Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.document.linking.ui / src / org / simantics / document / linking / report / evaluator / If.java

diff --git a/bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/report/evaluator/If.java b/bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/report/evaluator/If.java
new file mode 100644 (file)
index 0000000..2ac3620
--- /dev/null
+++ b/bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/report/evaluator/If.java
@@ -0,0 +1,89 @@
+package org.simantics.document.linking.report.evaluator;\r
+\r
+import java.util.Collections;\r
+import java.util.List;\r
+import java.util.Map;\r
+\r
+import org.eclipse.jface.resource.ImageDescriptor;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.document.linking.Activator;\r
+import org.simantics.document.linking.ontology.DocumentLink;\r
+import org.simantics.document.linking.report.DocumentLine;\r
+import org.simantics.objmap.graph.annotations.OrderedSetType;\r
+\r
+/**\r
+ * Checks that the first size does not return null or "false". \r
+ * Depending on results evaluates the second child or the third (if it exists).\r
+ * \r
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
+ *\r
+ */\r
+@OrderedSetType(DocumentLink.URIs.EvaluatorTree_If)\r
+public class If extends EvaluatorNode{\r
+\r
+       @Override\r
+       public String getValue(ReadGraph graph, Variable variable, Map<Object, Object> context) throws DatabaseException {\r
+               if (children.size() > 3)\r
+                       throw new DatabaseException("If node has more than 3 children.");\r
+               \r
+               String ifVal = children.get(0).getValue(graph, variable, context);\r
+               if (ifVal != null && ifVal.length() > 0 && !Boolean.FALSE.toString().equals(ifVal)) {\r
+                       return children.get(1).getValue(graph, variable, context);\r
+               } else if (children.size() == 3) {\r
+                       return children.get(2).getValue(graph, variable, context);\r
+               }\r
+               return null;\r
+       }\r
+       \r
+       @Override\r
+       public List<DocumentLine> getLines(ReadGraph graph,     Variable variable, Map<Object, Object> context) throws DatabaseException {\r
+               if (children.size() > 3)\r
+                       throw new DatabaseException("If node has more than 3 children.");\r
+               String ifVal = children.get(0).getValue(graph, variable, context);\r
+               if (ifVal != null && ifVal.length() > 0 && !Boolean.FALSE.toString().equals(ifVal)) {\r
+                       return children.get(1).getLines(graph, variable, context);\r
+               } else if (children.size() == 3) {\r
+                       return children.get(2).getLines(graph, variable, context);\r
+               }\r
+               return Collections.emptyList();\r
+       }\r
+       \r
+\r
+       @Override\r
+       public String toString() {\r
+               return "if";\r
+       }\r
+       \r
+       @Override\r
+       public List<Class<? extends EvaluatorItem>> getPossibleChildren(boolean add) {\r
+               if (add && children.size() == 3)\r
+                       return Collections.emptyList();\r
+               return super.getPossibleChildren(add);\r
+       }\r
+       \r
+       @Override\r
+       public EvaluatorItem copy() {\r
+               If node = new If();\r
+               copyChildren(node);\r
+               return node;\r
+               \r
+       }\r
+       \r
+       @Override\r
+       public ImageDescriptor getImage() {\r
+               return Activator.imageDescriptorFromPlugin("com.famfamfam.silk", "icons/help.png");\r
+       }\r
+       \r
+       @Override\r
+       public boolean acceptChild(EvaluatorItem item) {\r
+               return children.size() < 3;\r
+       }\r
+       \r
+       @Override\r
+       public boolean acceptChild(int index, EvaluatorItem item) {\r
+               return children.size() < 3;\r
+       }\r
+\r
+}\r