Poco::Data::PostgreSQL

class StatementExecutor

Library: Data/PostgreSQL
Package: PostgreSQL
Header: Poco/Data/PostgreSQL/StatementExecutor.h

Description

PostgreSQL statement executor.

Member Summary

Member Functions: bindParams, columnsReturned, execute, fetch, getAffectedRowCount, metaColumn, operator PGresult *, prepare, resultColumn, state

Enumerations

State

STMT_INITED

STMT_COMPILED

STMT_EXECUTED

Constructors

StatementExecutor

explicit StatementExecutor(
    SessionHandle & aSessionHandle
);

Creates the StatementExecutor.

Destructor

~StatementExecutor

~StatementExecutor();

Destroys the StatementExecutor.

Member Functions

bindParams

void bindParams(
    const InputParameterVector & anInputParameterVector
);

Binds the params - REQUIRED if the statement has input parameters/placeholders Pointer and list elements must stay valid for the lifetime of the StatementExecutor!

columnsReturned

std::size_t columnsReturned() const;

get the count of columns returned by the statement

execute

void execute();

Executes the statement.

fetch

bool fetch();

Fetches the data for the current row

getAffectedRowCount

std::size_t getAffectedRowCount() const;

get the count of rows affected by the statement

metaColumn

const MetaColumn & metaColumn(
    std::size_t aPosition
) const;

Returns the reference to the specified metacolumn - 0 based

operator PGresult * inline

operator PGresult * ();

Cast operator to native result handle type.

prepare

void prepare(
    const std::string & aSQLStatement
);

Prepares the statement for execution.

resultColumn

const OutputParameter & resultColumn(
    std::size_t aPosition
) const;

Returns the reference to the specified result - 0 based

state

State state() const;

Returns the current state.

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