org.bremersee.pagebuilder

Class PageBuilderUtils

java.lang.Object

org.bremersee.pagebuilder.PageBuilderUtils

public abstract class PageBuilderUtils
extends Object

Utility methods.

Author:

Christian Bremer

Method Summary

Modifier and Type	Method and Description
static <E> Page<E>	cast(Page<?> page) Casts a page.
static <E,T> PageResult<T>	createPage(Iterable<? extends E> entries, PageRequest pageRequest, long totalSize, PageEntryTransformer<T,E> transformer) Creates a page.
static <E,T> Page<T>	createPage(Page<? extends E> sourcePage, PageEntryTransformer<T,E> transformer) Transforms a page into another page.
static <E,T> PageDto	createPageDto(Page<? extends E> page, PageEntryTransformer<T,E> transformer) Transforms a page into a page DTO.
static PageRequestDto	createPageRequestDto(PageRequest pageRequest) Transforms a page request into a page request DTO.
static <T> T	jsonMapToObject(Map<String,Object> map, Class<T> valueType, com.fasterxml.jackson.databind.ObjectMapper objectMapper) Transforms a JSON map to an object.
static <T,S extends T> T	transform(Object xmlNodeOrJsonMap, Class<T> valueType, S defaultObject, JAXBContext jaxbContext, com.fasterxml.jackson.databind.ObjectMapper objectMapper) Transforms a XML node or a JSON map into an object.
static <T> T	xmlNodeToObject(Node node, Class<T> valueType, JAXBContext jaxbContext) Transforms a XML node into an object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

cast

public static <E> Page<E> cast(Page<?> page)

Casts a page.

createPage

public static <E,T> PageResult<T> createPage(Iterable<? extends E> entries,
                                             PageRequest pageRequest,
                                             long totalSize,
                                             PageEntryTransformer<T,E> transformer)

Creates a page.

Parameters:

entries - the page entries

pageRequest - the page request

totalSize - the total size

transformer - the entry transformer (may be null - than all entries will be added to the page without transforming)

Returns:

the page

createPage

public static <E,T> Page<T> createPage(Page<? extends E> sourcePage,
                                       PageEntryTransformer<T,E> transformer)

Transforms a page into another page.

Parameters:

sourcePage - the source page

transformer - the entry transformer (may be null - than all entries of the source page will be added to the target page without transforming)

Returns:

the target page

createPageDto

public static <E,T> PageDto createPageDto(Page<? extends E> page,
                                          PageEntryTransformer<T,E> transformer)

Transforms a page into a page DTO.

Parameters:

page - the page

transformer - the entry transformer (may be null - than all entries of the page will be added to the DTO without transforming)

Returns:

the page DTO

createPageRequestDto

public static PageRequestDto createPageRequestDto(PageRequest pageRequest)

Transforms a page request into a page request DTO.

Parameters:

pageRequest - the page request (can be null)

Returns:

the page request DTO (can be null)

transform

public static <T,S extends T> T transform(Object xmlNodeOrJsonMap,
                                          Class<T> valueType,
                                          S defaultObject,
                                          JAXBContext jaxbContext,
                                          com.fasterxml.jackson.databind.ObjectMapper objectMapper)
                                   throws Exception

Transforms a XML node or a JSON map into an object.

Parameters:

xmlNodeOrJsonMap - the XML node or JSON map

valueType - the class of the target object

defaultObject - a default object (optional)

jaxbContext - the JAXBContext (can be null)

objectMapper - the JSON object mapper (optional)

Returns:

the target object

Throws:

Exception - if transformation fails

xmlNodeToObject

public static <T> T xmlNodeToObject(Node node,
                                    Class<T> valueType,
                                    JAXBContext jaxbContext)
                             throws JAXBException

Transforms a XML node into an object.

Parameters:

node - the XML node

valueType - the class of the target object

jaxbContext - the JAXBContext (can be null)

Returns:

the target object

Throws:

JAXBException - if transformation fails

jsonMapToObject

public static <T> T jsonMapToObject(Map<String,Object> map,
                                    Class<T> valueType,
                                    com.fasterxml.jackson.databind.ObjectMapper objectMapper)
                             throws IOException

Transforms a JSON map to an object.

Parameters:

map - the JSON map

valueType - the class of the target object

objectMapper - the JSON object mapper (optional)

Returns:

the target object

Throws:

IOException - if transformation fails