INT32 aggrSortParser::buildNode( const BSONElement &elem, const CHAR *pCLName,
qgmOptiTreeNode *&pNode, _qgmPtrTable *pTable,
_qgmParamTable *pParamTable )
{
INT32 rc = SDB_OK;
qgmOptiSelect *pSelect = SDB_OSS_NEW qgmOptiSelect( pTable, pParamTable );
PD_CHECK( pSelect!=NULL, SDB_OOM, error, PDERROR,
"malloc failed!" );
PD_CHECK( elem.type()==Object, SDB_INVALIDARG, error, PDERROR,
"failed to parse the parameter(%s),type must be number!",
elem.fieldName() );
try
{
qgmOpField selectAll;
rc = buildOrderBy( elem, pSelect->_orderby, pTable, pCLName );
PD_RC_CHECK( rc, PDERROR,
"failed to build \"sort\" field(rc=%d)", rc );
selectAll.type = SQL_GRAMMAR::WILDCARD;
pSelect->_selector.push_back( selectAll );
pSelect->_limit = -1;
pSelect->_skip = 0;
pSelect->_type = QGM_OPTI_TYPE_SELECT;
pSelect->_hasFunc = FALSE;
rc = pTable->getOwnField( AGGR_CL_DEFAULT_ALIAS, pSelect->_alias );
PD_RC_CHECK( rc, PDERROR, "failed to get the field(%s)", AGGR_CL_DEFAULT_ALIAS );
if ( pCLName != NULL )
{
qgmField clValAttr;
qgmField clValRelegation;
rc = pTable->getOwnField( pCLName, clValAttr );
PD_RC_CHECK( rc, PDERROR, "failed to get the field(%s)", pCLName );
rc = pTable->getOwnField( AGGR_CL_DEFAULT_ALIAS, pSelect->_collection.alias );
PD_RC_CHECK( rc, PDERROR, "failed to get the field(%s)", AGGR_CL_DEFAULT_ALIAS );
pSelect->_collection.value = qgmDbAttr( clValRelegation, clValAttr );
pSelect->_collection.type = SQL_GRAMMAR::DBATTR;
}
}
catch ( std::exception &e )
{
PD_CHECK( SDB_INVALIDARG, SDB_INVALIDARG, error, PDERROR,
"failed to parse the \"sort\", received unexpected error:%s",
e.what() );
}
pNode = pSelect;
done:
return rc;
error:
SAFE_OSS_DELETE( pSelect );
goto done;
}
INT32 aggrProjectParser::buildNode( const BSONElement &elem,
const CHAR *pCLName,
qgmOptiTreeNode *&pNode,
_qgmPtrTable *pTable,
_qgmParamTable *pParamTable )
{
INT32 rc = SDB_OK;
BOOLEAN hasFunc = FALSE;
BSONObj obj;
qgmOptiSelect *pSelect = SDB_OSS_NEW qgmOptiSelect( pTable, pParamTable );
PD_CHECK( pSelect!=NULL, SDB_OOM, error, PDERROR,
"malloc failed" );
PD_CHECK( elem.type() == Object, SDB_INVALIDARG, error, PDERROR,
"failed to parse the parameter:%s(type=%d, expectType=%d)",
elem.fieldName(), elem.type(), Object );
try
{
obj = elem.embeddedObject();
{
PD_CHECK( !obj.isEmpty(), SDB_INVALIDARG, error, PDERROR,
"Parameter-object can't be empty!" );
}
BSONObjIterator iter( obj );
while ( iter.more() )
{
BSONElement beField = iter.next();
const CHAR *pFieldName = beField.fieldName();
PD_CHECK( pFieldName[0] != AGGR_KEYWORD_PREFIX, SDB_INVALIDARG, error, PDERROR,
"failed to parse \"project\", field name can't begin with\"$\"!" );
rc = parseSelectorField( beField, pCLName, pSelect->_selector,
pTable, hasFunc );
PD_RC_CHECK( rc, PDERROR, "failed to parse the field:%s", pFieldName );
}
