com.ibm.tspaces.query
Class MatchQuery

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

public class MatchQuery

extends java.lang.Object

implements Query

Class MatchQuery This class extends the generic Query interface. An MatchQuery object is specified at the client and passed to the server in a template tuple. At the server, it is transformed to a TSMatchQuery object that is actually used for the query operation.

This is really just an alternative way to expressing a regular template match. Example usage:

     String value1 = "any old data";
     String key1 = "mykey";
     ts.write(key1,value1);
   ...
          
     Tuple template = new Tuple(key1,new Field(String.class));
     ts.take(template);   // normal way
        or
     ts.take(new MatchQuery(template));
 

The MatchQuery is required when using AndQuery or OrQuery

     MachQuery mq = new MatchQuery(template);
     IndexQuery iq = new IndexQuery("index1","key");
     ts.take(new AndQuery(iq,mq));
 

Author:

John Thomas

See Also:

SuperTuple, Query, Serialized Form

Constructor Summary

MatchQuery(SuperTuple tuple_)
Create a new MatchQuery

Method Summary

SuperTuple

getTuple() access the Tuple that defines this Match Query

Methods inherited from class java.lang.Object

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

Constructor Detail

MatchQuery

public MatchQuery(SuperTuple tuple_)

Create a new MatchQuery

Parameters:

tuple_ - The SuperTuple to match

q2_ - The second query

Method Detail

getTuple

public SuperTuple getTuple()

access the Tuple that defines this Match Query