Initial check-in of demo implementation of IPathElement interface

src/helma/framework/demo/SimplePathElement.java

@@ -0,0 +1,74 @@
+// SimplePathElement.java
+// Copyright Hannes Wallnöfer 2001
+
+package helma.framework.demo;
+
+import helma.framework.IPathElement;
+
+/**
+ * This is an example implementation for the helma.framework.IPathElement interface.
+ * It creates any child element which is requested on the fly without ever asking.
+ */
+
+public class SimplePathElement implements IPathElement {
+
+    String name;
+    String prototype;
+    IPathElement parent;
+
+    /**
+     *  Constructor for the root element.
+     */
+    public SimplePathElement () {
+	name = "root";
+	prototype = "root";
+	parent = null;
+    }
+
+    /**
+     * Constructor for non-root elements.
+     */
+    public SimplePathElement (String n, IPathElement p) {
+	name = n;
+	prototype = "hopobject";
+	parent = p;
+    }
+
+    /**
+     * Returns a child element for this object, creating it on the fly.
+     */
+    public IPathElement getChildElement (String n) {
+	return new SimplePathElement (n, this);
+    }
+
+    /**
+     * Returns this object's parent element
+     */
+    public IPathElement getParentElement () {
+	return parent;
+    }
+
+    /**
+     * Returns the element name to be used for this object.
+     */
+    public String getElementName () {
+	return name;
+    }
+
+    /**
+     * Returns the name of the scripting prototype to be used for this object.
+     * This will be "root" for the root element and "hopobject for everything else.
+     */
+    public String getPrototype () {
+	return prototype;
+    }
+
+    /**
+     * Returns a string representation of this element.
+     */
+    public String toString () {
+	return "SimplePathElement "+name;
+    }
+
+}
+