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/**
*
* Copyright 2005 BEA Systems Inc.
* Copyright 2005 International Business Machines Corporation
*
* Licensed 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.sdo.impl;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.xml.namespace.QName;
import org.osoa.sdo.DuplicateTypeException;
import org.osoa.sdo.Property;
import org.osoa.sdo.Type;
import org.osoa.sdo.helper.TypeHelper;
/**
* @version $Rev$ $Date$
*/
public class TypeHelperImpl implements TypeHelper {
private final Map<java.lang.reflect.Type, Type<?>> typesByClass;
private final Map<QName, Type<?>> typesByName;
private final ProxyClassLoader cl;
@SuppressWarnings({"ClassLoader2Instantiation"})
public TypeHelperImpl(ClassLoader cl) {
this.cl = new ProxyClassLoader(cl);
typesByName = new HashMap<QName, Type<?>>();
typesByClass = new HashMap<java.lang.reflect.Type, Type<?>>();
mapType(DataTypeImpl.BOOLEAN);
mapType(DataTypeImpl.BYTE);
mapType(DataTypeImpl.BYTES);
mapType(DataTypeImpl.CHARACTER);
mapType(DataTypeImpl.DATE);
mapType(DataTypeImpl.DOUBLE);
mapType(DataTypeImpl.FLOAT);
mapType(DataTypeImpl.INT);
mapType(DataTypeImpl.LONG);
mapType(DataTypeImpl.SHORT);
mapType(DataTypeImpl.STRING);
mapType(DataTypeImpl.BOOLEAN_OBJECT);
mapType(DataTypeImpl.CHARACTER_OBJECT);
}
private void mapType(Type<?> type) {
typesByName.put(type.getName(), type);
java.lang.reflect.Type javaType = type.getJavaType();
if (javaType != null) {
typesByClass.put(javaType, type);
}
}
public <T> Type<T> define(Class<T> interfaceClass) {
if (typesByClass.containsKey(interfaceClass)) {
throw new DuplicateTypeException(interfaceClass.getName());
}
String namespace;
String name;
org.osoa.sdo.annotation.Type ann = interfaceClass.getAnnotation(org.osoa.sdo.annotation.Type.class);
if (ann != null) {
namespace = ann.namespace();
name = ann.name();
} else {
namespace = Type.JAVA_NAMESPACE;
name = interfaceClass.getName();
}
return define(new QName(namespace, name), interfaceClass);
}
public <T> Type<T> define(QName typeName, Class<T> interfaceClass) {
if (!interfaceClass.isInterface()) {
throw new IllegalArgumentException("Not an interface: " + interfaceClass);
}
Method[] methods = interfaceClass.getMethods();
Map<String, Property> props = new LinkedHashMap<String, Property>(methods.length >> 1);
for (Method method : methods) {
String methodName = method.getName();
Class<?>[] params = method.getParameterTypes();
String propName;
java.lang.reflect.Type propType;
if (Void.TYPE.equals(method.getReturnType()) &&
methodName.startsWith("set") &&
methodName.length() > 3 &&
params.length == 1) {
propName = Character.toLowerCase(methodName.charAt(3)) + methodName.substring(4);
propType = params[0];
} else if (Boolean.TYPE.equals(method.getReturnType()) &&
methodName.startsWith("is") &&
methodName.length() > 2 &&
params.length == 0) {
propName = Character.toLowerCase(methodName.charAt(2)) + methodName.substring(3);
propType = Boolean.TYPE;
} else if (!Void.TYPE.equals(method.getReturnType()) &&
methodName.startsWith("get") &&
methodName.length() > 3 &&
params.length == 0) {
propName = Character.toLowerCase(methodName.charAt(3)) + methodName.substring(4);
propType = method.getGenericReturnType();
} else {
throw new IllegalArgumentException("Non-accessor method on interface: " + method);
}
defineProperty(props, propName, propType);
}
return define(typeName, interfaceClass, new ArrayList(props.values()));
}
private void defineProperty(Map<String, Property> props, String propName, java.lang.reflect.Type propType) {
Property<?> prop = props.get(propName);
if (prop != null) {
/* TODO should check this
if (!propClass.equals(prop.getType().getInstanceClass())) {
throw new IllegalArgumentException("set/get types do not match for property: " + propName);
}
*/
return;
}
int index = props.size();
if (propType instanceof Class<?>) {
prop = getPropertyFromClass(propName, index, propType);
} else if (propType instanceof ParameterizedType) {
prop = getPropertyFromParameterizedType(propName, index, propType);
} else {
throw new UnsupportedOperationException();
}
props.put(propName, prop);
}
private Property<?> getPropertyFromParameterizedType(String propName, int index, java.lang.reflect.Type propType) {
ParameterizedType parameterizedType = (ParameterizedType) propType;
if (List.class.equals(parameterizedType.getRawType())) {
java.lang.reflect.Type actualPropType = parameterizedType.getActualTypeArguments()[0];
if (!(actualPropType instanceof Class<?>)) {
throw new IllegalArgumentException("Actual type of list property must not be generic: " + propName);
}
Class<?> propClass = (Class<?>) actualPropType;
Type<?> type = getType(propClass);
if (type == null) {
type = define(propClass);
}
return new ListPropertyImpl(propName, type, parameterizedType,index);
} else {
throw new IllegalArgumentException("Invalid generic type: " + parameterizedType);
}
}
private Property<?> getPropertyFromClass(String propName, int index, java.lang.reflect.Type propType) {
Class<?> propClass = (Class<?>) propType;
if (propClass.isArray() && !byte[].class.equals(propClass)) {
throw new IllegalArgumentException("Property cannot be an array type: " + propName);
}
Type<?> type = getType(propClass);
if (type == null) {
type = define(propClass);
}
return new PropertyImpl(propName, type, index);
}
private <T> Type<T> define(QName typeName, Class<T> instanceClass, List<Property> properties) {
if (typeName == null) {
throw new IllegalArgumentException("typeName is null");
}
String namespace = typeName.getNamespaceURI();
String name = typeName.getLocalPart();
if (namespace == null || Type.SDO_NAMESPACE.equals(namespace)) {
throw new IllegalArgumentException("Invalid namespace: " + namespace);
}
if (name == null) {
throw new IllegalArgumentException("name is null");
}
if (Type.JAVA_NAMESPACE.equals(namespace) && !instanceClass.getName().equals(name)) {
throw new IllegalArgumentException("in Java namespace, name must equal instanceClass name");
}
SDOInstanceFactory<T> instanceFactory = new SDOInstanceFactory<T>();
Type<T> type = new TypeImpl<T>(typeName, instanceClass, properties, instanceFactory);
SDOGenerator gen = new SDOGenerator(instanceClass);
for (Property<?> property : properties) {
gen.addProperty(property);
}
byte[] bytes = gen.toByteArray();
// dumpClass(typeName.getLocalPart(), bytes);
Class<T> implementationClass = (Class<T>) cl.addProxy(null, bytes);
instanceFactory.setImplementationClass(implementationClass);
mapType(type);
return type;
}
public <T> Type<T> getType(Class<T> interfaceClass) {
return (Type<T>) typesByClass.get(interfaceClass);
}
public Type<?> getType(QName name) {
return typesByName.get(name);
}
private static void dumpClass(String name, byte[] bytes) {
File file = new File("/tmp/dump/" + name.replace('.', '/') + ".class");
file.getParentFile().mkdirs();
try {
FileOutputStream fos = new FileOutputStream(file);
fos.write(bytes);
fos.close();
} catch (IOException e) {
}
}
}
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