Package org.cristalise.kernel.lifecycle.routingHelpers

Class DataHelperUtility

java.lang.Object

org.cristalise.kernel.lifecycle.routingHelpers.DataHelperUtility

public class DataHelperUtility
extends Object

Utility class to retrieve and resolve DataHelpers

Constructor Summary

Constructors

Constructor	Description
DataHelperUtility()

Method Summary

Modifier and Type	Method	Description
static Object	evaluateValue(ItemPath itemPath, Object value, String actContext, TransactionKey transactionKey)	If the
static DataHelper	getDataHelper(String id)	First checks the configuration properties to instantiate the requested Datahelper.

Methods inherited from class java.lang.Object

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

Constructor Details

DataHelperUtility

public DataHelperUtility()

Method Details

getDataHelper

public static DataHelper getDataHelper(String id)
                                throws InvalidDataException

First checks the configuration properties to instantiate the requested Datahelper. If there is such no property, it uses the given id to instantiate one of these classes: ViewpointDataHelper, PropertyDataHelper, ActivityDataHelper

Parameters:

id - the string used to identify the DataHelper in the cristal-ise configuration

Returns:

the DataHelper instance

Throws:

InvalidDataException - could not configure DataHelper

evaluateValue

public static Object evaluateValue(ItemPath itemPath,
 Object value,
 String actContext,
 TransactionKey transactionKey)
                            throws InvalidDataException,
PersistencyException,
ObjectNotFoundException

If the

Parameters:

itemPath - the actual Item context

value - the value to be evaluated

actContext - activity path

transactionKey - database transaction transactionKey

Returns:

String value which was evaluated using DataHelper implementation

Throws:

InvalidDataException - data inconsistency

PersistencyException - persistency issue

ObjectNotFoundException - object was not found