<!--$Id: env_set_feedback.so,v 10.21 2001/10/22 15:24:28 bostic Exp $--> <!--Copyright 1997-2001 by Sleepycat Software, Inc.--> <!--All rights reserved.--> <html> <head> <title>Berkeley DB: DbEnv.set_feedback</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++"> </head> <body bgcolor=white> <a name="2"><!--meow--></a> <table width="100%"><tr valign=top> <td> <h1>DbEnv.set_feedback</h1> </td> <td align=right> <a href="../../db4-devel-4.0.14/api_java/c_index.html"><img src="../../db4-4.0.14/images/api.gif" alt="API"></a><a href="../reftoc.html"><img src="../../db4-4.0.14/images/ref.gif" alt="Ref"></a> </td></tr></table> <hr size=1 noshade> <tt> <h3><pre> import com.sleepycat.db.*; <p> public interface DbEnvFeedback { public abstract void db_feedback(DbEnv dbenv, int opcode, int pct); } public class DbEnv { public void set_feedback(DbEnvFeedback db_feedback) throws DbException; ... } </pre></h3> <h1>Description</h1> <p>Some operations performed by the Berkeley DB library can take non-trivial amounts of time. The DbEnv.set_feedback method can be used by applications to monitor progress within these operations. <p>When an operation is likely to take a long time, Berkeley DB will call the specified callback method. This method must be declared with three arguments: the first will be a reference to the enclosing environment, the second a flag value, and the third the percent of the operation that has been completed, specified as an integer value between 0 and 100. It is up to the callback method to display this information in an appropriate manner. <p>The <b>opcode</b> argument may take on any of the following values: <p><dl compact> <p><dt><a name="Db.DB_RECOVER">Db.DB_RECOVER</a><dd>The environment is being recovered. </dl> <p>The DbEnv.set_feedback interface may be used to configure Berkeley DB at any time during the life of the application. <p>The DbEnv.set_feedback method throws an exception that encapsulates a non-zero error value on failure. <h1>Class</h1> <a href="../../db4-devel-4.0.14/api_java/dbenv_class.html">DbEnv</a> <h1>See Also</h1> <a href="../../db4-devel-4.0.14/api_java/env_close.html">DbEnv.close</a>, <a href="../../db4-devel-4.0.14/api_java/env_version.html">DbEnv.get_version_string</a>, <a href="../../db4-devel-4.0.14/api_java/env_open.html">DbEnv.open</a>, <a href="../../db4-devel-4.0.14/api_java/env_remove.html">DbEnv.remove</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_cachesize.html">DbEnv.set_cachesize</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_data_dir.html">DbEnv.set_data_dir</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_errcall.html">DbEnv.set_errcall</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_error_stream.html">DbEnv.set_error_stream</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_errpfx.html">DbEnv.set_errpfx</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_feedback.html">DbEnv.set_feedback</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_flags.html">DbEnv.set_flags</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_rec_init.html">DbEnv.set_recovery_init</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_rpc_server.html">DbEnv.set_rpc_server</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_shm_key.html">DbEnv.set_shm_key</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_tas_spins.html">DbEnv.set_tas_spins</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_tmp_dir.html">DbEnv.set_tmp_dir</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_timeout.html">DbEnv.set_timeout</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_verbose.html">DbEnv.set_verbose</a>, and <a href="../../db4-devel-4.0.14/api_java/env_strerror.html">DbEnv.strerror</a>. </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db4-devel-4.0.14/api_java/c_index.html"><img src="../../db4-4.0.14/images/api.gif" alt="API"></a><a href="../reftoc.html"><img src="../../db4-4.0.14/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font> </body> </html>