PartitionedBucketSelectionStrategy (arcadedb-engine 22.1.2 API)

java.lang.Object
- com.arcadedb.database.bucketselectionstrategy.ThreadBucketSelectionStrategy
- - com.arcadedb.database.bucketselectionstrategy.RoundRobinBucketSelectionStrategy
  - - com.arcadedb.database.bucketselectionstrategy.PartitionedBucketSelectionStrategy

All Implemented Interfaces:

BucketSelectionStrategy
```
public class PartitionedBucketSelectionStrategy
extends RoundRobinBucketSelectionStrategy
```
Select the bucket using a partition algorithm computed as the hashed value of the properties values. This allows to predetermine in which bucket is contained a key(s) and therefore a document. There are some limitations on using this implementation: (1) field identified as partition key cannot be modified. (This could be solved in the future by removing and recreating the document in a different bucket. If the record is part of a graph, then the edges will be updated accordingly.)

Author:

Luca Garulli

Field Summary
- Fields inherited from class com.arcadedb.database.bucketselectionstrategy.ThreadBucketSelectionStrategy
  total

Constructor Summary

Constructors
Constructor Description

PartitionedBucketSelectionStrategy(String[] propertyNames)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getBucketIdByKeys(Object[] keyValues, boolean async)`
`int`	`getBucketIdByRecord(Document record, boolean async)`
`String`	`getName()`
`void`	`setType(DocumentType type)`

Methods inherited from class com.arcadedb.database.bucketselectionstrategy.ThreadBucketSelectionStrategy
toString

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

- Constructor Detail
  - PartitionedBucketSelectionStrategy
```
public PartitionedBucketSelectionStrategy(String[] propertyNames)
```
- Method Detail
  - setType
```
public void setType(DocumentType type)
```
    Specified by:
    
    setType in interface BucketSelectionStrategy
    
    Overrides:
    
    setType in class RoundRobinBucketSelectionStrategy
  - getBucketIdByRecord
```
public int getBucketIdByRecord(Document record,
                               boolean async)
```
    Specified by:
    
    getBucketIdByRecord in interface BucketSelectionStrategy
    
    Overrides:
    
    getBucketIdByRecord in class RoundRobinBucketSelectionStrategy
  - getBucketIdByKeys
```
public int getBucketIdByKeys(Object[] keyValues,
                             boolean async)
```
    Specified by:
    
    getBucketIdByKeys in interface BucketSelectionStrategy
    
    Overrides:
    
    getBucketIdByKeys in class ThreadBucketSelectionStrategy
  - getName
```
public String getName()
```
    Specified by:
    
    getName in interface BucketSelectionStrategy
    
    Overrides:
    
    getName in class RoundRobinBucketSelectionStrategy