com.atlassian.jira.issue.customfields
Interface CustomFieldType<T,S>

Type Parameters:
T - Transport Object For a single Transport Objects this will be the same as S. Otherwise, the transport Object currently supports Collection&lt;S>, Map&lt;String,S> or Map&lt;String, Collection&lt;S>>. N.B. Support for CustomFieldParams as the Transport Object has been deprecated since 5.0.
S - Singular Form of the Transport object T.
All Known Subinterfaces:
MultipleCustomFieldType<T,S>, MultipleSettableCustomFieldType<T,S>
All Known Implementing Classes:
AbstractCustomFieldType, AbstractMultiCFType, AbstractMultiSettableCFType, AbstractSingleFieldType, CalculatedCFType, CascadingSelectCFType, DateCFType, DateTimeCFType, GenericTextCFType, ImportIdLinkCFType, LabelsCFType, MultiGroupCFType, MultiSelectCFType, MultiUserCFType, NumberCFType, ProjectCFType, ReadOnlyCFType, RenderableTextCFType, SelectCFType, StringCFType, TextAreaCFType, TextCFType, URLCFType, UserCFType, VersionCFType

@PublicApi
@PublicSpi
public interface CustomFieldType<T,S>

This interface represents a particular type of CustomField. It encapsulates all logic dealing with values of a Custom Field, such as creation, update and removal of values, storage & retrieval of defaults and validation of values.

A value instance of a custom field is represented as an Object, from hereon in referred to as a Transport Object. These may be of singular types (eg. Number, String) or Multi-Dimensional (eg. Collection of Strings, Map of Date Objects, CustomFieldParams of Option). Most methods in the interface expect/returns Transfer Objects (e.g. Persistence Methods (createValue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue, T), updateValue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue, T)) and Transfer Object Getters getValueFromIssue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue) and getValueFromCustomFieldParams(com.atlassian.jira.issue.customfields.view.CustomFieldParams).

However, two special conversion methods (getSingularObjectFromString(java.lang.String) & getStringFromSingularObject(S)) act on the Singular Object level. Thus, even when the Transfer Object type is a Collection of Number, getSingularObjectFromString would still return a single Number object.

Implementing classes should clearly document the exact structure of the Transport Object in the Class javadoc header. If the Transport Object is Multi-Dimensional, the type of the Singular Object should also be specified. This is especially relevant for complex custom field types (CascadingSelectCFType for example)

Since:
JIRA 3.0
See Also:
CustomField, CustomFieldParams

Field Summary
static String DEFAULT_VALUE_TYPE
           
 
Method Summary
 String availableForBulkEdit(BulkEditBean bulkEditBean)
          Allow the custom field type perform a specific check as to its availability for bulk editing.
 void createValue(CustomField field, Issue issue, T value)
          Save the value for this Custom Field in a particular issue to the database.
 String getChangelogString(CustomField field, T value)
          Returns a String of representing values to be stored in the change log, an example is the name of a version field that a version id will resolve to within JIRA.
 String getChangelogValue(CustomField field, T value)
          Returns a values to be stored in the change log, example is the id of the changed item.
 List<FieldConfigItemType> getConfigurationItemTypes()
          Returns a List of FieldConfigItemType objects.
 T getDefaultValue(FieldConfig fieldConfig)
          Retrieves the Object representing the default CustomField value for the Custom Field.
 String getDescription()
           
 CustomFieldTypeModuleDescriptor getDescriptor()
           
 String getKey()
          Returns the full key of the CustomFieldType.
 String getName()
           
