1 files changed, 0 insertions, 151 deletions
diff --git a/java/sca/modules/common-xml/src/main/java/org/apache/tuscany/sca/common/xml/xpath/XPathHelper.java b/java/sca/modules/common-xml/src/main/java/org/apache/tuscany/sca/common/xml/xpath/XPathHelper.java
deleted file mode 100644
index a65bd5fe15..0000000000
--- a/java/sca/modules/common-xml/src/main/java/org/apache/tuscany/sca/common/xml/xpath/XPathHelper.java
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * 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.xpath;
-
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import javax.xml.XMLConstants;
-import javax.xml.namespace.NamespaceContext;
-import javax.xml.xpath.XPath;
-import javax.xml.xpath.XPathExpression;
-import javax.xml.xpath.XPathExpressionException;
-import javax.xml.xpath.XPathFactory;
-
-import org.apache.tuscany.sca.common.xml.stax.reader.NamespaceContextImpl;
-import org.apache.tuscany.sca.core.ExtensionPointRegistry;
-import org.apache.tuscany.sca.core.FactoryExtensionPoint;
-import org.apache.tuscany.sca.core.UtilityExtensionPoint;
-
-/**
- * Helper for XPath operations
- */
-public class XPathHelper {
-    private XPathFactory factory;
-
-    /**
-     * @param factory
-     */
-    public XPathHelper(XPathFactory factory) {
-        super();
-        this.factory = factory;
-    }
-
-    public XPathHelper(ExtensionPointRegistry registry) {
-        FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
-        this.factory = factories.getFactory(XPathFactory.class);
-    }
-
-    public static XPathHelper getInstance(ExtensionPointRegistry registry) {
-        UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class);
-        return utilities.getUtility(XPathHelper.class);
-    }
-
-    public XPath newXPath() {
-        return factory.newXPath();
-    }
-
-    public XPathExpression compile(NamespaceContext context, String expression) throws XPathExpressionException {
-        XPath path = newXPath();
-        context = getNamespaceContext(expression, context);
-        return compile(path, context, expression);
-    }
-
-    public XPathExpression compile(XPath path, NamespaceContext context, String expression)
-        throws XPathExpressionException {
-        path.setNamespaceContext(context);
-        return path.compile(expression);
-    }
-
-    /**
-     * Take a snapshot of the given namespace context based on the prefixes found in the expression.
-     * In StAX, the prefix/namespace mapping in the namespace context can change as the event moves  
-     * @param expression
-     * @param context
-     * @return
-     */
-    public NamespaceContext getNamespaceContext(String expression, NamespaceContext context) {
-        NamespaceContextImpl nsContext = new NamespaceContextImpl(null);
-
-        for (String prefix : getPrefixes(expression)) {
-            String namespace = context.getNamespaceURI(prefix);
-            if (namespace != null && !XMLConstants.NULL_NS_URI.equals(namespace)) {
-                nsContext.register(prefix, namespace);
-            }
-        }
-        return nsContext;
-    }
-
-    /**
-     * Parse the XPath expression to collect all the prefixes for namespaces
-     * @param expression
-     * @return A collection of prefixes
-     */
-    private Collection<String> getPrefixes(String expression) {
-        Collection<String> prefixes = new HashSet<String>();
-        prefixes.add(XMLConstants.DEFAULT_NS_PREFIX);
-        Pattern pattern = Pattern.compile("([^:]+):([^:]+)");
-        Matcher matcher = pattern.matcher(expression);
-        while (matcher.find()) {
-            String prefix = extractNCName(matcher.group(1), true);
-            String local = extractNCName(matcher.group(2), false);
-            if (prefix != null && local != null) {
-                prefixes.add(prefix);
-            }
-        }
-        return prefixes;
-    }
-
-    private String extractNCName(String str, boolean reverse) {
-        if (str.length() < 1) {
-            return null;
-        }
-        if (!reverse) {
-            if (!XMLCharHelper.isNCNameStart(str.charAt(0))) {
-                return null;
-            }
-            int i = 0, j = str.length();
-            // Find the last non-NCName char
-            for (; i < j; i++) {
-                if (!XMLCharHelper.isNCName(str.charAt(i))) {
-                    break;
-                }
-            }
-            return str.substring(0, i);
-        } else {
-            int j = str.length() - 1;
-            // Find the first non-NCName char
-            for (; j >= 0; j--) {
-                if (!XMLCharHelper.isNCName(str.charAt(j))) {
-                    break;
-                }
-            }
-            // j is before the first char of the prefix
-            if (j != (str.length() - 1) && XMLCharHelper.isNCNameStart(str.charAt(j + 1))) {
-                return str.substring(j + 1);
-            } else {
-                return null;
-            }
-        }
-    }
-
-}