Interface ModelAwareDataAwareAmetysObject
- All Superinterfaces:
AmetysObject,DataAwareAmetysObject,DataHolder,ModelAwareDataHolder
- All Known Subinterfaces:
CalendarResource,CommentableContent,Content,ModelAwareDataAwareAmetysObject,ModelAwareJCRAmetysObject,ModelAwareJCRAmetysObject,ModifiableCalendar,ModifiableCalendarEvent,ModifiableContent,ModifiableModelAwareDataAwareAmetysObject,ModifiableModelAwareDataAwareAmetysObject,ModifiableWebContent,ModifiableWorkflowAwareContent,ProgramPart,SharedContent,Task,TasksList,TraversableProgramPart,WebContent,WorkflowAwareContent
- All Known Implementing Classes:
AbstractProgram,AbstractProgramPart,AbstractTraversableProgramPart,Cart,Catalog,Container,ContentBackupAmetysObject,ContentConsistencyResult,Course,CourseList,CoursePart,DefaultContent,DefaultSharedContent,DefaultWebContent,DefaultWorkflowAwareContent,Form,FormEntry,FormPageRule,FormQuestion,JCRCalendar,JCRCalendarEvent,JCRCalendarResource,JCRTask,JCRTasksList,ModifiableDefaultContent,ModifiableDefaultWebContent,OrgUnit,Person,Program,Query,Site,SubProgram
public interface ModelAwareDataAwareAmetysObject
extends DataAwareAmetysObject, ModelAwareDataHolder
Model aware
AmetysObject that can handle data.-
Field Summary
Fields inherited from interface org.ametys.plugins.repository.data.holder.ModelAwareDataHolder
ALTERNATIVE_SUFFIX, COMMENTS_SUFFIX, STATUS_SUFFIX -
Method Summary
Modifier and TypeMethodDescriptiondataToJSON(ViewItemAccessor viewItemAccessor, DataContext context) Convert the data in the given view of the currentDataHolderdataToJSONForEdition(ViewItemAccessor viewItemAccessor, DataContext context) Convert the data in the given view in edition mode in the currentDataHolderdataToMap(ViewItemAccessor viewItemAccessor, DataContext context) Retrieves data of this DataHolder as a typed-values Map.default voiddataToSAX(ContentHandler contentHandler, ViewItemAccessor viewItemAccessor, DataContext context) Generates SAX events for the data in the given view in the currentDataHolderdefault voiddataToSAXForEdition(ContentHandler contentHandler, ViewItemAccessor viewItemAccessor, DataContext context) Generates SAX events for the data in the given view in edition mode in the currentDataHolderdefault List<DataComment>getComments(String dataName) Retrieve the comments of the data with the given namedefault ModelAwareCompositegetComposite(String compositePath) Retrieves the composite at the given pathReturns theDataHolderof thisAmetysObject.default Collection<String>Retrieves the names of data contained by this data holder Retrieves only the data at first level, does not check composite datadefault ModelItemgetDefinition(String path) Retrieves the definition of the data at the given pathdefault ModelAwareCompositegetExternalComposite(String compositePath) Retrieves the external composite at the given pathdefault ModelAwareRepeatergetExternalRepeater(String repeaterPath) Retrieves the external repeater at the given pathdefault <T> TgetExternalValue(String dataPath) Retrieves the external value of the data at the given pathdefault ModelAwareCompositegetLocalComposite(String compositePath) Retrieves the local composite at the given pathdefault ModelAwareRepeatergetLocalRepeater(String repeaterPath) Retrieves the local repeater at the given pathdefault <T> TgetLocalValue(String dataPath) Retrieves the local value of the data at the given pathdefault Collection<? extends Model>getModel()Retrieves the data holder's modeldefault Optional<? extends ModelAwareDataHolder>Retrieves the optional parent of the currentDataHolderThere can be no parent if the currentDataHolderis the rootdefault ModelAwareRepeatergetRepeater(String repeaterPath) Retrieves the repeater at the given pathdefault ModelAwareDataHolderRetrieves theDataHolderthat is the root of the current oneRetrieves the status of the externalizable data at the given path Warning: This method won't check that your data is externalizable.default <T> TRetrieves the value of the data at the given pathdefault <T> TRetrieves the value of the data at the given path, or the default value The returned value is one of those ones, in the order: The value of the data if exists and is not empty The default value from the model if useDefaultFromModel istrueand there is a default value defined by the model The given default valuedefault booleanhasComments(String dataName) Checks if there is are comments on the data with the given namedefault booleanhasDefinition(String path) Checks if there is a definition at the given pathdefault booleanhasExternalValue(String dataPath) Checks if there is a non empty external value for the data at the given pathdefault booleanhasExternalValueOrEmpty(String dataPath) Checks if there is an external value for the data at the given pathdefault booleanhasLocalValue(String dataPath) Checks if there is a non empty local value for the data at the given pathdefault booleanhasLocalValueOrEmpty(String dataPath) Checks if there is a local value for the data at the given pathdefault booleanChecks if there is a non empty value for the data at the given pathdefault booleanhasValueOrEmpty(String dataPath) Checks if there is a value, even empty, for the data at the given pathMethods inherited from interface org.ametys.plugins.repository.AmetysObject
equals, getId, getName, getParent, getParentPath, getPath, hashCodeMethods inherited from interface org.ametys.plugins.repository.data.ametysobject.DataAwareAmetysObject
