PrimaryKeys (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.index.sai.utils.PrimaryKeys

All Implemented Interfaces:

java.lang.Iterable<PrimaryKey>
```
@ThreadSafe
public class PrimaryKeys
extends java.lang.Object
implements java.lang.Iterable<PrimaryKey>
```
A sorted set of PrimaryKeys. The primary keys are sorted first by token, then by partition key value, and then by clustering.

Constructor Summary

Constructors
Constructor Description

PrimaryKeys()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`add(PrimaryKey key)`	Adds a `PrimaryKey` and returns the on-heap memory used if the key was added
`boolean`	`isEmpty()`
`java.util.Iterator<PrimaryKey>`	`iterator()`
`java.util.SortedSet<PrimaryKey>`	`keys()`
`int`	`size()`
`long`	`unsharedHeapSize()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable
forEach, spliterator

Constructor Detail
- PrimaryKeys
```
public PrimaryKeys()
```

Method Detail

add
```
public long add(PrimaryKey key)
```
Adds a PrimaryKey and returns the on-heap memory used if the key was added

keys

public java.util.SortedSet<PrimaryKey> keys()

size
```
public int size()
```

isEmpty
```
public boolean isEmpty()
```

unsharedHeapSize
```
public long unsharedHeapSize()
```

iterator
```
public java.util.Iterator<PrimaryKey> iterator()
```
Specified by:

iterator in interface java.lang.Iterable<PrimaryKey>