You can do IMyInterface(context) looks-ups with Zope 3 and it somehow automatically maps to getAdapter().
However does there exist multi-adapter equivalent. Something like:
portal_state = IPortalState((self.context, self.request))
would map to
portal_state = getMultiAdapter((self.context, self.request), interface=IPortalState)
There isn't such a short-cut; your first example is adapting a tuple (a general case that needs to be supported too).
This has been discussed numerous times on the lists, but I cannot recall the ins and outs of the details. You could start with the following thread if you have to know: http://tech.groups.yahoo.com/group/zope/message/185605
No, there's no shorthand for multi-adapter lookup. The reason given in the discussion toward the end of http://groups.google.com/group/zope-core-dev/browse_thread/thread/156acde2c8e799c7/63ca158f076ed010?pli=1 is that some users of zope.interface rely on being able to do single adaptation of tuples.
Related
I have an enumerand of around 150 entries, which I need to get into IBM Rhapsody.
Doing this by hand is clearly lengthy and error prone. I have google extensively but found only things that tell me how to edit the generated code -- not go the other way.
The question is: How is this done? And if there is no way -- please someone post that as an answer.
David,
I would jump into the Java API (plugin subsystem) and do it that way. If you haven't learned how to use the API, there is a bit of a learning curve. There are two ways to go about it: Implement a Java (or your favorite JVM language--I use Scala) app that realizes the Rhapsody Plugin framework and then you choose to package it up and deploy it so that it gets loaded when you load your model, or, if it is a one off job, do everything up to the point of packaging it up and then run it from within your IDE and you are done. If you are comfortable with Scala, I can post some code.
So what I did in the end was I edited the relevant .sbs file, used a small python program to generate the items I required, and then update the length of the array accordingly.
all_the_literals = ["enum_name = 0x4e", enum_name2 = 0xF2", ... ,]
for field1, waste, field1_value in map(lambda x: x.split(" "),
all_the_literals):
literal_string = f""" {{ IEnumerationLiteral
- _id = GUID {uuid.uuid4()};
- _name = \"{field1}\";
- codeUpdateCGTime = 5.16.2022::19:24:18;
- _modifiedTimeWeak = 5.16.2022::19:24:18;
- _value = \"{field1_value}\";
}}"""
print(literal_string)
Note the above "code" snippet purely prints the items, which you then copy-paste into the relevant field in the sbs file. YMMV -- this was the correct format for an enum in Rhapsody (and note how I fudged the update time, but it worked successfully, so you'll need to do the same if you use this answer).
Also note it's probably better to use bauhaus9's answer, but I definitely didn't have time for it.
I changed Change in persistence.xml
I also changed column definition (columnDefinition="XDB.XMLType") for xml fields
I checked OpenJpa(http://openjpa.208410.n2.nabble.com/Oracle-XMLType-fetch-problems-td6208344.html) site and IBM (http://www.ibm.com/support/knowledgecenter/SS7J6S_7.5.0/com.ibm.wsadapters.jca.jdbc.doc/env/doc/rjdb_problemsolutions.html)
My env is OpenJpa 2.0 and WAS 7
its throwing exception
org.apache.openjpa.persistence.PersistenceException: ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "SYS.XMLTYPE", line 169
Please suggest without changing OpenJpa2.0 as its part of IBM WebSphere Application Server V7.0 how can i handle sys.XMLTYPE data, i am migrating my application from db2 to Oracle in same environment.
Writing XML data can be tricky some times! Getting the correct drivers and things defined properly can have its challenges. I can not say exactly what you need to do given the lack of info on your domain model and such, but let me give some general things to look for. First, there is an XML test in the OpenJPA test framework if you want to make reference to it. It can be seen publicly here:
https://apache.googlesource.com/openjpa/+/refs/heads/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/jdbc/oracle/
Or, another test using an "XMLValueHandler" (likely this is beyond the scope of what you are looking for):
https://apache.googlesource.com/openjpa/+/refs/heads/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/xmlmapping/query/
Second, (stating the obvious) I assume you have a column in Oracle defined as "XMLTYPE". Also, I see you are using schema SYS. I'm sure you are aware but this is a system/admin schema......just for sanity sake you might want to first get things running using a non-system/admin schema just so we don't get hung up with any issues with your OpenJPA client not having the correct permissions.
