001    /**
002     Licensed to the Apache Software Foundation (ASF) under one or more
003     contributor license agreements.  See the NOTICE file distributed with
004     this work for additional information regarding copyright ownership.
005     The ASF licenses this file to You under the Apache License, Version 2.0
006     (the "License"); you may not use this file except in compliance with
007     the License.  You may obtain a copy of the License at
008    
009          http://www.apache.org/licenses/LICENSE-2.0
010    
011     Unless required by applicable law or agreed to in writing, software
012     distributed under the License is distributed on an "AS IS" BASIS,
013     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     See the License for the specific language governing permissions and
015     limitations under the License.
016    */
017    package org.apache.commons.inject.impl;
018    
019    import java.lang.reflect.Field;
020    
021    import org.apache.commons.inject.api.IBinding;
022    import org.apache.commons.inject.api.IInjector;
023    import org.apache.commons.inject.api.IPoint;
024    import org.apache.commons.inject.util.Exceptions;
025    
026    public class FieldPoint<T> implements IPoint<T>, IInjectorAware {
027            private final IBinding<Object> binding;
028            private final Field f;
029    
030            FieldPoint(IBinding<Object> pBinding, Field pF) {
031                    binding = pBinding;
032                    f = pF;
033            }
034    
035            @Override
036            public void injectTo(T pInstance, IInjector pInjector) {
037                    try {
038                            if (!f.isAccessible()) {
039                                    f.setAccessible(true);
040                            }
041                            final Object value = binding.getProvider().get();
042                            f.set(pInstance, value);
043                    } catch (Throwable t) {
044                            throw Exceptions.show(t);
045                    }
046            }
047    
048            @Override
049            public void init(IInjector pInjector) {
050                    if (binding instanceof IInjectorAware) {
051                            ((IInjectorAware) binding).init(pInjector);
052                    }
053            }
054    }