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OpenJPA Kernel

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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.openjpa.enhance;

/**
 * Supplies persistent field values.
 */
public interface FieldSupplier {

    /**
     * Return the value of the given field.
     */
    boolean fetchBooleanField(int fieldIndex);

    /**
     * Return the value of the given field.
     */
    char fetchCharField(int fieldIndex);

    /**
     * Return the value of the given field.
     */
    byte fetchByteField(int fieldIndex);

    /**
     * Return the value of the given field.
     */
    short fetchShortField(int fieldIndex);

    /**
     * Return the value of the given field.
     */
    int fetchIntField(int fieldIndex);

    /**
     * Return the value of the given field.
     */
    long fetchLongField(int fieldIndex);

    /**
     * Return the value of the given field.
     */
    float fetchFloatField(int fieldIndex);

    /**
     * Return the value of the given field.
     */
    double fetchDoubleField(int fieldIndex);

    /**
     * Return the value of the given field.
     */
    String fetchStringField(int fieldIndex);

    /**
     * Return the value of the given field.
     */
    Object fetchObjectField (int fieldIndex);
}