Next, you need the following definition:
#Lob #Basic
#Column(name = "ANXMLCOLUMN", columnDefinition="XMLCOLUMN XMLType")
private String anXMLString;
The #Lob I think will be necessary if you are using data greater than 4000 chars (this was mentioned in one of the comments). To start I'd use a very small set of data (a couple characters), once that works, then experiment with > 4k.
Next, make sure to use the correct JDBC driver. The last time I experimented with an XMLType I used the Oracle JDBC 11.2.0.2 driver.
Finally, you might need to use the property "openjpa.jdbc.DBDictionary" with value "oracle(supportsSetClob=true,maxEmbeddedClobSize=-1)". Again, experiment with this AND look at the OpenJPA documentation on these properties to determine if they are necessary in your scenario. I think the supportsSetClob=true will only be necessary for older version (pre-2.2.x) of OpenJPA. You might also need to use property "openjpa.jdbc.SchemaFactory" with value "native". I would suggest you first try without either or these two properties. If that doesn't help, then experiment with these two properties. I know this is vague, but I don't know what your DDL or domain model looks like so I have to keep in vague.
Thanks,
Heath Thomann
Suppose I have defined a composite index and vertex label like so:
mgmt = g.getManagementSystem()
name = mgmt.makePropertyKey('name').dataType(String.class).make()
god = mgmt.getVertexLabel('god')
mgmt.buildIndex('byName',Vertex.class).addKey(name).indexOnly(god).buildCompositeIndex()
mgmt.commit()
How do I take advantage of this index in Gremlin?
Assuming it is something like g.V('label','god').has('name','zeus'), which is more performant?
g.V('label','god').has('name','zeus')
g.V('name','zeus').has('label','god')
Traditionally we would go with (2) because name is more highly selective than label, but is there something special about vertex labels that makes this untrue?
Ok, you've already found out, that it's currently impossible in Gremlin and only available through the Query API. Regarding the performance: Your two approaches won't make a difference; under the hood both queries generate the same Cassandra/HBase query (or whatever storage backend you are using).
Cheers,
Daniel
It doesn't work yet in TP2, but will work with TP3 (Titan 0.9 / next release). Currently you can do this:
g.query().has('label','god').has('name','zeus').vertices()
No idea about the performance profile still.
https://github.com/thinkaurelius/titan/issues/755
Is there a simple way to check if a content-type, or a specific object, has Versioning enabled/disabled in Plone (4.3.2)?
For context, I am making some unique conditionals around portal_actions. So instead of checking path('object/##iterate_control').checkout_allowed(), I need to first see if versioning is even enabled. Otherwise, the action in question does not display for items that have versioning disabled, because obviously it isn't checkout_allowed.
I didn't have any luck with good ole Google, and couldn't find this question anywhere here, so I hope it's not a dupe. Thanks!
I was able to get this working by creating a new script, importing getToolByName, and checking current content type against portal_repository.getVersionableContentTypes(). Then just included that script in the conditional.
I was looking for something like this that already existed, so if anyone knows of one let me know. Otherwise, I've got my own now. Thanks again!
The first thing that checkout_allowed does is check if the object in question supports versioning at all:
if not interfaces.IIterateAware.providedBy(context):
return False
(the interface being plone.app.iterate.interfaces.IIterateAware:
class IIterateAware( Interface ):
"""An object that can be used for check-in/check-out operations.
