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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.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import org.osoa.sdo.Type;
/**
* @version $Rev$ $Date$
*/
public class SDOInstanceFactory<T> implements InstanceFactory<T> {
private Class<T> implementationClass;
private Constructor<T> ctr;
public void setImplementationClass(Class<T> implementationClass) {
this.implementationClass = implementationClass;
try {
ctr = implementationClass.getConstructor(TypeImpl.class);
} catch (NoSuchMethodException e) {
throw new AssertionError();
}
}
public T newInstance(Type<T> type) {
try {
return ctr.newInstance(type);
} catch (InstantiationException e) {
throw (AssertionError) new AssertionError("Unable to instantiate " + implementationClass.getName()).initCause(e);
} catch (IllegalAccessException e) {
throw (AssertionError) new AssertionError("Unable to instantiate " + implementationClass.getName()).initCause(e);
} catch (InvocationTargetException e) {
Throwable t = e.getCause();
if (t instanceof RuntimeException) {
throw (RuntimeException) t;
} else if (t instanceof Error) {
throw (Error) t;
} else {
throw new AssertionError("SDO Implementation threw checked exception");
}
}
}
}
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