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/*
* @(#)BrokerDAO.java 1.17 06/29/07
*/
package com.sun.messaging.jmq.jmsserver.persist.jdbc;
import java.util.List;
import java.util.HashMap;
import java.sql.Connection;
import com.sun.messaging.jmq.util.UID;
import com.sun.messaging.jmq.jmsserver.util.BrokerException;
import com.sun.messaging.jmq.jmsserver.persist.api.HABrokerInfo;
import com.sun.messaging.jmq.jmsserver.persist.jdbc.comm.BaseDAO;
import com.sun.messaging.jmq.jmsserver.cluster.api.BrokerState;
/**
* This class is an interface for the Broker table which will be implemented
* by database specific code.
*/
public interface BrokerDAO extends BaseDAO {
/**
* Broker table:
* Holds all the broker info in a HA cluster.
*
* CREATE TABLE MQBKR[C|S] (
* ID VARCHAR(100) NOT NULL,
* URL VARCHAR(100) NOT NULL,
* VERSION INTEGER NOT NULL,
* STATE INTEGER NOT NULL,
* TAKEOVER_BROKER VARCHAR(100),
* HEARTBEAT_TS BIGINT,
* PRIMARY KEY(ID)
* );
*
* ID - Unique ID of the broker
* URL - The URL of the broker (i.e. includes hostname and port)
* VERSION - Current version of the borker
* STATE - State of the broker
* TAKEOVER_BROKER - Name of broker that has taken over the store
* HEARTBEAT_TS - Timestamp periodically updated by a running borker
*/
public static final String TABLE = "MQBKR";
public static final String TABLE_NAME_PREFIX = TABLE + DBConstants.SCHEMA_VERSION;
public static final String ID_COLUMN = "ID";
public static final String URL_COLUMN = "URL";
public static final String VERSION_COLUMN = "VERSION";
public static final String STATE_COLUMN = "STATE";
public static final String TAKEOVER_BROKER_COLUMN = "TAKEOVER_BROKER";
public static final String HEARTBEAT_TS_COLUMN = "HEARTBEAT_TS";
void insert( Connection conn, String id, String takeoverID, String url,
int version, int state, Long sessionID, long heartbeat, List additionalSessions )
throws BrokerException;
UID update( Connection conn, String id, int updateType, Object oldValue, Object newValue )
throws BrokerException;
Long updateHeartbeat( Connection conn, String id )
throws BrokerException;
Long updateHeartbeat( Connection conn, String id,
long lastHeartbeat ) throws BrokerException;
boolean updateState( Connection conn, String id, BrokerState newState,
BrokerState expectedState, boolean local) throws BrokerException;
void delete( Connection conn, String id ) throws BrokerException;
HABrokerInfo takeover( Connection conn, String brokerID,
String targetBrokerID, long lastHeartbeat, BrokerState expectedState,
long newHeartbeat, BrokerState newState) throws BrokerException;
long getHeartbeat( Connection conn, String id ) throws BrokerException;
HashMap getAllHeartbeats( Connection conn ) throws BrokerException;
BrokerState getState( Connection conn, String id ) throws BrokerException;
Object[] getAllStates( Connection conn ) throws BrokerException;
HABrokerInfo getBrokerInfo( Connection conn, String id ) throws BrokerException;
HashMap getAllBrokerInfos( Connection conn, boolean loadSession )
throws BrokerException;
HashMap getAllBrokerInfosByState( Connection conn, BrokerState state )
throws BrokerException;
boolean isBeingTakenOver( Connection conn, String id ) throws BrokerException;
}