#include <value.h>
Public Member Functions | |
| Value (IValue *value=0) | |
| template<typename T> | |
| bool | getValue (T &ret) const |
| Explicit data-access. | |
| template<typename T> | |
| bool | get (T &ret) const |
| Shorter name for getValue. | |
| bool | operator! () const |
| Returns true, if this class is not connected to a actual statement. | |
| const IValue * | getImpl () const |
| Returns the actual implementation-class. | |
| bool | isNull () const |
| Explicit data-access. | |
| bool | getBool () const |
| return true, when value represents boolean true. | |
| int | getInt () const |
| tries to convert value into an int. | |
| long | getLong () const |
| tries to convert value into an long. | |
| unsigned | getUnsigned () const |
| tries to convert value into an unsigned. | |
| unsigned | getUnsignedLong () const |
| tries to convert value into an unsigned. | |
| int32_t | getInt32 () const |
| tries to convert value into an int32_t. | |
| uint32_t | getUnsigned32 () const |
| tries to convert value into an uint32_t. | |
| int64_t | getInt64 () const |
| tries to convert value into an int64_t. | |
| uint64_t | getUnsigned64 () const |
| tries to convert value into an uint64_t. | |
| Decimal | getDecimal () const |
| tries to convert value into a Decimal. | |
| float | getFloat () const |
| tries to convert value into an float. | |
| double | getDouble () const |
| tries to convert value into an double. | |
| char | getChar () const |
| returns the first character of the text-representation. | |
| std::string | getString () const |
| returns the value as a string. | |
| void | getString (std::string &ret) const |
| fills the passed string with the value. | |
| Blob | getBlob () const |
| Returns the value as a blob. | |
| void | getBlob (Blob &blob) const |
| Returns the value as a blob. | |
| Date | getDate () const |
| returns the value as a Date. | |
| Time | getTime () const |
| returns the value as a Time. | |
| Datetime | getDatetime () const |
| returns the value as a Datetime. | |
| bool tntdb::Value::isNull | ( | ) | const [inline] |
Explicit data-access.
The getXXX-methods return the value in the requested type. If the value can't be converted to the requested type, a exception of type tntdb::TypeError is thrown. return true, when value is null
| bool tntdb::Value::getBool | ( | ) | const [inline] |
return true, when value represents boolean true.
| int tntdb::Value::getInt | ( | ) | const [inline] |
tries to convert value into an int.
| long tntdb::Value::getLong | ( | ) | const [inline] |
tries to convert value into an long.
| unsigned tntdb::Value::getUnsigned | ( | ) | const [inline] |
tries to convert value into an unsigned.
| unsigned tntdb::Value::getUnsignedLong | ( | ) | const [inline] |
tries to convert value into an unsigned.
| int32_t tntdb::Value::getInt32 | ( | ) | const [inline] |
tries to convert value into an int32_t.
| uint32_t tntdb::Value::getUnsigned32 | ( | ) | const [inline] |
tries to convert value into an uint32_t.
| int64_t tntdb::Value::getInt64 | ( | ) | const [inline] |
tries to convert value into an int64_t.
| uint64_t tntdb::Value::getUnsigned64 | ( | ) | const [inline] |
tries to convert value into an uint64_t.
| float tntdb::Value::getFloat | ( | ) | const [inline] |
tries to convert value into an float.
| double tntdb::Value::getDouble | ( | ) | const [inline] |
tries to convert value into an double.
| char tntdb::Value::getChar | ( | ) | const [inline] |
returns the first character of the text-representation.
| std::string tntdb::Value::getString | ( | ) | const [inline] |
returns the value as a string.
| void tntdb::Value::getString | ( | std::string & | ret | ) | const [inline] |
fills the passed string with the value.
this might be slightly more efficient than just returning a new string since one copy is saved.
| Blob tntdb::Value::getBlob | ( | ) | const [inline] |
Returns the value as a blob.
This is more or less an alias to getString just to stress, that the data is truly binary and not some text value.
| void tntdb::Value::getBlob | ( | Blob & | blob | ) | const [inline] |
Returns the value as a blob.
| bool tntdb::Value::getValue | ( | T & | ret | ) | const [inline] |
Explicit data-access.
The get-template return false if the value is null. Otherwise the passed reference is filled with the value. If the value can't be converted to the requested type, a exception of type tntdb::TypeError is thrown.
In contrast to the getXXX-methods the type is not specified explictely but determined by the passed reference.
The extraction is actually done using the operator>> with a l-value of const Value& and a r-value of a reference to the actual type. This operator is defined for standard types and may be defined for user defined types.
| bool tntdb::Value::get | ( | T & | ret | ) | const [inline] |
Shorter name for getValue.
| bool tntdb::Value::operator! | ( | ) | const [inline] |
Returns true, if this class is not connected to a actual statement.
| const IValue* tntdb::Value::getImpl | ( | ) | const [inline] |
Returns the actual implementation-class.
1.5.6