Component: ParsedQuery

Required Interfaces

Operator AggOperator
TupleIntf
AttrUse
QueryResultIntf
Leds
Table
DBBuffer
TinyDBError finalizeAggExpr(QueryResult *qr, ParsedQueryPtr q, Expr *e, char *result_buf)
short getGroupNoFromQr(QueryResult *qr)

Provided Interfaces

ParsedQueryIntf

Function Index

command bool ParsedQueryIntf.queryFieldIsNull (uint8_t field)
command bool ParsedQueryIntf.queryFieldIsTyped (uint8_t field)
command Expr ParsedQueryIntf.getExpr (ParsedQueryPtr q, uint8_t n)
command ExprPtr ParsedQueryIntf.getExprPtr (ParsedQueryPtr q, uint8_t n)
command uint8_t ParsedQueryIntf.getFieldId (ParsedQueryPtr q, uint8_t n)
command result_t ParsedQueryIntf.setExpr (ParsedQueryPtr q, uint8_t n, Expr e)
command TuplePtr ParsedQueryIntf.getTuplePtr (ParsedQueryPtr q)
command short ParsedQueryIntf.baseSize (QueryPtr q)
command short ParsedQueryIntf.pqSize (ParsedQueryPtr pq)
command uint8_t ParsedQueryIntf.numResultFields (ParsedQueryPtr q, bool *agg)
command TinyDBError ParsedQueryIntf.getResultField (ParsedQueryPtr q, QueryResultPtr qr, uint8_t resultid, char *result_buf) Copy data from the field resultid (as returned by getResultId) of qr into result_buf
command TinyDBError ParsedQueryIntf.getResultId (ParsedQueryPtr q, Field *f, uint8_t *id) Set id to the be the index into query results from q corresponding to field f Return err_InvalidIndex if the query does not contain a corresponding field
command result_t ParsedQueryIntf.getFieldType (ParsedQuery *pq, uint8_t fieldIdx, uint8_t *type) Return the type of the specified field index from pq in type.
command bool ParsedQueryIntf.typeCheck (ParsedQuery *dest, ParsedQuery *select) Verify that the schema of the destination query matches the schema of the select query.
event result_t AttrUse.getAttrDone (char *name, char *resultBuf, SchemaErrorNo errorNo)
event result_t AttrUse.startAttrDone (uint8_t id)
event TinyDBError AggOperator.processedResult (QueryResultPtr qr, ParsedQueryPtr q, ExprPtr e)
event TinyDBError AggOperator.processedTuple (TuplePtr t, ParsedQueryPtr q, ExprPtr e, bool passed)
event result_t Table.addNamedFieldDone (result_t success)
event result_t DBBuffer.resultReady (uint8_t bufferId)
event result_t DBBuffer.getNext (uint8_t bufferId)
event result_t DBBuffer.allocComplete (uint8_t bufferId, TinyDBError result)
event result_t DBBuffer.getComplete (uint8_t bufferId, QueryResult *buf, TinyDBError result)
event result_t DBBuffer.putComplete (uint8_t bufferId, QueryResult *buf, TinyDBError err)
event result_t DBBuffer.openComplete (uint8_t bufId, TinyDBError err)

Function Descriptions

ParsedQueryIntf.getFieldType

command result_t ParsedQueryIntf.getFieldType (ParsedQuery *pq, uint8_t fieldIdx, uint8_t *type)

Return the type of the specified field index from pq in type. Return FAIL if the index is invalid, or the field is NULL.

Parameters:	pq - The query to get the field type from fieldIdx - The index of the field whose type is desired type - (on return) The type of the requested field
Returns:	FAIL if the index is valid or the field is NULL

ParsedQueryIntf.typeCheck

command bool ParsedQueryIntf.typeCheck (ParsedQuery *dest, ParsedQuery *select)

Verify that the schema of the destination query matches the schema of the select query. The dest query must create a buffer and have a table of named fields set up. The number, order, and type of these fields must match the fields in the select query.

Parameters:

dest - A ParsedQuery with a Table of named, typed fields

select - A ParsedQuery that will insert into dest