TxnLogProposalIterator (Apache ZooKeeper - Server 3.9.3 API)

java.lang.Object
- org.apache.zookeeper.server.TxnLogProposalIterator

All Implemented Interfaces:

Iterator<Leader.Proposal>
```
public class TxnLogProposalIterator
extends Object
implements Iterator<Leader.Proposal>
```
This class provides an iterator interface to access Proposal deserialized from on-disk txnlog. The iterator deserializes one proposal at a time to reduce memory footprint. Note that the request part of the proposal is not initialized and set to null since we don't need it during follower sync-up.

Field Summary

Fields
Modifier and Type Field Description

static TxnLogProposalIterator EMPTY_ITERATOR

Constructor Summary

Constructors
Constructor Description

TxnLogProposalIterator(TxnLog.TxnIterator itr)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Close the files and release the resources which are used for iterating transaction records
`boolean`	`hasNext()`
`Leader.Proposal`	`next()`	Proposal returned by this iterator has request part set to null, since it is not used for follower sync-up.
`void`	`remove()`

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

Methods inherited from interface java.util.Iterator
forEachRemaining

- Field Detail
  - EMPTY_ITERATOR
```
public static final TxnLogProposalIterator EMPTY_ITERATOR
```
- Constructor Detail
  - TxnLogProposalIterator
```
public TxnLogProposalIterator(TxnLog.TxnIterator itr)
```
- Method Detail
  - hasNext
```
public boolean hasNext()
```
    Specified by:
    
    hasNext in interface Iterator<Leader.Proposal>
  - next
```
public Leader.Proposal next()
```
    Proposal returned by this iterator has request part set to null, since it is not used for follower sync-up.
    
    Specified by:
    
    next in interface Iterator<Leader.Proposal>
  - remove
```
public void remove()
```
    Specified by:
    
    remove in interface Iterator<Leader.Proposal>
  - close
```
public void close()
```
    Close the files and release the resources which are used for iterating transaction records