Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.databoard / src / org / simantics / databoard / Units.java

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/Units.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/Units.java
new file mode 100644 (file)
index 0000000..e1717fe
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/Units.java
@@ -0,0 +1,48 @@
+/*******************************************************************************\r
+ *  Copyright (c) 2010 Association for Decentralized Information Management in\r
+ *  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.databoard;
+
+import org.simantics.databoard.units.ConverterCreator;\r
+import org.simantics.databoard.units.IUnitConverter;\r
+import org.simantics.databoard.units.IdentityConverter;\r
+import org.simantics.databoard.units.internal.UnitParseException;\r
+import org.simantics.databoard.units.internal.library.UnitLibrary;\r
+
+public class Units {
+
+       public static UnitLibrary library = UnitLibrary.createDefault();
+       
+       /**
+        * Create converter
+        * 
+        * @param sourceUnit
+        * @param targetUnit
+        * @return the converter
+        * @throws UnitParseException
+        */
+       public static IUnitConverter createConverter(String sourceUnit, String targetUnit) throws UnitParseException {
+               if(sourceUnit.equals(targetUnit))
+                       return IdentityConverter.INSTANCE;
+               ConverterCreator creator = new ConverterCreator(library);
+               creator.unit(sourceUnit, 1);
+               creator.unit(targetUnit, -1);
+               return creator.createConverter();
+       }       
+       
+       public static double convert(double value, String sourceUnit, String targetUnit) throws UnitParseException {
+               IUnitConverter c = createConverter(sourceUnit, targetUnit);
+               if (c==null) throw new UnitParseException(sourceUnit+" or "+targetUnit, "could not convert");
+               return c.convert(value);
+       }
+
+       
+}