Examples with DateConverter org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorConverter.DateConverter used on opensource projects

Example 1 with DateConverter

use of org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorConverter.DateConverter in project hive by apache.

the class GenericUDFToDate method initialize.

@Override
public ObjectInspector initialize(ObjectInspector[] arguments) throws UDFArgumentException {
    if (arguments.length < 1) {
        throw new UDFArgumentLengthException("The function CAST as DATE requires at least one argument, got " + arguments.length);
    }
    try {
        argumentOI = (PrimitiveObjectInspector) arguments[0];
        PrimitiveCategory pc = argumentOI.getPrimitiveCategory();
        PrimitiveGrouping pg = PrimitiveObjectInspectorUtils.getPrimitiveGrouping(pc);
        switch(pg) {
            case DATE_GROUP:
            case STRING_GROUP:
            case VOID_GROUP:
                break;
            default:
                throw new UDFArgumentException("CAST as DATE only allows date,string, or timestamp types");
        }
    } catch (ClassCastException e) {
        throw new UDFArgumentException("The function CAST as DATE takes only primitive types");
    }
    dc = new DateConverter(argumentOI, PrimitiveObjectInspectorFactory.writableDateObjectInspector);
    return PrimitiveObjectInspectorFactory.writableDateObjectInspector;
}

Example 2 with DateConverter

use of org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorConverter.DateConverter in project hive by apache.

the class GenericUDFDateAdd method initialize.

@Override
public ObjectInspector initialize(ObjectInspector[] arguments) throws UDFArgumentException {
    if (arguments.length != 2) {
        throw new UDFArgumentLengthException("date_add() requires 2 argument, got " + arguments.length);
    }
    if (arguments[0].getCategory() != ObjectInspector.Category.PRIMITIVE) {
        throw new UDFArgumentTypeException(0, "Only primitive type arguments are accepted but " + arguments[0].getTypeName() + " is passed. as first arguments");
    }
    if (arguments[1].getCategory() != ObjectInspector.Category.PRIMITIVE) {
        throw new UDFArgumentTypeException(1, "Only primitive type arguments are accepted but " + arguments[1].getTypeName() + " is passed. as second arguments");
    }
    inputType1 = ((PrimitiveObjectInspector) arguments[0]).getPrimitiveCategory();
    ObjectInspector outputOI = PrimitiveObjectInspectorFactory.writableDateObjectInspector;
    switch(inputType1) {
        case STRING:
        case VARCHAR:
        case CHAR:
            inputType1 = PrimitiveCategory.STRING;
            dateConverter = ObjectInspectorConverters.getConverter((PrimitiveObjectInspector) arguments[0], PrimitiveObjectInspectorFactory.writableStringObjectInspector);
            break;
        case TIMESTAMP:
            dateConverter = new TimestampConverter((PrimitiveObjectInspector) arguments[0], PrimitiveObjectInspectorFactory.writableTimestampObjectInspector);
            break;
        case DATE:
            dateConverter = ObjectInspectorConverters.getConverter((PrimitiveObjectInspector) arguments[0], PrimitiveObjectInspectorFactory.writableDateObjectInspector);
            break;
        default:
            throw new UDFArgumentException(" DATE_ADD() only takes STRING/TIMESTAMP/DATEWRITABLE types as first argument, got " + inputType1);
    }
    inputType2 = ((PrimitiveObjectInspector) arguments[1]).getPrimitiveCategory();
    switch(inputType2) {
        case BYTE:
            daysConverter = ObjectInspectorConverters.getConverter((PrimitiveObjectInspector) arguments[1], PrimitiveObjectInspectorFactory.writableByteObjectInspector);
            break;
        case SHORT:
            daysConverter = ObjectInspectorConverters.getConverter((PrimitiveObjectInspector) arguments[1], PrimitiveObjectInspectorFactory.writableShortObjectInspector);
            break;
        case INT:
            daysConverter = ObjectInspectorConverters.getConverter((PrimitiveObjectInspector) arguments[1], PrimitiveObjectInspectorFactory.writableIntObjectInspector);
            break;
        default:
            throw new UDFArgumentException(" DATE_ADD() only takes TINYINT/SMALLINT/INT types as second argument, got " + inputType2);
    }
    return outputOI;
}