stasis-aries-wal/stasis/operations/set.h

85 lines
3.3 KiB
C

/*---
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---*/
/**
* @file
*
* Methods that change the contents of a record. An entire record can
* be updated at once, or portions of the record can be updated.
*
* @ingroup OPERATIONS
*
* $Id$
*
**********************************************/
#ifndef __SET_H__
#define __SET_H__
/**
Changes the value of a record.
@param xid the transaction id
@param rid the recordid of the record to be changed.
@param dat the new value of the record.
*/
int Tset(int xid, recordid rid, const void * dat);
Page * TsetWithPage(int xid, recordid rid, Page *p, const void * dat);
int TsetRaw(int xid, recordid rid, const void * dat);
stasis_operation_impl stasis_op_impl_set();
stasis_operation_impl stasis_op_impl_set_inverse();
stasis_operation_impl stasis_op_impl_set_range();
stasis_operation_impl stasis_op_impl_set_range_inverse();
/**
Change an interval of bytes within a record.
@todo TsetRange could be faster. Although it uses log space
efficiently, it performs a number of extra memcpy() calls over the
entire record.
*/
compensated_function void TsetRange(int xid, recordid rid, int offset, int length, const void * dat);
#endif