org.apache.nutch.db
Class DistributedWebDBWriter.LinkInstruction

java.lang.Object
  org.apache.nutch.db.DistributedWebDBWriter.LinkInstruction

All Implemented Interfaces:

Comparable, Writable, WritableComparable

Enclosing class:

DistributedWebDBWriter

public static class DistributedWebDBWriter.LinkInstruction

extends Object

implements WritableComparable

Holds an instruction over a Link.

Nested Class Summary

static class	DistributedWebDBWriter.LinkInstruction.MD5Comparator Sorts the instruction first by Md5, then by opcode.
static class	DistributedWebDBWriter.LinkInstruction.UrlComparator Sorts the instruction first by url, then by opcode.

Constructor Summary

DistributedWebDBWriter.LinkInstruction()

DistributedWebDBWriter.LinkInstruction(Link link, int instruction)

Method Summary

int	compareTo(Object o)
int	getInstruction()
Link	getLink()
void	readFields(DataInput in) Reads the fields of this object from in.
void	set(DistributedWebDBWriter.LinkInstruction that) Re-init from another LinkInstruction's info.
void	set(Link link, int instruction) Re-init with a Link and an instruction
void	write(DataOutput out) Writes the fields of this object to out.

Methods inherited from class java.lang.Object

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

Constructor Detail

DistributedWebDBWriter.LinkInstruction

public DistributedWebDBWriter.LinkInstruction()

DistributedWebDBWriter.LinkInstruction

public DistributedWebDBWriter.LinkInstruction(Link link,
                                              int instruction)

Method Detail

set

public void set(DistributedWebDBWriter.LinkInstruction that)

Re-init from another LinkInstruction's info.

set

public void set(Link link,
                int instruction)

Re-init with a Link and an instruction

compareTo

public int compareTo(Object o)

Specified by:

compareTo in interface Comparable

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

Writes the fields of this object to out.

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

Reads the fields of this object from in. For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Specified by:

readFields in interface Writable

Throws:

IOException

getLink

public Link getLink()

getInstruction

public int getInstruction()