Examples with LazyUnionObjectInspector org.apache.hadoop.hive.serde2.lazy.objectinspector.LazyUnionObjectInspector used on opensource projects

Example 1 with LazyUnionObjectInspector

use of org.apache.hadoop.hive.serde2.lazy.objectinspector.LazyUnionObjectInspector in project hive by apache.

the class AvroLazyObjectInspector method toLazyUnionObject.

/**
   * Convert the given object to a lazy object using the given {@link ObjectInspector}
   *
   * @param obj Object to be converted to a {@link LazyObject}
   * @param oi ObjectInspector used for the conversion
   * @return the created {@link LazyObject lazy object}
   * */
private Object toLazyUnionObject(Object obj, ObjectInspector objectInspector) {
    if (obj == null) {
        return null;
    }
    if (!(objectInspector instanceof LazyUnionObjectInspector)) {
        throw new IllegalArgumentException("Invalid objectinspector found. Expected LazyUnionObjectInspector, Found " + objectInspector.getClass());
    }
    StandardUnion standardUnion = (StandardUnion) obj;
    LazyUnionObjectInspector lazyUnionOI = (LazyUnionObjectInspector) objectInspector;
    // Grab the tag and the field
    byte tag = standardUnion.getTag();
    Object field = standardUnion.getObject();
    ObjectInspector fieldOI = lazyUnionOI.getObjectInspectors().get(tag);
    // convert to lazy object
    Object convertedObj = null;
    if (field != null) {
        convertedObj = toLazyObject(field, fieldOI);
    }
    if (convertedObj == null) {
        return null;
    }
    return new LazyUnion(lazyUnionOI, tag, convertedObj);
}