Examples of TableGenerator

javax.persistence.TableGenerator
net.sourceforge.jpaxjc.ns.persistence.orm.TableGenerator
org.apache.openejb.jee.jpa.TableGenerator
3.org/2001/XMLSchema}anyType"> <sequence> <element name="description" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/> <element name="unique-constraint" type="{http://java.sun.com/xml/ns/persistence/orm}unique-constraint" maxOccurs="unbounded" minOccurs="0"/> </sequence> <attribute name="name" use="required" type="{http://www.w3.org/2001/XMLSchema}string" /> <attribute name="table" type="{http://www.w3.org/2001/XMLSchema}string" /> <attribute name="catalog" type="{http://www.w3.org/2001/XMLSchema}string" /> <attribute name="schema" type="{http://www.w3.org/2001/XMLSchema}string" /> <attribute name="pk-column-name" type="{http://www.w3.org/2001/XMLSchema}string" /> <attribute name="value-column-name" type="{http://www.w3.org/2001/XMLSchema}string" /> <attribute name="pk-column-value" type="{http://www.w3.org/2001/XMLSchema}string" /> <attribute name="initial-value" type="{http://www.w3.org/2001/XMLSchema}int" /> <attribute name="allocation-size" type="{http://www.w3.org/2001/XMLSchema}int" /> </restriction> </complexContent> </complexType>

org.hibernate.id.enhanced.TableGenerator

An enhanced version of table-based id generation.

Unlike the simplistic legacy one (which, btw, was only ever intended for subclassing support) we "segment" the table into multiple values. Thus a single table can actually serve as the persistent storage for multiple independent generators. One approach would be to segment the values by the name of the entity for which we are performing generation, which would mean that we would have a row in the generator table for each entity name. Or any configuration really; the setup is very flexible.

In this respect it is very simliar to the legacy {@link org.hibernate.id.MultipleHiLoPerTableGenerator} in terms of theunderlying storage structure (namely a single table capable of holding multiple generator values). The differentiator is, as with {@link SequenceStyleGenerator} as well, the externalized notionof an optimizer.

NOTE that by default we use a single row for all genertators (based on {@link #DEF_SEGMENT_VALUE}). The configuration parameter {@link #CONFIG_PREFER_SEGMENT_PER_ENTITY} can be used to change that toinstead default to using a row for each entity name.

Configuration parameters:

NAME	DEFAULT	DESCRIPTION
{@link #TABLE_PARAM}	{@link #DEF_TABLE}	The name of the table to use to store/retrieve values
{@link #VALUE_COLUMN_PARAM}	{@link #DEF_VALUE_COLUMN}	The name of column which holds the sequence value for the given segment
{@link #SEGMENT_COLUMN_PARAM}	{@link #DEF_SEGMENT_COLUMN}	The name of the column which holds the segment key
{@link #SEGMENT_VALUE_PARAM}	{@link #DEF_SEGMENT_VALUE}	The value indicating which segment is used by this generator; refers to values in the {@link #SEGMENT_COLUMN_PARAM} column
{@link #SEGMENT_LENGTH_PARAM}	{@link #DEF_SEGMENT_LENGTH}	The data length of the {@link #SEGMENT_COLUMN_PARAM} column; used for schema creation
{@link #INITIAL_PARAM}	{@link #DEFAULT_INITIAL_VALUE}	The initial value to be stored for the given segment
{@link #INCREMENT_PARAM}	{@link #DEFAULT_INCREMENT_SIZE}	The increment size for the underlying segment; see the discussion on {@link Optimizer} for more details.
{@link #OPT_PARAM}	depends on defined increment size	Allows explicit definition of which optimization strategy to use

@author Steve Ebersole

Examples of javax.persistence.TableGenerator

    public long getNextSequence(long hostId) {
        if (s_logger.isTraceEnabled()) {
            s_logger.trace("getNextSequence(), hostId: " + hostId);
        }


