Caplin Systems - DSNoData (DataSource for Java 7.1.5-1128-ee5f4ae API Reference)

All Superinterfaces:

DSPacket, DSSerializable
```
public interface DSNoData
extends DSPacket
```
This class can be used to send a 'NoData' message to a DataSource peer that signals that an object has not been found and the reason why. This is most likely to occur when an active DataSource need to indicate, having received a request, that data is not available.

Should a request come in for which there is no data then a NoData message should be sent. The flags ( F_NOTFOUND, F_READDENY, F_WRITEDENY, F_DELETEOBJECT, F_UNAVAILABLE ) that may be sent are mutually exclusive.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`F_DELETEOBJECT`	Instruction to delete this object
`static int`	`F_NOTFOUND`	Indicates that the object is not found.
`static int`	`F_READDENY`	Indicates that there is no permission to read this object.
`static int`	`F_UNAVAILABLE`	Indicates that the object is unavailable at the current time
`static int`	`F_WRITEDENY`	Indicates that there is no permission to write to this object

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type Method Description

java.lang.String getSubject()
Gets this object's subject.
- Methods inherited from interface com.caplin.datasource.interfaces.DSPacket
  send, sendDirect, sendToPeer
- Methods inherited from interface com.caplin.datasource.interfaces.DSSerializable
  toBytes

- Field Detail
  - F_NOTFOUND
```
static final int F_NOTFOUND
```
    Indicates that the object is not found.
    
    See Also:
    
    Constant Field Values
  - F_READDENY
```
static final int F_READDENY
```
    Indicates that there is no permission to read this object.
    
    See Also:
    
    Constant Field Values
  - F_WRITEDENY
```
static final int F_WRITEDENY
```
    Indicates that there is no permission to write to this object
    
    See Also:
    
    Constant Field Values
  - F_DELETEOBJECT
```
static final int F_DELETEOBJECT
```
    Instruction to delete this object
    
    See Also:
    
    Constant Field Values
  - F_UNAVAILABLE
```
static final int F_UNAVAILABLE
```
    Indicates that the object is unavailable at the current time
    
    See Also:
    
    Constant Field Values
- Method Detail
  - getSubject
```
java.lang.String getSubject()
```
    Gets this object's subject.
    
    Returns:
    
    The subject name.