本文整理汇总了C++中PreparedStatement::getParameterMetaData方法的典型用法代码示例。如果您正苦于以下问题：C++ PreparedStatement::getParameterMetaData方法的具体用法？C++ PreparedStatement::getParameterMetaData怎么用？C++ PreparedStatement::getParameterMetaData使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PreparedStatement的用法示例。
在下文中一共展示了PreparedStatement::getParameterMetaData方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: nuodb_statement_bind
int nuodb_statement_bind(struct nuodb *db, struct nuodb_statement *st,
struct nuodb_value parameters[]) {
PreparedStatement *stmt = reinterpret_cast<PreparedStatement *>(st);
try {
int parameterCount = stmt->getParameterMetaData()->getParameterCount();
for (int i=0; i < parameterCount; ++i) {
int parameterIndex = i+1;
switch (parameters[i].vt) {
case NUODB_TYPE_NULL:
stmt->setNull(parameterIndex, NUOSQL_NULL);
break;
case NUODB_TYPE_INT64:
stmt->setLong(parameterIndex, parameters[i].i64);
break;
case NUODB_TYPE_FLOAT64: {
union {
int64_t i64;
double float64;
} value = { parameters[i].i64 };
stmt->setDouble(parameterIndex, value.float64);
break;
}
case NUODB_TYPE_BOOL:
stmt->setBoolean(parameterIndex, !!parameters[i].i64);
break;
case NUODB_TYPE_STRING: {
size_t length = parameters[i].i32;
const char *s = reinterpret_cast<const char*>(parameters[i].i64);
// Extra conversion due to missing length param in the setString API
const std::string str(s, length);
stmt->setString(parameterIndex, str.c_str());
break;
}
case NUODB_TYPE_BYTES: {
int length = parameters[i].i32;
const unsigned char *bytes = reinterpret_cast<const unsigned char*>(parameters[i].i64);
stmt->setBytes(parameterIndex, length, bytes);
break;
}
case NUODB_TYPE_TIME: {
int64_t seconds = parameters[i].i64;
int32_t nanos = parameters[i].i32;
SqlTimestamp ts(seconds, nanos);
stmt->setTimestamp(parameterIndex, &ts);
break;
}
}
}
return 0;
} catch (SQLException &e) {
return setError(db, e);
}
}示例2: nuodb_statement_prepare
int nuodb_statement_prepare(struct nuodb *db, const char *sql,
struct nuodb_statement **st, int *parameter_count) {
PreparedStatement *stmt = 0;
try {
stmt = db->conn->prepareStatement(sql, RETURN_GENERATED_KEYS);
*parameter_count = stmt->getParameterMetaData()->getParameterCount();
*st = reinterpret_cast<struct nuodb_statement *>(stmt);
return 0;
} catch (SQLException &e) {
if (stmt) {
stmt->close();
}
return setError(db, e);
}
}