com.bigdata.sparse
Class EmptyRowPrecondition

java.lang.Object
  com.bigdata.sparse.EmptyRowPrecondition

All Implemented Interfaces:

IPrecondition, Serializable

public class EmptyRowPrecondition
extends Object
implements IPrecondition

IPrecondition succeeds iff there are no property values for the logical row (it recognizes a null, indicating no property values, and an empty logical row, indicating that an INameFilter was applied and that there were no property values which satisified that filter, and a deleted property value for the primary key, which is often used as a shorthand for deleting the logical row).

Version:

$Id: EmptyRowPrecondition.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

See Also:

Serialized Form

Field Summary

protected static org.apache.log4j.Logger

log

Constructor Summary

EmptyRowPrecondition()

Method Summary

boolean

accept(ITPS logicalRow)

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final transient org.apache.log4j.Logger log

Constructor Detail

EmptyRowPrecondition

public EmptyRowPrecondition()

Method Detail

accept

public boolean accept(ITPS logicalRow)

Specified by:

accept in interface IPrecondition