01: /**
02: *
03: * Licensed to the Apache Software Foundation (ASF) under one or more
04: * contributor license agreements. See the NOTICE file distributed with
05: * this work for additional information regarding copyright ownership.
06: * The ASF licenses this file to You under the Apache License, Version 2.0
07: * (the "License"); you may not use this file except in compliance with
08: * the License. You may obtain a copy of the License at
09: *
10: * http://www.apache.org/licenses/LICENSE-2.0
11: *
12: * Unless required by applicable law or agreed to in writing, software
13: * distributed under the License is distributed on an "AS IS" BASIS,
14: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15: * See the License for the specific language governing permissions and
16: * limitations under the License.
17: */package org.apache.openejb.core.cmp;
18:
19: import java.lang.reflect.Field;
20: import javax.ejb.EntityBean;
21:
22: import org.apache.openejb.OpenEJBException;
23:
24: public class SimpleKeyGenerator extends AbstractKeyGenerator {
25: private final Field pkField;
26:
27: public SimpleKeyGenerator(Class beanClass, String pkField)
28: throws OpenEJBException {
29: this .pkField = getField(beanClass, pkField);
30: if (!isValidPkField(this .pkField)) {
31: throw new OpenEJBException("Invalid primray key field: "
32: + pkField);
33: }
34: }
35:
36: public Object getPrimaryKey(EntityBean bean) {
37: Object value = getFieldValue(pkField, bean);
38: return value;
39: }
40: }
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