# ManyAssociationContainsSpecification.java

    /*
     * Copyright 2007-2011 Rickard Öberg.
     * Copyright 2007-2010 Niclas Hedhman.
     *
     * 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
     * ied.
     *
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */
    package org.qi4j.api.query.grammar;

    import org.qi4j.api.association.ManyAssociation;
    import org.qi4j.api.composite.Composite;

    /**
     * ManyAssociation Contains Specification.
     */
    public class ManyAssociationContainsSpecification<T>
        extends ExpressionSpecification
    {
        private final ManyAssociationFunction<T> manyAssociationFunction;
        private final T value;

        public ManyAssociationContainsSpecification( ManyAssociationFunction<T> manyAssociationFunction, T value )
        {
            this.manyAssociationFunction = manyAssociationFunction;
            this.value = value;
        }

        public ManyAssociationFunction<T> manyAssociation()
        {
            return manyAssociationFunction;
        }

        public T value()
        {
            return value;
        }

        @Override
        public boolean satisfiedBy( Composite item )
        {
            ManyAssociation<T> collection = manyAssociationFunction.map( item );
            if( collection == null )
            {
                return false;
            }
            return collection.contains( value );
        }

        @Override
        public String toString()
        {
            return manyAssociationFunction + " contains:" + value;
        }
    }