1 files changed, 348 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/NameValuePairStreamReader.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/NameValuePairStreamReader.java
new file mode 100644
index 0000000000..4abf9b3dcf
--- /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/NameValuePairStreamReader.java
@@ -0,0 +1,348 @@
+/*
+ * 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 NameValuePairStreamReader implements XMLFragmentStreamReader {
+
+    private static final int START_ELEMENT_STATE = 0;
+    private static final int TEXT_STATE = 1;
+    private static final int END_ELEMENT_STATE = 2;
+
+    private DelegatingNamespaceContext namespaceContext = new DelegatingNamespaceContext();
+
+    private QName name;
+    private String value;
+
+    private int state = START_ELEMENT_STATE;
+    // initiate at the start element state
+
+    // keeps track whether the namespace is declared
+    // false by default
+    private boolean nsDeclared;
+
+    public NameValuePairStreamReader(QName name, String value) {
+        this.name = name;
+        this.value = value;
+    }
+
+    public Object getProperty(String key) throws IllegalArgumentException {
+        return null;
+    }
+
+    public int next() throws XMLStreamException {
+        // no need to handle null here. it should have been handled
+        // already
+        switch (state) {
+            case START_ELEMENT_STATE:
+                state = TEXT_STATE;
+                return CHARACTERS;
+            case END_ELEMENT_STATE:
+                // oops, not supposed to happen!
+                throw new XMLStreamException("end already reached!");
+            case TEXT_STATE:
+                state = END_ELEMENT_STATE;
+                return END_ELEMENT;
+            default:
+                throw new XMLStreamException("unknown event type!");
+        }
+    }
+
+    public void require(int i, String string, String string1) throws XMLStreamException {
+        // not implemented
+    }
+
+    public String getElementText() throws XMLStreamException {
+        if (state == START_ELEMENT) {
+            // move to the end state and return the value
+            state = END_ELEMENT_STATE;
+            return value;
+        } else {
+            throw new XMLStreamException();
+        }
+
+    }
+
+    public int nextTag() throws XMLStreamException {
+        return 0; // TODO
+    }
+
+    public boolean hasNext() throws XMLStreamException {
+        return state != END_ELEMENT_STATE;
+    }
+
+    public void close() throws XMLStreamException {
+        // Do nothing - we've nothing to free here
+    }
+
+    public String getNamespaceURI(String prefix) {
+        return namespaceContext.getNamespaceURI(prefix);
+    }
+
+    public boolean isStartElement() {
+        return state == START_ELEMENT_STATE;
+    }
+
+    public boolean isEndElement() {
+        return state == END_ELEMENT_STATE;
+    }
+
+    public boolean isCharacters() {
+        return state == TEXT_STATE;
+    }
+
+    public boolean isWhiteSpace() {
+        return false; // no whitespaces here
+    }
+
+    public String getAttributeValue(String string, String string1) {
+        return null;
+    }
+
+    public int getAttributeCount() {
+        return 0;
+    }
+
+    public QName getAttributeName(int i) {
+        return null;
+    }
+
+    public String getAttributeNamespace(int i) {
+        return null;
+    }
+
+    public String getAttributeLocalName(int i) {
+        return null;
+    }
+
+    public String getAttributePrefix(int i) {
+        return null;
+    }
+
+    public String getAttributeType(int i) {
+        return null;
+    }
+
+    public String getAttributeValue(int i) {
+        return null;
+    }
+
+    public boolean isAttributeSpecified(int i) {
+        return false; // no attributes here
+    }
+
+    public int getNamespaceCount() {
+        return nsDeclared ? 1 : 0;
+    }
+
+    public String getNamespacePrefix(int i) {
+        return (nsDeclared && i == 0) ? name.getPrefix() : null;
+    }
+
+    public String getNamespaceURI(int i) {
+        return (nsDeclared && i == 0) ? name.getNamespaceURI() : null;
+    }
+
+    public NamespaceContext getNamespaceContext() {
+        return this.namespaceContext;
+    }
+
+    public int getEventType() {
+        switch (state) {
+            case START_ELEMENT_STATE:
+                return START_ELEMENT;
+            case END_ELEMENT_STATE:
+                return END_ELEMENT;
+            case TEXT_STATE:
+                return CHARACTERS;
+            default:
+                throw new UnsupportedOperationException();
+                // we've no idea what this is!!!!!