        TableGenerator tg = _tgs.get("host_req_sq");
        assert tg != null : "how can this be wrong!";


        return s_seqFetcher.getNextSequence(Long.class, tg, hostId);
    }

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Examples of net.sourceforge.jpaxjc.ns.persistence.orm.TableGenerator

                    orm.getSequenceGenerator().add( e );
                    acknowledge = true;
                }
                else if ( c.element.getLocalName().equals( "table-generator" ) )
                {
                    final TableGenerator e = JAXB.unmarshal( new DOMSource( c.element ), TableGenerator.class );
                    orm.getTableGenerator().add( e );
                    acknowledge = true;
                }
                else if ( c.element.getLocalName().equals( "named-query" ) )
                {

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Examples of org.apache.openejb.jee.jpa.TableGenerator

        sequenceGeneratorProps.put("initialValue", sequenceGenerator.getInitialValue().intValue()); //$NON-NLS-1$
        sequenceGeneratorProps.put("allocationSize", sequenceGenerator.getAllocationSize().intValue()); //$NON-NLS-1$


        facade.addMethodAnnotation(entityBean.getEjbClass(), methodName, emptySignature, javax.persistence.SequenceGenerator.class, sequenceGeneratorProps);
      }
      TableGenerator tableGenerator = id.getTableGenerator();
      if (tableGenerator != null) {
        Map<String, Object> tableGeneratorProps = new HashMap<String, Object>();
        tableGeneratorProps.put("name", tableGenerator.getName()); //$NON-NLS-1$
        tableGeneratorProps.put("table", tableGenerator.getTable()); //$NON-NLS-1$
        tableGeneratorProps.put("catalog", tableGenerator.getCatalog()); //$NON-NLS-1$
        tableGeneratorProps.put("schema", tableGenerator.getSchema()); //$NON-NLS-1$
        tableGeneratorProps.put("pkColumnName", tableGenerator.getPkColumnName()); //$NON-NLS-1$
        tableGeneratorProps.put("valueColumnName", tableGenerator.getValueColumnName()); //$NON-NLS-1$
        tableGeneratorProps.put("pkColumnValue", tableGenerator.getPkColumnValue()); //$NON-NLS-1$
        tableGeneratorProps.put("initialValue", tableGenerator.getInitialValue().intValue()); //$NON-NLS-1$
        tableGeneratorProps.put("allocationSize", tableGenerator.getAllocationSize().intValue()); //$NON-NLS-1$


        List uniqueConstraintPropsList = new ArrayList();


        List<UniqueConstraint> uniqueConstraints = tableGenerator.getUniqueConstraint();
        for (UniqueConstraint uniqueConstriant : uniqueConstraints) {
          Map<String, Object> uniqueConstraintProps = new HashMap<String, Object>();
          List<String> columns = uniqueConstriant.getColumnName();
          uniqueConstraintProps.put("columnNames", columns.toArray(new String[0])); //$NON-NLS-1$
          uniqueConstraintPropsList.add(uniqueConstraintProps);

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Examples of org.hibernate.id.enhanced.TableGenerator


  public void testMinimalTableEntity() {
    final EntityPersister persister = sfi().getEntityPersister( MinimalTableEntity.class.getName() );
    IdentifierGenerator generator = persister.getIdentifierGenerator();
    assertTrue( TableGenerator.class.isInstance( generator ) );
    TableGenerator tabGenerator = (TableGenerator) generator;
    assertEquals( MinimalTableEntity.TBL_NAME, tabGenerator.getTableName() );
    assertEquals( TableGenerator.DEF_SEGMENT_COLUMN, tabGenerator.getSegmentColumnName() );
    assertEquals( "MINIMAL_TBL", tabGenerator.getSegmentValue() );
    assertEquals( TableGenerator.DEF_VALUE_COLUMN, tabGenerator.getValueColumnName() );
    // 0 is the annotation default, but its expected to be treated as 1
    assertEquals( 1, tabGenerator.getInitialValue() );
    // 50 is the annotation default
    assertEquals( 50, tabGenerator.getIncrementSize() );
    assertTrue( OptimizerFactory.PooledOptimizer.class.isInstance( tabGenerator.getOptimizer() ) );
  }

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