Java 类org.hibernate.InstantiationException 实例源码

public Object instantiate() {
    if ( isAbstract ) {
        throw new InstantiationException( "Cannot instantiate abstract class or interface: ", mappedClass );
    }
    else if ( optimizer != null ) {
        return optimizer.newInstance();
    }
    else if ( constructor == null ) {
        throw new InstantiationException( "No default constructor for entity: ", mappedClass );
    }
    else {
        try {
            return constructor.newInstance( (Object[]) null );
        }
        catch ( Exception e ) {
            throw new InstantiationException( "Could not instantiate entity: ", mappedClass, e );
        }
    }
}

public Object instantiate() {
    if ( ReflectHelper.isAbstractClass(mappedClass) ) {
        throw new InstantiationException( "Cannot instantiate abstract class or interface: ", mappedClass );
    }
    else if ( optimizer != null ) {
        return optimizer.newInstance();
    }
    else if ( constructor == null ) {
        throw new InstantiationException( "No default constructor for entity: ", mappedClass );
    }
    else {
        try {
            return constructor.newInstance( null );
        }
        catch ( Exception e ) {
            throw new InstantiationException( "Could not instantiate entity: ", mappedClass, e );
        }
    }
}

@Override
public Object newInstance() {
    try {
        return fastClass.newInstance();
    }
    catch ( Exception e ) {
        throw new InstantiationException(
                "Could not instantiate entity with Javassist optimizer: ",
                fastClass.getJavaClass(),
                e
        );
    }
}

/**
 * Creates an iv-user header filter to get user id from TAM/Webseal.
 *
 * @return the request header authentication filter
 * @throws Exception
 *             the exception if something goes wrong
 */
private RequestHeaderAuthenticationFilter createIVUserHeaderFilter() {
    RequestHeaderAuthenticationFilter requestFilter = new RequestHeaderAuthenticationFilter();
    requestFilter.setPrincipalRequestHeader("iv-user");
    requestFilter.setExceptionIfHeaderMissing(false);
    requestFilter.setCheckForPrincipalChanges(true);
    try {
        requestFilter.setAuthenticationManager(this.authenticationManagerBean());
    } catch (Exception e) {
        LOG.error("Error during security setup", e);
        throw new InstantiationException("Error creating authentication manager", WebSecurityConfig.class, e);
    }
    return requestFilter;
}

private static Object instantiate(Constructor constructor) {
    try {
        return constructor.newInstance(null);
    }
    catch (Exception e) {
        throw new InstantiationException( "could not instantiate test object", constructor.getDeclaringClass(), e );
    }
}

public Object newInstance() {
    try {
        return fastClass.newInstance();
    }
    catch ( Throwable t ) {
        throw new InstantiationException(
                "Could not instantiate entity with Javassist optimizer: ",
                fastClass.getJavaClass(), t
        );
    }
}

public Object newInstance() {
    try {
        return fastClass.newInstance();
    }
    catch ( Throwable t ) {
        throw new InstantiationException(
                "Could not instantiate entity with CGLIB optimizer: ",
                fastClass.getJavaClass(),
                t
        );
    }
}

/**
 * Instantiate a class using the provided Constructor
 *
 * @param constructor The constructor
 *
 * @return The instantiated object
 *
 * @throws InstantiationException if something went wrong
 */
private static Object instantiate(Constructor constructor) {
    try {
        return constructor.newInstance();
    }
    catch (Exception e) {
        throw new InstantiationException( "could not instantiate test object", constructor.getDeclaringClass(), e );
    }
}