+        }
+
+    }
+
+    public String getText() {
+        if (state == TEXT_STATE) {
+            return value;
+        } else {
+            throw new IllegalStateException();
+        }
+    }
+
+    public char[] getTextCharacters() {
+        if (state == TEXT_STATE) {
+            return value.toCharArray();
+        } else {
+            throw new IllegalStateException();
+        }
+    }
+
+    public int getTextCharacters(int i, char[] chars, int i1, int i2) throws XMLStreamException {
+        // not implemented
+        throw new UnsupportedOperationException();
+    }
+
+    public int getTextStart() {
+        if (state == TEXT_STATE) {
+            return 0;
+        } else {
+            throw new IllegalStateException();
+        }
+    }
+
+    public int getTextLength() {
+        if (state == TEXT_STATE) {
+            return value.length();
+        } else {
+            throw new IllegalStateException();
+        }
+
+    }
+
+    public String getEncoding() {
+        return null;
+    }
+
+    public boolean hasText() {
+        return state == TEXT_STATE;
+    }
+
+    public Location getLocation() {
+        return new Location() {
+            public int getLineNumber() {
+                return 0;
+            }
+
+            public int getColumnNumber() {
+                return 0;
+            }
+
+            public int getCharacterOffset() {
+                return 0;
+            }
+
+            public String getPublicId() {
+                return null;
+            }
+
+            public String getSystemId() {
+                return null;
+            }
+        };
+    }
+
+    public QName getName() {
+        if (state != TEXT_STATE) {
+            return name;
+        } else {
+            return null;
+        }
+    }
+
+    public String getLocalName() {
+        if (state != TEXT_STATE) {
+            return name.getLocalPart();
+        } else {
+            return null;
+        }
+    }
+
+    public boolean hasName() {
+        return state != TEXT_STATE;
+
+    }
+
+    public String getNamespaceURI() {
+        if (state != TEXT_STATE) {
+            return name.getNamespaceURI();
+        } else {
+            return null;
+        }
+
+    }
+
+    public String getPrefix() {
+        if (state != TEXT_STATE) {
+            return name.getPrefix();
+        } else {
+            return null;
+        }
+    }
+
+    public String getVersion() {
+        return null; // TODO 1.0 ?
+    }
+
+    public boolean isStandalone() {
+        return false;
+    }
+
+    public boolean standaloneSet() {
+        return false;
+    }
+
+    public String getCharacterEncodingScheme() {
+        return null;
+    }
+
+    public String getPITarget() {
+        return null;
+    }
+
+    public String getPIData() {
+        return null;
+    }
+
+    public boolean isDone() {
+        return state == END_ELEMENT_STATE;
+    }
+
+    public void setParentNamespaceContext(NamespaceContext nsContext) {
+        this.namespaceContext.setParentNsContext(nsContext);
+    }
+
+    public void init() {
+        // just add the current elements namespace and prefix to the this
+        // elements nscontext
+        addToNsMap(name.getPrefix(), name.getNamespaceURI());
+
+    }
+
+    /**
+     * @param prefix
+     * @param uri
+     */
+    private void addToNsMap(String prefix, String uri) {
+        // TODO - need to fix this up to cater for cases where
+        // namespaces are having no prefixes
+        if (!uri.equals(namespaceContext.getNamespaceURI(prefix))) {
+            // this namespace is not there. Need to declare it
+            namespaceContext.pushNamespace(prefix, uri);
+            nsDeclared = true;
+        }
+    }
+
+}