org.apache.hadoop.hive.serde2.lazy

Class LazyStruct

java.lang.Object

org.apache.hadoop.hive.serde2.lazy.LazyObjectBase

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

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

org.apache.hadoop.hive.serde2.lazy.LazyStruct

All Implemented Interfaces:

SerDeStatsStruct

public class LazyStruct
extends LazyNonPrimitive<LazySimpleStructObjectInspector>
implements SerDeStatsStruct

LazyObject for storing a struct. The field of a struct can be primitive or non-primitive. LazyStruct does not deal with the case of a NULL struct. That is handled by the parent LazyObject.

Field Summary

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

bytes, length, start

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

oi

Constructor Summary

Constructors

Constructor and Description
LazyStruct(LazySimpleStructObjectInspector oi) Construct a LazyStruct object with the ObjectInspector.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	getField(int fieldID) Get one field out of the struct.
protected boolean[]	getFieldInited()
protected LazyObject[]	getFields()
java.util.ArrayList<java.lang.Object>	getFieldsAsList() Get the values of the fields as an ArrayList.
java.lang.Object	getObject() If the LazyObjectBase is a primitive Object, then deserialize it and return the actual primitive Object.
protected boolean	getParsed()
long	getRawDataSerializedSize() Rerurns the serialized size of the object.
void	init(ByteArrayRef bytes, int start, int length) Set the row data for this LazyStruct.
protected void	setFieldInited(boolean[] fieldInited)
protected void	setFields(LazyObject[] fields)
protected void	setParsed(boolean parsed)

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

hashCode

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

getInspector, setInspector

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyStruct

public LazyStruct(LazySimpleStructObjectInspector oi)

Construct a LazyStruct object with the ObjectInspector.

Method Detail

init

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

Set the row data for this LazyStruct.

Overrides:

init in class LazyNonPrimitive<LazySimpleStructObjectInspector>

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:

LazyObjectBase.init(ByteArrayRef, int, int)

getField

public java.lang.Object getField(int fieldID)

Get one field out of the struct. If the field is a primitive field, return the actual object. Otherwise return the LazyObject. This is because PrimitiveObjectInspector does not have control over the object used by the user - the user simply directly use the Object instead of going through Object PrimitiveObjectInspector.get(Object).

Parameters:

fieldID - The field ID

Returns:

The field as a LazyObject

getFieldsAsList

public java.util.ArrayList<java.lang.Object> getFieldsAsList()

Get the values of the fields as an ArrayList.

Returns:

The values of the fields as an ArrayList.

getObject

public java.lang.Object getObject()

Description copied from class: LazyObjectBase

If the LazyObjectBase is a primitive Object, then deserialize it and return the actual primitive Object. Otherwise (array, map, struct), return this.

Overrides:

getObject in class LazyNonPrimitive<LazySimpleStructObjectInspector>

getParsed

protected boolean getParsed()

setParsed

protected void setParsed(boolean parsed)

getFields

protected LazyObject[] getFields()

setFields

protected void setFields(LazyObject[] fields)

getFieldInited

protected boolean[] getFieldInited()

setFieldInited

protected void setFieldInited(boolean[] fieldInited)

getRawDataSerializedSize

public long getRawDataSerializedSize()

Description copied from interface: SerDeStatsStruct

Rerurns the serialized size of the object.

Specified by:

getRawDataSerializedSize in interface SerDeStatsStruct