1 files changed, 124 insertions, 0 deletions
diff --git a/branches/sca-java-1.3.3/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/TuscanyNamespaceContext.java b/branches/sca-java-1.3.3/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/TuscanyNamespaceContext.java
new file mode 100644
index 0000000000..8b1e40cee9
--- /dev/null
+++ b/branches/sca-java-1.3.3/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/TuscanyNamespaceContext.java
@@ -0,0 +1,124 @@
+package org.apache.tuscany.sca.contribution.processor;
+
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.Stack;
+
+import javax.xml.XMLConstants;
+import javax.xml.namespace.NamespaceContext;
+
+@SuppressWarnings("unused")
+public class TuscanyNamespaceContext implements NamespaceContext {
+
+	private Stack<ArrayList<ArrayList<String>>> context = null;
+
+	public TuscanyNamespaceContext(Stack<ArrayList<ArrayList<String>>> context){
+		this.context = context;
+	}
+
+	public String getNamespaceURI(String prefix) {
+		if (prefix == null) {
+			throw new IllegalArgumentException();
+		}
+		return (String) getResult("getNSUri",prefix);
+	}
+
+	public String getPrefix(String namespaceURI) {
+		if (namespaceURI == null) {
+			throw new IllegalArgumentException();
+		}
+		return (String) getResult("getPrefix",namespaceURI);
+	}
+
+	@SuppressWarnings("unchecked")
+	public Iterator<String> getPrefixes(String namespaceURI) {
+		if (namespaceURI == null) {
+			throw new IllegalArgumentException();
+		}
+		
+		Iterator<String> iterator = new Itr<String>((Iterator<String>) getResult("getPrefixes",namespaceURI));
+		return iterator;
+	}
+	
+	/*
+	 * Generic method to Iterate through the Stack and return required result(s) 
+	 */
+	private Object getResult(String operation,String arg){
+		
+		ArrayList<ArrayList<String>> contextList = null;
+		Iterator<String> prefItr = null;
+		Iterator<String> uriItr = null;
+		
+		List<String> list = new ArrayList<String>();;
+		
+		String toCompare = null;
+		
+		String tempPrefix = null;
+		String tempUri = null ;
+		
+		for(int i  = context.size()-1; i>=0;i--){
+			contextList = context.get(i);
+			prefItr = ((ArrayList<String>)contextList.get(0)).iterator();
+			uriItr = ((ArrayList<String>)contextList.get(1)).iterator();
+			for(int j = 0;uriItr.hasNext();j++){
+				tempPrefix = (String) prefItr.next();
+				tempUri = (String) uriItr.next();
+				if(operation.equalsIgnoreCase("getNSUri")){
+					toCompare = tempPrefix;
+				}
+				else if(operation.equalsIgnoreCase("getPrefix")){
+					toCompare = tempUri;
+				}
+				else if(operation.equalsIgnoreCase("getPrefixes")){
+					toCompare = tempUri;
+				}
+				if(toCompare != null && arg.equalsIgnoreCase(toCompare)){
+					if(operation.equalsIgnoreCase("getNSUri")){
+						return tempUri;
+					}
+					else if(operation.equalsIgnoreCase("getPrefix")){
+						return tempPrefix;
+					}
+					else if(operation.equalsIgnoreCase("getPrefixes")){
+						list.add(tempPrefix);
+						
+					}
+					
+				}
+			}
+		}
+		
+		if(operation.equalsIgnoreCase("getPrefixes")){
+			return list.iterator();
+		}
+		
+		return null;
+	}
+
+	/*
+	 * Custom implementation of the Iterator interface to override the behavior of the remove() method.
+	 * The iterator should not be modifiable and invocation of the remove() method should throw UnsupportedOperationException. 
+	 */
+	private class Itr<E> implements Iterator<E>{
+		Iterator<E> iterator = null;
+
+		Itr(Iterator<E> inputItr){
+			this.iterator = inputItr;
+		}
+		
+		public boolean hasNext() {
+			return this.iterator.hasNext();
+		}
+
+		public E next() {
+			return (E) this.iterator.next();
+		}
+
+		public void remove() {
+			throw new  UnsupportedOperationException();
+		}
+	} //end of class Itr<E>
+	
+	
+} //end of Class