X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.model%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fmodel%2Fnodetypes%2FEntityNodeType.java;fp=bundles%2Forg.simantics.browsing.ui.model%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fmodel%2Fnodetypes%2FEntityNodeType.java;h=baf8ff3a54dbcddd1dd78772e2d6f12348f549e3;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.browsing.ui.model/src/org/simantics/browsing/ui/model/nodetypes/EntityNodeType.java b/bundles/org.simantics.browsing.ui.model/src/org/simantics/browsing/ui/model/nodetypes/EntityNodeType.java
new file mode 100644
index 000000000..baf8ff3a5
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+++ b/bundles/org.simantics.browsing.ui.model/src/org/simantics/browsing/ui/model/nodetypes/EntityNodeType.java
@@ -0,0 +1,191 @@
+/*******************************************************************************
+ * Copyright (c) 2010, 2011 Association for Decentralized Information Management in
+ * Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.browsing.ui.model.nodetypes;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.WeakHashMap;
+
+import org.simantics.browsing.ui.NodeContext;
+import org.simantics.browsing.ui.common.NodeContextBuilder;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.utils.NameUtils;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.layer0.Layer0;
+import org.simantics.ui.selection.WorkbenchSelectionElement;
+
+/**
+ * A node type that corresponds to some entity type.
+ * @author Hannu Niemistö
+ */
+public class EntityNodeType implements NodeType {
+    public List<Resource> entityTypes;
+    private static final WeakHashMap<List<Resource>, EntityNodeType> nodeTypeCache =
+        new WeakHashMap<List<Resource>, EntityNodeType>();
+
+    private EntityNodeType(List<Resource> entityTypes) {
+        this.entityTypes = entityTypes;
+    }
+    
+    public static EntityNodeType create(Resource entityType) {
+        List<Resource> entityTypes = Collections.singletonList(entityType);
+        synchronized(nodeTypeCache) {
+            EntityNodeType result = nodeTypeCache.get(entityTypes);
+            if(result == null) {
+                result = new EntityNodeType(entityTypes);
+                nodeTypeCache.put(entityTypes, result);
+            }
+            return result;
+        }
+    }
+    
+    public static EntityNodeType create(Collection<Resource> entityTypes) {
+        return createInternal(new ArrayList<Resource>(entityTypes));
+    }
+    
+    private static EntityNodeType createInternal(ArrayList<Resource> entityTypes) {
+        if(entityTypes.isEmpty())
+            throw new IllegalArgumentException();
+        else if(entityTypes.size() == 1)
+            return create(entityTypes.get(0));
+        else {
+            Collections.sort(entityTypes);
+            synchronized(nodeTypeCache) {
+                EntityNodeType result = nodeTypeCache.get(entityTypes);
+                if(result == null) {
+                    result = new EntityNodeType(entityTypes);
+                    nodeTypeCache.put(entityTypes, result);
+                }
+                return result;
+            }
+        }
+    }
+    
+    public static NodeType getNodeTypeFor(ReadGraph graph, Resource resource) throws DatabaseException {
+        ArrayList<Resource> types = new ArrayList<Resource>(graph.getPrincipalTypes(resource));
+        if(types.isEmpty())
+            return null;
+        else
+            return createInternal(types);
+    }
+    
+    public NodeType getNodeTypeOf(ReadGraph graph, Resource resource) throws DatabaseException {
+        ArrayList<Resource> types = new ArrayList<Resource>();
+        loop:
+        for(Resource t : graph.getPrincipalTypes(resource)) {
+            for(Resource et : entityTypes)
+                if(!graph.isInheritedFrom(t, et))
+                    continue loop;
+            types.add(t);
+        }
+        
+        if(types.isEmpty())
+            return null;
+        
+        return createInternal(types);
+    }
+    
+    @Override
+    public NodeContext createNodeContext(ReadGraph graph, Object content)
+            throws DatabaseException {
+        if(content instanceof Resource) {
+            Resource resource = (Resource)content;
+            NodeType nodeType = getNodeTypeOf(graph, resource);            
+            if(nodeType != null)
+                return NodeContextBuilder.buildWithData(KEY_SEQUENCE,
+                        new Object[] {content, nodeType});            
+        }
+        return null;
+    }
+
+    @Override
+    public Class<?> getContentType() {
+        return Resource.class;
+    }
+    
+    @Override
+    public int hashCode() {
+        return entityTypes.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        EntityNodeType other = (EntityNodeType) obj;
+        return entityTypes.equals(other.entityTypes);
+    }
+
+    @Override
+    public boolean inherits(ReadGraph graph, NodeType superType) throws DatabaseException {
+        if(this == superType)
+            return true;
+        if (superType.getClass() != EntityNodeType.class)
+            return false;
+        loop:
+        for(Resource st : ((EntityNodeType)superType).entityTypes) {
+            for(Resource t : entityTypes)
+                if(graph.isInheritedFrom(t, st))
+                    continue loop;
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public Collection<NodeType> getSuper(ReadGraph g) throws DatabaseException {
+        if(entityTypes.size() == 1) {
+            Layer0 l0 = Layer0.getInstance(g);
+            Collection<Resource> supertypes = g.getObjects(entityTypes.get(0), l0.Inherits);
+            ArrayList<NodeType> supernodetypes = new ArrayList<NodeType>(supertypes.size());
+            for(Resource supertype : supertypes)
+                supernodetypes.add(create(supertype));
+            return supernodetypes;
+        }
+        else {
+            ArrayList<NodeType> supernodetypes = new ArrayList<NodeType>(entityTypes.size());
+            for(Resource t : entityTypes)
+                supernodetypes.add(create(t));
+            return supernodetypes;
+        }
+    }
+
+    @Override
+    public String toString(ReadGraph graph) throws DatabaseException {
+        StringBuilder b = new StringBuilder();
+        b.append('[');
+        boolean first = true;
+        for(Resource t : entityTypes) {
+            if(first)
+                first = false;
+            else
+                b.append(", ");
+            b.append(NameUtils.getSafeName(graph, t));
+        }
+        b.append(']');
+        return b.toString();
+    }
+
+    @Override
+    public WorkbenchSelectionElement getWorkbenchSelectionElement(NodeContext context) {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+}