Examples with Converter org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters.Converter used on opensource projects

Example 41 with Converter

use of org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters.Converter in project drill by apache.

the class HiveFieldConverter method create.

public static HiveFieldConverter create(TypeInfo typeInfo, FragmentContext fragmentContext) throws IllegalAccessException, InstantiationException {
    switch(typeInfo.getCategory()) {
        case PRIMITIVE:
            final PrimitiveCategory pCat = ((PrimitiveTypeInfo) typeInfo).getPrimitiveCategory();
            if (pCat != PrimitiveCategory.DECIMAL) {
                Class<? extends HiveFieldConverter> clazz = primMap.get(pCat);
                if (clazz != null) {
                    return clazz.newInstance();
                }
            } else {
                // For decimal, based on precision return appropriate converter.
                DecimalTypeInfo decimalTypeInfo = (DecimalTypeInfo) typeInfo;
                int precision = decimalTypeInfo.precision();
                int scale = decimalTypeInfo.scale();
                if (precision <= 9) {
                    return new Decimal9(precision, scale);
                } else if (precision <= 18) {
                    return new Decimal18(precision, scale);
                } else if (precision <= 28) {
                    return new Decimal28(precision, scale, fragmentContext);
                } else {
                    return new Decimal38(precision, scale, fragmentContext);
                }
            }
            throwUnsupportedHiveDataTypeError(pCat.toString());
            break;
        case LIST:
        case MAP:
        case STRUCT:
        case UNION:
        default:
            throwUnsupportedHiveDataTypeError(typeInfo.getCategory().toString());
    }
    return null;
}