1 files changed, 279 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/common-xml/src/main/java/org/apache/tuscany/sca/common/xml/stax/reader/NilElementStreamReader.java b/sca-java-2.x/tags/2.0.1-RC1/modules/common-xml/src/main/java/org/apache/tuscany/sca/common/xml/stax/reader/NilElementStreamReader.java
new file mode 100644
index 0000000000..cee70f64df
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/common-xml/src/main/java/org/apache/tuscany/sca/common/xml/stax/reader/NilElementStreamReader.java
@@ -0,0 +1,279 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.common.xml.stax.reader;
+
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.namespace.QName;
+import javax.xml.stream.Location;
+import javax.xml.stream.XMLStreamException;
+
+public class NilElementStreamReader implements XMLFragmentStreamReader {
+
+    private static final int END_ELEMENT_STATE = 2;
+
+    private static final int START_ELEMENT_STATE = 1;
+    private int currentState = START_ELEMENT;
+
+    private QName elementQName;
+
+    public NilElementStreamReader(QName elementQName) {
+        this.elementQName = elementQName;
+    }
+
+    public void setParentNamespaceContext(NamespaceContext nsContext) {
+        // NOOP
+    }
+
+    public void close() throws XMLStreamException {
+        // do nothing
+    }
+
+    public int getAttributeCount() {
+        return 1;
+    }
+
+    public String getAttributeLocalName(int i) {
+        return (i == 0) ? NIL_QNAME.getLocalPart() : null;
+    }
+
+    public QName getAttributeName(int i) {
+        return (i == 0) ? NIL_QNAME : null;
+    }
+
+    public String getAttributeNamespace(int i) {
+        return (i == 0) ? NIL_QNAME.getNamespaceURI() : null;
+    }
+
+    public String getAttributePrefix(int i) {
+        return (i == 0) ? NIL_QNAME.getPrefix() : null;
+    }
+
+    public String getAttributeType(int i) {
+        throw new UnsupportedOperationException();
+    }
+
+    public String getAttributeValue(int i) {
+        return (i == 0) ? NIL_VALUE_TRUE : null;
+    }
+
+    public String getAttributeValue(String string, String string1) {
+        if (string == null && NIL_QNAME.getLocalPart().equals(string1)) {
+            return NIL_VALUE_TRUE;
+        }
+        return null;
+    }
+
+    public String getCharacterEncodingScheme() {
+        throw new UnsupportedOperationException();
+    }
+
+    public String getElementText() throws XMLStreamException {
+        return null;
+    }
+
+    public String getEncoding() {
+        return null;
+    }
+
+    public int getEventType() {
+        int returnEvent = START_DOCUMENT;
+        switch (currentState) {
+            case START_ELEMENT_STATE:
+                returnEvent = START_ELEMENT;
+                break;
+            case END_ELEMENT_STATE:
+                returnEvent = END_ELEMENT;
+                break;
+        }
+        return returnEvent;
+    }
+
+    public String getLocalName() {
+        return elementQName.getLocalPart();
+    }
+
+    public Location getLocation() {
+        return new Location() {
+            public int getCharacterOffset() {
+                return 0;
+            }
+
+            public int getColumnNumber() {
+                return 0;
+            }
+
+            public int getLineNumber() {
+                return 0;
+            }
+
+            public String getPublicId() {
+                return null;
+            }
+
+            public String getSystemId() {
+                return null;
+            }
+        };
+    }
+
+    public QName getName() {
+        return elementQName;
+    }
+
+    public NamespaceContext getNamespaceContext() {
+        throw new UnsupportedOperationException();
+    }
+
+    public int getNamespaceCount() {
+        return 0;
+    }
+
+    public String getNamespacePrefix(int i) {
+        return null;
+    }
+
+    public String getNamespaceURI() {
+        return elementQName.getNamespaceURI();
+    }
+
+    public String getNamespaceURI(int i) {
+        return null;
+    }
+
+    public String getNamespaceURI(String string) {
+        if (elementQName.getPrefix() != null && elementQName.getPrefix().equals(string)) {
+            return elementQName.getNamespaceURI();
+        } else {
+            return null;
+        }
+    }
+
+    public String getPIData() {
+        throw new UnsupportedOperationException();
+    }
+
+    public String getPITarget() {
+        throw new UnsupportedOperationException();
+    }
+
+    public String getPrefix() {
+        return elementQName.getPrefix();
+    }
+
+    public Object getProperty(String key) throws IllegalArgumentException {
+        // since optimization is a global property
+        // we've to implement it everywhere
+        return null;
+    }
+
+    public String getText() {
+        return null;
+    }
+
+    public char[] getTextCharacters() {
+        return new char[0]; 
+    }
+
+    public int getTextCharacters(int i, char[] chars, int i1, int i2) throws XMLStreamException {
+        return 0;
+    }
+
+    public int getTextLength() {
+        return 0;
+    }
+
+    public int getTextStart() {
+        return 0;
+    }
+
+    public String getVersion() {
+        throw new UnsupportedOperationException();
+    }
+
+    public boolean hasName() {
+        return true;
+    }
+
+    public boolean hasNext() throws XMLStreamException {
+        return currentState != END_ELEMENT_STATE;
+
+    }
+
+    public boolean hasText() {
+        return false;
+    }
+
+    public void init() {
+        // NOOP
+    }
+
+    public boolean isAttributeSpecified(int i) {
+        return i == 0;
+    }
+
+    public boolean isCharacters() {
+        return false;
+    }
+
+    public boolean isDone() {
+        return currentState == END_ELEMENT_STATE;
+    }
+
+    public boolean isEndElement() {
+        return currentState == END_ELEMENT_STATE;
+    }
+
+    public boolean isStandalone() {
+        throw new UnsupportedOperationException();
+    }
+
+    public boolean isStartElement() {
+        return currentState == START_ELEMENT_STATE;
+    }
+
+    public boolean isWhiteSpace() {
+        return false;
+    }
+
+    public int next() throws XMLStreamException {
+        int returnEvent = START_DOCUMENT;
+        switch (currentState) {
+            case START_ELEMENT_STATE:
+                currentState = END_ELEMENT_STATE;
+                returnEvent = END_ELEMENT;
+                break;
+            case END_ELEMENT_STATE:
+                throw new XMLStreamException("parser completed!");
+
+        }
+        return returnEvent;
+    }
+
+    public int nextTag() throws XMLStreamException {
+        throw new UnsupportedOperationException();
+    }
+
+    public void require(int i, String string, String string1) throws XMLStreamException {
+        // nothing
+    }
+
+    public boolean standaloneSet() {
+        throw new UnsupportedOperationException();
+    }
+}