galileo.comm

Class QueryPreamble

java.lang.Object

galileo.comm.QueryPreamble

All Implemented Interfaces:

galileo.event.Event, galileo.serialization.ByteSerializable

public class QueryPreamble
extends java.lang.Object
implements galileo.event.Event

Represents a "Query Preamble" -- a set of information sent back to a client before the query results start being transmitted.

Author:

malensek

Nested Class Summary

Nested classes/interfaces inherited from interface galileo.serialization.ByteSerializable

galileo.serialization.ByteSerializable.Deserialize

Constructor Summary

Constructors

Constructor and Description
QueryPreamble(galileo.serialization.SerializationInputStream in)
QueryPreamble(java.lang.String id, java.lang.String query, java.util.List<NodeInfo> nodesInvolved)

Method Summary

Modifier and Type	Method and Description
java.util.List<NodeInfo>	getNodesInvolved() Retrieves the list of StorageNodes involved in servicing a QueryRequest.
java.lang.String	getQueryId()
java.lang.String	getQueryString()
void	serialize(galileo.serialization.SerializationOutputStream out)

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryPreamble

public QueryPreamble(java.lang.String id,
                     java.lang.String query,
                     java.util.List<NodeInfo> nodesInvolved)

QueryPreamble

@ByteSerializable.Deserialize
public QueryPreamble(galileo.serialization.SerializationInputStream in)
                                            throws java.io.IOException,
                                                   galileo.serialization.SerializationException

Throws:

java.io.IOException

galileo.serialization.SerializationException

Method Detail

getQueryString

public java.lang.String getQueryString()

getQueryId

public java.lang.String getQueryId()

getNodesInvolved

public java.util.List<NodeInfo> getNodesInvolved()

Retrieves the list of StorageNodes involved in servicing a QueryRequest. Each node in the list should reply with resulting metadata.

serialize

public void serialize(galileo.serialization.SerializationOutputStream out)
               throws java.io.IOException

Specified by:

serialize in interface galileo.serialization.ByteSerializable

Throws:

java.io.IOException