WMS-cache does not cache between sessions/INDEX_FILENAME = "index.xml" does not get created

[anonymous]

INDEX_FILENAME = "index.xml"

does not get created despite the message: Index for wms-cache doesn't exist, new file will be created.
Because of that

removeNonReferencedFiles()

always removes all files thus no cache between sessions, or removing the WMS-layer and adding it again. :-(
Version 4629

[jttt]

The message means that index will be created after josm is closed or wms layer removed. It's correct that removeNonReferenecdFiles() removes all files because josm can't reconstruct index just from filenames.

Real problem is in saving index. I don't know what goes wrong but you seem to have some programming knowledge so it would be great if you could import josm to eclipse, put breakpoint in saveIndex() method and check whether it's called and what happens there.

[jjaf.de]

Correct:

saveIndex()

causes an exception in WmsCache.java:302:

Failed to save wms-cache file
javax.xml.bind.JAXBException: "org.openstreetmap.josm.data.imagery.types" doesnt contain ObjectFactory.class or jaxb.index
        at com.sun.xml.internal.bind.v2.ContextFactory.createContext(Unknown Source)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at javax.xml.bind.ContextFinder.newInstance(Unknown Source)
        at javax.xml.bind.ContextFinder.find(Unknown Source)
        at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
        at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
        at org.openstreetmap.josm.data.imagery.WmsCache.saveIndex(WmsCache.java:302)
        at org.openstreetmap.josm.gui.layer.WMSLayer.destroy(WMSLayer.java:209)
        at org.openstreetmap.josm.gui.MapView.removeLayer(MapView.java:368)
        at org.openstreetmap.josm.Main.removeLayer(Main.java:217)
        at org.openstreetmap.josm.gui.dialogs.LayerListDialog$DeleteLayerAction.actionPerformed(LayerListDialog.java:401)
        at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
        at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
        at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
        at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
        at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
        at java.awt.Component.processMouseEvent(Unknown Source)
        at javax.swing.JComponent.processMouseEvent(Unknown Source)
        at java.awt.Component.processEvent(Unknown Source)
        at java.awt.Container.processEvent(Unknown Source)
        at java.awt.Component.dispatchEventImpl(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Window.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
        at java.awt.EventQueue.access$000(Unknown Source)
        at java.awt.EventQueue$1.run(Unknown Source)
        at java.awt.EventQueue$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
        at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
        at java.awt.EventQueue$2.run(Unknown Source)
        at java.awt.EventQueue$2.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)

[jttt]

In [4633/josm]:

Fix #7109 WMS-cache does not cache between sessions/INDEX_FILENAME = "index.xml" does not get created

[jjaf.de]

Thx, it works!