A result set returned from a SQL query.
More...
#include <sqlitepp/sqlitepp.h>
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| bool | canRead () const |
| | Checks whether there is data to read. More...
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| int | columnCount () const |
| | Returns the column count of the result data. More...
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| bool | next () |
| | Steps to the next row of the result (if there is one). More...
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| double | readDouble (const int column) const |
| | Returns the current double value of the result column with the given index. More...
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| int | readInt (const int column) const |
| | Returns the current integer value of the result column with the given index. More...
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| std::string | readString (const int column) const |
| | Returns the current string value of the result column with the given index. More...
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A result set returned from a SQL query.
As long as there is data (canRead()), you can read it using the read*Type* methods. To advance to the next row, use next().
◆ canRead()
| bool sqlitepp::ResultSet::canRead |
( |
| ) |
const |
Checks whether there is data to read.
- Returns
true if there is data to read; otherwise false
◆ columnCount()
| int sqlitepp::ResultSet::columnCount |
( |
| ) |
const |
Returns the column count of the result data.
You may only call this method when there is data to read (canRead()).
- Returns
- the column count of the result
- Exceptions
-
| std::logic_error | if the statement is not open or there is no data to read |
◆ next()
| bool sqlitepp::ResultSet::next |
( |
| ) |
|
Steps to the next row of the result (if there is one).
- Returns
true if there is new data to read or false if there are no more results
- Exceptions
-
| std::logic_error | if the statement is not open |
| DatabaseError | if a database error occurs during the query execution |
◆ readDouble()
| double sqlitepp::ResultSet::readDouble |
( |
const int |
column | ) |
const |
Returns the current double value of the result column with the given index.
You may only call this metod when there is data to read (canRead()).
- Parameters
-
| column | the index of the column to read from |
- Returns
- the current value of the result column with the given index
- Exceptions
-
| std::logic_error | if the statement is not open or there is no data to read |
◆ readInt()
| int sqlitepp::ResultSet::readInt |
( |
const int |
column | ) |
const |
Returns the current integer value of the result column with the given index.
You may only call this metod when there is data to read (canRead()).
- Parameters
-
| column | the index of the column to read from |
- Returns
- the current value of the result column with the given index
- Exceptions
-
| std::logic_error | if the statement is not open or there is no data to read |
◆ readString()
| std::string sqlitepp::ResultSet::readString |
( |
const int |
column | ) |
const |
Returns the current string value of the result column with the given index.
You may only call this metod when there is data to read (canRead()).
- Parameters
-
| column | the index of the column to read from |
- Returns
- the current value of the result column with the given index
- Exceptions
-
| std::logic_error | if the statement is not open or there is no data to read |
The documentation for this class was generated from the following files:
