static

in paimon-common/src/main/java/org/apache/paimon/types/DataTypeCasts.java [62:178]

• 96 lines of code
• 2 McCabe index (conditional complexity)

    static {
        implicitCastingRules = new HashMap<>();
        explicitCastingRules = new HashMap<>();
        compatibleCastingRules = new HashMap<>();

        // identity casts

        for (DataTypeRoot typeRoot : allTypes()) {
            castTo(typeRoot).implicitFrom(typeRoot).build();
        }

        // cast specification

        castTo(CHAR)
                .implicitFrom(CHAR)
                .explicitFromFamily(PREDEFINED, CONSTRUCTED)
                .compatibleFrom(CHAR, VARCHAR)
                .build();

        castTo(VARCHAR)
                .implicitFromFamily(CHARACTER_STRING)
                .explicitFromFamily(PREDEFINED, CONSTRUCTED)
                .compatibleFrom(CHAR, VARCHAR)
                .build();

        castTo(BOOLEAN)
                .implicitFrom(BOOLEAN)
                .explicitFromFamily(CHARACTER_STRING, INTEGER_NUMERIC)
                .compatibleFrom(BOOLEAN)
                .build();

        castTo(BINARY)
                .implicitFrom(BINARY)
                .explicitFromFamily(CHARACTER_STRING)
                .explicitFrom(VARBINARY)
                .compatibleFrom(BINARY, VARBINARY)
                .build();

        castTo(VARBINARY)
                .implicitFromFamily(BINARY_STRING)
                .explicitFromFamily(CHARACTER_STRING)
                .explicitFrom(BINARY)
                .compatibleFrom(BINARY, VARBINARY)
                .build();

        castTo(DECIMAL)
                .implicitFromFamily(NUMERIC)
                .explicitFromFamily(CHARACTER_STRING)
                .explicitFrom(BOOLEAN, TIMESTAMP_WITHOUT_TIME_ZONE, TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .build();

        castTo(TINYINT)
                .implicitFrom(TINYINT)
                .explicitFromFamily(NUMERIC, CHARACTER_STRING)
                .explicitFrom(BOOLEAN, TIMESTAMP_WITHOUT_TIME_ZONE, TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .compatibleFrom(TINYINT)
                .build();

        castTo(SMALLINT)
                .implicitFrom(TINYINT, SMALLINT)
                .explicitFromFamily(NUMERIC, CHARACTER_STRING)
                .explicitFrom(BOOLEAN, TIMESTAMP_WITHOUT_TIME_ZONE, TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .compatibleFrom(SMALLINT)
                .build();

        castTo(INTEGER)
                .implicitFrom(TINYINT, SMALLINT, INTEGER)
                .explicitFromFamily(NUMERIC, CHARACTER_STRING)
                .explicitFrom(BOOLEAN, TIMESTAMP_WITHOUT_TIME_ZONE, TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .compatibleFrom(INTEGER, DATE, TIME_WITHOUT_TIME_ZONE)
                .build();

        castTo(BIGINT)
                .implicitFrom(TINYINT, SMALLINT, INTEGER, BIGINT)
                .explicitFromFamily(NUMERIC, CHARACTER_STRING)
                .explicitFrom(BOOLEAN, TIMESTAMP_WITHOUT_TIME_ZONE, TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .compatibleFrom(BIGINT)
                .build();

        castTo(FLOAT)
                .implicitFrom(TINYINT, SMALLINT, INTEGER, BIGINT, FLOAT, DECIMAL)
                .explicitFromFamily(NUMERIC, CHARACTER_STRING)
                .explicitFrom(BOOLEAN, TIMESTAMP_WITHOUT_TIME_ZONE, TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .compatibleFrom(FLOAT)
                .build();

        castTo(DOUBLE)
                .implicitFromFamily(NUMERIC)
                .explicitFromFamily(CHARACTER_STRING)
                .explicitFrom(BOOLEAN, TIMESTAMP_WITHOUT_TIME_ZONE, TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .compatibleFrom(DOUBLE)
                .build();

        castTo(DATE)
                .implicitFrom(DATE, TIMESTAMP_WITHOUT_TIME_ZONE)
                .explicitFromFamily(TIMESTAMP, CHARACTER_STRING)
                .compatibleFrom(INTEGER, DATE, TIME_WITHOUT_TIME_ZONE)
                .build();

        castTo(TIME_WITHOUT_TIME_ZONE)
                .implicitFrom(TIME_WITHOUT_TIME_ZONE, TIMESTAMP_WITHOUT_TIME_ZONE)
                .explicitFromFamily(TIME, TIMESTAMP, CHARACTER_STRING)
                .compatibleFrom(INTEGER, DATE, TIME_WITHOUT_TIME_ZONE)
                .build();

        castTo(TIMESTAMP_WITHOUT_TIME_ZONE)
                .implicitFrom(TIMESTAMP_WITHOUT_TIME_ZONE, TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .explicitFromFamily(DATETIME, CHARACTER_STRING, NUMERIC)
                .compatibleFrom(TIMESTAMP_WITHOUT_TIME_ZONE)
                .build();

        castTo(TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .implicitFrom(TIMESTAMP_WITH_LOCAL_TIME_ZONE, TIMESTAMP_WITHOUT_TIME_ZONE)
                .explicitFromFamily(DATETIME, CHARACTER_STRING, NUMERIC)
                .compatibleFrom(TIMESTAMP_WITH_LOCAL_TIME_ZONE)
                .build();
    }