"""
The semantics Interface.providedBy(instance) are a bit unfortunate for usage in conditions or TAL scripts, because you'd need to import the interface, but there's a reversal helper:
context.portal_interface.objectImplements(context,
'plone.app.iterate.interfaces.IIterateAware')
Users open files in our app through a QFileDialog. The order of the filenames is bizarre. What is determining the sorting order, and how can we make it sort by filenames, or otherwise impose our own sorting, perhaps giving it a pointer to our own comparison function?
The documentation and online forums haven't been helpful. Unless it's well hidden, there doesn't seem to be any sorting method, property, etc.
This is a primarily Linux app, but also runs on Macs. (I know nothing about Mac.)
Here is the juicy part of the source code:
QtFileDialog chooser(parent, caption, directory, filter);
/// QtFileDialog is our class derived from QFileDialog
chooser.setModal(true);
chooser.setAcceptMode(acceptMode);
chooser.setFileMode(fileMode);
QStringList hist = chooser.history();
chooser.setHistory(hist);
/* point "x" */
if(chooser.exec()) {
QStringList files = chooser.selectedFiles();
...blah blah blah...
From one of the answers, I tried an evil experiment, adding this ill-informed guesswork code at "point x":
QSortFilterProxyModel *sorter = new QSortFilterProxyModel();
sorter->sort(1); // ???
chooser.setProxyModel(sorter);
But this crashed spectacularly at a point about 33 subroutine calls deep from this level of code. I admit, even after reading the Qt4 documentation and sample code, I have no idea of the proper usage of QSortFilterProxyModel.
Are you using QFileDialog by calling exec()? If you are, you should have a button to switch the view to Detail View. This will give you some column headers that you can click on to sort the files. It should remember that mode the next time the dialog opens but you can force it by calling setViewMode(QFileDialog::Detail) before calling exec().
An alternative is to call the static function QFileDialog::getOpenFileName() which will open a file dialog that is native to the OS on which you are running. Your users may like the familiarity of this option better.
Update 1:
About sort order in screen cap from OP:
This screen capture is actually showing a sorted list. I don't know if the listing behaviour is originating from the Qt dialog or the underlying file system but I know Windows XP and later do it this way.
When sorting filenames with embedded numbers, any runs of consecutive digits are treated as a single number. With the more classic plain string sorting, files would be sorted like this:
A_A_10e0
A_A_9a05
Going character by character, the first 1 sorts before the 9.
.. But with numerical interpretation (as in Windows 7 at least), they are sorted as:
A_A_9a05
A_A_10e0
The 9 sorts before the 10.
So, the sorting you are seeing is alphabetical with numerical interpretation and not just straight character by character. Some deep digging may be required to see if that is Qt behaviour or OS behaviour and whether or not it can be configured.
Update 2:
The QSortFilterProxyModel will sort the strings alphabetically by default so there is not much work to using it to get the behavior you are looking for. Use the following code where you have "point x" in your example.. (you almost had it :)
QSortFilterProxyModel *sorter = new QSortFilterProxyModel();
sorter->setDynamicSortFilter(true); // This ensures the proxy will resort when the model changes
chooser.setProxyModel(sorter);
I think what you need to do is create a QSortFilterProxyModel which you then set in your QFileDialog with QFileDialog::setProxyModel(QAbstractProxyModel * proxyModel)
Here are some relevant links to the Qt 4.6 docs about it.
http://doc.trolltech.com/4.6/qfiledialog.html#setProxyModel
http://doc.trolltech.com/4.6/qsortfilterproxymodel.html#details
I don't think it depends upon the implementation of Qt libraries... But upon the Native OS implementation..
For example in Windows,
if you use QFileDialog, it will display the Files and Directories by Name sorted.. It is the same when used in other applications. In the sense that, if you try to open a file through MS- Word, it indeed displays the Files and directories as Name sorted by default..
And am not sure about other environments since am not used to them...
But in Windows, you can change the sorted order by right-click in the area of Files and Directories display and can select the options you like.. For e.g like Name,size,type, modified... And also which is similar, when you use an MS-Word application...
So, I believe it does depend on the Native OS implementation and not on QFileDialog's...