private static void initTypeRules()

in exec/java-exec/src/main/java/org/apache/drill/exec/resolver/TypeCastRules.java [51:685]

• 571 lines of code
• 1 McCabe index (conditional complexity)

  private static void initTypeRules() {
    rules = new HashMap<>();

    Set<MinorType> rule;

    /** TINYINT cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.TINYINT, rule);

    /** SMALLINT cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.SMALLINT, rule);

    /** INT cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.INT, rule);

    /** BIGINT cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.BIGINT, rule);

    /** UINT4 cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.UINT4, rule);

    /** UINT8 cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.UINT8, rule);

    /** DECIMAL9 cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.VARDECIMAL);
    rules.put(MinorType.DECIMAL9, rule);

    /** DECIMAL18 cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.VARDECIMAL);
    rules.put(MinorType.DECIMAL18, rule);

    /** DECIMAL28Dense cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.VARDECIMAL);
    rules.put(MinorType.DECIMAL28DENSE, rule);

    /** DECIMAL28Sparse cast able from **/

    rule = new HashSet<>();
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.VARDECIMAL);
    rules.put(MinorType.DECIMAL28SPARSE, rule);

    /* VARDECIMAL cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.VARDECIMAL);
    rules.put(MinorType.VARDECIMAL, rule);

    /** DECIMAL38Dense cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rules.put(MinorType.DECIMAL38DENSE, rule);


    /** DECIMAL38Sparse cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.VARDECIMAL);
    rules.put(MinorType.DECIMAL38SPARSE, rule);

    /** MONEY cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.MONEY, rule);

    /** DATE cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.DATE, rule);

    /** TIME cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TIME);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.TIME, rule);

    /** TIMESTAMP cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VARBINARY);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIMESTAMPTZ);
    rules.put(MinorType.TIMESTAMP, rule);

    /** TIMESTAMPTZ cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIME);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.TIMESTAMPTZ, rule);

    /** Interval cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.INTERVAL);
    rule.add(MinorType.INTERVALDAY);
    rule.add(MinorType.INTERVALYEAR);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.INTERVAL, rule);

    /** INTERVAL YEAR cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.INTERVALYEAR);
    rule.add(MinorType.INTERVAL);
    rule.add(MinorType.INTERVALDAY);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.INTERVALYEAR, rule);

    /** INTERVAL DAY cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.INTERVALDAY);
    rule.add(MinorType.INTERVALYEAR);
    rule.add(MinorType.INTERVAL);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.INTERVALDAY, rule);

    /** FLOAT4 cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rules.put(MinorType.FLOAT4, rule);

    /** FLOAT8 cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rules.put(MinorType.FLOAT8, rule);

    /** BIT cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rules.put(MinorType.BIT, rule);

    /** FIXEDCHAR cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIME);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.INTERVAL);
    rule.add(MinorType.INTERVALYEAR);
    rule.add(MinorType.INTERVALDAY);
    rules.put(MinorType.FIXEDCHAR, rule);

    /** FIXED16CHAR cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIME);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.INTERVAL);
    rule.add(MinorType.INTERVALYEAR);
    rule.add(MinorType.INTERVALDAY);
    rules.put(MinorType.FIXED16CHAR, rule);

    /** FIXEDBINARY cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rule.add(MinorType.FIXEDBINARY);
    rules.put(MinorType.FIXEDBINARY, rule);

    /** VARCHAR cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIME);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.INTERVAL);
    rule.add(MinorType.INTERVALYEAR);
    rule.add(MinorType.INTERVALDAY);
    rules.put(MinorType.VARCHAR, rule);

    /** VAR16CHAR cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.FIXEDCHAR);
    rule.add(MinorType.FIXED16CHAR);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VAR16CHAR);
    rule.add(MinorType.VARBINARY);
    rule.add(MinorType.FIXEDBINARY);
    rule.add(MinorType.DATE);
    rule.add(MinorType.TIME);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.INTERVAL);
    rule.add(MinorType.INTERVALYEAR);
    rule.add(MinorType.INTERVALDAY);
    rules.put(MinorType.VAR16CHAR, rule);

    /** VARBINARY cast able from **/
    rule = new HashSet<>();
    rule.add(MinorType.TINYINT);
    rule.add(MinorType.SMALLINT);
    rule.add(MinorType.INT);
    rule.add(MinorType.BIGINT);
    rule.add(MinorType.UINT1);
    rule.add(MinorType.UINT2);
    rule.add(MinorType.UINT4);
    rule.add(MinorType.UINT8);
    rule.add(MinorType.DECIMAL9);
    rule.add(MinorType.DECIMAL18);
    rule.add(MinorType.DECIMAL28SPARSE);
    rule.add(MinorType.DECIMAL28DENSE);
    rule.add(MinorType.DECIMAL38SPARSE);
    rule.add(MinorType.DECIMAL38DENSE);
    rule.add(MinorType.VARDECIMAL);
    rule.add(MinorType.MONEY);
    rule.add(MinorType.TIMESTAMP);
    rule.add(MinorType.TIMESTAMPTZ);
    rule.add(MinorType.FLOAT4);
    rule.add(MinorType.FLOAT8);
    rule.add(MinorType.BIT);
    rule.add(MinorType.VARCHAR);
    rule.add(MinorType.VARBINARY);
    rule.add(MinorType.FIXEDBINARY);
    rules.put(MinorType.VARBINARY, rule);

    rules.put(MinorType.MAP, Sets.newHashSet(MinorType.MAP));
    rules.put(MinorType.LIST, Sets.newHashSet(MinorType.LIST));
    rules.put(MinorType.UNION, Sets.newHashSet(MinorType.UNION));
    rules.put(MinorType.DICT, Sets.newHashSet(MinorType.DICT));
  }