1 files changed, 191 insertions, 0 deletions
diff --git a/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/StringParserPropertyFactory.java b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/StringParserPropertyFactory.java
new file mode 100644
index 0000000000..eda09d6f11
--- /dev/null
+++ b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/StringParserPropertyFactory.java
@@ -0,0 +1,191 @@
+/*
+ * 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 java.beans.PropertyEditor;
+import java.beans.PropertyEditorManager;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import javax.xml.stream.XMLStreamException;
+
+import org.apache.tuscany.spi.ObjectFactory;
+import org.apache.tuscany.spi.loader.LoaderException;
+import org.apache.tuscany.spi.loader.PropertyObjectFactory;
+import org.apache.tuscany.spi.model.Property;
+import org.apache.tuscany.spi.model.PropertyValue;
+
+import org.apache.tuscany.core.injection.SingletonObjectFactory;
+
+/**
+ * Implementation of StAXPropertyFactory that interprets the XML as
+ *
+ * @version $Rev$ $Date$
+ */
+public class StringParserPropertyFactory implements PropertyObjectFactory {
+
+    public <T> ObjectFactory<T> createObjectFactory(Property<T> property, PropertyValue<T> value)
+        throws LoaderException {
+        String text = value.getValue().getDocumentElement().getTextContent();
+        return new SingletonObjectFactory<T>(createInstance(text, property.getJavaType()));
+    }
+
+    @SuppressWarnings("unchecked")
+    public <T> T createInstance(String text, Class<T> type) throws LoaderException {
+        // Class<T> type = property.getJavaType();
+        assert type != null : "property type is null";
+
+        // degenerate case where property type is a String
+        if (String.class.equals(type)) {
+            return type.cast(text);
+        }
+
+        // special handler to convert hexBinary to a byte[]
+        if (byte[].class.equals(type)) {
+            byte[] instance = new byte[text.length() >> 1];
+            for (int i = 0; i < instance.length; i++) {
+                instance[i] =
+                    (byte) (Character.digit(text.charAt(i << 1), 16) << 4 | Character.digit(text
+                        .charAt((i << 1) + 1), 16));
+            }
+            return type.cast(instance);
+        }
+
+        // does this type have a static valueOf(String) method?
+        try {
+            Method valueOf = type.getMethod("valueOf", String.class);
+            if (Modifier.isStatic(valueOf.getModifiers())) {
+                try {
+                    return type.cast(valueOf.invoke(null, text));
+                } catch (IllegalAccessException e) {
+                    throw new AssertionError("getMethod returned an inaccessible method");
+                } catch (InvocationTargetException e) {
+                    // FIXME we should throw something better
+                    throw new LoaderException(e.getCause());
+                }
+            }
+        } catch (NoSuchMethodException e) {
+            // try something else
+        }
+
+        // does this type have a constructor that takes a String?
+        try {
+            Constructor<T> ctr = type.getConstructor(String.class);
+            return ctr.newInstance(text);
+        } catch (NoSuchMethodException e) {
+            // try something else
+        } catch (IllegalAccessException e) {
+            throw new AssertionError("getConstructor returned an inaccessible method");
+        } catch (InstantiationException e) {
+            throw new LoaderException("Property type cannot be instantiated: " + type.getName());
+        } catch (InvocationTargetException e) {
+            // FIXME we should throw something better
+            throw new LoaderException(e.getCause());
+        }
+
+        // do we have a property editor for it?
+        PropertyEditor editor = PropertyEditorManager.findEditor(type);
+        if (editor != null) {
+            try {
+                editor.setAsText(text);
+                return (T) editor.getValue();
+            } catch (IllegalArgumentException e) {
+                // FIXME we should throw something better
+                throw new LoaderException(e);
+
+            }
+        }
+
+        // FIXME we should throw something better
+        throw new LoaderException("Do not have a way to parse a String into a " + type.getName());
+
+    }
+
+    @SuppressWarnings("unchecked")
+    public <T> ObjectFactory<T> createObjectFactory(String text, Property<T> property)
+        throws XMLStreamException, LoaderException {
+        Class<T> type = property.getJavaType();
+        assert type != null : "property type is null";
+
+        // degenerate case where property type is a String
+        if (String.class.equals(type)) {
+            return new SingletonObjectFactory<T>(type.cast(text));
+        }
+
+        // special handler to convert hexBinary to a byte[]
+        if (byte[].class.equals(type)) {
+            byte[] instance = new byte[text.length() >> 1];
+            for (int i = 0; i < instance.length; i++) {
+                instance[i] =
+                    (byte) (Character.digit(text.charAt(i << 1), 16) << 4 | Character.digit(text
+                        .charAt((i << 1) + 1), 16));
+            }
+            return new SingletonObjectFactory<T>(type.cast(instance));
+        }
+
+        // does this type have a static valueOf(String) method?
+        try {
+            Method valueOf = type.getMethod("valueOf", String.class);
+            if (Modifier.isStatic(valueOf.getModifiers())) {
+                try {
+                    return new SingletonObjectFactory<T>(type.cast(valueOf.invoke(null, text)));
+                } catch (IllegalAccessException e) {
+                    throw new AssertionError("getMethod returned an inaccessible method");
+                } catch (InvocationTargetException e) {
+                    // FIXME we should throw something better
+                    throw new LoaderException(e.getCause());
+                }
+            }
+        } catch (NoSuchMethodException e) {
+            // try something else
+        }
+
+        // does this type have a constructor that takes a String?
+        try {
+            Constructor<T> ctr = type.getConstructor(String.class);
+            return new SingletonObjectFactory<T>(ctr.newInstance(text));
+        } catch (NoSuchMethodException e) {
+            // try something else
+        } catch (IllegalAccessException e) {
+            throw new AssertionError("getConstructor returned an inaccessible method");
+        } catch (InstantiationException e) {
+            throw new LoaderException("Property type cannot be instantiated: " + type.getName());
+        } catch (InvocationTargetException e) {
+            // FIXME we should throw something better
+            throw new LoaderException(e.getCause());
+        }
+
+        // do we have a property editor for it?
+        PropertyEditor editor = PropertyEditorManager.findEditor(type);
+        if (editor != null) {
+            try {
+                editor.setAsText(text);
+                return new SingletonObjectFactory<T>((T) editor.getValue());
+            } catch (IllegalArgumentException e) {
+                // FIXME we should throw something better
+                throw new LoaderException(e);
+
+            }
+        }
+
+        // FIXME we should throw something better
+        throw new LoaderException("Do not have a way to parse a String into a " + type.getName());
+    }
+}