org.apache.hadoop.record

类 Record

java.lang.Object

org.apache.hadoop.record.Record

所有已实现的接口:

Cloneable, Comparable, Writable, WritableComparable

直接已知子类:

RecordTypeInfo

public abstract class Record
extends Object
implements WritableComparable, Cloneable

Abstract class that is extended by generated classes.

构造器概要

构造器

构造器和说明
Record()

方法概要

方法

限定符和类型	方法和说明
abstract int	compareTo(Object peer)
void	deserialize(RecordInput rin) Deserialize a record without a tag
abstract void	deserialize(RecordInput rin, String tag) Deserialize a record with a tag (usually field name)
void	readFields(DataInput din) Deserialize the fields of this object from in.
void	serialize(RecordOutput rout) Serialize a record without a tag
abstract void	serialize(RecordOutput rout, String tag) Serialize a record with tag (ususally field name)
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

Record

public Record()

方法详细资料

serialize

public abstract void serialize(RecordOutput rout,
             String tag)
                        throws IOException

Serialize a record with tag (ususally field name)

参数:

rout - Record output destination

tag - record tag (Used only in tagged serialization e.g. XML)

抛出:

IOException

deserialize

public abstract void deserialize(RecordInput rin,
               String tag)
                          throws IOException

Deserialize a record with a tag (usually field name)

参数:

rin - Record input source

tag - Record tag (Used only in tagged serialization e.g. XML)

抛出:

IOException

compareTo

public abstract int compareTo(Object peer)
                       throws ClassCastException

指定者:

compareTo 在接口中 Comparable

抛出:

ClassCastException

serialize

public void serialize(RecordOutput rout)
               throws IOException

Serialize a record without a tag

参数:

rout - Record output destination

抛出:

IOException

deserialize

public void deserialize(RecordInput rin)
                 throws IOException

Deserialize a record without a tag

参数:

rin - Record input source

抛出:

IOException

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 din)
                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:

din - DataInput to deseriablize this object from.

抛出:

IOException

toString

public String toString()

覆盖:

toString 在类中 Object