 List<FieldIndexer> getRelatedIndexers(CustomField customField)
          Returns a list of indexers that will be used for the field.
 S getSingularObjectFromString(String string)
          Returns a Singular Object, given the string value as passed by the presentation tier.
 String getStringFromSingularObject(S singularObject)
          Returns the String representation of a single value within the CustomFieldType.
 Object getStringValueFromCustomFieldParams(CustomFieldParams parameters)
          Return the String value object from the CustomFieldParams.
 T getValueFromCustomFieldParams(CustomFieldParams parameters)
          Retrieves the Transport Object representing the CustomField value instance from the CustomFieldParams of Strings.
 T getValueFromIssue(CustomField field, Issue issue)
          Retrieves the Transport Object representing the current CustomField value for the given issue.
 Map<String,Object> getVelocityParameters(Issue issue, CustomField field, FieldLayoutItem fieldLayoutItem)
          The custom field may wish to pass parameters to the velocity context beyond the getValueFromIssue methods (eg managers).
 void init(CustomFieldTypeModuleDescriptor customFieldTypeModuleDescriptor)
          Initialises the CustomFieldType with the given descriptor.
 boolean isRenderable()
          This is a mirror of the method from the RenderableField interface and is needed to bridge the gap between CustomFields and CustomFieldTypes.
 Set<Long> remove(CustomField field)
          Performs additional tasks when an entire CustomField of this type is being removed CustomField.remove().
 void setDefaultValue(FieldConfig fieldConfig, T value)
          Sets the default value for a Custom Field
 void updateValue(CustomField field, Issue issue, T value)
          Upadte the value for this Custom Field in a particular issue currently stored in the database.
 void validateFromParams(CustomFieldParams relevantParams, ErrorCollection errorCollectionToAddTo, FieldConfig config)
          Ensures that the CustomFieldParams of Strings is a valid representation of the Custom Field values.
 boolean valuesEqual(T v1, T v2)
          Used to compare 2 field values and work out whether a change item should be generated
 

Field Detail

DEFAULT_VALUE_TYPE

static final String DEFAULT_VALUE_TYPE
See Also:
Constant Field Values
Method Detail

init

void init(CustomFieldTypeModuleDescriptor customFieldTypeModuleDescriptor)
Initialises the CustomFieldType with the given descriptor.

Parameters:
customFieldTypeModuleDescriptor - CustomFieldTypeModuleDescriptor

getKey

String getKey()
Returns the full key of the CustomFieldType. Typically, this will be prefixed with "com.atlassian.jira.plugin.system.customfieldtypes:"

Returns:
CustomFieldType Key prefixed with the Package

getName

String getName()

getDescription

String getDescription()

getDescriptor

CustomFieldTypeModuleDescriptor getDescriptor()

getStringFromSingularObject

String getStringFromSingularObject(S singularObject)
Returns the String representation of a single value within the CustomFieldType. This is the value that is passed to the presentation tier for editing. For single CustomFieldTypes the Singular Object is the same as a Transport Object. However, for multi-dimensional CustomFieldTypes, the Singular Object is the Object contained within the Collection or Map

Parameters:
singularObject - the object
Returns:
String representation of the Object

getSingularObjectFromString

S getSingularObjectFromString(String string)
                              throws FieldValidationException
Returns a Singular Object, given the string value as passed by the presentation tier. Throws FieldValidationException if the string is an invalid representation of the Object.

Parameters:
string - the String
Returns:
singularObject instance
Throws:
FieldValidationException - if the string is an invalid representation of the Object.

remove

Set<Long> remove(CustomField field)
Performs additional tasks when an entire CustomField of this type is being removed CustomField.remove(). This includes removal of values & options.

Parameters:
field - The custom field that is being removed, so any data stored for any issues for that field can be deleted.
Returns:
Set of issue ids that has been affected

validateFromParams

void validateFromParams(CustomFieldParams relevantParams,
                        ErrorCollection errorCollectionToAddTo,
                        FieldConfig config)
Ensures that the CustomFieldParams of Strings is a valid representation of the Custom Field values. Any errors should be added to the ErrorCollection under the appropriate key as required.

Parameters:
relevantParams - parameter object of Strings
errorCollectionToAddTo - errorCollection to which any erros should be added (never null)
config - FieldConfig

createValue

void createValue(CustomField field,
                 Issue issue,
                 T value)
Save the value for this Custom Field in a particular issue to the database.

Parameters:
field - CustomField for which the value is being stored
issue - The Issue to be stored against.
value - Transport Object representing the value instance of the CustomField.

updateValue

void updateValue(CustomField field,
                 Issue issue,
                 T value)
Upadte the value for this Custom Field in a particular issue currently stored in the database.

Parameters:
field - CustomField for which the value is being stored
issue - The Issue to be stored against.
value - Transport Object representing the value instance of the CustomField.

getValueFromCustomFieldParams

T getValueFromCustomFieldParams(CustomFieldParams parameters)
                                throws FieldValidationException
Retrieves the Transport Object representing the CustomField value instance from the CustomFieldParams of Strings.

