001    /**
002     * Copyright 2005-2014 The Kuali Foundation
003     *
004     * Licensed under the Educational Community License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.opensource.org/licenses/ecl2.php
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    package org.kuali.rice.krms.framework.engine.expression;
017    
018    import org.kuali.rice.krms.api.engine.ExecutionEnvironment;
019    import org.kuali.rice.krms.api.engine.Term;
020    import org.kuali.rice.krms.api.engine.TermResolutionException;
021    
022    /**
023     * An implementation of {@link Expression} which resolves the given {@link Term}.
024     * 
025     * @author Kuali Rice Team (rice.collab@kuali.org)
026     *
027     */
028    public final class TermExpression implements Expression<Object> {
029    
030            private final Term term;
031    
032        /**
033         * Create a TermExpression with the given value
034         * @param term {@link Term} to invoke upon.
035         */
036            public TermExpression(Term term) {
037                    this.term = term;
038            }
039    
040            /**
041             * @see org.kuali.rice.krms.framework.engine.expression.Expression#invoke(org.kuali.rice.krms.api.engine.ExecutionEnvironment)
042             * @throws TermResolutionException if there is a problem resolving the {@link Term}
043             */
044            @Override
045            public Object invoke(ExecutionEnvironment environment) {
046                return environment.resolveTerm(term, this);
047            }
048    
049    }