org.apache.wicket.injection.IFieldValueFactory.java Source code

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Here is the source code for org.apache.wicket.injection.IFieldValueFactory.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.wicket.injection;

import java.lang.reflect.Field;

/**
 * Factory object used by injector to generate values for fields of the object being injected.
 * 
 * @author Igor Vaynberg (ivaynberg)
 * 
 */
public interface IFieldValueFactory {
    /**
     * Returns the value the field will be set to
     * 
     * @param field
     *            field being injected
     * @param fieldOwner
     *            instance of object being injected
     * 
     * @return new field value
     */
    Object getFieldValue(Field field, Object fieldOwner);

    /**
     * Returns true if the factory can generate a value for the field, false otherwise.
     * 
     * If this method returns false, getFieldValue() will not be called on this factory
     * 
     * @param field
     *            field
     * @return true if the factory can generate a value for the field, false otherwise
     */
    boolean supportsField(Field field);
}