# InjectedParametersDetailDescriptor.java

    /*
     * Copyright (c) 2008, Edward Yakop. All Rights Reserved.
     *
     * 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.qi4j.tools.model.descriptor;

    import org.qi4j.api.composite.InjectedParametersDescriptor;

    import static org.qi4j.api.util.NullArgumentException.validateNotNull;

    public class InjectedParametersDetailDescriptor
    {
        private final InjectedParametersDescriptor descriptor;
        private ConstructorDetailDescriptor constructor;
        private InjectedMethodDetailDescriptor method;

        InjectedParametersDetailDescriptor( InjectedParametersDescriptor aDescriptor )
            throws IllegalArgumentException
        {
            validateNotNull( "aDescriptor", aDescriptor );

            descriptor = aDescriptor;
        }

        /**
         * @return Descriptor of this {@code InjectedParametersDetailDescriptor}. Never returns {@code null}.
         *
         * @since 0.5
         */
        public final InjectedParametersDescriptor descriptor()
        {
            return descriptor;
        }

        /**
         * @return Constructor that owns this {@code InjectedParametersDetailDescriptor}.
         *         If {@code null}, this {@code InjectedParametersDetailDescriptor} is owned by a method.
         *
         * @see #method()
         * @since 0.5
         */
        public final ConstructorDetailDescriptor constructor()
        {
            return constructor;
        }

        /**
         * @return Method that owns this {@code InjectedParametersDetailDescriptor}.
         *         If {@code null}, this {@code InjectedParametersDetailDescriptor} is owned by a constructor.
         *
         * @see #constructor() ()
         * @since 0.5
         */
        public final InjectedMethodDetailDescriptor method()
        {
            return method;
        }

        final void setConstructor( ConstructorDetailDescriptor aDescriptor )
            throws IllegalArgumentException
        {
            validateNotNull( "aDescriptor", aDescriptor );
            constructor = aDescriptor;
        }

        final void setMethod( InjectedMethodDetailDescriptor aDescriptor )
            throws IllegalArgumentException
        {
            validateNotNull( "aDescriptor", aDescriptor );
            method = aDescriptor;
        }
    }