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1   package ca.uhn.fhir.context;
2   
3   /*
4    * #%L
5    * HAPI FHIR - Core Library
6    * %%
7    * Copyright (C) 2014 - 2018 University Health Network
8    * %%
9    * Licensed under the Apache License, Version 2.0 (the "License");
10   * you may not use this file except in compliance with the License.
11   * You may obtain a copy of the License at
12   * 
13   *      http://www.apache.org/licenses/LICENSE-2.0
14   * 
15   * Unless required by applicable law or agreed to in writing, software
16   * distributed under the License is distributed on an "AS IS" BASIS,
17   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18   * See the License for the specific language governing permissions and
19   * limitations under the License.
20   * #L%
21   */
22  
23  import java.lang.reflect.Field;
24  
25  import org.hl7.fhir.instance.model.api.IBase;
26  
27  import ca.uhn.fhir.model.api.annotation.Child;
28  import ca.uhn.fhir.model.api.annotation.Description;
29  
30  public class RuntimeChildPrimitiveEnumerationDatatypeDefinition extends RuntimeChildPrimitiveDatatypeDefinition {
31  
32  	private Object myBinder;
33  	private Class<? extends Enum<?>> myEnumType;
34  
35  	public RuntimeChildPrimitiveEnumerationDatatypeDefinition(Field theField, String theElementName, Child theChildAnnotation, Description theDescriptionAnnotation,  Class<? extends IBase> theDatatype, Class<? extends Enum<?>> theBinderType) {
36  		super(theField, theElementName, theDescriptionAnnotation, theChildAnnotation, theDatatype);
37  
38  		myEnumType = theBinderType;
39  	}
40  
41  	@Override
42  	public Class<? extends Enum<?>> getBoundEnumType() {
43  		return myEnumType;
44  	}
45  
46  	@Override
47  	public Object getInstanceConstructorArguments() {
48  		Object retVal = myBinder;
49  		if (retVal == null) {
50  			retVal = toEnumFactory(myEnumType);
51  			myBinder = retVal;
52  		}
53  		return retVal;
54  	}
55  
56  	static Object toEnumFactory(Class<?> theEnumerationType) {
57  		Class<?> clazz;
58  		String className = theEnumerationType.getName() + "EnumFactory";
59  		Object retVal;
60  		try {
61  			clazz = Class.forName(className);
62  			retVal = clazz.newInstance();
63  		} catch (Exception e) {
64  			throw new ConfigurationException("Failed to instantiate " + className, e);
65  		}
66  		return retVal;
67  	}
68  
69  }