|
// " new_salary IN OUT NUMBER\n" +
|
|
// " ) IS\n" +
|
|
// " v_employee NUMBER;\n" +
|
|
// " BEGIN\n" +
|
|
// " SELECT * INTO v_employee FROM employees WHERE employee_id = employee_id;\n" +
|
|
// "\n" +
|
|
// " IF new_salary < 3000 THEN\n" +
|
|
// " new_salary := new_salary * 1.1;\n" +
|
|
// " ELSE\n" +
|
|
// " new_salary := new_salary * 1.05;\n" +
|
|
// " END IF;\n" +
|
|
// "\n" +
|
|
// " UPDATE employees SET salary = new_salary WHERE employee_id = employee_id;\n" +
|
|
// " COMMIT;\n" +
|
|
// "\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE('Updated Salary: ' || new_salary);\n" +
|
|
// " EXCEPTION\n" +
|
|
// " WHEN NO_DATA_FOUND THEN\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE('Employee not found.');\n" +
|
|
// " WHEN TOO_MANY_ROWS THEN\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE('Multiple employees found.');\n" +
|
|
// " WHEN OTHERS THEN\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE('An error occurred: ' || SQLERRM);\n" +
|
|
// " END update_salary;\n";
|
|
// String sql = "CREATE OR REPLACE FUNCTION string_length (\n" +
|
|
// " input_string VARCHAR2\n" +
|
|
// ") RETURN NUMBER IS\n" +
|
|
// "BEGIN\n" +
|
|
// " RETURN LENGTH(input_string);\n" +
|
|
// "END;\n";
|
|
// String sql = "CREATE OR REPLACE TRIGGER log_insert\n" +
|
|
// " BEFORE INSERT ON employees\n" +
|
|
// " FOR EACH ROW\n" +
|
|
// " BEGIN\n" +
|
|
// " INSERT INTO audit_log (action, employee_id) VALUES ('INSERT', :NEW.id);\n" +
|
|
// " END;";
|
|
// String sql = "DECLARE\n" +
|
|
// " v_name Varchar2(20);\n" +
|
|
// " v_salary employees.salary%TYPE;\n" +
|
|
// " BEGIN\n" +
|
|
// " SELECT name, salary INTO v_name, v_salary FROM employees WHERE employee_id = 100;\n" +
|
|
// " DBMS_OUTPUT.PUT_LINE('Name: ' || v_name || ', Salary: ' || v_salary);\n" +
|
|
// " END;";
|
|
OracleLexer lexer = new OracleLexer(sql);
|
|
lexer.printTokens();
|
|
OracleParser parser = new OracleParser(lexer);
|
|
ASTNode root = parser.parse();
|
|
// ASTNode root = OracleParser.parseException(lexer.getTokens());
|
|
// ASTNode root = OracleParser.parseLoop(lexer.getTokens());
|
|
// ASTNode root = OracleParser.parseIFELSE(lexer.getTokens());
|
|
// ASTNode root = OracleParser.parseCaseWhen(lexer.getTokens());
|
|
// ASTNode root = OracleParser.parseJoin(lexer.getTokens());
|
|
System.out.println(root.toQueryString());
|
|
System.out.println(root.getASTString());
|
|
OpenGaussGenerator generator = new OpenGaussGenerator(root);
|
|
System.out.println(generator.generate());
|
|
}
|
|
}
|