c-treeDB API API for C

ctdbAddMRTTable

ctdbAddMRTTable() adds an existing MRTTable definition to the database dictionary.

Declaration

CTDBRET ctdbAddMRTTable(pCTDBDATABASE pDatabase, pTEXT Name, pTEXT ParentName, UINT info);

Description

pDatabase: the database handle
Name: the MRTTable name
ParentName: the host table name
info: the MRTTable definition number

ctdbAddMRTTable() functions much as ctdbAddTable() in adding an existing table to the database dictionary.

Return Values

Value	Symbolic Constant	Explanation
0	NO_ERROR	Successful operation.

See c-tree Plus Error Codes for a complete listing of valid c-tree Plus error values.

Example

Here is example pseudo code to add an existing MRTTable to a database dictionary. This example also demonstrates the ctdbAllocVTableInfo() ctdbGetVTableInfoFromTable(), and ctdbAddMRTTable(), ctdbFreeVTableInfo() functions.

For this example, assume that a MRTTable is already defined and you copy the host table to another machine. In this case, you simply need to add the tables to the new database dictionary.

pCTDBVTABLEINFO VTableInfo;

pCTDBTABLE hTable;

hTable = ctdbAllocTable(hDatabase);

if (hTable == NULL)

{

/* error */

}

retval = ctdbOpenTable(hTable, "tutorial_host", CTOPEN_EXCLUSIVE);

if (retval != CTDBRET_OK)

{

/* error */

}

VTableInfo = ctdbAllocVTableInfo(hTable, 200); /*retrieve max 200 definition (which is the maximum supported) */

if (VTableInfo == NULL)

{

/* error */

}

ctdbGetVTableInfoFromTable(VTableInfo);

ctdbCloseTable(hTable);

for (i = 0; i < VTableInfo->actual_elements; i++)

{

retval = ctdbAddMRTTable(hDatabase, VTableInfo->data[i].name, "tutorial_host", VTableInfo->data[i].id);

if (retval != CTDBRET_OK)

{

/* error */

}

ctdbFreeVTableInfo(VTableInfo );