org.apache.hadoop.contrib.index.mapred

类 DocumentAndOp

java.lang.Object

org.apache.hadoop.contrib.index.mapred.DocumentAndOp

所有已实现的接口:

Writable

public class DocumentAndOp
extends Object
implements Writable

This class represents an indexing operation. The operation can be an insert, a delete or an update. If the operation is an insert or an update, a (new) document must be specified. If the operation is a delete or an update, a delete term must be specified.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	DocumentAndOp.Op This class represents the type of an operation - an insert, a delete or an update.

构造器概要

构造器

构造器和说明
DocumentAndOp() Constructor for no operation.
DocumentAndOp(DocumentAndOp.Op op, Document doc) Constructor for an insert operation.
DocumentAndOp(DocumentAndOp.Op op, Document doc, Term term) Constructor for an insert, a delete or an update operation.
DocumentAndOp(DocumentAndOp.Op op, Term term) Constructor for a delete operation.

方法概要

方法

限定符和类型	方法和说明
Document	getDocument() Get the document.
DocumentAndOp.Op	getOp() Get the type of operation.
Term	getTerm() Get the term.
void	readFields(DataInput in) Deserialize the fields of this object from in.
void	setDelete(Term term) Set the instance to be a delete operation.
void	setInsert(Document doc) Set the instance to be an insert operation.
void	setUpdate(Document doc, Term term) Set the instance to be an update operation.
String	toString()
void	write(DataOutput out) Serialize the fields of this object to out.

从类继承的方法 java.lang.Object

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

构造器详细资料

DocumentAndOp

public DocumentAndOp()

Constructor for no operation.

DocumentAndOp

public DocumentAndOp(DocumentAndOp.Op op,
             Document doc)

Constructor for an insert operation.

参数:

op -

doc -

DocumentAndOp

public DocumentAndOp(DocumentAndOp.Op op,
             Term term)

Constructor for a delete operation.

参数:

op -

term -

DocumentAndOp

public DocumentAndOp(DocumentAndOp.Op op,
             Document doc,
             Term term)

Constructor for an insert, a delete or an update operation.

参数:

op -

doc -

term -

方法详细资料

setInsert

public void setInsert(Document doc)

Set the instance to be an insert operation.

参数:

doc -

setDelete

public void setDelete(Term term)

Set the instance to be a delete operation.

参数:

term -

setUpdate

public void setUpdate(Document doc,
             Term term)

Set the instance to be an update operation.

参数:

doc -

term -

getOp

public DocumentAndOp.Op getOp()

Get the type of operation.

返回:

the type of the operation.

getDocument

public Document getDocument()

Get the document.

返回:

the document

getTerm

public Term getTerm()

Get the term.

返回:

the term

toString

public String toString()

覆盖:

toString 在类中 Object

write

public void write(DataOutput out)
           throws IOException

从接口复制的说明: Writable

Serialize the fields of this object to out.

指定者:

write 在接口中 Writable

参数:

out - DataOuput to serialize this object into.

抛出:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

从接口复制的说明: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

指定者:

readFields 在接口中 Writable

参数:

in - DataInput to deseriablize this object from.

抛出:

IOException