001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.binding;
016    
017    import org.apache.hivemind.Location;
018    import org.apache.tapestry.IBinding;
019    import org.apache.tapestry.IComponent;
020    import org.apache.tapestry.services.ExpressionCache;
021    import org.apache.tapestry.services.ExpressionEvaluator;
022    
023    /**
024     * Implementation of {@link org.apache.tapestry.binding.BindingFactory}that creates
025     * {@link org.apache.tapestry.binding.ExpressionBinding}instances.
026     * 
027     * @author Howard Lewis Ship
028     * @since 4.0
029     */
030    public class OGNLBindingFactory extends AbstractBindingFactory
031    {
032        private ExpressionEvaluator _expressionEvaluator;
033    
034        private ExpressionCache _expressionCache;
035    
036        public IBinding createBinding(IComponent root, String description, String expression, Location location)
037        {
038            return new ExpressionBinding(description, location, getValueConverter(), root, expression,
039                    _expressionEvaluator, _expressionCache);
040        }
041    
042        public void setExpressionCache(ExpressionCache expressionCache)
043        {
044            _expressionCache = expressionCache;
045        }
046    
047        public void setExpressionEvaluator(ExpressionEvaluator expressionEvaluator)
048        {
049            _expressionEvaluator = expressionEvaluator;
050        }
051    }