/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2010 Sun Microsystems, Inc.
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*/
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package org.opends.sdk.requests;
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import java.util.Collections;
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import java.util.List;
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import org.opends.sdk.DecodeException;
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import org.opends.sdk.DecodeOptions;
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import org.opends.sdk.controls.Control;
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import org.opends.sdk.controls.ControlDecoder;
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import org.opends.sdk.controls.GenericControl;
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import com.sun.opends.sdk.util.Collections2;
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import com.sun.opends.sdk.util.Function;
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import com.sun.opends.sdk.util.Functions;
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import com.sun.opends.sdk.util.Validator;
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/**
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* Unmodifiable request implementation.
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*
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* @param <R>
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* The type of request.
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*/
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abstract class AbstractUnmodifiableRequest<R extends Request> implements
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Request
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{
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protected final R impl;
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/**
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* Creates a new unmodifiable request implementation.
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*
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* @param impl
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* The underlying request implementation to be made unmodifiable.
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*/
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AbstractUnmodifiableRequest(final R impl)
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{
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this.impl = impl;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public final R addControl(final Control control)
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throws UnsupportedOperationException, NullPointerException
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{
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throw new UnsupportedOperationException();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public final <C extends Control> C getControl(
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final ControlDecoder<C> decoder, final DecodeOptions options)
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throws NullPointerException, DecodeException
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{
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Validator.ensureNotNull(decoder, options);
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final List<Control> controls = impl.getControls();
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// Avoid creating an iterator if possible.
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if (controls.isEmpty())
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{
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return null;
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}
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for (final Control control : controls)
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{
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if (control.getOID().equals(decoder.getOID()))
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{
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// Got a match. Return a defensive copy only if necessary.
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final C decodedControl = decoder.decodeControl(control, options);
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if (decodedControl != control)
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{
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// This was not the original control so return it immediately.
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return decodedControl;
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}
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else if (decodedControl instanceof GenericControl)
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{
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// Generic controls are immutable, so return it immediately.
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return decodedControl;
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}
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else
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{
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// Re-decode to get defensive copy.
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final GenericControl genericControl = GenericControl
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.newControl(control);
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return decoder.decodeControl(genericControl, options);
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}
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}
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}
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return null;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public final List<Control> getControls()
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{
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// We need to make all controls unmodifiable as well, which implies making
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// defensive copies where necessary.
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final Function<Control, Control, Void> function = new Function<Control, Control, Void>()
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{
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@Override
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public Control apply(final Control value, final Void p)
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{
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// Return defensive copy.
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return GenericControl.newControl(value);
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}
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};
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final List<Control> unmodifiableControls = Collections2.transformedList(
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impl.getControls(), function, Functions.<Control> identityFunction());
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return Collections.unmodifiableList(unmodifiableControls);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public final String toString()
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{
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return impl.toString();
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}
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}
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