1 files changed, 132 insertions, 0 deletions
diff --git a/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/designtime/internal/resources/ResourceFragmentIdentifier.java b/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/designtime/internal/resources/ResourceFragmentIdentifier.java
new file mode 100644
index 000000000..db87d34d5
--- /dev/null
+++ b/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/designtime/internal/resources/ResourceFragmentIdentifier.java
@@ -0,0 +1,132 @@
+package org.eclipse.jst.jsf.designtime.internal.resources;
+
+import org.eclipse.core.runtime.IStatus;
+
+/**
+ * Represents a piece of a resource identifier.
+ * 
+ * [localePrefix/][libraryName/][libraryVersion/][resourceName][/resourceVersion]
+ * 
+ * @author cbateman
+ *
+ */
+public abstract class ResourceFragmentIdentifier
+{
+
+    /**
+     * @return true if validate().isOk
+     */
+    public boolean isValid()
+    {
+        return validate().isOK();
+    }
+
+    /**
+     * @return a validation status for the current value of this identifier
+     */
+    public abstract IStatus validate();
+
+    /**
+     * @return the resource name or null if none.
+     */
+    public String getResourceName()
+    {
+        return null;
+    }
+
+    /**
+     * @return the locale prefix or null if none.
+     */
+    public String getLocalePrefix()
+    {
+        return null;
+    }
+
+    /**
+     * @return the library name or null if none.
+     */
+    public String getLibraryName()
+    {
+        return null;
+    }
+
+    /**
+     * @return the library version or null if none.
+     */
+    public String getLibraryVersion()
+    {
+        return null;
+    }
+
+    /**
+     * @return the resource version or null if none.
+     */
+    public String getResourceVersion()
+    {
+        return null;
+    }
+
+    @Override
+    public boolean equals(Object obj)
+    {
+        if (super.equals(obj))
+        {
+            return true;
+        }
+    
+        if (obj instanceof ResourceIdentifier)
+        {
+            String meToString = toString();
+            String otherToString = obj.toString();
+            return meToString != null && meToString.equals(otherToString);
+        }
+        return false;
+    }
+
+    @Override
+    public int hashCode()
+    {
+        String toString = toString();
+        return toString != null ? toString.hashCode() : 0;
+    }
+
+    
+    @Override
+    public String toString()
+    {
+        String toString = ""; //$NON-NLS-1$
+        
+        toString = append(toString, getLocalePrefix());
+        toString = append(toString, getLibraryName());
+        toString = append(toString, getLibraryVersion());
+        toString = append(toString, getResourceName());
+        toString = append(toString, getResourceVersion());
+        return toString;
+    }
+
+    /**
+     * @param appendStr
+     * @param toAppend
+     * @return a string with to toAppend appended to appendStr if it is not null.
+     * If appendStr is not append, a '/' is added between the two concatenated strings.
+     */
+    protected String append(String appendStr, final String toAppend)
+    {
+        if (toAppend != null)
+        {
+            if (appendStr.length() > 0)
+            {
+                appendStr += "/"; //$NON-NLS-1$
+            }
+            appendStr += toAppend;
+        }
+        return appendStr;
+    }
+    /**
+     * @return true if this identifier represents only a fragment of an identifier.
+     */
+    public boolean isFragment()
+    {
+        return true;
+    }
+}