Parameters:
parameters - CustomFieldParams of String objects. Will contain one value for Singular field types.
Returns:
Transport Object matching the Object parameter of createValue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue, T), updateValue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue, T)
Throws:
FieldValidationException - if the String value fails to convert into Objects
See Also:
createValue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue, Object), updateValue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue, Object), getValueFromIssue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue)

getStringValueFromCustomFieldParams

Object getStringValueFromCustomFieldParams(CustomFieldParams parameters)
Return the String value object from the CustomFieldParams. The object may be a single String (e.g. TextCFType, List of Strings (e.g. MultiSelectCFType) or CustomFieldParams of Strings (e.g. CascadingSelectCFType). Among other things these values are passed to Velocity for rendering edit screens.

Parameters:
parameters - - CustomFieldParams containing String values
Returns:
String value object from the CustomFieldParams

getValueFromIssue

@Nullable
T getValueFromIssue(CustomField field,
                             Issue issue)
Retrieves the Transport Object representing the current CustomField value for the given issue.

Parameters:
field - Custom field for which to retrieve the value
issue - Issue from which to retrieve the value
Returns:
Transport Object matching the Object parameter of createValue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue, T), updateValue(com.atlassian.jira.issue.fields.CustomField, com.atlassian.jira.issue.Issue, T)

getDefaultValue

T getDefaultValue(FieldConfig fieldConfig)
Retrieves the Object representing the default CustomField value for the Custom Field.

Parameters:
fieldConfig - CustomField for default value
Returns:
Transport Object of the Default Value

setDefaultValue

void setDefaultValue(FieldConfig fieldConfig,
                     T value)
Sets the default value for a Custom Field

Parameters:
fieldConfig - CustomField for which the default is being stored
value - Transport Object representing the value instance of the CustomField

getChangelogValue

@Nullable
String getChangelogValue(CustomField field,
                                  T value)
Returns a values to be stored in the change log, example is the id of the changed item.

Parameters:
field - CustomField that the value belongs to
value - Transport Object representing the value instance of the CustomField
Returns:
Change log value.
Since:
3.1 Implementions can return null. This should only occur when no change log is desired

getChangelogString

@Nullable
String getChangelogString(CustomField field,
                                   T value)
Returns a String of representing values to be stored in the change log, an example is the name of a version field that a version id will resolve to within JIRA.

Parameters:
field - CustomField that the value belongs to
value - Transport Object representing the value instance of the CustomField
Returns:
Change log string.
Since:
3.4 Implementions can return null. This should only occur when no change log is desired or when the value returned from the getChangelogValue method is an acurate representation of the data's value.

getVelocityParameters

@NotNull
Map<String,Object> getVelocityParameters(Issue issue,
                                                 CustomField field,
                                                 FieldLayoutItem fieldLayoutItem)
The custom field may wish to pass parameters to the velocity context beyond the getValueFromIssue methods (eg managers).

The values are added to the context for all velocity views (edit, search, view, xml)

Parameters:
issue - The issue currently in context (Note: this will be null in cases like 'default value')
field - CustomField
fieldLayoutItem - FieldLayoutItem
Returns:
A Map of parameters to add to the velocity context, or an empty Map otherwise (never null)

getConfigurationItemTypes

@NotNull
List<FieldConfigItemType> getConfigurationItemTypes()
Returns a List of FieldConfigItemType objects. Can not be immutable. This opens up possibilties for configurable custom fields.

Returns:
List of FieldConfigItemType

getRelatedIndexers

@Nullable
List<FieldIndexer> getRelatedIndexers(CustomField customField)
Returns a list of indexers that will be used for the field.

Parameters:
customField - the custom field to get the related indexers of.
Returns:
List of instantiated and initialised FieldIndexer objects. Null if no related indexers.

isRenderable

boolean isRenderable()
This is a mirror of the method from the RenderableField interface and is needed to bridge the gap between CustomFields and CustomFieldTypes.

Returns:
true if the field is configurable for use with the renderers, a text based field, false otherwise.

valuesEqual

boolean valuesEqual(T v1,
                    T v2)
Used to compare 2 field values and work out whether a change item should be generated

Parameters:
v1 - current value
v2 - new value
Returns:
true if the change item should be generated, false otherwise

availableForBulkEdit

@Nullable
String availableForBulkEdit(BulkEditBean bulkEditBean)
Allow the custom field type perform a specific check as to its availability for bulk editing.

Parameters:
bulkEditBean - BulkEditBean
Returns:
null if available for bulk edit or appropriate unavailable message


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