org.datanucleus.store.hbase.valuegenerator
Class IncrementGenerator

java.lang.Object
  org.datanucleus.store.valuegenerator.AbstractGenerator
      org.datanucleus.store.valuegenerator.AbstractDatastoreGenerator
          org.datanucleus.store.hbase.valuegenerator.IncrementGenerator

All Implemented Interfaces:

org.datanucleus.store.valuegenerator.ValueGenerator

public class IncrementGenerator
extends org.datanucleus.store.valuegenerator.AbstractDatastoreGenerator
implements org.datanucleus.store.valuegenerator.ValueGenerator

Generator that uses a table in HBase to store and allocate identity values.

Field Summary

Fields inherited from class org.datanucleus.store.valuegenerator.AbstractDatastoreGenerator

connectionProvider, storeMgr

Fields inherited from class org.datanucleus.store.valuegenerator.AbstractGenerator

allocationSize, block, initialValue, LOCALISER, name, properties, repositoryExists

Constructor Summary

IncrementGenerator(java.lang.String name, java.util.Properties props)
Constructor.

Method Summary

java.lang.String	getName()
protected org.datanucleus.store.valuegenerator.ValueGenerationBlock	reserveBlock(long size)

Methods inherited from class org.datanucleus.store.valuegenerator.AbstractDatastoreGenerator

setConnectionProvider, setStoreManager

Methods inherited from class org.datanucleus.store.valuegenerator.AbstractGenerator

allocate, createRepository, current, currentValue, getStorageClass, next, nextValue, obtainGenerationBlock, obtainGenerationBlock, repositoryExists, requiresRepository, reserveBlock

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.datanucleus.store.valuegenerator.ValueGenerator

allocate, current, currentValue, next, nextValue

Constructor Detail

IncrementGenerator

public IncrementGenerator(java.lang.String name,
                          java.util.Properties props)

Constructor. Will receive the following properties (as a minimum) through this constructor.

• class-name : Name of the class whose object is being inserted.
• root-class-name : Name of the root class in this inheritance tree
• field-name : Name of the field with the strategy (unless datastore identity field)
• catalog-name : Catalog of the table (if specified)
• schema-name : Schema of the table (if specified)
• table-name : Name of the root table for this inheritance tree (containing the field).
• column-name : Name of the column in the table (for the field)
• sequence-name : Name of the sequence (if specified in MetaData as "sequence)

Parameters:

name - Symbolic name for this generator

props - Properties controlling the behaviour of the generator (or null if not required).

Method Detail

getName

public java.lang.String getName()

Specified by:

getName in interface org.datanucleus.store.valuegenerator.ValueGenerator

Overrides:

getName in class org.datanucleus.store.valuegenerator.AbstractGenerator

reserveBlock

protected org.datanucleus.store.valuegenerator.ValueGenerationBlock reserveBlock(long size)

Specified by:

reserveBlock in class org.datanucleus.store.valuegenerator.AbstractGenerator