Method findType

src/org/apache/pig/data/DataType.java:99–138

Determine the datatype of an object. @param o Object to test. @return byte code of the type, or ERROR if we don't know.

(Object o)

     * @return byte code of the type, or ERROR if we don't know.
     */
    public static byte findType(Object o) {
        if (o == null) {
            return NULL;
        }

        // Try to put the most common first
        if (o instanceof DataByteArray) {
            return BYTEARRAY;
        } else if (o instanceof String) {
            return CHARARRAY;
        } else if (o instanceof Tuple) {
            return TUPLE;
        } else if (o instanceof DataBag) {
            return BAG;
        } else if (o instanceof Integer) {
            return INTEGER;
        } else if (o instanceof Long) {
            return LONG;
        } else if (o instanceof InternalMap) {
            return INTERNALMAP;
        } else if (o instanceof Map) {
            return MAP;
        } else if (o instanceof Float) {
            return FLOAT;
        } else if (o instanceof Double) {
            return DOUBLE;
        } else if (o instanceof Boolean) {
            return BOOLEAN;
        } else if (o instanceof DateTime) {
            return DATETIME;
        } else if (o instanceof Byte) {
            return BYTE;
        } else if (o instanceof BigInteger) {
            return BIGINTEGER;
        } else if (o instanceof BigDecimal) {
            return BIGDECIMAL;
        } else if (o instanceof WritableComparable) {
            return GENERIC_WRITABLECOMPARABLE;
        } else {return ERROR;}
    }

    /**
     * Given a Type object determine the data type it represents.  This isn't