Changeset 213 for VirtualCollectionRegistry/trunk/VirtualCollectionRegistry/src/main/java/eu/clarin/cmdi/virtualcollectionregistry/query/EntityNode.java

Timestamp:

03/03/10 20:21:17 (14 years ago)

Author:

oschonef

Message:

• implement basic search feature

File:

• VirtualCollectionRegistry/trunk/VirtualCollectionRegistry/src/main/java/eu/clarin/cmdi/virtualcollectionregistry/query/EntityNode.java (modified) (2 diffs)

VirtualCollectionRegistry/trunk/VirtualCollectionRegistry/src/main/java/eu/clarin/cmdi/virtualcollectionregistry/query/EntityNode.java

@@ -6 +6 @@
 
 class EntityNode extends CommonTree implements ParseTreeNode {
-        private String entity;
+        public static enum Entity { VC, CREATOR };
+        private Entity entity;
         private String property;
         
         public EntityNode(int type, Token entity, Token property) {
                 super(new CommonToken(type, "ENTITY"));
-                // check values for sanity!
-                this.entity   = entity.getText();
-                this.property = property.getText();
+                this.entity    = entityFromString(entity.getText());
+                this.property  = propertyFromString(property.getText());
         }
 
-        public String getEntity() {
+        public Entity getEntity() {
                 return entity;
         }
@@ -28 +28 @@
         }
 
+        private static Entity entityFromString(String s) {
+                if (s == null) {
+                        throw new NullPointerException("s == null");
+                }
+                s = s.trim();
+                if (s.equalsIgnoreCase("vc")) {
+                         return Entity.VC;
+                } else if (s.equalsIgnoreCase("creator")) {
+                        return Entity.CREATOR;
+                } else {
+                        throw new IllegalArgumentException("unknown entity: " + s);
+                }
+        }
+
+        private static String propertyFromString(String s) {
+                if (s != null) {
+                        s = s.trim();
+                }
+                if ((s == null) || (s.length() < 1)) {
+                        throw new IllegalArgumentException("property is null or empty");
+                }
+                return s.toLowerCase();
+        }
+        
 } // class EntityNode