1 files changed, 98 insertions, 0 deletions
diff --git a/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/PropertyLoader.java b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/PropertyLoader.java
new file mode 100644
index 0000000000..ac39c135d9
--- /dev/null
+++ b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/PropertyLoader.java
@@ -0,0 +1,98 @@
+/*
+ * 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.core.loader;
+
+import javax.xml.namespace.QName;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+import org.w3c.dom.Document;
+import static org.osoa.sca.Constants.SCA_NS;
+import org.osoa.sca.annotations.Constructor;
+import org.osoa.sca.annotations.Reference;
+
+import org.apache.tuscany.spi.deployer.DeploymentContext;
+import org.apache.tuscany.spi.extension.LoaderExtension;
+import org.apache.tuscany.spi.loader.LoaderException;
+import org.apache.tuscany.spi.loader.LoaderRegistry;
+import org.apache.tuscany.spi.model.ModelObject;
+import org.apache.tuscany.spi.model.Property;
+
+/**
+ * Loads a property from an XML-based assembly file
+ *
+ * @version $Rev$ $Date$
+ */
+public class PropertyLoader extends LoaderExtension<Property> {
+    public static final String PROPERTY_NAME_ATTR = "name";
+    public static final String PROPERTY_TYPE_ATTR = "type";
+    public static final String PROPERTY_MANY_ATTR = "many";
+    public static final String REQUIRED_ATTR = "override";
+
+    public static final QName PROPERTY = new QName(SCA_NS, "property");
+    private final DocumentBuilder documentBuilder;
+
+    @Constructor
+    public PropertyLoader(@Reference LoaderRegistry registry) {
+        super(registry);
+        try {
+            documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
+        } catch (ParserConfigurationException e) {
+            // we should be able to construct the default DocumentBuilder
+            throw new AssertionError(e);
+        }
+    }
+
+    public QName getXMLType() {
+        return PROPERTY;
+    }
+
+    public Property<?> load(ModelObject object, XMLStreamReader reader,
+                            DeploymentContext ctx)
+        throws XMLStreamException, LoaderException {
+        assert PROPERTY.equals(reader.getName());
+        String name = reader.getAttributeValue(null, PROPERTY_NAME_ATTR);
+        String typeName = reader.getAttributeValue(null, PROPERTY_TYPE_ATTR);
+        QName xmlType = null;
+        if (typeName != null) {
+            int index = typeName.indexOf(':');
+            if (index != -1) {
+                String prefix = typeName.substring(0, index);
+                String localName = typeName.substring(index + 1);
+                String ns = reader.getNamespaceURI(prefix);
+                xmlType = new QName(ns, localName, prefix);
+            }
+        }
+        boolean many = Boolean.parseBoolean(reader.getAttributeValue(null, PROPERTY_MANY_ATTR));
+        String required = reader.getAttributeValue(null, REQUIRED_ATTR);
+        Document value = PropertyUtils.createPropertyValue(reader, xmlType, documentBuilder);
+
+        Property<?> property = new Property();
+        property.setRequired(Boolean.parseBoolean(required));
+        property.setName(name);
+        property.setXmlType(xmlType);
+        property.setMany(many);
+
+        property.setDefaultValue(value);
+        return property;
+    }
+}