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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2001-2003
* Sleepycat Software. All rights reserved.
*
* $Id: RpcDbc.java,v 1.9 2003/10/29 16:02:57 mjc Exp $
*/
package com.sleepycat.db.rpcserver;
import com.sleepycat.db.*;
import java.io.IOException;
import java.io.*;
import java.util.*;
/**
* RPC wrapper around a dbc object for the Java RPC server.
*/
public class RpcDbc extends Timer
{
static final byte[] empty = new byte[0];
RpcDbEnv rdbenv;
RpcDb rdb;
Dbc dbc;
Timer orig_timer;
boolean isJoin;
public RpcDbc(RpcDb rdb, Dbc dbc, boolean isJoin)
{
this.rdb = rdb;
this.rdbenv = rdb.rdbenv;
this.dbc = dbc;
this.isJoin = isJoin;
}
void dispose()
{
if (dbc != null) {
try {
dbc.close();
} catch(DbException e) {
e.printStackTrace(DbServer.err);
}
dbc = null;
}
}
public void close(DbDispatcher server,
__dbc_close_msg args, __dbc_close_reply reply)
{
try {
dbc.close();
dbc = null;
if (isJoin)
for(LocalIterator i = ((DbServer)server).cursor_list.iterator(); i.hasNext(); ) {
RpcDbc rdbc = (RpcDbc)i.next();
// Unjoin cursors that were joined to create this
if (rdbc != null && rdbc.timer == this)
rdbc.timer = rdbc.orig_timer;
}
reply.status = 0;
} catch(DbException e) {
e.printStackTrace(DbServer.err);
reply.status = e.getErrno();
} finally {
server.delCursor(this, false);
}
}
public void count(DbDispatcher server,
__dbc_count_msg args, __dbc_count_reply reply)
{
try {
reply.dupcount = dbc.count(args.flags);
reply.status = 0;
} catch(DbException e) {
e.printStackTrace(DbServer.err);
reply.status = e.getErrno();
}
}
public void del(DbDispatcher server,
__dbc_del_msg args, __dbc_del_reply reply)
{
try {
reply.status = dbc.delete(args.flags);
} catch(DbException e) {
e.printStackTrace(DbServer.err);
reply.status = e.getErrno();
}
}
public void dup(DbDispatcher server,
__dbc_dup_msg args, __dbc_dup_reply reply)
{
try {
Dbc newdbc = dbc.dup(args.flags);
RpcDbc rdbc = new RpcDbc(rdb, newdbc, false);
/* If this cursor has a parent txn, we need to use it too. */
if (timer != this)
rdbc.timer = timer;
reply.dbcidcl_id = server.addCursor(rdbc);
reply.status = 0;
} catch(DbException e) {
e.printStackTrace(DbServer.err);
reply.status = e.getErrno();
}
}
public void get(DbDispatcher server,
__dbc_get_msg args, __dbc_get_reply reply)
{
try {
Dbt key = new Dbt(args.keydata);
key.setPartialLength(args.keydlen);
key.setUserBufferLength(args.keyulen);
key.setPartialOffset(args.keydoff);
key.setFlags(Db.DB_DBT_MALLOC |
(args.keyflags & Db.DB_DBT_PARTIAL));
Dbt data = new Dbt(args.datadata);
data.setPartialLength(args.datadlen);
data.setUserBufferLength(args.dataulen);
data.setPartialOffset(args.datadoff);
if ((args.flags & Db.DB_MULTIPLE) != 0 ||
(args.flags & Db.DB_MULTIPLE_KEY) != 0) {
if (data.getData().length == 0)
data.setData(new byte[data.getUserBufferLength()]);
data.setFlags(Db.DB_DBT_USERMEM |
(args.dataflags & Db.DB_DBT_PARTIAL));
} else
data.setFlags(Db.DB_DBT_MALLOC |
(args.dataflags & Db.DB_DBT_PARTIAL));
