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jamesagnew 2015-10-12 20:05:21 -04:00
parent cb886c2975
commit 81a90ecca8
1 changed files with 68 additions and 0 deletions
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hapi-fhir-base/src/main/java/ca/uhn/fhir/util/BeanUtils.java Normal file
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package ca.uhn.fhir.util;
/*
* #%L
* HAPI FHIR - Core Library
* %%
* Copyright (C) 2014 - 2015 University Health Network
* %%
* Licensed 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.
* #L%
*/
import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
public class BeanUtils {
public static Method findAccessor(Class<?> theClassToIntrospect, Class<?> theTargetReturnType, String thePropertyName) throws NoSuchFieldException {
BeanInfo info;
try {
info = Introspector.getBeanInfo(theClassToIntrospect);
} catch (IntrospectionException e) {
throw new NoSuchFieldException(e.getMessage());
}
for (PropertyDescriptor pd : info.getPropertyDescriptors()) {
if (thePropertyName.equals(pd.getName())) {
if (theTargetReturnType.isAssignableFrom(pd.getPropertyType())) {
return pd.getReadMethod();
}else {
throw new NoSuchFieldException(theClassToIntrospect + " has an accessor for field " + thePropertyName + " but it does not return type " + theTargetReturnType);
}
}
}
throw new NoSuchFieldException(theClassToIntrospect + " has no accessor for field " + thePropertyName);
}
public static Method findMutator(Class<?> theClassToIntrospect, Class<?> theTargetReturnType, String thePropertyName) throws NoSuchFieldException {
BeanInfo info;
try {
info = Introspector.getBeanInfo(theClassToIntrospect);
} catch (IntrospectionException e) {
throw new NoSuchFieldException(e.getMessage());
}
for (PropertyDescriptor pd : info.getPropertyDescriptors()) {
if (thePropertyName.equals(pd.getName())) {
if (theTargetReturnType.isAssignableFrom(pd.getPropertyType())) {
return pd.getWriteMethod();
}else {
throw new NoSuchFieldException(theClassToIntrospect + " has an mutator for field " + thePropertyName + " but it does not return type " + theTargetReturnType);
}
}
}
throw new NoSuchFieldException(theClassToIntrospect + " has no mutator for field " + thePropertyName);
}
}