org.apache.hadoop.hive.serde2.lazy

Class LazyNonPrimitive<OI extends ObjectInspector>

java.lang.Object

org.apache.hadoop.hive.serde2.lazy.LazyObject<OI>

org.apache.hadoop.hive.serde2.lazy.LazyNonPrimitive<OI>

All Implemented Interfaces:

LazyObjectBase

Direct Known Subclasses:

LazyArray, LazyMap, LazyStruct, LazyUnion

public abstract class LazyNonPrimitive<OI extends ObjectInspector>
extends LazyObject<OI>

LazyPrimitive stores a primitive Object in a LazyObject.

Field Summary

Fields

Modifier and Type	Field and Description
protected ByteArrayRef	bytes
protected int	length
protected int	start

Fields inherited from class org.apache.hadoop.hive.serde2.lazy.LazyObject

isNull, oi

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LazyNonPrimitive(OI oi) Create a LazyNonPrimitive object with the specified ObjectInspector.

Method Summary

Methods

Modifier and Type	Method and Description
int	hashCode()
void	init(ByteArrayRef bytes, int start, int length) Set the data for this LazyObjectBase.
protected boolean	isNull(org.apache.hadoop.io.Text nullSequence, byte[] bytes, int fieldByteBegin, int fieldLength)
protected boolean	isNull(org.apache.hadoop.io.Text nullSequence, ByteArrayRef ref, int fieldByteBegin, int fieldLength)

Methods inherited from class org.apache.hadoop.hive.serde2.lazy.LazyObject

getInspector, getObject, setInspector, setNull

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

bytes

protected ByteArrayRef bytes

start

protected int start

length

protected int length

Constructor Detail

LazyNonPrimitive

protected LazyNonPrimitive(OI oi)

Create a LazyNonPrimitive object with the specified ObjectInspector.

Parameters:

oi - The ObjectInspector would have to have a hierarchy of LazyObjectInspectors with the leaf nodes being WritableObjectInspectors. It's used both for accessing the type hierarchy of the complex object, as well as getting meta information (separator, nullSequence, etc) when parsing the lazy object.

Method Detail

init

public void init(ByteArrayRef bytes,
        int start,
        int length)

Description copied from interface: LazyObjectBase

Set the data for this LazyObjectBase. We take ByteArrayRef instead of byte[] so that we will be able to drop the reference to byte[] by a single assignment. The ByteArrayRef object can be reused across multiple rows.

Specified by:

init in interface LazyObjectBase

Overrides:

init in class LazyObject<OI extends ObjectInspector>

Parameters:

bytes - The wrapper of the byte[].

start - The start position inside the bytes.

length - The length of the data, starting from "start"

See Also:

ByteArrayRef

isNull

protected final boolean isNull(org.apache.hadoop.io.Text nullSequence,
             ByteArrayRef ref,
             int fieldByteBegin,
             int fieldLength)

isNull

protected final boolean isNull(org.apache.hadoop.io.Text nullSequence,
             byte[] bytes,
             int fieldByteBegin,
             int fieldLength)

hashCode

public int hashCode()

Specified by:

hashCode in class LazyObject<OI extends ObjectInspector>