de.hybris.platform.impex.jalo.translators

Class CollectionValueTranslator

java.lang.Object

de.hybris.platform.impex.jalo.translators.AbstractValueTranslator

de.hybris.platform.impex.jalo.translators.CollectionValueTranslator

Direct Known Subclasses:

ActiveDirectoryGroupCollectionTranslator, DiscountValuesTranslator, Europe1DiscountsTranslator, Europe1PricesTranslator, ExtractUserGroupTranslator, PromotionPriceRowsTranslator, TaxValuesTranslator

public class CollectionValueTranslator
extends AbstractValueTranslator

Constructor Summary

Constructors

Constructor and Description
CollectionValueTranslator(CollectionType targetType, AbstractValueTranslator elementTranslator) Instantiates a new collection translator instance for collections of type targetType translatable by elementTranslator.
CollectionValueTranslator(CollectionType targetType, AbstractValueTranslator elementTranslator, char delimiter) Not public constructors for testing purposes.

Method Summary

Modifier and Type	Method and Description
String	exportValue(Object value) Translates an attribute value for export usage.
protected char	getCollectionValueDelimiter() Returns the used element delimiter in collections for defined descriptor.
AbstractValueTranslator	getElementTranslator() Returns the used translator for an single element of collection.
Object	importValue(String valueExpr, Item forItem) Translates a tokenized csv value for import usage.
void	init(StandardColumnDescriptor descriptor) Called once per header creation to allow configuring this translator using column modifiers etc.
protected boolean	isDelimiter(String collStr, int pos, char character) Deprecated. not needed any more - to hook in tokenizing override splitAndUnescape(String) instead!
protected boolean	isEmpty(String collStr) Checks if given expression is empty.
protected String	joinAndEscape(List strings) Concats collection element strings into one string delimited by the configured delimiter.
protected boolean	processItem(String token, Item forItem, Collection col, boolean append, boolean allowNull) Translates given token to an value (item attribute) and adds or removes it to given list.
protected void	processItems(List<String> expressions, Item forItem, BitSet doAppendSet, Collection coll, boolean allowNull) Processes all expressions at once.
protected List<String>	splitAndUnescape(String valueExpr) Used for tokenizing the cell string into several collection element tokens.
void	validate(StandardColumnDescriptor columnDescriptor) Validates the value translator once per header creation.

Methods inherited from class de.hybris.platform.impex.jalo.translators.AbstractValueTranslator

clearStatus, createTranslator, createTranslator, createTranslator, debug, error, getColumnDescriptor, getFlexibleSearch, info, isDebugEnabled, isInfoEnabled, setEmpty, setError, warn, wasEmpty, wasUnresolved

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionValueTranslator

public CollectionValueTranslator(CollectionType targetType,
                                 AbstractValueTranslator elementTranslator)

Instantiates a new collection translator instance for collections of type targetType translatable by elementTranslator.

Parameters:

targetType - type of collection elements

elementTranslator - translator for translating elements of collection

CollectionValueTranslator

public CollectionValueTranslator(CollectionType targetType,
                                 AbstractValueTranslator elementTranslator,
                                 char delimiter)

Not public constructors for testing purposes. Additionally to the regular constructor, you can specify the delimiters to use for item separation.

Parameters:

targetType - type of collection elements

elementTranslator - translator for translating elements of collection

delimiter - delimiter to use for element separation

Method Detail

validate

public void validate(StandardColumnDescriptor columnDescriptor)
              throws HeaderValidationException

Description copied from class: AbstractValueTranslator

Validates the value translator once per header creation.

Overrides:

validate in class AbstractValueTranslator

Parameters:

columnDescriptor - descriptor where the value to translate belongs to

Throws:

HeaderValidationException - validation has thrown errors

init

public void init(StandardColumnDescriptor descriptor)

Description copied from class: AbstractValueTranslator

Called once per header creation to allow configuring this translator using column modifiers etc.

Overrides:

init in class AbstractValueTranslator

Parameters:

descriptor - descriptor where the value to translate belongs to

importValue

public Object importValue(String valueExpr,
                          Item forItem)
                   throws JaloInvalidParameterException

Description copied from class: AbstractValueTranslator

Translates a tokenized csv value for import usage. This means that the result object must be a instance of the expected attribute type.

Specified by:

importValue in class AbstractValueTranslator

Parameters:

valueExpr - expression to translate

forItem - the target item in case it already exist, null otherwise (for partOf attributes!)

Returns:

Object translated value

Throws:

JaloInvalidParameterException - value can not be translated with this translator or is invalid

processItem

protected boolean processItem(String token,
                              Item forItem,
                              Collection col,
                              boolean append,
                              boolean allowNull)

Translates given token to an value (item attribute) and adds or removes it to given list.

Parameters:

token - string representation of one value

forItem - existing item if exist (can be null)

col - existing collection for adding/removing (non null)

append - add (true) or remove (false) attribute to/from existing collection?

allowNull - if the string is translated to null, do you want to ignore it?

Returns:

true, if an attribute was added/removed to the collection, false otherwise

processItems

protected void processItems(List<String> expressions,
                            Item forItem,
                            BitSet doAppendSet,
                            Collection coll,
                            boolean allowNull)

Processes all expressions at once. This applies to item expressions only! Internally this method calls ItemExpressionTranslator.convertAllToJalo(Item, List, List) to perform a single query fetching *all* items at once to avoid database roundtrip.

Parameters:

expressions -

forItem -

doAppendSet -

coll -

allowNull -

exportValue

public String exportValue(Object value)
                   throws JaloInvalidParameterException

Description copied from class: AbstractValueTranslator

Translates an attribute value for export usage. This means the attribute value must be transformed into a string which should be re-importable again.

Specified by:

exportValue in class AbstractValueTranslator

Parameters:

value - value to translate

Returns:

String translated value

Throws:

JaloInvalidParameterException - value can not be translated with this translator or is invalid

getElementTranslator

public AbstractValueTranslator getElementTranslator()

Returns the used translator for an single element of collection.

Returns:

used translator

isEmpty

protected boolean isEmpty(String collStr)

Checks if given expression is empty.

Parameters:

collStr - collection expression to check

Returns:

true if expression is empty (null or length of 0), false otherwise

joinAndEscape

protected String joinAndEscape(List strings)

Concats collection element strings into one string delimited by the configured delimiter. If needed the element strings are escaped in case they contain delimiter or other special characters.

As default this simply calls CSVUtils.joinAndEscape(List, char[], char, boolean).

Parameters:

strings - the collection element strings

Returns:

the complete cell string

splitAndUnescape

protected List<String> splitAndUnescape(String valueExpr)

Used for tokenizing the cell string into several collection element tokens. Also this method does unescaping in case the collection element tokens contain escaped delimiters or other special characters.

As default this calls simply CSVUtils.splitAndUnescape(String, char[], boolean).

Parameters:

valueExpr - the cell value

Returns:

the list of element tokens

getCollectionValueDelimiter

protected char getCollectionValueDelimiter()

Returns the used element delimiter in collections for defined descriptor.

Returns:

used element delimiter

isDelimiter

@Deprecated
protected final boolean isDelimiter(String collStr,
                                                int pos,
                                                char character)

Deprecated. not needed any more - to hook in tokenizing override splitAndUnescape(String) instead!