if ( pSelect->_selector.empty() )
{
qgmOpField selectAll;
selectAll.type = SQL_GRAMMAR::WILDCARD;
pSelect->_selector.push_back( selectAll );
}
}
catch ( std::exception &e )
{
PD_CHECK( SDB_INVALIDARG, SDB_INVALIDARG, error, PDERROR,
"failed to parse the Parameter-object, received unexpected error:%s",
e.what() );
}
pSelect->_limit = -1;
pSelect->_skip = 0;
pSelect->_type = QGM_OPTI_TYPE_SELECT;
pSelect->_hasFunc = hasFunc;
rc = pTable->getOwnField( AGGR_CL_DEFAULT_ALIAS, pSelect->_alias );
PD_RC_CHECK( rc, PDERROR, "failed to get the field(%s)", AGGR_CL_DEFAULT_ALIAS );
if ( pCLName != NULL )
{
qgmField clValAttr;
qgmField clValRelegation;
rc = pTable->getOwnField( pCLName, clValAttr );
PD_RC_CHECK( rc, PDERROR, "failed to get the field(%s)", pCLName );
rc = pTable->getOwnField( AGGR_CL_DEFAULT_ALIAS, pSelect->_collection.alias );
PD_RC_CHECK( rc, PDERROR, "failed to get the field(%s)", AGGR_CL_DEFAULT_ALIAS );
pSelect->_collection.value = qgmDbAttr( clValRelegation, clValAttr );
pSelect->_collection.type = SQL_GRAMMAR::DBATTR;
}
pNode = pSelect;
done:
return rc;
error:
SAFE_OSS_DELETE( pSelect );
goto done;
}
/*
aggrLimitParser implement
*/
INT32 aggrLimitParser::buildNode( const BSONElement &elem,
const CHAR *pCLName,
qgmOptiTreeNode *&pNode,
_qgmPtrTable *pTable,
_qgmParamTable *pParamTable )
{
INT32 rc = SDB_OK ;
qgmOptiSelect *pSelect = NULL ;
pSelect = SDB_OSS_NEW qgmOptiSelect( pTable, pParamTable ) ;
PD_CHECK( pSelect != NULL, SDB_OOM, error, PDERROR,
"Malloc failed!" ) ;
PD_CHECK( elem.isNumber(), SDB_INVALIDARG, error, PDERROR,
"Failed to parse the parameter(%s),type must be number!",
elem.toString( TRUE, TRUE ).c_str() ) ;
try
{
qgmOpField selectAll ;
selectAll.type = SQL_GRAMMAR::WILDCARD;
pSelect->_selector.push_back( selectAll ) ;
pSelect->_limit = elem.numberLong() ;
pSelect->_skip = 0 ;
pSelect->_type = QGM_OPTI_TYPE_SELECT ;
pSelect->_hasFunc = FALSE ;
rc = pTable->getOwnField( AGGR_CL_DEFAULT_ALIAS, pSelect->_alias ) ;
PD_RC_CHECK( rc, PDERROR, "Failed to get the field[%s], rc: %d",
AGGR_CL_DEFAULT_ALIAS, rc ) ;
if ( pCLName != NULL )
{
qgmField clValAttr ;
qgmField clValRelegation ;
rc = pTable->getOwnField( pCLName, clValAttr ) ;
PD_RC_CHECK( rc, PDERROR, "Failed to get the field[%s], rc: %d",
pCLName, rc ) ;
rc = pTable->getOwnField( AGGR_CL_DEFAULT_ALIAS,
pSelect->_collection.alias ) ;
PD_RC_CHECK( rc, PDERROR, "Failed to get the field[%s], rc: %d",
AGGR_CL_DEFAULT_ALIAS, rc ) ;
pSelect->_collection.value = qgmDbAttr( clValRelegation,
clValAttr ) ;
pSelect->_collection.type = SQL_GRAMMAR::DBATTR ;
}
}
catch ( std::exception &e )
{
PD_CHECK( FALSE, SDB_INVALIDARG, error, PDERROR,
"Failed to parse the \"limit\", occur unexpection: %s",
e.what() ) ;
}
pNode = pSelect ;
done:
return rc ;
error:
SAFE_OSS_DELETE( pSelect ) ;
goto done ;
}