All Superinterfaces:

BeforeExecutionGenerator, Generator, OnExecutionGenerator, Serializable

All Known Subinterfaces:

AnnotationValueGeneration<A>

All Known Implementing Classes:

CreationTimestampGeneration, UpdateTimestampGeneration
```
@Deprecated(since="6.2",
            forRemoval=true)
public interface ValueGeneration
extends BeforeExecutionGenerator, OnExecutionGenerator
```
Deprecated, for removal: This API element is subject to removal in a future version.
Replaced by Generator

A value generator that can adapt to both Java value generation and database value generation.
This is an older API that predates Generator. It's often cleaner to implement either BeforeExecutionGenerator or OnExecutionGenerator directly.

See Also:

AnnotationValueGeneration

Method Summary

All Methods Instance Methods Abstract Methods Default Methods Deprecated Methods
Modifier and Type	Method	Description
`default Object`	`generate(SharedSessionContractImplementor session, Object owner, Object currentValue, EventType eventType)`	Deprecated, for removal: This API element is subject to removal in a future version. Generate a value.
`default boolean`	`generatedOnExecution()`	Deprecated, for removal: This API element is subject to removal in a future version. Determines if the property value is generated in Java, or by the database.
`String`	`getDatabaseGeneratedReferencedColumnValue()`	Deprecated, for removal: This API element is subject to removal in a future version. A SQL expression indicating how to calculate the generated value when the property value is generated in the database and the mapped column is included in the SQL statement.
`default String`	`getDatabaseGeneratedReferencedColumnValue(Dialect dialect)`	Deprecated, for removal: This API element is subject to removal in a future version. A SQL expression indicating how to calculate the generated value when the property value is generated in the database and the mapped column is included in the SQL statement.
`default EnumSet<EventType>`	`getEventTypes()`	Deprecated, for removal: This API element is subject to removal in a future version. The event types for which this generator should be called to produce a new value.
`GenerationTiming`	`getGenerationTiming()`	Deprecated, for removal: This API element is subject to removal in a future version. Specifies that the property value is generated: when the entity is inserted, when the entity is updated, whenever the entity is inserted or updated, or never.
`default String[]`	`getReferencedColumnValues(Dialect dialect)`	Deprecated, for removal: This API element is subject to removal in a future version. A SQL expression indicating how to calculate the generated values when the mapped columns are included in the SQL statement.
`ValueGenerator<?>`	`getValueGenerator()`	Deprecated, for removal: This API element is subject to removal in a future version. Obtain the Java value generator, if the value is generated in Java, or return `null` if the value is generated by the database.
`boolean`	`referenceColumnInSql()`	Deprecated, for removal: This API element is subject to removal in a future version. Determines if the column whose value is generated is included in the column list of the SQL `insert` or `update` statement, in the case where the value is generated by the database.
`default boolean`	`referenceColumnsInSql(Dialect dialect)`	Deprecated, for removal: This API element is subject to removal in a future version. Determines if the columns whose values are generated are included in the column list of the SQL `insert` or `update` statement.
`default boolean`	`writePropertyValue()`	Deprecated, for removal: This API element is subject to removal in a future version. Determines if the property value is written to JDBC as the argument of a JDBC `?` parameter.

Methods inherited from interface org.hibernate.generator.Generator
allowAssignedIdentifiers, generatedOnExecution, generatesOnInsert, generatesOnUpdate, generatesSometimes

Methods inherited from interface org.hibernate.generator.OnExecutionGenerator
getGeneratedIdentifierDelegate, getUniqueKeyPropertyNames

- Method Detail
  - getGenerationTiming
```
GenerationTiming getGenerationTiming()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    Specifies that the property value is generated:
    
    when the entity is inserted,
    when the entity is updated,
    whenever the entity is inserted or updated, or
    never.
    Returns:
    
    The GenerationTiming specifying when the value is generated.
  - getEventTypes
```
default EnumSet<EventType> getEventTypes()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Description copied from interface: Generator
    
    The event types for which this generator should be called to produce a new value.
    Identifier generators must return EventTypeSets.INSERT_ONLY.
    
    Specified by:
    
    getEventTypes in interface Generator
    
    Returns:
    
    a set of EventTypes.
  - getValueGenerator
```
ValueGenerator<?> getValueGenerator()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Obtain the Java value generator, if the value is generated in Java, or return null if the value is generated by the database.
    
    Returns:
    
    The value generator
  - generate
```
default Object generate(SharedSessionContractImplementor session,
                        Object owner,
                        Object currentValue,
                        EventType eventType)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Description copied from interface: BeforeExecutionGenerator
    
    Generate a value.
    
    Specified by:
    
    generate in interface BeforeExecutionGenerator
    
    Parameters:
    
    session - The session from which the request originates.
    
    owner - The instance of the object owning the attribute for which we are generating a value.
    
    currentValue - The current value assigned to the property, or null
    
    eventType - The type of event that has triggered generation of a new value
    
    Returns:
    
    The generated value
  - referenceColumnInSql
```
boolean referenceColumnInSql()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    Determines if the column whose value is generated is included in the column list of the SQL insert or update statement, in the case where the value is generated by the database. For example, this method should return:
    
    true if the value is generated by calling a SQL function like current_timestamp, or
    false if the value is generated by a trigger, by generated always as, or using a column default value.
    
    If the value is generated in Java, this method is not called, and so for backward compatibility with Hibernate 5 it is permitted to return any value. On the other hand, when a property value is generated in Java, the column certainly must be included in the column list, and so it's most correct for this method to return true!
    Returns:
    
    true if the column is included in the column list of the SQL statement.
  - getDatabaseGeneratedReferencedColumnValue
```
String getDatabaseGeneratedReferencedColumnValue()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    A SQL expression indicating how to calculate the generated value when the property value is generated in the database and the mapped column is included in the SQL statement. The SQL expression might be:
    
    a function call like current_timestamp or nextval('mysequence'), or
    a syntactic marker like default.
    
    When the property value is generated in Java, this method is not called, and its value is implicitly the string "?", that is, a JDBC parameter to which the generated value is bound.
    Returns:
    
    The column value to be used in the generated SQL statement.
  - getDatabaseGeneratedReferencedColumnValue
```
default String getDatabaseGeneratedReferencedColumnValue(Dialect dialect)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    A SQL expression indicating how to calculate the generated value when the property value is generated in the database and the mapped column is included in the SQL statement. The SQL expression might be:
    
    a function call like current_timestamp or nextval('mysequence'), or
    a syntactic marker like default.
    
    When the property value is generated in Java, this method is not called, and its value is implicitly the string "?", that is, a JDBC parameter to which the generated value is bound.
    Parameters:
    
    dialect - The SQL dialect, allowing generation of an expression in dialect-specific SQL.
    
    Returns:
    
    The column value to be used in the generated SQL statement.
  - getReferencedColumnValues
```
default String[] getReferencedColumnValues(Dialect dialect)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Description copied from interface: OnExecutionGenerator
    A SQL expression indicating how to calculate the generated values when the mapped columns are included in the SQL statement. The SQL expressions might be:
    
    function calls like current_timestamp or nextval('mysequence'), or
    syntactic markers like default.
    Specified by:
    
    getReferencedColumnValues in interface OnExecutionGenerator
    
    Parameters:
    
    dialect - The SQL dialect, allowing generation of an expression in dialect-specific SQL.
    
    Returns:
    
    The column value to be used in the generated SQL statement.
  - referenceColumnsInSql
```
default boolean referenceColumnsInSql(Dialect dialect)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Description copied from interface: OnExecutionGenerator
    Determines if the columns whose values are generated are included in the column list of the SQL insert or update statement. For example, this method should return:
    
    true if the value is generated by calling a SQL function like current_timestamp, or
    false if the value is generated by a trigger, by generated always as, or using a column default value.
    Specified by:
    
    referenceColumnsInSql in interface OnExecutionGenerator
    
    Returns:
    
    true if the column is included in the column list of the SQL statement.
  - generatedOnExecution
```
default boolean generatedOnExecution()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Determines if the property value is generated in Java, or by the database.
    This default implementation returns true if the Java value generator is null.
    
    Specified by:
    
    generatedOnExecution in interface BeforeExecutionGenerator
    
    Specified by:
    
    generatedOnExecution in interface Generator
    
    Specified by:
    
    generatedOnExecution in interface OnExecutionGenerator
    
    Returns:
    
    true if the value is generated by the database, or false if it is generated in Java using a ValueGenerator.
  - writePropertyValue
```
default boolean writePropertyValue()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    Determines if the property value is written to JDBC as the argument of a JDBC ? parameter. This is the case when either:
    
    the value is generated in Java, or
    referenceColumnInSql() is true and getDatabaseGeneratedReferencedColumnValue() returns null.
    Specified by:
    
    writePropertyValue in interface OnExecutionGenerator
    
    See Also:
    
    Generated.writable()

Interface ValueGeneration

Method Summary

Methods inherited from interface org.hibernate.generator.Generator

Methods inherited from interface org.hibernate.generator.OnExecutionGenerator

Method Detail

getGenerationTiming

getEventTypes

getValueGenerator

generate

referenceColumnInSql

getDatabaseGeneratedReferencedColumnValue

getDatabaseGeneratedReferencedColumnValue

getReferencedColumnValues

referenceColumnsInSql

generatedOnExecution

writePropertyValue