# HG changeset patch
# User Sascha L. Teichmann <teichmann@intevation.de>
# Date 1380734683 -7200
# Node ID 744df5a03337a27bb335fc485e37c8bdc9ffc049
# Parent  8ab618dda8502b7ff519c3b96ace98159d577d41
Use diagram configuration and there processors to define compatible facets in loaded data.

diff -r 8ab618dda850 -r 744df5a03337 artifacts/src/main/java/org/dive4elements/river/artifacts/D4EArtifact.java
--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/D4EArtifact.java	Wed Oct 02 18:41:12 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/D4EArtifact.java	Wed Oct 02 19:24:43 2013 +0200
@@ -52,6 +52,7 @@
 import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator;
 import org.dive4elements.river.artifacts.cache.CacheFactory;
 import org.dive4elements.river.artifacts.context.RiverContext;
+import org.dive4elements.river.artifacts.context.RiverContextFactory;
 import org.dive4elements.river.artifacts.model.CalculationMessage;
 import org.dive4elements.river.artifacts.states.DefaultState;
 import org.dive4elements.river.artifacts.states.DefaultState.ComputeType;
@@ -119,6 +120,13 @@
 
     private String boundToOut;
 
+    /**
+     * Interface to a global facet filter.
+     */
+    public interface FacetFilter {
+        boolean accept(String outName, String facetName);
+    } // interface FacetFilter
+
 
     /**
      * The default constructor that creates an empty D4EArtifact.
@@ -1279,7 +1287,7 @@
             log.debug("State '" + stateId + "' has facets " + fs);
         }
 
-        List<Output> gen = generateOutputs(list, fs);
+        List<Output> gen = generateOutputs(list, filterFacets(fs));
 
         if (debug) {
             log.debug("State '" + stateId + "' has " + gen.size() + " outs");
@@ -1288,6 +1296,29 @@
         return gen;
     }
 
+    /** If a global facet filter and a bounded out are defined
+     *  use them to eliminate unwished facets.
+     */
+    protected List<Facet> filterFacets(List<Facet> facets) {
+        if (boundToOut == null || boundToOut.isEmpty()) {
+            return facets;
+        }
+
+        FacetFilter facetFilter =
+            (FacetFilter)RiverContextFactory.getGlobalContext()
+                .get(RiverContext.FACETFILTER_KEY);
+        if (facetFilter == null) {
+            return facets;
+        }
+
+        List<Facet> result = new ArrayList<Facet>(facets.size());
+        for (Facet facet: facets) {
+            if (facetFilter.accept(boundToOut, facet.getName())) {
+                result.add(facet);
+            }
+        }
+        return result;
+    }
 
     /**
      * Generate a list of outputs with facets from fs if type is found in list
diff -r 8ab618dda850 -r 744df5a03337 artifacts/src/main/java/org/dive4elements/river/artifacts/context/RiverContext.java
--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/context/RiverContext.java	Wed Oct 02 18:41:12 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/context/RiverContext.java	Wed Oct 02 19:24:43 2013 +0200
@@ -46,6 +46,9 @@
     public static final String OUTGENERATORS_KEY =
         "flys.export.outgenerators";
 
+    public static final String FACETFILTER_KEY =
+        "flys.export.facetfilter";
+
     /** The key that is used to store the map of themes in the context. */
     public static final String THEMES =
         "flys.themes.map";
diff -r 8ab618dda850 -r 744df5a03337 artifacts/src/main/java/org/dive4elements/river/artifacts/context/RiverContextFactory.java
--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/context/RiverContextFactory.java	Wed Oct 02 18:41:12 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/context/RiverContextFactory.java	Wed Oct 02 19:24:43 2013 +0200
@@ -389,6 +389,7 @@
 
         logger.info("Successfully loaded " + idx + " output generators.");
         context.put(RiverContext.OUTGENERATORS_KEY, generators);
+        context.put(RiverContext.FACETFILTER_KEY, generators);
     }
 
 
diff -r 8ab618dda850 -r 744df5a03337 artifacts/src/main/java/org/dive4elements/river/exports/DiagramAttributes.java
--- a/artifacts/src/main/java/org/dive4elements/river/exports/DiagramAttributes.java	Wed Oct 02 18:41:12 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/exports/DiagramAttributes.java	Wed Oct 02 19:24:43 2013 +0200
@@ -26,7 +26,7 @@
 import org.dive4elements.artifacts.common.utils.ElementConverter;
 
 public class DiagramAttributes
-implements   ElementConverter
+implements   ElementConverter, D4EArtifact.FacetFilter
 {
     private static Logger log = Logger.getLogger(DiagramAttributes.class);
 
@@ -528,5 +528,16 @@
             ? "" // null?
             : axesAttrs.get(index).getName();
     }
+
+    @Override
+    public boolean accept(String outName, String facetName) {
+        Instance instance = new Instance();
+        for (Processor pr: instance.getProcessors()) {
+            if (pr.canHandle(facetName)) {
+                return true;
+            }
+        }
+        return false;
+    }
 }
 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
diff -r 8ab618dda850 -r 744df5a03337 artifacts/src/main/java/org/dive4elements/river/exports/GeneratorLookup.java
--- a/artifacts/src/main/java/org/dive4elements/river/exports/GeneratorLookup.java	Wed Oct 02 18:41:12 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/exports/GeneratorLookup.java	Wed Oct 02 19:24:43 2013 +0200
@@ -11,10 +11,15 @@
 import java.util.HashMap;
 import java.util.Map;
 
+import org.apache.log4j.Logger;
 import org.dive4elements.river.utils.Pair;
+import org.dive4elements.river.artifacts.D4EArtifact.FacetFilter;
 
 public class GeneratorLookup
+implements   FacetFilter
 {
+    private static Logger log = Logger.getLogger(GeneratorLookup.class);
+
     private Map<String, Pair<Class<OutGenerator>, Object>> generators;
 
     public GeneratorLookup() {
@@ -34,5 +39,30 @@
     public Pair<Class<OutGenerator>, Object> getGenerator(String outName) {
         return generators.get(outName);
     }
+
+    @Override
+    public boolean accept(String outName, String facetName) {
+
+        Pair<Class<OutGenerator>, Object> pair = generators.get(outName);
+        if (pair == null) {
+            return true;
+        }
+
+        try {
+            Class<OutGenerator> clazz = pair.getA();
+            OutGenerator generator = clazz.newInstance();
+
+            return generator instanceof FacetFilter
+                ? ((FacetFilter)generator).accept(outName, facetName)
+                : true;
+        }
+        catch (InstantiationException ie) {
+            log.error(ie, ie);
+        }
+        catch (IllegalAccessException iae) {
+            log.error(iae, iae);
+        }
+        return true;
+    }
 }
 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :