com.ibm.tspaces.query
Class Range

java.lang.Object
  |
  +--com.ibm.tspaces.query.Range

public class Range

extends java.lang.Object

implements java.io.Serializable

Used to specify the upper and lower bounds for a range query. In the first version, ranges will be non-inclusive. A null lower bound will specify a less-than query, likewise a null upper bound will specify greater-than.

It will often be used as an operand of an IndexQuery.

Example usage:

     String value1 = "any old data";
     Integer key1 = new Interger(8);
     ts.write(new Field("index1",key1),new Field(value1);
   ...
     Range range = new Range(null,new Integer(9));
     Field f1 = new Field(new IndexQuery("index1",range));
     Tuple template = new Tuple(f1);
     ts.take(template);
 

Author:

John Thomas

See Also:

IndexQuery, Serialized Form

Constructor Summary

Range(java.lang.Object lowerBound_, java.lang.Object upperBound_)
Create a new Range

Method Summary

java.lang.Object	getLower() access the lower bound of the range
java.lang.Object	getUpper() access the Upper bound of the range
java.lang.String	toString() Display the Query

Methods inherited from class java.lang.Object

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

Constructor Detail

Range

public Range(java.lang.Object lowerBound_,
             java.lang.Object upperBound_)

Create a new Range

Parameters:

lowerBound_ - The lower bound for the search (possibly null).

upperBound_ - The upper bound for the search (possibly null).

Method Detail

getLower

public java.lang.Object getLower()

access the lower bound of the range

getUpper

public java.lang.Object getUpper()

access the Upper bound of the range

toString

public java.lang.String toString()

Display the Query

Overrides:

toString in class java.lang.Object