ERDDelayedExtraQualifierAssignment Class Reference

Inherits er::directtoweb::assignments::delayed::ERDDelayedAssignment.

Collaboration diagram for ERDDelayedExtraQualifierAssignment:

[legend]

List of all members.

Public Member Functions
	ERDDelayedExtraQualifierAssignment (String key, Object value)
	ERDDelayedExtraQualifierAssignment (EOKeyValueUnarchiver u)
Object	fireNow (D2WContext c)
Static Public Member Functions
static Object	decodeWithKeyValueUnarchiver (EOKeyValueUnarchiver eokeyvalueunarchiver)
Static Public Attributes
static final Logger	log = Logger.getLogger(ERDDelayedExtraQualifierAssignment.class)
Protected Member Functions
EOQualifier	extraQualifier (D2WContext c, NSDictionary dict)
EOQualifier	qualifierForArray (String key, NSArray objects)
EOQualifier	qualifierForObject (String key, Object object)

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Detailed Description

Very useful when you want to restrict the things a user can see during searches or in list pages.
set it up via a rule like:

  entity.name = "Movie" and session.user.role <> "admin"
   =>
  extraRestrictingQualifier = {
      "studio" = "session.user.studios";
  } [er.directtoweb.ERDDelayedExtraQualifierAssignment]

then in your query page use sth like:

 public EODataSource queryDataSource() {
    EODataSource ds = super.queryDataSource();
    if (ds != null && (ds instanceof EODatabaseDataSource)) {
        EOFetchSpecification fs = ((EODatabaseDataSource)ds).fetchSpecification();
        EOQualifier q = fs.qualifier();
        EOQualifier extraQualifier = (EOQualifier)d2wContext().valueForKey("extraRestrictingQualifier");
        if(q != null && extraQualifier != null) {
            q = new EOAndQualifier(new NSArray(new Object[] {q, extraQualifier}));
        } else if(extraQualifier != null) {
            q = extraQualifier;
        }
        fs.setQualifier(q);
    }
    return ds;
 }

This should guarantee that the user can only see the Movies that are made by studios contained in his studio relationship. If the value is null, then this qualifier will not be added. To search for NULL, return NSKeyValueCoding.NullValue.

Author:

ak

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Constructor & Destructor Documentation

ERDDelayedExtraQualifierAssignment

(

EOKeyValueUnarchiver

u

)

Public constructor

Parameters:

u

key-value unarchiver used when unarchiving from rule files.

ERDDelayedExtraQualifierAssignment	(	String	key,
		Object	value
	)

Public constructor

Parameters:

	key	context key
	value	of the assignment

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Member Function Documentation

static Object decodeWithKeyValueUnarchiver

(

EOKeyValueUnarchiver

eokeyvalueunarchiver

)

[static]

Static constructor required by the EOKeyValueUnarchiver interface. If this isn't implemented then the default behavior is to construct the first super class that does implement this method. Very lame.

Parameters:

eokeyvalueunarchiver

to be unarchived

Returns:

decoded assignment of this class

EOQualifier extraQualifier	(	D2WContext	c,
		NSDictionary	dict
	)			[protected]

Object fireNow

(

D2WContext

c

)

[virtual]

Implemented by subclasses.

Implements ERDDelayedAssignment.

EOQualifier qualifierForArray	(	String	key,
		NSArray	objects
	)			[protected]

EOQualifier qualifierForObject	(	String	key,
		Object	object
	)			[protected]

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Member Data Documentation

final Logger log = Logger.getLogger(ERDDelayedExtraQualifierAssignment.class) [static]

logging support

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The documentation for this class was generated from the following file:

• /opt/source/Wonder/Frameworks/Core/ERDirectToWeb/Sources/er/directtoweb/assignments/delayed/ERDDelayedExtraQualifierAssignment.java