com.sapportals.wcm.rfadapter

Class IDResolver

java.lang.Object

com.sapportals.wcm.rfadapter.IDResolver

public final class IDResolver
extends Object

offers functionality to calculate valid (and unique) IDs from a String that can be used to create IResource objects within a certain ICollection. To ensure the validity of the calculated IDs, the class uses the NameInfo class of the RepositoryFramework for a list of char that are forbidden. This class is implemented as a singleton. It uses the IDValidator class to check for invalid characters, while the check for uniqueness within a folder is done in this class. Note that uniqueness within a folder cannot be guaranteed, because the current user might not have the permission to see all elements within the current ICollection.

Since:

EP6, FP3

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	IDResolver.IDProposal an immutable object containing all information about the id generation.
static class	IDResolver.Status

Field Summary

Fields

Modifier and Type	Field and Description
static IDResolver.Status	INVALID
static IDResolver.Status	NON_UNIQUE
static char	NUMERATOR
static char	NUMERATOR_PREFIX
static char	NUMERATOR_SUFFIX
static char	REPLACER
static IDResolver.Status	UNIQUE

Method Summary

Modifier and Type	Method and Description
IDResolver.Status	checkID(String id, ICollection targetfolder) checks if the given id would be a valid id within the given folder.
IDResolver.IDProposal	generateID(String displayname, ICollection targetfolder) generates an ID proposal based on the given displayname that is valid within the given targetfolder.
List	generateIDs(List displaynames, ICollection targetfolder) generates ID proposals based on the list with displaynames that are valid within the given targetfolder.
static IDResolver	getInstance()
String	getInvalidChars()
char[]	invalidChars()
boolean	isValidID(String id) decides if the given parameter would be a valid id for an IResource.
String	normalizeID(String id)

Methods inherited from class java.lang.Object

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

Field Detail

UNIQUE

public static final IDResolver.Status UNIQUE

INVALID

public static final IDResolver.Status INVALID

NON_UNIQUE

public static final IDResolver.Status NON_UNIQUE

REPLACER

public static final char REPLACER

See Also:

Constant Field Values

NUMERATOR

public static final char NUMERATOR

See Also:

Constant Field Values

NUMERATOR_SUFFIX

public static final char NUMERATOR_SUFFIX

See Also:

Constant Field Values

NUMERATOR_PREFIX

public static final char NUMERATOR_PREFIX

See Also:

Constant Field Values

Method Detail

invalidChars

public char[] invalidChars()

getInvalidChars

public String getInvalidChars()

getInstance

public static IDResolver getInstance()

isValidID

public boolean isValidID(String id)

decides if the given parameter would be a valid id for an IResource. It will throw a NullPointerException, if the parameter is null

Parameters:

id - the id to test, must not be null

Returns:

true, if the id would be a valid ID, false otherwise

checkID

public IDResolver.Status checkID(String id,
                                 ICollection targetfolder)
                          throws WcmException

checks if the given id would be a valid id within the given folder. In comparison to the method isValidID it also checks, if the id would be unique within the folder. If one of the parameters is null, a NullPointerException will be thrown

Parameters:

id - the proposed id for the IResource

targetfolder - the folder in which to create the IResource

Returns:

a status declaring, if the given id is a valid id, a unique id within the given folder or a invalid id.

Throws:

WcmException - no description

normalizeID

public String normalizeID(String id)

generateID

public IDResolver.IDProposal generateID(String displayname,
                                        ICollection targetfolder)
                                 throws WcmException

generates an ID proposal based on the given displayname that is valid within the given targetfolder. The returned class contains the proposed id and will give further information why and how the proposed id differs from the given displayname. When creating a new IResource in the given ICollection using the ID generated by this method, you might still run into a NameAlreadyExistsException. This is due to several reasons:
The current user is not allowed to see all elements of the folder and one of the not-visible elements has this name
Another user has created an element in the meantime that has the same id

Parameters:

displayname - the display name supplied for the IResource

targetfolder - the folder in which the new IResource with the given display name is to be created

Returns:

IDProposal which contains the proposed id and gives further information why and how the proposed id differs from the given displayname

Throws:

WcmException - - no description

generateIDs

public List generateIDs(List displaynames,
                        ICollection targetfolder)
                 throws WcmException

generates ID proposals based on the list with displaynames that are valid within the given targetfolder. The returned classes contain the proposed id and will give further information why and how the proposed id differs from the given displayname. The objects of the returned list will be in the same order as the displaynames of the imported list were.

Parameters:

displaynames - a list that must contain only String objects

targetfolder - the folder in which the new IResource with the given displayname is to be created

Returns:

a list with IDProposal objects

Throws:

WcmException - no description