reply.status = dbc.get(key, data, args.flags);
if (key.getData() == args.keydata) {
reply.keydata = new byte[key.getSize()];
System.arraycopy(key.getData(), 0, reply.keydata, 0, key.getSize());
} else
reply.keydata = key.getData();
if (data.getData() == args.datadata) {
reply.datadata = new byte[data.getSize()];
System.arraycopy(data.getData(), 0, reply.datadata, 0, data.getSize());
} else
reply.datadata = data.getData();
} catch(DbException e) {
e.printStackTrace(DbServer.err);
reply.status = e.getErrno();
reply.keydata = reply.datadata = empty;
}
}
public void pget(DbDispatcher server,
__dbc_pget_msg args, __dbc_pget_reply reply)
{
try {
Dbt skey = new Dbt(args.skeydata);
skey.setPartialLength(args.skeydlen);
skey.setPartialOffset(args.skeydoff);
skey.setUserBufferLength(args.skeyulen);
skey.setFlags(Db.DB_DBT_MALLOC |
(args.skeyflags & Db.DB_DBT_PARTIAL));
Dbt pkey = new Dbt(args.pkeydata);
pkey.setPartialLength(args.pkeydlen);
pkey.setPartialOffset(args.pkeydoff);
pkey.setUserBufferLength(args.pkeyulen);
pkey.setFlags(Db.DB_DBT_MALLOC |
(args.pkeyflags & Db.DB_DBT_PARTIAL));
Dbt data = new Dbt(args.datadata);
data.setPartialLength(args.datadlen);
data.setPartialOffset(args.datadoff);
data.setUserBufferLength(args.dataulen);
data.setFlags(Db.DB_DBT_MALLOC |
(args.dataflags & Db.DB_DBT_PARTIAL));
reply.status = dbc.get(skey, pkey, data, args.flags);
if (skey.getData() == args.skeydata) {
reply.skeydata = new byte[skey.getSize()];
System.arraycopy(skey.getData(), 0, reply.skeydata, 0, skey.getSize());
} else
reply.skeydata = skey.getData();
if (pkey.getData() == args.pkeydata) {
reply.pkeydata = new byte[pkey.getSize()];
System.arraycopy(pkey.getData(), 0, reply.pkeydata, 0, pkey.getSize());
} else
reply.pkeydata = pkey.getData();
if (data.getData() == args.datadata) {
reply.datadata = new byte[data.getSize()];
System.arraycopy(data.getData(), 0, reply.datadata, 0, data.getSize());
} else
reply.datadata = data.getData();
} catch(DbException e) {
e.printStackTrace(DbServer.err);
reply.status = e.getErrno();
}
}
public void put(DbDispatcher server,
__dbc_put_msg args, __dbc_put_reply reply)
{
try {
Dbt key = new Dbt(args.keydata);
key.setPartialLength(args.keydlen);
key.setUserBufferLength(args.keyulen);
key.setPartialOffset(args.keydoff);
key.setFlags(args.keyflags & Db.DB_DBT_PARTIAL);
Dbt data = new Dbt(args.datadata);
data.setPartialLength(args.datadlen);
data.setUserBufferLength(args.dataulen);
data.setPartialOffset(args.datadoff);
data.setFlags(args.dataflags & Db.DB_DBT_PARTIAL);
reply.status = dbc.put(key, data, args.flags);
if (reply.status == 0 &&
(args.flags == Db.DB_AFTER || args.flags == Db.DB_BEFORE) &&
rdb.db.getDbType() == Db.DB_RECNO)
reply.keydata = key.getData();
else
reply.keydata = empty;
} catch(DbException e) {
e.printStackTrace(DbServer.err);
reply.status = e.getErrno();
reply.keydata = empty;
} catch(IllegalArgumentException e) {
reply.status = DbServer.EINVAL;
reply.keydata = empty;
}
}
}
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