copyTo, dataToJSON, dataToJSON, dataToSAX, dataToSAX, getRepositoryDataMethods inherited from interface org.ametys.plugins.repository.data.holder.ModelAwareDataHolder
commentsToSAX, dataToJSON, dataToJSON, dataToJSON, dataToMap, dataToMap, dataToMap, dataToSAX, dataToSAX, dataToSAX, getType, getValue, isMultiple
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Method Details
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getDataHolder
Description copied from interface:DataAwareAmetysObjectReturns theDataHolderof thisAmetysObject.- Specified by:
getDataHolderin interfaceDataAwareAmetysObject- Returns:
- the
DataHolderof thisAmetysObject
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getComposite
default ModelAwareComposite getComposite(String compositePath) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:DataHolderRetrieves the composite at the given path- Specified by:
getCompositein interfaceDataAwareAmetysObject- Specified by:
getCompositein interfaceDataHolder- Specified by:
getCompositein interfaceModelAwareDataHolder- Parameters:
compositePath- path of the composite to retrieve- Returns:
- the composite or
nullif not exists or is empty - Throws:
IllegalArgumentException- if the given composite path is null or emptyUndefinedItemPathException- if the given composite path is not defined by the modelBadItemTypeException- if the stored value at the given path is not a compositeBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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getLocalComposite
default ModelAwareComposite getLocalComposite(String compositePath) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the local composite at the given path- Specified by:
getLocalCompositein interfaceModelAwareDataHolder- Parameters:
compositePath- path of the externalizable composite to retrieve- Returns:
- the composite or
nullif not exists or is empty - Throws:
IllegalArgumentException- if the given composite path is null or emptyUndefinedItemPathException- if the given composite path is not defined by the modelBadItemTypeException- if the stored value at the given path is not a compositeBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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getExternalComposite
default ModelAwareComposite getExternalComposite(String compositePath) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the external composite at the given path- Specified by:
getExternalCompositein interfaceModelAwareDataHolder- Parameters:
compositePath- path of the externalizable composite to retrieve- Returns:
- the composite or
nullif not exists or is empty - Throws:
IllegalArgumentException- if the given composite path is null or emptyUndefinedItemPathException- if the given composite path is not defined by the modelBadItemTypeException- if the stored value at the given path is not a compositeBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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getRepeater
default ModelAwareRepeater getRepeater(String repeaterPath) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the repeater at the given path- Specified by:
getRepeaterin interfaceModelAwareDataHolder- Parameters:
repeaterPath- path of the repeater to retrieve- Returns:
- the repeater or
nullif not exists or is empty - Throws:
IllegalArgumentException- if the given repeater path is null or emptyUndefinedItemPathException- if the given repeater path is not defined by the modelBadItemTypeException- if the stored value at the given path is not a repeaterBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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getLocalRepeater
default ModelAwareRepeater getLocalRepeater(String repeaterPath) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the local repeater at the given path- Specified by:
getLocalRepeaterin interfaceModelAwareDataHolder- Parameters:
repeaterPath- path of the externalizable repeater to retrieve- Returns:
- the repeater or
nullif not exists or is empty - Throws:
IllegalArgumentException- if the given repeater path is null or emptyUndefinedItemPathException- if the given repeater path is not defined by the modelBadItemTypeException- if the stored value at the given path is not a repeaterBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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getExternalRepeater
default ModelAwareRepeater getExternalRepeater(String repeaterPath) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the external repeater at the given path- Specified by:
getExternalRepeaterin interfaceModelAwareDataHolder- Parameters:
repeaterPath- path of the externalizable repeater to retrieve- Returns:
- the repeater or
nullif not exists or is empty - Throws:
IllegalArgumentException- if the given repeater path is null or emptyUndefinedItemPathException- if the given repeater path is not defined by the modelBadItemTypeException- if the stored value at the given path is not a repeaterBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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hasValue
default boolean hasValue(String dataPath) throws IllegalArgumentException, BadDataPathCardinalityException Description copied from interface:DataHolderChecks if there is a non empty value for the data at the given path- Specified by:
hasValuein interfaceDataAwareAmetysObject- Specified by:
hasValuein interfaceDataHolder- Specified by:
hasValuein interfaceModelAwareDataHolder- Parameters:
dataPath- path of the data- Returns:
trueif there is a non empty value for the data,falseotherwise- Throws:
IllegalArgumentException- if the given data path is null or emptyBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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hasLocalValue
default boolean hasLocalValue(String dataPath) throws IllegalArgumentException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderChecks if there is a non empty local value for the data at the given path- Specified by:
hasLocalValuein interfaceModelAwareDataHolder- Parameters:
dataPath- path of the externalizable data- Returns:
trueif the data at the given path is defined by the model, if there is a non empty local value for the data and if the type of this value matches the type of the definition.falseotherwise- Throws:
IllegalArgumentException- if the given data path is null or emptyBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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hasExternalValue
default boolean hasExternalValue(String dataPath) throws IllegalArgumentException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderChecks if there is a non empty external value for the data at the given path- Specified by:
hasExternalValuein interfaceModelAwareDataHolder- Parameters:
dataPath- path of the externalizable data- Returns:
trueif the data at the given path is defined by the model, if there is a non empty external value for the data and if the type of this value matches the type of the definition.falseotherwise- Throws:
IllegalArgumentException- if the given data path is null or emptyBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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hasValueOrEmpty
default boolean hasValueOrEmpty(String dataPath) throws IllegalArgumentException, BadDataPathCardinalityException Description copied from interface:DataHolderChecks if there is a value, even empty, for the data at the given path- Specified by:
hasValueOrEmptyin interfaceDataAwareAmetysObject- Specified by:
hasValueOrEmptyin interfaceDataHolder- Specified by:
hasValueOrEmptyin interfaceModelAwareDataHolder- Parameters:
dataPath- path of the data- Returns:
trueif there is value, even empty, for the data,falseotherwise- Throws:
IllegalArgumentException- if the given data path is null or emptyBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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hasLocalValueOrEmpty
default boolean hasLocalValueOrEmpty(String dataPath) throws IllegalArgumentException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderChecks if there is a local value for the data at the given path- Specified by:
hasLocalValueOrEmptyin interfaceModelAwareDataHolder- Parameters:
dataPath- path of the externalizable data- Returns:
trueif the data at the given path is defined by the model, if there is a local value for the data, even empty, and if the type of this value matches the type of the definition.falseotherwise- Throws:
IllegalArgumentException- if the given data path is null or emptyBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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hasExternalValueOrEmpty
default boolean hasExternalValueOrEmpty(String dataPath) throws IllegalArgumentException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderChecks if there is an external value for the data at the given path- Specified by:
hasExternalValueOrEmptyin interfaceModelAwareDataHolder- Parameters:
dataPath- path of the externalizable data- Returns:
trueif the data at the given path is defined by the model, if there is an external value for the data, even empty, and if the type of this value matches the type of the definition.falseotherwise- Throws:
IllegalArgumentException- if the given data path is null or emptyBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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hasComments
default boolean hasComments(String dataName) throws IllegalArgumentException, UndefinedItemPathException Description copied from interface:ModelAwareDataHolderChecks if there is are comments on the data with the given name- Specified by:
hasCommentsin interfaceModelAwareDataHolder- Parameters:
dataName- name of the data- Returns:
trueif there are comments on the data,falseotherwise- Throws:
IllegalArgumentException- if the given data name is null or emptyUndefinedItemPathException- if the given data name is not defined by the model
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getValue
default <T> T getValue(String dataPath, boolean allowMultiValuedPathSegments) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the value of the data at the given path- Specified by:
getValuein interfaceModelAwareDataHolder- Type Parameters:
T- type of the value to retrieve- Parameters:
dataPath- path of the dataallowMultiValuedPathSegments-trueto allow multi-valued segments in the path (not necessarily at the last segment),falseotherwise. Iftrue, if there is no indicated entry for a repeater, the values of all the entries are retrieved Iftrueand if there are multiple values, all data are retrieved in one array- Returns:
- the value of the data or
nullif allowMultiValuedPathSegments isfalseand there is no non empty value. The object returned may be of a generic class defined by the storage (if the model is unknown). For example, an url may be returned as a String. - Throws:
IllegalArgumentException- if the given data path is null or emptyUndefinedItemPathException- if the given data path is not defined by the modelBadItemTypeException- if the type defined by the model doesn't match the type of the stored valueBadDataPathCardinalityException- if the managesMultiples boolean isfalseand the definition of a part of the data path is multiple. Only the last part can be multiple
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getValue
default <T> T getValue(String dataPath, boolean useDefaultFromModel, T defaultValue) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the value of the data at the given path, or the default value The returned value is one of those ones, in the order:- The value of the data if exists and is not empty
- The default value from the model if useDefaultFromModel is
trueand there is a default value defined by the model - The given default value
- Specified by:
getValuein interfaceModelAwareDataHolder- Type Parameters:
T- type of the value to retrieve- Parameters:
dataPath- path of the datauseDefaultFromModel- true to use the default value from the model, false to use the given default valuedefaultValue- default value used if value is null and useDefaultFromModel is false, or if there is no default value on model- Returns:
- the value of the data at the given path
- Throws:
IllegalArgumentException- if the given data path is null or emptyUndefinedItemPathException- if the given data path is not defined by the modelBadItemTypeException- if the type defined by the model doesn't match the type of the stored valueBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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getLocalValue
default <T> T getLocalValue(String dataPath) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the local value of the data at the given path- Specified by:
getLocalValuein interfaceModelAwareDataHolder- Type Parameters:
T- type of the value to retrieve- Parameters:
dataPath- path of the externalizable data- Returns:
- the local value of the data or
nullif not exists or is empty. The object returned may be of a generic class defined by the storage (if the model is unknown). For example, an url may be returned as a String. - Throws:
IllegalArgumentException- if the given data path is null or emptyUndefinedItemPathException- if the given data path is not defined by the modelBadItemTypeException- if the type defined by the model doesn't match the type of the stored valueBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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getExternalValue
default <T> T getExternalValue(String dataPath) throws IllegalArgumentException, UndefinedItemPathException, BadItemTypeException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the external value of the data at the given path- Specified by:
getExternalValuein interfaceModelAwareDataHolder- Type Parameters:
T- type of the value to retrieve- Parameters:
dataPath- path of the externalizable data- Returns:
- the external value of the data or
nullif not exists or is empty. The object returned may be of a generic class defined by the storage (if the model is unknown). For example, an url may be returned as a String. - Throws:
IllegalArgumentException- if the given data path is null or emptyUndefinedItemPathException- if the given data path is not defined by the modelBadItemTypeException- if the type defined by the model doesn't match the type of the stored valueBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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getStatus
default ExternalizableDataProvider.ExternalizableDataStatus getStatus(String dataPath) throws IllegalArgumentException, UndefinedItemPathException, BadDataPathCardinalityException Description copied from interface:ModelAwareDataHolderRetrieves the status of the externalizable data at the given path Warning: This method won't check that your data is externalizable. But there is no sense to call it with a non externalizable data- Specified by:
getStatusin interfaceModelAwareDataHolder- Parameters:
dataPath- path of the externalizable data- Returns:
- the status of the externalizable data at the given path
- Throws:
IllegalArgumentException- if the given data path is null or emptyUndefinedItemPathException- if the given data path is not defined by the modelBadDataPathCardinalityException- if the definition of a part of the data path is multiple. Only the last part can be multiple
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getComments
default List<DataComment> getComments(String dataName) throws IllegalArgumentException, UndefinedItemPathException Description copied from interface:ModelAwareDataHolderRetrieve the comments of the data with the given name- Specified by:
getCommentsin interfaceModelAwareDataHolder- Parameters:
dataName- name of the data- Returns:
- the comments of the data
- Throws:
IllegalArgumentException- if the given data name is null or emptyUndefinedItemPathException- if the given data name is not defined by the model
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getModel
Description copied from interface:ModelAwareDataHolderRetrieves the data holder's model- Specified by:
getModelin interfaceModelAwareDataHolder- Returns:
- the data holder's model
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getDefinition
default ModelItem getDefinition(String path) throws IllegalArgumentException, UndefinedItemPathException Description copied from interface:ModelAwareDataHolderRetrieves the definition of the data at the given path- Specified by:
