Das client files

[jalview.git] / src / org / biojava / dasobert / dasregistry / DasSourceComparator.java

diff --git a/src/org/biojava/dasobert/dasregistry/DasSourceComparator.java b/src/org/biojava/dasobert/dasregistry/DasSourceComparator.java
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+++ b/src/org/biojava/dasobert/dasregistry/DasSourceComparator.java
@@ -0,0 +1,140 @@
+/*
+ *                    BioJava development code
+ *
+ * This code may be freely distributed and modified under the
+ * terms of the GNU Lesser General Public Licence.  This should
+ * be distributed with the code.  If you do not have a copy,
+ * see:
+ *
+ *      http://www.gnu.org/copyleft/lesser.html
+ *
+ * Copyright for this code is held jointly by the individual
+ * authors.  These should be listed in @author doc comments.
+ *
+ * For more information on the BioJava project and its aims,
+ * or to join the biojava-l mailing list, visit the home page
+ * at:
+ *
+ *      http://www.biojava.org/
+ *
+ * Created on 15.04.2004
+ * @author Andreas Prlic
+ *
+ */
+
+
+package org.biojava.dasobert.dasregistry ;
+
+import java.util.Comparator ;
+import java.util.Map ;
+import java.util.HashMap ;
+
+
+/** a comparator to sort DasSources 
+ * @author Andreas Prlic, Thomas Down
+ */
+
+
+public abstract class DasSourceComparator
+    implements Comparator
+{ 
+
+    private final String name ;
+    private static final Map COMPS_BY_NAME;
+
+
+    public DasSourceComparator(String str) {
+       //System.out.println("new dasSourceComparator " + str);
+       name = str ;
+    }
+   
+    public static final Comparator BY_ID = new DasSourceComparator("id") {
+        protected Comparable getField(DasSource ds) {
+            return ds.getId();
+        }
+    };    
+
+    public static final Comparator BY_NICKNAME = new DasSourceComparator("nickname") {
+        protected Comparable getField(DasSource ds) {
+            return ds.getNickname();
+        }
+    };    
+    public static final Comparator BY_REGISTER_DATE = new DasSourceComparator("registerdate") {
+        protected Comparable getField(DasSource ds) {
+            return ds.getRegisterDate();
+        }
+    };
+    public static final Comparator BY_LEASE_DATE = new DasSourceComparator("leasedate") {
+        protected Comparable getField(DasSource ds) {
+            return ds.getLeaseDate();
+        }
+    };
+    public static final Comparator BY_URL = new DasSourceComparator("url") {
+        protected Comparable getField(DasSource ds) {
+            return ds.getUrl();
+        }
+    };
+    public static final Comparator BY_ADMIN_EMAIL = new DasSourceComparator("adminemail") {
+        protected Comparable getField(DasSource ds) {
+            return ds.getAdminemail();
+        }
+    };
+    public static final Comparator BY_DESCRIPTION = new DasSourceComparator("description") {
+        protected Comparable getField(DasSource ds) {
+            return ds.getDescription();
+        }
+    };
+    public static final Comparator BY_CAPABILITIES = new DasSourceComparator("capabilities") {
+        protected Comparable getField(DasSource ds) {
+            String[] caps = ds.getCapabilities();
+            return caps.length == 0 ? "" : caps[0];
+        }
+    };
+    public static final Comparator BY_COORDINATE_SYSTEM = new DasSourceComparator("coordinateSystem") {
+        protected Comparable getField(DasSource ds) {
+            DasCoordinateSystem[] dcss = ds.getCoordinateSystem();
+            return dcss.length == 0 ? "" : dcss[0].toString();
+        }
+    };
+
+    static {
+        COMPS_BY_NAME = new HashMap();
+        COMPS_BY_NAME.put(BY_ID.toString(),                BY_ID);
+        COMPS_BY_NAME.put(BY_NICKNAME.toString(),          BY_NICKNAME);
+        COMPS_BY_NAME.put(BY_REGISTER_DATE.toString(),     BY_REGISTER_DATE);
+        COMPS_BY_NAME.put(BY_LEASE_DATE.toString(),        BY_LEASE_DATE);
+        COMPS_BY_NAME.put(BY_URL.toString(),               BY_URL);
+        COMPS_BY_NAME.put(BY_ADMIN_EMAIL.toString(),       BY_ADMIN_EMAIL);
+        COMPS_BY_NAME.put(BY_DESCRIPTION.toString(),       BY_DESCRIPTION);
+        COMPS_BY_NAME.put(BY_CAPABILITIES.toString(),      BY_CAPABILITIES);
+        COMPS_BY_NAME.put(BY_COORDINATE_SYSTEM.toString(), BY_COORDINATE_SYSTEM);
+    }
+
+   
+
+    public static Comparator fromString(String name) {
+        if (COMPS_BY_NAME.containsKey(name)) {
+            return (Comparator) COMPS_BY_NAME.get(name);
+        } else {
+            throw new IllegalArgumentException("Can't compare by key " + name);
+        }
+    }
+
+    protected abstract Comparable getField(DasSource ds);
+
+    /** compare two DasSource objects */
+    public int compare( Object a, Object b) {
+        
+        DasSource x = (DasSource) a ;
+        DasSource y = (DasSource) b ;
+        return getField(x).compareTo(getField(y));
+    }
+
+    public String toString() {
+        return name;
+    }
+
+
+}
+
+