WebSVN - OpenConcerto - Diff - Rev 142 and 156 - /trunk/OpenConcerto/src/org/openconcerto/sql/model/SQLField.java

+     *
      * @return <code>true</code> if this is part of a foreign key that has no other fields.
      * @see #getFieldGroup()
      */
     public boolean isForeignKey() {
-        final FieldGroup fieldGroup = getFieldGroup();
+        final FieldGroup fieldGroup = getContainingFieldGroup();
         return fieldGroup.getKeyType() == Type.FOREIGN_KEY && fieldGroup.getSingleField() != null;
+    }
     /**
      * To which group this field belong.
+     *
      * @return the group of this field.
      * @see SQLTable#getFieldGroups()
      */
-    public FieldGroup getFieldGroup() {
+    public FieldGroup getContainingFieldGroup() {
         return this.getTable().getFieldGroups().get(this.getName());
+    }
+    /**
+     * The group consisting of this single field.
+     *
+     * @return the group consisting of this single field.
+     * @throws IllegalStateException if this field is part of a multi-field group.
+     */
+    public FieldGroup getFieldGroup() throws IllegalStateException {
+        final FieldGroup fg = this.getTable().getFieldGroups().get(this.getName());
+        if (fg.getSingleField() == null)
+            throw new IllegalStateException(this + " is part of a group with others : " + fg);
+        return fg;
+    }
     public final SQLTable getForeignTable() {
         return this.getDBSystemRoot().getGraph().getForeignTable(this);
+    }
     public final Link getLink() {

Dépôt officiel du code source de l'ERP OpenConcerto