getDefinitionin interfaceModelAwareDataHolder- Parameters:
path- path of the data. No matter if it is a definition or data path (with repeater entry positions)- Returns:
- the definition of the data
- Throws:
IllegalArgumentException- if the given path is null or emptyUndefinedItemPathException- if the given path is not defined by the model
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hasDefinition
Description copied from interface:ModelAwareDataHolderChecks if there is a definition at the given path- Specified by:
hasDefinitionin interfaceModelAwareDataHolder- Parameters:
path- path of the data. No matter if it is a definition or data path (with repeater entry positions)- Returns:
trueif there is definition at the given path,falseotherwise- Throws:
IllegalArgumentException- if the given path is null or empty
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getDataNames
Description copied from interface:DataHolderRetrieves the names of data contained by this data holder Retrieves only the data at first level, does not check composite data- Specified by:
getDataNamesin interfaceDataAwareAmetysObject- Specified by:
getDataNamesin interfaceDataHolder- Specified by:
getDataNamesin interfaceModelAwareDataHolder- Returns:
- the names of all data contained by this data holder
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dataToSAX
default void dataToSAX(ContentHandler contentHandler, ViewItemAccessor viewItemAccessor, DataContext context) throws SAXException, BadItemTypeException Description copied from interface:ModelAwareDataHolderGenerates SAX events for the data in the given view in the currentDataHolder- Specified by:
dataToSAXin interfaceModelAwareDataHolder- Parameters:
contentHandler- theContentHandlerthat will receive the SAX eventsviewItemAccessor- theViewItemAccessorreferencing the items for which generate SAX eventscontext- The context of the data to SAX- Throws:
SAXException- if an error occurs during the SAX events generationBadItemTypeException- if the saxed value's type does not matches the stored data
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dataToSAXForEdition
default void dataToSAXForEdition(ContentHandler contentHandler, ViewItemAccessor viewItemAccessor, DataContext context) throws SAXException, BadItemTypeException Description copied from interface:ModelAwareDataHolderGenerates SAX events for the data in the given view in edition mode in the currentDataHolder- Specified by:
dataToSAXForEditionin interfaceModelAwareDataHolder- Parameters:
contentHandler- theContentHandlerthat will receive the SAX eventsviewItemAccessor- theViewItemAccessorreferencing the items for which generate SAX eventscontext- The context of the data to SAX- Throws:
SAXException- if an error occurs during the SAX events generationBadItemTypeException- if the saxed value's type does not matches the stored data
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dataToJSON
default Map<String,Object> dataToJSON(ViewItemAccessor viewItemAccessor, DataContext context) throws BadItemTypeException Description copied from interface:ModelAwareDataHolderConvert the data in the given view of the currentDataHolder- Specified by:
dataToJSONin interfaceModelAwareDataHolder- Parameters:
viewItemAccessor- theViewItemAccessorreferencing the items to convertcontext- The context of the data to convert- Returns:
- The data of the given view as JSON
- Throws:
BadItemTypeException- if the value's type does not matches the stored data
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dataToJSONForEdition
default Map<String,Object> dataToJSONForEdition(ViewItemAccessor viewItemAccessor, DataContext context) throws BadItemTypeException Description copied from interface:ModelAwareDataHolderConvert the data in the given view in edition mode in the currentDataHolder- Specified by:
dataToJSONForEditionin interfaceModelAwareDataHolder- Parameters:
viewItemAccessor- theViewItemAccessorreferencing the items to convertcontext- The context of the data to convert- Returns:
- The data of the given view as JSON
- Throws:
BadItemTypeException- if the value's type does not matches the stored data
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dataToMap
Description copied from interface:ModelAwareDataHolderRetrieves data of this DataHolder as a typed-values Map.- Specified by:
dataToMapin interfaceModelAwareDataHolder- Parameters:
viewItemAccessor- theViewItemAccessorreferencing the items to include in the resulting Mapcontext- The context of the data- Returns:
- a Map containing all data.
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getParentDataHolder
Description copied from interface:DataHolderRetrieves the optional parent of the currentDataHolderThere can be no parent if the currentDataHolderis the root- Specified by:
getParentDataHolderin interfaceDataAwareAmetysObject- Specified by:
getParentDataHolderin interfaceDataHolder- Specified by:
getParentDataHolderin interfaceModelAwareDataHolder- Returns:
- the parent of the current
DataHolder
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getRootDataHolder
Description copied from interface:DataHolderRetrieves theDataHolderthat is the root of the current one- Specified by:
getRootDataHolderin interfaceDataAwareAmetysObject- Specified by:
getRootDataHolderin interfaceDataHolder- Specified by:
getRootDataHolderin interfaceModelAwareDataHolder- Returns:
- the root
DataHolder
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