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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2009 Oracle. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
#include "db_cxx.h"
DbMultipleIterator::DbMultipleIterator(const Dbt &dbt)
: data_((u_int8_t*)dbt.get_data()),
p_((u_int32_t*)(data_ + dbt.get_ulen() - sizeof(u_int32_t)))
{
}
bool DbMultipleDataIterator::next(Dbt &data)
{
if (*p_ == (u_int32_t)-1) {
data.set_data(0);
data.set_size(0);
p_ = 0;
} else {
data.set_data(data_ + *p_--);
data.set_size(*p_--);
if (data.get_size() == 0 && data.get_data() == data_)
data.set_data(0);
}
return (p_ != 0);
}
bool DbMultipleKeyDataIterator::next(Dbt &key, Dbt &data)
{
if (*p_ == (u_int32_t)-1) {
key.set_data(0);
key.set_size(0);
data.set_data(0);
data.set_size(0);
p_ = 0;
} else {
key.set_data(data_ + *p_--);
key.set_size(*p_--);
data.set_data(data_ + *p_--);
data.set_size(*p_--);
}
return (p_ != 0);
}
bool DbMultipleRecnoDataIterator::next(db_recno_t &recno, Dbt &data)
{
if (*p_ == (u_int32_t)0) {
recno = 0;
data.set_data(0);
data.set_size(0);
p_ = 0;
} else {
recno = *p_--;
data.set_data(data_ + *p_--);
data.set_size(*p_--);
}
return (p_ != 0);
}
DbMultipleBuilder::DbMultipleBuilder(Dbt &dbt) : dbt_(dbt)
{
DB_MULTIPLE_WRITE_INIT(p_, dbt_.get_DBT());
}
bool DbMultipleDataBuilder::append(void *dbuf, size_t dlen)
{
DB_MULTIPLE_WRITE_NEXT(p_, dbt_.get_DBT(), dbuf, dlen);
return (p_ != 0);
}
bool DbMultipleDataBuilder::reserve(void *&ddest, size_t dlen)
{
DB_MULTIPLE_RESERVE_NEXT(p_, dbt_.get_DBT(), ddest, dlen);
return (ddest != 0);
}
bool DbMultipleKeyDataBuilder::append(
void *kbuf, size_t klen, void *dbuf, size_t dlen)
{
DB_MULTIPLE_KEY_WRITE_NEXT(p_, dbt_.get_DBT(),
kbuf, klen, dbuf, dlen);
return (p_ != 0);
}
bool DbMultipleKeyDataBuilder::reserve(
void *&kdest, size_t klen, void *&ddest, size_t dlen)
{
DB_MULTIPLE_KEY_RESERVE_NEXT(p_, dbt_.get_DBT(),
kdest, klen, ddest, dlen);
return (kdest != 0 && ddest != 0);
}
DbMultipleRecnoDataBuilder::DbMultipleRecnoDataBuilder(Dbt &dbt) : dbt_(dbt)
{
DB_MULTIPLE_RECNO_WRITE_INIT(p_, dbt_.get_DBT());
}
bool DbMultipleRecnoDataBuilder::append(
db_recno_t recno, void *dbuf, size_t dlen)
{
DB_MULTIPLE_RECNO_WRITE_NEXT(p_, dbt_.get_DBT(),
recno, dbuf, dlen);
return (p_ != 0);
}
bool DbMultipleRecnoDataBuilder::reserve(
db_recno_t recno, void *&ddest, size_t dlen)
{
DB_MULTIPLE_RECNO_RESERVE_NEXT(p_, dbt_.get_DBT(),
recno, ddest, dlen);
return (ddest != 0);
}
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