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https://github.com/berkeleydb/libdb.git
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85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
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/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 2000, 2011 Oracle and/or its affiliates. All rights reserved.
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*
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* $Id$
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*/
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/*
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* Do some regression tests for constructors.
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* Run normally (without arguments) it is a simple regression test.
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* Run with a numeric argument, it repeats the regression a number
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* of times, to try to determine if there are memory leaks.
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*/
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#include <db_cxx.h>
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#include <iostream>
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using namespace std;
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int main(int argc, char *argv[])
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{
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try {
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Db *db = new Db(NULL, 0);
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db->open(NULL, "my.db", NULL, DB_BTREE, DB_CREATE, 0644);
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// populate our massive database.
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// all our strings include null for convenience.
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// Note we have to cast for idiomatic
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// usage, since newer gcc requires it.
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Dbt *keydbt = new Dbt((char*)"key", 4);
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Dbt *datadbt = new Dbt((char*)"data", 5);
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db->put(NULL, keydbt, datadbt, 0);
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// Now, retrieve. We could use keydbt over again,
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// but that wouldn't be typical in an application.
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Dbt *goodkeydbt = new Dbt((char*)"key", 4);
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Dbt *badkeydbt = new Dbt((char*)"badkey", 7);
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Dbt *resultdbt = new Dbt();
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resultdbt->set_flags(DB_DBT_MALLOC);
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int ret;
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if ((ret = db->get(NULL, goodkeydbt, resultdbt, 0)) != 0) {
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cout << "get: " << DbEnv::strerror(ret) << "\n";
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}
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else {
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char *result = (char *)resultdbt->get_data();
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cout << "got data: " << result << "\n";
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}
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if ((ret = db->get(NULL, badkeydbt, resultdbt, 0)) != 0) {
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// We expect this...
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cout << "get using bad key: "
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<< DbEnv::strerror(ret) << "\n";
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}
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else {
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char *result = (char *)resultdbt->get_data();
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cout << "*** got data using bad key!!: "
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<< result << "\n";
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}
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// Now, truncate and make sure that it's really gone.
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cout << "truncating data...\n";
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u_int32_t nrecords;
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db->truncate(NULL, &nrecords, 0);
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cout << "truncate returns " << nrecords << "\n";
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if ((ret = db->get(NULL, goodkeydbt, resultdbt, 0)) != 0) {
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// We expect this...
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cout << "after truncate get: "
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<< DbEnv::strerror(ret) << "\n";
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}
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else {
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char *result = (char *)resultdbt->get_data();
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cout << "got data: " << result << "\n";
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}
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db->close(0);
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cout << "finished test\n";
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}
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catch (DbException &dbe) {
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cerr << "Db Exception: " << dbe.what();
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}
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return 0;
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}
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