+package org.simantics.graph.query;\r
+\r
+import java.io.IOException;\r
+import java.util.Collection;\r
+\r
+import org.simantics.databoard.binding.Binding;\r
+import org.simantics.databoard.binding.error.BindingException;\r
+import org.simantics.databoard.binding.mutable.Variant;\r
+import org.simantics.databoard.serialization.RuntimeSerializerConstructionException;\r
+import org.simantics.databoard.serialization.SerializationException;\r
+import org.simantics.databoard.type.Datatype;\r
+\r
+/**\r
+ * Graph browsing interface for transferable graphs.\r
+ * @author Hannu Niemist�\r
+ */\r
+public interface IGraph {\r
+\r
+ /**\r
+ * Get value of the resource as variant. Returns null, if there is no value.\r
+ */\r
+ Variant getValue(Res resource);\r
+\r
+ /**\r
+ * Sets value of the resource.\r
+ */\r
+ void setValue(Res resource, Object value, Binding binding);\r
+\r
+ /**\r
+ * Gets the value of the resource using the given binding.\r
+ */\r
+ Object getValue(Res resource, Binding binding) throws RuntimeSerializerConstructionException, SerializationException, IOException, BindingException, NoValueException;\r
+ \r
+ /**\r
+ * Gets the data type of the resource or null if it doesn't have a data type.\r
+ */\r
+ Datatype getDatatype(Res resource);\r
+ \r
+ /**\r
+ * Gets raw objects without assertions\r
+ */\r
+ Collection<Res> rawGetObjects(Res subject, Res predicate);\r
+ \r
+ /**\r
+ * Gets single raw object or throws NoUniqueObjectException if that is not possible\r
+ */\r
+ Res singleRawObject(Res subject, Res predicate) throws NoUniqueObjectException;\r
+\r
+ /**\r
+ * Gets raw and asserted objects.\r
+ */\r
+ Collection<Res> getObjects(Res subject, Res predicate);\r
+ \r
+ /**\r
+ * Gets all types of the given resource\r
+ */\r
+ Collection<Res> getTypes(Res resource); \r
+ \r
+ /**\r
+ * Gets all instances of the given type\r
+ */\r
+ Collection<Res> getInstances(Res type);\r
+\r
+ Datatype getAssertedDatatype(Res type);\r
+ \r
+ Collection<Res> getChildren(Res res);\r
+ \r
+ Paths getPaths(); \r
+\r
+}\r