diff options
Diffstat (limited to 'sandbox/mobile-android/tuscany-assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/PropertyUtil.java')
| -rw-r--r-- | sandbox/mobile-android/tuscany-assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/PropertyUtil.java | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/sandbox/mobile-android/tuscany-assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/PropertyUtil.java b/sandbox/mobile-android/tuscany-assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/PropertyUtil.java new file mode 100644 index 0000000000..396cf011aa --- /dev/null +++ b/sandbox/mobile-android/tuscany-assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/PropertyUtil.java @@ -0,0 +1,208 @@ +/*
+ * 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.assembly.builder.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URL;
+import java.net.URLConnection;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+import javax.xml.XMLConstants;
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.transform.Source;
+import javax.xml.transform.TransformerException;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMResult;
+import javax.xml.transform.sax.SAXSource;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathExpression;
+import javax.xml.xpath.XPathExpressionException;
+import javax.xml.xpath.XPathFactory;
+
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.Property;
+import org.apache.tuscany.sca.assembly.builder.CompositeBuilderException;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.xml.sax.InputSource;
+
+import sun.reflect.generics.reflectiveObjects.NotImplementedException;
+
+/**
+ * Utility class to deal with processing of component properties that are taking values from the parent
+ * composite's properties or an external file.
+ */
+public class PropertyUtil {
+ //private static final XPathFactory XPATH_FACTORY = XPathFactory.newInstance();
+ private static final DocumentBuilderFactory DOC_BUILDER_FACTORY = DocumentBuilderFactory.newInstance();
+ //private static final TransformerFactory TRANSFORMER_FACTORY = TransformerFactory.newInstance();
+
+ static private Document evaluate(Document node, XPathExpression expression)
+ throws XPathExpressionException, ParserConfigurationException {
+
+ Node value = node.getDocumentElement();
+ Node result = (Node)expression.evaluate(value, XPathConstants.NODE);
+ if (result == null) {
+ return null;
+ }
+
+ // TODO: How to wrap the result into a Document?
+ Document document = DOC_BUILDER_FACTORY.newDocumentBuilder().newDocument();
+ if (result instanceof Document) {
+ return (Document)result;
+ } else {
+ //Element root = document.createElementNS(null, "value");
+ //document.appendChild(root);
+ document.appendChild(document.importNode(result, true));
+ return document;
+ }
+ }
+
+ static private Document loadFromFile(String file) throws MalformedURLException, IOException,
+ TransformerException, ParserConfigurationException {
+ URI uri = URI.create(file);
+ // URI resolution for relative URIs is done when the composite is resolved.
+ URL url = uri.toURL();
+ URLConnection connection = url.openConnection();
+ connection.setUseCaches(false);
+ InputStream is = null;
+ try {
+ is = connection.getInputStream();
+
+ Source streamSource = new SAXSource(new InputSource(is));
+ DOMResult result = new DOMResult();
+ //javax.xml.transform.Transformer transformer = TRANSFORMER_FACTORY.newTransformer();
+ //transformer.transform(streamSource, result);
+ throw new NotImplementedException();
+
+ //return (Document)result.getNode();
+ } finally {
+ if (is != null) {
+ is.close();
+ }
+ }
+ }
+
+ static void sourceComponentProperties(Map<String, Property> compositeProperties,
+ Component componentDefinition) throws CompositeBuilderException,
+ ParserConfigurationException,
+ XPathExpressionException,
+ TransformerException,
+ IOException {
+
+ List<ComponentProperty> componentProperties = componentDefinition.getProperties();
+ for (ComponentProperty aProperty : componentProperties) {
+ String source = aProperty.getSource();
+ String file = aProperty.getFile();
+ if (source != null) {
+ // $<name>/...
+ int index = source.indexOf('/');
+ if (index == -1) {
+ // Tolerating $prop
+ source = source + "/";
+ index = source.length() - 1;
+ }
+ if (source.charAt(0) == '$') {
+ String name = source.substring(1, index);
+ Property compositeProp = compositeProperties.get(name);
+ if (compositeProp == null) {
+ throw new CompositeBuilderException("The 'source' cannot be resolved to a composite property: " + source);
+ }
+
+ Document compositePropDefValues = (Document)compositeProp.getValue();
+
+ // FIXME: How to deal with namespaces?
+ Document node = evaluate(compositePropDefValues, aProperty.getSourceXPathExpression());
+
+ if (node != null) {
+ aProperty.setValue(node);
+ }
+ } else {
+ throw new CompositeBuilderException("The 'source' has an invalid value: " + source);
+ }
+ } else if (file != null) {
+ aProperty.setValue(loadFromFile(aProperty.getFile()));
+
+ }
+ }
+ }
+
+ private static class DOMNamespaceContext implements NamespaceContext {
+ private Node node;
+
+ /**
+ * @param node
+ */
+ public DOMNamespaceContext(Node node) {
+ super();
+ this.node = node;
+ }
+
+ public String getNamespaceURI(String prefix) {
+ if (prefix == null) {
+ throw new IllegalArgumentException("Prefix is null");
+ } else if (XMLConstants.XML_NS_PREFIX.equals(prefix)) {
+ return XMLConstants.XML_NS_URI;
+ } else if (XMLConstants.XMLNS_ATTRIBUTE.equals(prefix)) {
+ return XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
+ }
+ String ns = node.lookupNamespaceURI(prefix);
+ return ns == null ? XMLConstants.NULL_NS_URI : ns;
+ }
+
+ public String getPrefix(String namespaceURI) {
+ if (namespaceURI == null) {
+ throw new IllegalArgumentException("Namespace URI is null");
+ } else if (XMLConstants.XML_NS_URI.equals(namespaceURI)) {
+ return XMLConstants.XML_NS_PREFIX;
+ } else if (XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(namespaceURI)) {
+ return XMLConstants.XMLNS_ATTRIBUTE;
+ }
+ return node.lookupPrefix(namespaceURI);
+ }
+
+ public Iterator<?> getPrefixes(String namespaceURI) {
+ // Not implemented
+ if (namespaceURI == null) {
+ throw new IllegalArgumentException("Namespace URI is null");
+ } else if (XMLConstants.XML_NS_URI.equals(namespaceURI)) {
+ return Arrays.asList(XMLConstants.XML_NS_PREFIX).iterator();
+ } else if (XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(namespaceURI)) {
+ return Arrays.asList(XMLConstants.XMLNS_ATTRIBUTE).iterator();
+ }
+ String prefix = getPrefix(namespaceURI);
+ if (prefix == null) {
+ return Collections.emptyList().iterator();
+ }
+ return Arrays.asList(prefix).iterator();
+ }
+
+ }
+
+}
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