X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.document.linking.ui%2Fsrc%2Forg%2Fsimantics%2Fdocument%2Flinking%2Freport%2Fevaluator%2FIf.java;fp=bundles%2Forg.simantics.document.linking.ui%2Fsrc%2Forg%2Fsimantics%2Fdocument%2Flinking%2Freport%2Fevaluator%2FIf.java;h=2ac3620f83dbc9c811f7e35327b204a648ffc9fd;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

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
index 000000000..2ac3620f8
--- /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;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.variable.Variable;
+import org.simantics.document.linking.Activator;
+import org.simantics.document.linking.ontology.DocumentLink;
+import org.simantics.document.linking.report.DocumentLine;
+import org.simantics.objmap.graph.annotations.OrderedSetType;
+
+/**
+ * Checks that the first size does not return null or "false". 
+ * Depending on results evaluates the second child or the third (if it exists).
+ * 
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
+ *
+ */
+@OrderedSetType(DocumentLink.URIs.EvaluatorTree_If)
+public class If extends EvaluatorNode{
+
+	@Override
+	public String getValue(ReadGraph graph, Variable variable, Map<Object, Object> context) throws DatabaseException {
+		if (children.size() > 3)
+			throw new DatabaseException("If node has more than 3 children.");
+		
+		String ifVal = children.get(0).getValue(graph, variable, context);
+		if (ifVal != null && ifVal.length() > 0 && !Boolean.FALSE.toString().equals(ifVal)) {
+			return children.get(1).getValue(graph, variable, context);
+		} else if (children.size() == 3) {
+			return children.get(2).getValue(graph, variable, context);
+		}
+		return null;
+	}
+	
+	@Override
+	public List<DocumentLine> getLines(ReadGraph graph,	Variable variable, Map<Object, Object> context) throws DatabaseException {
+		if (children.size() > 3)
+			throw new DatabaseException("If node has more than 3 children.");
+		String ifVal = children.get(0).getValue(graph, variable, context);
+		if (ifVal != null && ifVal.length() > 0 && !Boolean.FALSE.toString().equals(ifVal)) {
+			return children.get(1).getLines(graph, variable, context);
+		} else if (children.size() == 3) {
+			return children.get(2).getLines(graph, variable, context);
+		}
+		return Collections.emptyList();
+	}
+	
+
+	@Override
+	public String toString() {
+		return "if";
+	}
+	
+	@Override
+	public List<Class<? extends EvaluatorItem>> getPossibleChildren(boolean add) {
+		if (add && children.size() == 3)
+			return Collections.emptyList();
+		return super.getPossibleChildren(add);
+	}
+	
+	@Override
+	public EvaluatorItem copy() {
+		If node = new If();
+		copyChildren(node);
+		return node;
+		
+	}
+	
+	@Override
+	public ImageDescriptor getImage() {
+		return Activator.imageDescriptorFromPlugin("com.famfamfam.silk", "icons/help.png");
+	}
+	
+	@Override
+	public boolean acceptChild(EvaluatorItem item) {
+		return children.size() < 3;
+	}
+	
+	@Override
+	public boolean acceptChild(int index, EvaluatorItem item) {
+		return children.size() < 3;
+	}
+
+}