InMemoryMessageStore.Builder (eBus Feed 7.4.0 API)

java.lang.Object
- net.sf.eBus.feed.historic.store.InMemoryMessageStore.Builder

Enclosing class:

InMemoryMessageStore
```
public static final class InMemoryMessageStore.Builder
extends Object
```
InMemoryMessageStore instances are created using a Builder. A Builder instance is acquired from InMemoryMessageStore.builder(). The following attributes must be set to successfully build an in-memory message store:
- non-null eBus notification message key and
- maximum store capacity > zero.
Once these values are correctly set, the target InMemoryMessageStore instance is created by calling build().

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`InMemoryMessageStore`	`build()`	Returns new `InMemoryMessageStore` based on this builder's settings.
`InMemoryMessageStore.Builder`	`key(EMessageKey key)`	Sets eBus notification message key.
`InMemoryMessageStore.Builder`	`maximumCapacity(int n)`	Sets in-memory message store maximum capacity.

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

- Method Detail
  - key
```
public InMemoryMessageStore.Builder key(EMessageKey key)
```
    Sets eBus notification message key. All message stored or retrieved from database must have this message key.
    
    Parameters:
    
    key - eBus notification message key.
    
    Returns:
    
    this Builder instance.
    
    Throws:
    
    NullPointerException - if key is null.
    
    IllegalArgumentException - if key is not an eBus notification message.
  - maximumCapacity
```
public InMemoryMessageStore.Builder maximumCapacity(int n)
```
    Sets in-memory message store maximum capacity. Once this capacity is reached, the oldest message in the store is replaced with the latest message.
    
    Parameters:
    
    n - message store capacity.
    
    Returns:
    
    this Builder instance.
    
    Throws:
    
    IllegalArgumentException - if n is ≤ zero.
  - build
```
public InMemoryMessageStore build()
```
    Returns new InMemoryMessageStore based on this builder's settings.
    
    Returns:
    
    new in-memory message store instance.
    
    Throws:
    
    net.sf.eBus.util.ValidationException - if this builder's settings are incomplete or invalid.