X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.objmap2%2Fsrc%2Forg%2Fsimantics%2Fobjmap%2Fgraph%2Fschema%2FSimpleLinkType.java;fp=bundles%2Forg.simantics.objmap2%2Fsrc%2Forg%2Fsimantics%2Fobjmap%2Fgraph%2Fschema%2FSimpleLinkType.java;h=880d117aad2d6a30b91270d1cf2b995433064be5;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/schema/SimpleLinkType.java b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/schema/SimpleLinkType.java
new file mode 100644
index 000000000..880d117aa
--- /dev/null
+++ b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/schema/SimpleLinkType.java
@@ -0,0 +1,140 @@
+/*******************************************************************************
+ * 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.graph.schema;
+
+import java.util.ArrayList;
+
+import org.apache.log4j.Logger;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.common.utils.NameUtils;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.layer0.Layer0;
+import org.simantics.objmap.backward.IBackwardMapping;
+import org.simantics.objmap.bidirectional.IBidirectionalMappingRule;
+import org.simantics.objmap.exceptions.MappingException;
+import org.simantics.objmap.forward.IForwardMapping;
+
+
+/**
+ * A link type that is associated with single domain and range type (class).
+ * SimpleLinkType is composed of simpler rules whose combination determines
+ * its update policy.
+ * @author Hannu Niemist�
+ */
+public class SimpleLinkType<Range> implements ILinkType<Resource,Range> {
+    
+    static Logger LOGGER = Logger.getLogger("org.simantics.objmap");
+    
+    public Resource domainType;
+    public Class<?> rangeType;
+    ArrayList<IBidirectionalMappingRule<Resource, Range>> rules;
+    
+    public SimpleLinkType(Resource domainType, Class<?> rangeType,
+            ArrayList<IBidirectionalMappingRule<Resource, Range>> rules) {
+        this.domainType = domainType;
+        this.rangeType = rangeType;
+        this.rules = rules;
+    }
+
+    public SimpleLinkType(Resource domainType, Class<?> rangeType) {
+        this(domainType, rangeType, new ArrayList<IBidirectionalMappingRule<Resource, Range>>());
+    }
+
+    /**
+     * Adds a new rule to this link type that is enforced
+     * during updates.
+     */
+    public void addRule(IBidirectionalMappingRule<Resource, Range> rule) {
+        rules.add(rule);
+    }
+    
+    @Override
+    public Resource createDomainElement(WriteGraph g, Range rangeElement)
+            throws MappingException {
+        try {
+            if(LOGGER.isInfoEnabled())
+                LOGGER.info("SimpleLinkType.createDomainElement " +
+                        rangeElement.toString()
+                );
+            Resource result = g.newResource();
+            g.claim(result, Layer0.getInstance(g).InstanceOf, null, domainType);
+            return result;
+        } catch(DatabaseException e) {
+            throw new MappingException(e);
+        }
+    }
+    @SuppressWarnings("unchecked")
+	@Override
+    public Range createRangeElement(ReadGraph g, Resource domainElement)
+            throws MappingException {
+        try {
+            if(LOGGER.isInfoEnabled())
+                try { 
+                    LOGGER.info("SimpleLinkType.createRangeElement " +
+                    		NameUtils.getSafeName(g, domainElement)
+                            );
+                } catch(DatabaseException e) {
+                    throw new MappingException(e);
+                }
+            return (Range)rangeType.newInstance();
+        } catch (InstantiationException e) {
+            throw new MappingException(e);
+        } catch (IllegalAccessException e) {
+            throw new MappingException(e);
+        }
+    }
+    
+    public void createDomain(WriteGraph graph, IBackwardMapping<Resource,Range> mapping, Resource domainElement, Range rangeElement) throws MappingException {
+    	updateDomain(graph, mapping, domainElement, rangeElement);
+    };
+    
+    public void createRange(ReadGraph graph, org.simantics.objmap.forward.IForwardMapping<Resource,Range> mapping, Resource domainElement, Range rangeElement) throws MappingException {
+    	updateRange(graph, mapping, domainElement, rangeElement);
+    };
+    
+    public boolean updateDomain(WriteGraph g, IBackwardMapping<Resource,Range> map, Resource domainElement, Range rangeElement) throws MappingException {
+        if(LOGGER.isInfoEnabled())
+            try { 
+                LOGGER.info("SimpleLinkType.updateDomain " +
+                        NameUtils.getSafeName(g, domainElement) + " " +
+                        rangeElement.toString()
+                        );
+            } catch(DatabaseException e) {
+                throw new MappingException(e);
+            }
+        
+        boolean updated = false;
+        for(IBidirectionalMappingRule<Resource, Range> rule : rules)
+        	updated |= rule.updateDomain(g, map, domainElement, rangeElement);
+        return updated;
+    }
+    
+    public boolean updateRange(ReadGraph g, IForwardMapping<Resource,Range> map, Resource domainElement, Range rangeElement) throws MappingException {
+    
+        if(LOGGER.isInfoEnabled())
+            try { 
+                LOGGER.info("SimpleLinkType.updateRange " +
+                		NameUtils.getSafeName(g, domainElement) + " " +
+                        rangeElement.toString()
+                        );
+            } catch(DatabaseException e) {
+                throw new MappingException(e);
+            }
+        
+        boolean updated = false;
+        for(IBidirectionalMappingRule<Resource, Range> rule : rules)
+            updated |= rule.updateRange(g, map, domainElement, rangeElement);
+        return updated;
+    }
+}