AttributeDefinition (Information System Model 7.1.0-SNAPSHOT API)

All Superinterfaces:

Attribute

All Known Subinterfaces:

PropertyDefinition

All Known Implementing Classes:

PropertyDefinitionImpl
```
public interface AttributeDefinition
extends Attribute
```
Extends the Attribute interface to include properties that define its requirement constraints.
This interface adds flags to specify whether an attribute is mandatory and whether its value can be null.

Author:

Luca Frosini (ISTI - CNR)

See Also:

Attribute

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`MANDATORY_PROPERTY`	The property name for the 'mandatory' flag.
`static String`	`NOT_NULL_PROPERTY`	The property name for the 'notnull' flag.

Fields inherited from interface org.gcube.informationsystem.base.reference.Attribute
DEFAULT_VALUE_PROPERTY, DESCRIPTION_PROPERTY, MAX_PROPERTY, MIN_PROPERTY, NAME, NAME_PROPERTY, PROPERTY_TYPE_PROPERTY, REGEX_PROPERTY

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`isMandatory()`	Checks if the attribute is mandatory.
`boolean`	`isNotnull()`	Checks if the attribute's value cannot be null.
`void`	`setMandatory(boolean mandatory)`	Sets whether the attribute is mandatory.
`void`	`setNotnull(boolean notnull)`	Sets whether the attribute's value can be null.

Methods inherited from interface org.gcube.informationsystem.base.reference.Attribute
getDefaultValue, getDescription, getMax, getMin, getName, getPropertyType, getPropertyTypeName, getRegexp, setDefaultValue, setDescription, setMax, setMin, setName, setPropertyType, setRegexp

- Field Detail
  - MANDATORY_PROPERTY
```
static final String MANDATORY_PROPERTY
```
    The property name for the 'mandatory' flag.
    
    See Also:
    
    Constant Field Values
  - NOT_NULL_PROPERTY
```
static final String NOT_NULL_PROPERTY
```
    The property name for the 'notnull' flag.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - isMandatory
```
boolean isMandatory()
```
    Checks if the attribute is mandatory.
    
    Returns:
    
    true if the attribute is mandatory, false otherwise.
  - setMandatory
```
void setMandatory(boolean mandatory)
```
    Sets whether the attribute is mandatory.
    
    Parameters:
    
    mandatory - true to make the attribute mandatory, false otherwise.
  - isNotnull
```
boolean isNotnull()
```
    Checks if the attribute's value cannot be null.
    
    Returns:
    
    true if the attribute value must not be null, false otherwise.
  - setNotnull
```
void setNotnull(boolean notnull)
```
    Sets whether the attribute's value can be null.
    
    Parameters:
    
    notnull - true to enforce a non-null value, false otherwise.