Package org.datanucleus.store.odf.valuegenerator

Class IncrementGenerator

java.lang.Object

org.datanucleus.store.valuegenerator.AbstractGenerator<T>

org.datanucleus.store.valuegenerator.AbstractConnectedGenerator<Long>

org.datanucleus.store.odf.valuegenerator.IncrementGenerator

All Implemented Interfaces:

org.datanucleus.store.valuegenerator.ValueGenerator<Long>

public class IncrementGenerator
extends org.datanucleus.store.valuegenerator.AbstractConnectedGenerator<Long>

Generator that uses a collection in ODF to store and allocate identity values.

Nested Class Summary

Nested classes/interfaces inherited from class org.datanucleus.store.valuegenerator.AbstractConnectedGenerator

org.datanucleus.store.valuegenerator.AbstractConnectedGenerator.ConnectionPreference

Field Summary

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

connectionProvider, properties

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

allocationSize, block, initialValue, name, storeMgr

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

PROPERTY_CATALOG_NAME, PROPERTY_CLASS_NAME, PROPERTY_COLUMN_NAME, PROPERTY_FIELD_NAME, PROPERTY_KEY_CACHE_SIZE, PROPERTY_KEY_DATABASE_CACHE_SIZE, PROPERTY_KEY_INITIAL_VALUE, PROPERTY_KEY_MAX_VALUE, PROPERTY_KEY_MIN_VALUE, PROPERTY_ROOT_CLASS_NAME, PROPERTY_SCHEMA_NAME, PROPERTY_SEQUENCE_NAME, PROPERTY_SEQUENCETABLE_CATALOG, PROPERTY_SEQUENCETABLE_NAME_COLUMN, PROPERTY_SEQUENCETABLE_NEXTVAL_COLUMN, PROPERTY_SEQUENCETABLE_SCHEMA, PROPERTY_SEQUENCETABLE_TABLE, PROPERTY_TABLE_NAME

Constructor Summary

Constructors

Constructor	Description
IncrementGenerator(org.datanucleus.store.StoreManager storeMgr, String name, Properties props)	Constructor.

Method Summary

Modifier and Type	Method	Description
String	getName()
protected org.datanucleus.store.valuegenerator.ValueGenerationBlock<Long>	reserveBlock(long size)

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

getConnectionPreference, setConnectionProvider

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

allocate, current, currentValue, next, nextValue, obtainGenerationBlock, obtainGenerationBlock, reserveBlock

Methods inherited from class java.lang.Object

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

Constructor Detail

IncrementGenerator

public IncrementGenerator(org.datanucleus.store.StoreManager storeMgr,
                          String name,
                          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:

storeMgr - StoreManager

name - Symbolic name for this generator

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

Method Detail

getName

public String getName()

Overrides:

getName in class org.datanucleus.store.valuegenerator.AbstractGenerator<Long>

reserveBlock

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

Specified by:

reserveBlock in class org.datanucleus.store.valuegenerator.AbstractGenerator<Long>