+/*
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
+ *
+ * This file is part of Jalview.
+ *
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *
+ * Jalview is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
package jalview.io.gff;
-import jalview.bin.Cache;
-import jalview.ext.so.SequenceOntology;
+import jalview.bin.ApplicationSingletonProvider;
+import jalview.bin.ApplicationSingletonProvider.ApplicationSingletonI;
/**
- * A factory class that returns a model of the Sequence Ontology. If the user's
- * Jalview properties file has the line <br>
- * USE_SO_LITE = true <br>
- * then a hard-coded subset will be used, otherwise the full ontology (as
- * downloaded at a point in time).
+ * A factory class that returns a model of the Sequence Ontology. By default a
+ * hard-coded subset is used (for the applet, or testing), or
+ * setSequenceOntology() can be used to set full Ontology data.
*
* @author gmcarstairs
*
*/
-public class SequenceOntologyFactory
+public class SequenceOntologyFactory implements ApplicationSingletonI
{
- private static SequenceOntologyI instance;
+ /**
+ * Answers an instance of this class for the current application context. Note
+ * that this supports running two JS 'applets' on the same page, one with the
+ * full Sequence Ontology (USE_FULL_SO = true) and one with a hard-coded
+ * subset (USE_FULL_SO = false). If this is overkill, could change this method
+ * to just return a common static instance.
+ *
+ * @return
+ */
+ private static synchronized SequenceOntologyFactory getInstance()
+ {
+ return (SequenceOntologyFactory) ApplicationSingletonProvider
+ .getInstance(SequenceOntologyFactory.class);
+ }
- public static synchronized SequenceOntologyI getInstance()
+ /**
+ * Answers the configured model of the Sequence Ontology.
+ *
+ * @return
+ */
+ public static synchronized SequenceOntologyI getSequenceOntology()
{
- if (instance == null)
- {
- if (Cache.getDefault("USE_SO_LITE", false))
- {
- instance = new SequenceOntologyLite();
- }
- else
- {
- instance = new SequenceOntology();
- }
- }
- return instance;
+ SequenceOntologyFactory f = getInstance();
+ return (f.sequenceOntology == null
+ ? f.sequenceOntology = new SequenceOntologyLite()
+ : f.sequenceOntology);
}
- public static void setInstance(SequenceOntologyI so)
+ /**
+ * For testng only
+ *
+ * @param so
+ */
+ public static void setSequenceOntology(SequenceOntologyI so)
{
- instance = so;
+ getInstance().sequenceOntology = so;
}
+
+ private SequenceOntologyI sequenceOntology;
+
+ private SequenceOntologyFactory()
+ {
+ // private singleton
+ }
+
}