1 files changed, 65 insertions, 0 deletions
diff --git a/src/com/isode/stroke/parser/GenericPayloadTreeParser.java b/src/com/isode/stroke/parser/GenericPayloadTreeParser.java
new file mode 100644
index 0000000..e414ac5
--- /dev/null
+++ b/src/com/isode/stroke/parser/GenericPayloadTreeParser.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2012, Isode Limited, London, England.
+ * All rights reserved.
+ */
+/*
+ * Copyright (c) 2011, Kevin Smith
+ * All rights reserved.
+ */
+package com.isode.stroke.parser;
+
+import java.util.LinkedList;
+
+import com.isode.stroke.elements.Payload;
+import com.isode.stroke.parser.tree.ParserElement;
+
+/** 
+ * Generic parser offering something a bit like a DOM to work with
+ * @param <T> Payload Type to parse
+ */
+public abstract class GenericPayloadTreeParser<T extends Payload> extends GenericPayloadParser<T> {
+
+    private LinkedList<ParserElement> elementStack_ = new LinkedList<ParserElement>(); 
+    private ParserElement root_;
+
+    /**
+     * Create the parser for the given payload type
+     * @param payload payload type object, not null
+     */
+    public GenericPayloadTreeParser(T payload) {
+        super(payload);
+    }
+
+    @Override
+    public void handleCharacterData(String data) {
+        ParserElement current = elementStack_.getLast();
+        current.appendCharacterData(data);
+    }
+
+    @Override
+    public void handleEndElement(String element, String xmlns) {
+        elementStack_.removeLast();
+        if (elementStack_.isEmpty()) {
+            handleTree(root_);
+        }
+    }
+
+    @Override
+    public void handleStartElement(String element, String xmlns,
+            AttributeMap attributes) {
+        if (root_ == null) {
+            root_ = new ParserElement(element, xmlns, attributes);
+            elementStack_.addLast(root_);
+        }else {            
+            ParserElement current = elementStack_.getLast();
+            elementStack_.addLast(current.addChild(element, xmlns, attributes));
+        }
+    }
+    
+    /**
+     * Parse children of the root element. Subclasses should implement
+     * this method to extract the items from child nodes
+     * @param root root of the node whose children contains items
+     */
+    public abstract void handleTree(ParserElement root);
+}