diff options
Diffstat (limited to 'bdb/rpc_server/java/RpcDbc.java')
| -rw-r--r-- | bdb/rpc_server/java/RpcDbc.java | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/bdb/rpc_server/java/RpcDbc.java b/bdb/rpc_server/java/RpcDbc.java new file mode 100644 index 00000000000..a37b4ee4896 --- /dev/null +++ b/bdb/rpc_server/java/RpcDbc.java @@ -0,0 +1,238 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 2001-2002 + * Sleepycat Software. All rights reserved. + * + * $Id: RpcDbc.java,v 1.3 2002/08/09 01:56:10 bostic 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.get_errno(); + } finally { + server.delCursor(this); + } + } + + 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.get_errno(); + } + } + + public void del(DbDispatcher server, + __dbc_del_msg args, __dbc_del_reply reply) + { + try { + reply.status = dbc.del(args.flags); + } catch(DbException e) { + e.printStackTrace(DbServer.err); + reply.status = e.get_errno(); + } + } + + 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.get_errno(); + } + } + + public void get(DbDispatcher server, + __dbc_get_msg args, __dbc_get_reply reply) + { + try { + Dbt key = new Dbt(args.keydata); + key.set_dlen(args.keydlen); + key.set_ulen(args.keyulen); + key.set_doff(args.keydoff); + key.set_flags(Db.DB_DBT_MALLOC | + (args.keyflags & Db.DB_DBT_PARTIAL)); + + Dbt data = new Dbt(args.datadata); + data.set_dlen(args.datadlen); + data.set_ulen(args.dataulen); + data.set_doff(args.datadoff); + if ((args.flags & Db.DB_MULTIPLE) != 0 || + (args.flags & Db.DB_MULTIPLE_KEY) != 0) { + if (data.get_data().length == 0) + data.set_data(new byte[data.get_ulen()]); + data.set_flags(Db.DB_DBT_USERMEM | + (args.dataflags & Db.DB_DBT_PARTIAL)); + } else + data.set_flags(Db.DB_DBT_MALLOC | + (args.dataflags & Db.DB_DBT_PARTIAL)); + + reply.status = dbc.get(key, data, args.flags); + + if (key.get_data() == args.keydata) { + reply.keydata = new byte[key.get_size()]; + System.arraycopy(key.get_data(), 0, reply.keydata, 0, key.get_size()); + } else + reply.keydata = key.get_data(); + + if (data.get_data() == args.datadata) { + reply.datadata = new byte[data.get_size()]; + System.arraycopy(data.get_data(), 0, reply.datadata, 0, data.get_size()); + } else + reply.datadata = data.get_data(); + } catch(DbException e) { + e.printStackTrace(DbServer.err); + reply.status = e.get_errno(); + 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.set_dlen(args.skeydlen); + skey.set_doff(args.skeydoff); + skey.set_ulen(args.skeyulen); + skey.set_flags(Db.DB_DBT_MALLOC | + (args.skeyflags & Db.DB_DBT_PARTIAL)); + + Dbt pkey = new Dbt(args.pkeydata); + pkey.set_dlen(args.pkeydlen); + pkey.set_doff(args.pkeydoff); + pkey.set_ulen(args.pkeyulen); + pkey.set_flags(Db.DB_DBT_MALLOC | + (args.pkeyflags & Db.DB_DBT_PARTIAL)); + + Dbt data = new Dbt(args.datadata); + data.set_dlen(args.datadlen); + data.set_doff(args.datadoff); + data.set_ulen(args.dataulen); + data.set_flags(Db.DB_DBT_MALLOC | + (args.dataflags & Db.DB_DBT_PARTIAL)); + + reply.status = dbc.pget(skey, pkey, data, args.flags); + + if (skey.get_data() == args.skeydata) { + reply.skeydata = new byte[skey.get_size()]; + System.arraycopy(skey.get_data(), 0, reply.skeydata, 0, skey.get_size()); + } else + reply.skeydata = skey.get_data(); + + if (pkey.get_data() == args.pkeydata) { + reply.pkeydata = new byte[pkey.get_size()]; + System.arraycopy(pkey.get_data(), 0, reply.pkeydata, 0, pkey.get_size()); + } else + reply.pkeydata = pkey.get_data(); + + if (data.get_data() == args.datadata) { + reply.datadata = new byte[data.get_size()]; + System.arraycopy(data.get_data(), 0, reply.datadata, 0, data.get_size()); + } else + reply.datadata = data.get_data(); + } catch(DbException e) { + e.printStackTrace(DbServer.err); + reply.status = e.get_errno(); + } + } + + public void put(DbDispatcher server, + __dbc_put_msg args, __dbc_put_reply reply) + { + try { + Dbt key = new Dbt(args.keydata); + key.set_dlen(args.keydlen); + key.set_ulen(args.keyulen); + key.set_doff(args.keydoff); + key.set_flags(args.keyflags & Db.DB_DBT_PARTIAL); + + Dbt data = new Dbt(args.datadata); + data.set_dlen(args.datadlen); + data.set_ulen(args.dataulen); + data.set_doff(args.datadoff); + data.set_flags(args.dataflags); + + reply.status = dbc.put(key, data, args.flags); + + if (reply.status == 0 && + (args.flags == Db.DB_AFTER || args.flags == Db.DB_BEFORE) && + rdb.db.get_type() == Db.DB_RECNO) + reply.keydata = key.get_data(); + else + reply.keydata = empty; + } catch(DbException e) { + e.printStackTrace(DbServer.err); + reply.status = e.get_errno(); + reply.keydata = empty; + } + } +} |