Hi Peppe,
It should be almost repaired. It is still missing a fix to prevent
writing the data file for the view while saving the project.
Let me know if there is still something wrong.
Michaël
Le 19/08/2018 à 21:52, Michaël Michaud a écrit :
Hi Peppe,
Thanks a lot for letting me know. I'll try to check that as soon as
possible.
Michaël
Le 19/08/2018 à 18:04, Giuseppe Aruta a écrit :
Hi Michael,
I gave a look at the usage of LayerView class and I found a bug on
opening project if layerViews are saved into a project file
This is the sequence:
1) I create a project and load (or create) a new layer
2) I create a layerView of selected layer and click to save the project
3) OpenJUMP asks to save the newly created layer (=layerView) as JMP
or SHP.
4) I select to create a new layer. The the saving project is
finalized and a project file is saved.
5) I try to open the project.the _project is not opened_ and an error
message shows the problem is in OpenProjectWizard, possibly on
loadLayers(...) method:
j/ava.lang.Exception: Caricando il file progetto
'C:\Users\Beppe\Desktop\2.jmp' fallito con errore:
com.vividsolutions.jump.workbench.model.LayerView.
at
org.openjump.core.ui.plugin.file.open.OpenProjectWizard.open(OpenProjectWizard.java:195)
at
org.openjump.core.ui.plugin.file.open.OpenProjectWizard.open(OpenProjectWizard.java:132)
at
org.openjump.core.ui.plugin.file.open.OpenProjectWizard.run(OpenProjectWizard.java:127)
at
org.openjump.core.ui.plugin.AbstractWizardPlugin.run(AbstractWizardPlugin.java:73)/
/ .........................................../
I opened the project file with a text editor and substitute
any
layer class="com.vividsolutions.jump.workbench.model.LayerView"
with
layer class="com.vividsolutions.jump.workbench.model.Layer"
In this case I can open the project file in openjump with no problem.
------------------------------------------------------------------------------------------
Apart from the bug, I have some observations for possible further
development
a) a LayerView is be a simple "view" of a layer: the modification
action is syncroniozed: whenever I modified the geometries of a
layer, the modification affects also the conresponding LayerView. In
this case the "view" could be a parameter to save only into the
project file without the need to create a clone of the layer.
b) II found the LayerView can have a great positive impact on OJ
style as users can create multiple views of the same layer with
different styles.
I explored the possibility to create subviews of a selected layer,
according to defined attribute (*). The easy way was to create sub
feature collections according to the attribute, create conresponding
sub-layers (which are not opened into the view, create conresponding
views to load into the view.
Of coarse those subviews are not subviews of the original layer but
subviews of sub-layers. The syncronized modification is lost.
(*) This could be extremely useful as OJ lacks of a good
point/linestring decoration symbology according to attribute. I am
Thinking about vertex symbol rotation, the usage of wkt files, text
display next to symbols - what is available in CadPlann symbology
plugin available only for basic style
Best regards and thanks for your job
Peppe
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