X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.objmap2%2Fsrc%2Forg%2Fsimantics%2Fobjmap%2Fstructural%2Frules%2Fdomain%2FStructuralRelatedObjectAccessor.java;fp=bundles%2Forg.simantics.objmap2%2Fsrc%2Forg%2Fsimantics%2Fobjmap%2Fstructural%2Frules%2Fdomain%2FStructuralRelatedObjectAccessor.java;h=66e6ea908f6e095c5dff644b9da7a636a35c0d7c;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.objmap2/src/org/simantics/objmap/structural/rules/domain/StructuralRelatedObjectAccessor.java b/bundles/org.simantics.objmap2/src/org/simantics/objmap/structural/rules/domain/StructuralRelatedObjectAccessor.java
new file mode 100644
index 000000000..66e6ea908
--- /dev/null
+++ b/bundles/org.simantics.objmap2/src/org/simantics/objmap/structural/rules/domain/StructuralRelatedObjectAccessor.java
@@ -0,0 +1,131 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2013 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.objmap.structural.rules.domain;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.objmap.exceptions.MappingException;
+import org.simantics.objmap.graph.rules.domain.IDomainAccessor;
+import org.simantics.objmap.structural.StructuralResource;
+
+
+public class StructuralRelatedObjectAccessor implements IDomainAccessor<StructuralResource,StructuralResource> {
+
+    static Logger LOGGER = Logger.getLogger("org.simantics.objmap");
+    
+	Resource relation;
+	boolean useTypeResource;
+	
+	private boolean preventStructuralChanges = true;
+	private boolean preventStructuralRootChanges = true;
+	
+	public StructuralRelatedObjectAccessor(Resource relation, boolean useTypeResource) {
+		this.relation = relation;
+		this.useTypeResource = useTypeResource;
+	}
+	
+	public StructuralRelatedObjectAccessor(Resource relation, boolean useTypeResource, boolean preventStructuralChanges, boolean preventStructuralRootChanges) {
+		this.relation = relation;
+		this.useTypeResource = useTypeResource;
+		this.preventStructuralChanges = preventStructuralChanges;
+		this.preventStructuralRootChanges = preventStructuralRootChanges;
+	}
+	
+ private boolean preventChange(StructuralResource element) {
+    	return preventStructuralChanges && element.isStructural() && (!element.isStructuralRoot()||preventStructuralRootChanges);	
+    }
+
+	@Override
+	public StructuralResource get(ReadGraph g, StructuralResource element) throws MappingException {
+		try {
+			
+			LOGGER.info("        RelatedObjectAccessor.get");
+			
+			if (!element.isStructural())
+				return null;
+			Resource instance = StructuralUtils.getContainingInstance(element);
+			    
+			Resource publicRelation = StructuralUtils.getPublishedRelation(g, element, relation);
+
+		     if (publicRelation == null)
+		    	return null;
+			Resource r =  g.getPossibleObject(instance, publicRelation);
+			if (r == null)
+				return null;
+			List<Resource> context = new ArrayList<Resource>();
+			for (int i = 0; i < element.getContext().size()-1; i++)
+				context.add(element.getContext().get(i));
+			if (StructuralUtils.isStructuralInstance(g, r)) {
+				return new StructuralResource(g, r, context,r);
+			} else {
+				return new StructuralResource(g, r, context);
+			}
+		} catch (DatabaseException e) {
+			throw new MappingException(e);
+		}
+	}
+	
+	@Override
+	public boolean set(WriteGraph g, StructuralResource element, StructuralResource value)
+			throws MappingException {
+		try {
+		    LOGGER.info("        RelatedObjectAccessor.set");
+		    Resource instance = StructuralUtils.getContainingInstance(element);
+		    Resource publicRelation = null;
+		    if (instance == null)
+		    	return false;
+		    publicRelation = StructuralUtils.getPublishedRelation(g, element, relation);
+		    if (value == null) {
+		    	if (publicRelation == null)
+		    		return false;
+		    	if (preventChange(element))
+	    			return false;
+		    	g.deny(instance, publicRelation);
+		    	return true;
+		    } else {
+		    	if (publicRelation == null) {
+		    		if (preventChange(element))
+		    			return false;
+		    		publicRelation = StructuralUtils.getOrCreatePublishedRelation(g, element, relation);
+		    		g.claim(instance, publicRelation, value.getResource());
+		    		return true;
+		    	} else {
+		    		Resource r = g.getPossibleObject(instance, publicRelation);
+		    		if (r == null) {
+		    			if (preventChange(element))
+			    			return false;
+		    			g.claim(instance, publicRelation, value.getResource());
+		    			return true;
+		    		} else {
+		    			if (r.equals(value.getResource()))
+		    				return false;
+		    			if (preventChange(element))
+			    			return false;
+				    	g.deny(instance, publicRelation);
+		    			g.claim(instance, publicRelation, value.getResource());
+		    			return true;
+		    		}
+		    	}
+		    }
+		} catch (DatabaseException e) {
+			throw new MappingException(e);
+		}
+		
+	}
+
+}