Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.objmap2 / src / org / simantics / objmap / graph / schema / SimpleLinkType.java

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 (file)
index 0000000..880d117
--- /dev/null
+++ b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/schema/SimpleLinkType.java
@@ -0,0 +1,140 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2013 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.objmap.graph.schema;\r
+\r
+import java.util.ArrayList;\r
+\r
+import org.apache.log4j.Logger;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.utils.NameUtils;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.objmap.backward.IBackwardMapping;\r
+import org.simantics.objmap.bidirectional.IBidirectionalMappingRule;\r
+import org.simantics.objmap.exceptions.MappingException;\r
+import org.simantics.objmap.forward.IForwardMapping;\r
+\r
+\r
+/**\r
+ * A link type that is associated with single domain and range type (class).\r
+ * SimpleLinkType is composed of simpler rules whose combination determines\r
+ * its update policy.\r
+ * @author Hannu Niemist�\r
+ */\r
+public class SimpleLinkType<Range> implements ILinkType<Resource,Range> {\r
+    \r
+    static Logger LOGGER = Logger.getLogger("org.simantics.objmap");\r
+    \r
+    public Resource domainType;\r
+    public Class<?> rangeType;\r
+    ArrayList<IBidirectionalMappingRule<Resource, Range>> rules;\r
+    \r
+    public SimpleLinkType(Resource domainType, Class<?> rangeType,\r
+            ArrayList<IBidirectionalMappingRule<Resource, Range>> rules) {\r
+        this.domainType = domainType;\r
+        this.rangeType = rangeType;\r
+        this.rules = rules;\r
+    }\r
+\r
+    public SimpleLinkType(Resource domainType, Class<?> rangeType) {\r
+        this(domainType, rangeType, new ArrayList<IBidirectionalMappingRule<Resource, Range>>());\r
+    }\r
+\r
+    /**\r
+     * Adds a new rule to this link type that is enforced\r
+     * during updates.\r
+     */\r
+    public void addRule(IBidirectionalMappingRule<Resource, Range> rule) {\r
+        rules.add(rule);\r
+    }\r
+    \r
+    @Override\r
+    public Resource createDomainElement(WriteGraph g, Range rangeElement)\r
+            throws MappingException {\r
+        try {\r
+            if(LOGGER.isInfoEnabled())\r
+                LOGGER.info("SimpleLinkType.createDomainElement " +\r
+                        rangeElement.toString()\r
+                );\r
+            Resource result = g.newResource();\r
+            g.claim(result, Layer0.getInstance(g).InstanceOf, null, domainType);\r
+            return result;\r
+        } catch(DatabaseException e) {\r
+            throw new MappingException(e);\r
+        }\r
+    }\r
+    @SuppressWarnings("unchecked")\r
+       @Override\r
+    public Range createRangeElement(ReadGraph g, Resource domainElement)\r
+            throws MappingException {\r
+        try {\r
+            if(LOGGER.isInfoEnabled())\r
+                try { \r
+                    LOGGER.info("SimpleLinkType.createRangeElement " +\r
+                               NameUtils.getSafeName(g, domainElement)\r
+                            );\r
+                } catch(DatabaseException e) {\r
+                    throw new MappingException(e);\r
+                }\r
+            return (Range)rangeType.newInstance();\r
+        } catch (InstantiationException e) {\r
+            throw new MappingException(e);\r
+        } catch (IllegalAccessException e) {\r
+            throw new MappingException(e);\r
+        }\r
+    }\r
+    \r
+    public void createDomain(WriteGraph graph, IBackwardMapping<Resource,Range> mapping, Resource domainElement, Range rangeElement) throws MappingException {\r
+       updateDomain(graph, mapping, domainElement, rangeElement);\r
+    };\r
+    \r
+    public void createRange(ReadGraph graph, org.simantics.objmap.forward.IForwardMapping<Resource,Range> mapping, Resource domainElement, Range rangeElement) throws MappingException {\r
+       updateRange(graph, mapping, domainElement, rangeElement);\r
+    };\r
+    \r
+    public boolean updateDomain(WriteGraph g, IBackwardMapping<Resource,Range> map, Resource domainElement, Range rangeElement) throws MappingException {\r
+        if(LOGGER.isInfoEnabled())\r
+            try { \r
+                LOGGER.info("SimpleLinkType.updateDomain " +\r
+                        NameUtils.getSafeName(g, domainElement) + " " +\r
+                        rangeElement.toString()\r
+                        );\r
+            } catch(DatabaseException e) {\r
+                throw new MappingException(e);\r
+            }\r
+        \r
+        boolean updated = false;\r
+        for(IBidirectionalMappingRule<Resource, Range> rule : rules)\r
+               updated |= rule.updateDomain(g, map, domainElement, rangeElement);\r
+        return updated;\r
+    }\r
+    \r
+    public boolean updateRange(ReadGraph g, IForwardMapping<Resource,Range> map, Resource domainElement, Range rangeElement) throws MappingException {\r
+    \r
+        if(LOGGER.isInfoEnabled())\r
+            try { \r
+                LOGGER.info("SimpleLinkType.updateRange " +\r
+                               NameUtils.getSafeName(g, domainElement) + " " +\r
+                        rangeElement.toString()\r
+                        );\r
+            } catch(DatabaseException e) {\r
+                throw new MappingException(e);\r
+            }\r
+        \r
+        boolean updated = false;\r
+        for(IBidirectionalMappingRule<Resource, Range> rule : rules)\r
+            updated |= rule.updateRange(g, map, domainElement, rangeElement);\r
+        return updated;\r
+    }\r
+}\r