Transaction (Transaction Client 1.0.2 API)

All Known Implementing Classes:

AbstractTransaction
```
public interface Transaction
```
This interface defines the transaction state and behavior exposed to users.

Nested Class Summary

Nested Classes
Modifier and Type Interface and Description

static class Transaction.Status

Nested Classes
Modifier and Type	Interface and Description
`static class`	`Transaction.Status`

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`appendMetadata(String key, Object value)` Set of methods to attach some metadata to a transaction object.
`long`	`getEpoch()` Returns the epoch given by the TSOServer
`org.apache.phoenix.thirdparty.com.google.common.base.Optional<Object>`	`getMetadata(String key)`
`long`	`getReadTimestamp()` Returns the read timestamp for this transaction.
`Transaction.Status`	`getStatus()` Returns the current transaction `Transaction.Status`
`long`	`getTransactionId()` Returns the transaction identifier
`long`	`getWriteTimestamp()` Returns the write timestamp for this transaction.
`boolean`	`isLowLatency()` Returns whether the transaction was created by a lowLatency TransactionalManager
`boolean`	`isRollbackOnly()` Returns whether the transaction was marked for rollback or not
`void`	`setMetadata(String key, Object value)`
`void`	`setRollbackOnly()` Forces the transaction to rollback, even when there's an intention to commit it.

- Method Detail
  - getTransactionId
```
long getTransactionId()
```
    Returns the transaction identifier
    
    Returns:
    
    the transaction identifier
  - getEpoch
```
long getEpoch()
```
    Returns the epoch given by the TSOServer
    
    Returns:
    
    the transaction's TSOServer epoch
  - getStatus
```
Transaction.Status getStatus()
```
    Returns the current transaction Transaction.Status
    
    Returns:
    
    transaction status
  - getReadTimestamp
```
long getReadTimestamp()
```
    Returns the read timestamp for this transaction.
    
    Returns:
    
    read timestamp
  - getWriteTimestamp
```
long getWriteTimestamp()
```
    Returns the write timestamp for this transaction.
    
    Returns:
    
    write timestamp
  - setRollbackOnly
```
void setRollbackOnly()
```
    Forces the transaction to rollback, even when there's an intention to commit it.
  - isRollbackOnly
```
boolean isRollbackOnly()
```
    Returns whether the transaction was marked for rollback or not
    
    Returns:
    
    whether the transaction is marked for rollback or not
  - appendMetadata
```
void appendMetadata(String key,
                    Object value)
```
    Set of methods to attach some metadata to a transaction object. One example of such metadata are notifications Expects they metadata stored under key "key" to be of the "Set" type, append "value" to the existing set or creates a new one
    
    Parameters:
    
    key - a key, like in hashtable
    
    value - a value to associate with the given key
  - setMetadata
```
void setMetadata(String key,
                 Object value)
```
  - getMetadata
```
org.apache.phoenix.thirdparty.com.google.common.base.Optional<Object> getMetadata(String key)
```
  - isLowLatency
```
boolean isLowLatency()
```
    Returns whether the transaction was created by a lowLatency TransactionalManager
    
    Returns:
    
    whether the transaction was created by a lowLatency TransactionalManager

Interface Transaction

Nested Class Summary

Method Summary

Method Detail

getTransactionId

getEpoch

getStatus

getReadTimestamp

getWriteTimestamp

setRollbackOnly

isRollbackOnly

appendMetadata

setMetadata

getMetadata

isLowLatency