/** Initializes this catalog reader. */
  protected void init() {
    final RelDataType intType = typeFactory.createSqlType(SqlTypeName.INTEGER);
    final RelDataType varchar10Type = typeFactory.createSqlType(SqlTypeName.VARCHAR, 10);
    final RelDataType varchar20Type = typeFactory.createSqlType(SqlTypeName.VARCHAR, 20);
    final RelDataType timestampType = typeFactory.createSqlType(SqlTypeName.TIMESTAMP);
    final RelDataType booleanType = typeFactory.createSqlType(SqlTypeName.BOOLEAN);
    final RelDataType rectilinearCoordType =
        typeFactory.createStructType(new RelDataType[] {intType, intType}, new String[] {"X", "Y"});

    // TODO jvs 12-Feb-2005: register this canonical instance with type
    // factory
    addressType =
        new ObjectSqlType(
            SqlTypeName.STRUCTURED,
            new SqlIdentifier("ADDRESS", SqlParserPos.ZERO),
            false,
            Arrays.asList(
                new RelDataTypeFieldImpl("STREET", 0, varchar20Type),
                new RelDataTypeFieldImpl("CITY", 1, varchar20Type),
                new RelDataTypeFieldImpl("ZIP", 1, intType),
                new RelDataTypeFieldImpl("STATE", 1, varchar20Type)),
            RelDataTypeComparability.None);

    // Register "SALES" schema.
    MockSchema salesSchema = new MockSchema("SALES");
    registerSchema(salesSchema);

    // Register "EMP" table.
    MockTable empTable = new MockTable(this, salesSchema, "EMP");
    empTable.addColumn("EMPNO", intType);
    empTable.addColumn("ENAME", varchar20Type);
    empTable.addColumn("JOB", varchar10Type);
    empTable.addColumn("MGR", intType);
    empTable.addColumn("HIREDATE", timestampType);
    empTable.addColumn("SAL", intType);
    empTable.addColumn("COMM", intType);
    empTable.addColumn("DEPTNO", intType);
    empTable.addColumn("SLACKER", booleanType);
    registerTable(empTable);

    // Register "DEPT" table.
    MockTable deptTable = new MockTable(this, salesSchema, "DEPT");
    deptTable.addColumn("DEPTNO", intType);
    deptTable.addColumn("NAME", varchar10Type);
    registerTable(deptTable);

    // Register "BONUS" table.
    MockTable bonusTable = new MockTable(this, salesSchema, "BONUS");
    bonusTable.addColumn("ENAME", varchar20Type);
    bonusTable.addColumn("JOB", varchar10Type);
    bonusTable.addColumn("SAL", intType);
    bonusTable.addColumn("COMM", intType);
    registerTable(bonusTable);

    // Register "SALGRADE" table.
    MockTable salgradeTable = new MockTable(this, salesSchema, "SALGRADE");
    salgradeTable.addColumn("GRADE", intType);
    salgradeTable.addColumn("LOSAL", intType);
    salgradeTable.addColumn("HISAL", intType);
    registerTable(salgradeTable);

    // Register "EMP_ADDRESS" table
    MockTable contactAddressTable = new MockTable(this, salesSchema, "EMP_ADDRESS");
    contactAddressTable.addColumn("EMPNO", intType);
    contactAddressTable.addColumn("HOME_ADDRESS", addressType);
    contactAddressTable.addColumn("MAILING_ADDRESS", addressType);
    registerTable(contactAddressTable);

    // Register "CUSTOMER" schema.
    MockSchema customerSchema = new MockSchema("CUSTOMER");
    registerSchema(customerSchema);

    // Register "CONTACT" table.
    MockTable contactTable = new MockTable(this, customerSchema, "CONTACT");
    contactTable.addColumn("CONTACTNO", intType);
    contactTable.addColumn("FNAME", varchar10Type);
    contactTable.addColumn("LNAME", varchar10Type);
    contactTable.addColumn("EMAIL", varchar20Type);
    contactTable.addColumn("COORD", rectilinearCoordType);
    registerTable(contactTable);

    // Register "ACCOUNT" table.
    MockTable accountTable = new MockTable(this, customerSchema, "ACCOUNT");
    accountTable.addColumn("ACCTNO", intType);
    accountTable.addColumn("TYPE", varchar20Type);
    accountTable.addColumn("BALANCE", intType);
    registerTable(accountTable);
  }
 protected void registerTable(MockTable table) {
   table.onRegister(typeFactory);
   tables.put(table.getQualifiedName(), table);
 }