dd.api
Class DDThresholdTag

java.lang.Object
  |
  +--dd.api.DDThresholdTag

All Implemented Interfaces:

DDTag, QuickSerializable

Direct Known Subclasses:

RepairDirectoryTest.Tag, TriggerTester.Tag

public abstract class DDThresholdTag

extends Object

implements DDTag

DDThresholdTag is an extension of DDTag that defines a low_watermark (i.e. threshold) for the number of ptrs that triggers the root directory node to generate a DDRepairObjReq.

Version:

$Id: DDThresholdTag.java,v 1.2 2004/04/06 07:12:08 hweather Exp $

Author:

Hakim Weatherspoon

See Also:

DDTag, DDRepairObjReq

Field Summary

short

low_watermark low_watermark is the threshold for the number of ptrs that triggers the root directory node to generate a DDRepairObjReq.

Constructor Summary

DDThresholdTag(InputBuffer buffer)
Constructs a DDThresholdTag from its serialized form.

DDThresholdTag(short low_watermark)
Constructor: Creates a new DDThresholdTag with given low_watermark.

Method Summary

boolean	equals(Object other) Compares this DDThresholdTag with another tag, and returns true iff they are the same type of tag.
int	hashCode() Calculates a Java hash code for this DDThresholdTag object (by returning its type_code).
void	serialize(OutputBuffer buffer) Specified by ostore.util.QuickSerializable
String	toString() Specified by java.lang.Object

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

low_watermark

public short low_watermark

low_watermark is the threshold for the number of ptrs that triggers the root directory node to generate a DDRepairObjReq.

Constructor Detail

DDThresholdTag

public DDThresholdTag(short low_watermark)

Constructor: Creates a new DDThresholdTag with given low_watermark.

Parameters:

low_watermark - Threshold for the number of ptrs that triggers the root directory node to generate a DDRepairObjReq.

DDThresholdTag

public DDThresholdTag(InputBuffer buffer)
               throws QSException

Constructs a DDThresholdTag from its serialized form.

Parameters:

buffer - serialized form of object.

Method Detail

serialize

public void serialize(OutputBuffer buffer)

Specified by ostore.util.QuickSerializable

Specified by:

serialize in interface QuickSerializable

equals

public boolean equals(Object other)

Compares this DDThresholdTag with another tag, and returns true iff they are the same type of tag.

Overrides:

equals in class Object

Parameters:

other - the object with which to compare this DDThresholdTag.

Returns:

true iff this and other are instanceof DDThresholdTag.

hashCode

public int hashCode()

Calculates a Java hash code for this DDThresholdTag object (by returning its type_code).

Overrides:

hashCode in class Object

Returns:

the Java hash code for this DDThresholdTag.

toString

public String toString()

Specified by java.lang.Object

Overrides:

toString in class Object