JPOXIdentifierFactory

java.lang.Object
- org.datanucleus.store.rdbms.identifier.AbstractIdentifierFactory
- - org.datanucleus.store.rdbms.identifier.DNIdentifierFactory
  - - org.datanucleus.store.rdbms.identifier.JPOXIdentifierFactory

All Implemented Interfaces:

IdentifierFactory
```
public class JPOXIdentifierFactory
extends DNIdentifierFactory
```
Factory that creates immutable instances of DatastoreIdentifier for mapped datastores. Provides the "JPOX" naming strategy like with DNIdentifierFactory except this uses a consistent hashing process to match JPOX.

Field Summary

Fields
Modifier and Type Field Description

private static int HASH_RANGE
Range to use for creating hased ending when truncating identifiers.
- Fields inherited from class org.datanucleus.store.rdbms.identifier.DNIdentifierFactory
  tablePrefix, tableSuffix
- Fields inherited from class org.datanucleus.store.rdbms.identifier.AbstractIdentifierFactory
  candidates, CASE_LOWER, CASE_PRESERVE, CASE_UPPER, clr, columns, dba, defaultCatalogName, defaultSchemaName, foreignkeys, indexes, namingCase, namingFactory, primarykeys, quoteString, references, sequences, tables, wordSeparator
- Fields inherited from interface org.datanucleus.store.rdbms.identifier.IdentifierFactory
  PROPERTY_DEFAULT_CATALOG, PROPERTY_DEFAULT_SCHEMA, PROPERTY_NAMING_FACTORY, PROPERTY_REQUIRED_CASE, PROPERTY_TABLE_PREFIX, PROPERTY_TABLE_SUFFIX, PROPERTY_WORD_SEPARATOR

Constructor Summary

Constructors
Constructor	Description
`JPOXIdentifierFactory(DatastoreAdapter dba, org.datanucleus.ClassLoaderResolver clr, java.util.Map props)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected java.lang.String`	`truncate(java.lang.String identifier, int length)`	Method to truncate an identifier to fit within the specified identifier length.

Methods inherited from class org.datanucleus.store.rdbms.identifier.DNIdentifierFactory
generateIdentifierNameForJavaName, getColumnIdentifierSuffix, newAdapterIndexFieldIdentifier, newDiscriminatorFieldIdentifier, newForeignKeyFieldIdentifier, newIndexFieldIdentifier, newJoinTableFieldIdentifier, newReferenceFieldIdentifier, newTableIdentifier, newTableIdentifier, newVersionFieldIdentifier

Methods inherited from class org.datanucleus.store.rdbms.identifier.AbstractIdentifierFactory
getDatastoreAdapter, getIdentifierInAdapterCase, getIdentifierNamePartsFromName, getIdentifierTruncatedToAdapterColumnLength, getNamingCase, getWordSeparator, newCandidateKeyIdentifier, newColumnIdentifier, newColumnIdentifier, newForeignKeyIdentifier, newIdentifier, newIdentifier, newIndexIdentifier, newPrimaryKeyIdentifier, newSequenceIdentifier, newTableIdentifier, newTableIdentifier, setCatalogSchemaForTable

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

- Field Detail
  - HASH_RANGE
```
private static final int HASH_RANGE
```
    Range to use for creating hased ending when truncating identifiers.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - JPOXIdentifierFactory
```
public JPOXIdentifierFactory(DatastoreAdapter dba,
                             org.datanucleus.ClassLoaderResolver clr,
                             java.util.Map props)
```
- Method Detail
  - truncate
```
protected java.lang.String truncate(java.lang.String identifier,
                                    int length)
```
    Method to truncate an identifier to fit within the specified identifier length. If truncation is necessary will use a 2 char hashcode (at the end) to attempt to create uniqueness.
    
    Overrides:
    
    truncate in class AbstractIdentifierFactory
    
    Parameters:
    
    identifier - The identifier
    
    length - The (max) length to use
    
    Returns:
    
    The truncated identifier.