TraceKey (Oracle Database JDBC Java API Reference)

```
public interface TraceKey
```

Field Summary

Fields
Modifier and Type Field Description

static java.util.Vector<TraceKey> INDEX_TO_KEY

static java.util.concurrent.atomic.AtomicInteger NEXT_INDEX

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`int`	`index()`	Return a unique invariant int for each object that implements this interface.
`static java.util.Iterator<TraceKey>`	`iterator()`
`java.lang.String`	`keyName()`
`static int`	`maxIndex()`
`default java.lang.String`	`namespace()`
`static int`	`nextIndex()`
`default java.lang.String`	`propertyName()`
`static void`	`register(TraceKey k)`
`default java.lang.String`	`xmlAttributeName()`

- Field Detail
  - NEXT_INDEX
```
static final java.util.concurrent.atomic.AtomicInteger NEXT_INDEX
```
  - INDEX_TO_KEY
```
static final java.util.Vector<TraceKey> INDEX_TO_KEY
```
- Method Detail
  - nextIndex
```
static int nextIndex()
```
  - maxIndex
```
static int maxIndex()
```
  - register
```
static void register(TraceKey k)
```
  - iterator
```
static java.util.Iterator<TraceKey> iterator()
```
  - index
```
int index()
```
    Return a unique invariant int for each object that implements this interface. No two objects implementing this interface can return the same value. Further the values should be compact, that is the returned value must be the least value such that at the time the object is created no other object has that value. Best practice is to set the index to the result of nextIndex().
    
    Returns:
    
    a unique invariant index
  - keyName
```
java.lang.String keyName()
```
  - namespace
```
default java.lang.String namespace()
```
  - propertyName
```
default java.lang.String propertyName()
```
  - xmlAttributeName
```
default java.lang.String xmlAttributeName()
```