private PropertyDescriptor findExistingPropertyDescriptor(
String propertyName, Class<?> propertyType) {
for (PropertyDescriptor pd : this.propertyDescriptors) {
final Class<?> candidateType;
final String candidateName = pd.getName();
if (pd instanceof IndexedPropertyDescriptor) {
IndexedPropertyDescriptor ipd = (IndexedPropertyDescriptor) pd;
candidateType = ipd.getIndexedPropertyType();
if (candidateName.equals(propertyName)
&& (candidateType.equals(propertyType)
|| candidateType.equals(propertyType.getComponentType()))) {
return pd;
}
} else {
candidateType = pd.getPropertyType();
if (candidateName.equals(propertyName)
&& (candidateType.equals(propertyType)
|| propertyType.equals(candidateType.getComponentType()))) {
return pd;
}
}
}
return null;
}
/*
* See IndexedPropertyDescriptor#findIndexedPropertyType
*/
public static Class<?> findIndexedPropertyType(
String name, Class<?> propertyType, Method indexedReadMethod, Method indexedWriteMethod)
throws IntrospectionException {
Class<?> indexedPropertyType = null;
if (indexedReadMethod != null) {
Class<?> params[] = indexedReadMethod.getParameterTypes();
if (params.length != 1) {
throw new IntrospectionException("bad indexed read method arg count");
}
if (params[0] != Integer.TYPE) {
throw new IntrospectionException("non int index to indexed read method");
}
indexedPropertyType = indexedReadMethod.getReturnType();
if (indexedPropertyType == Void.TYPE) {
throw new IntrospectionException("indexed read method returns void");
}
}
if (indexedWriteMethod != null) {
Class<?> params[] = indexedWriteMethod.getParameterTypes();
if (params.length != 2) {
throw new IntrospectionException("bad indexed write method arg count");
}
if (params[0] != Integer.TYPE) {
throw new IntrospectionException("non int index to indexed write method");
}
if (indexedPropertyType != null && indexedPropertyType != params[1]) {
throw new IntrospectionException(
"type mismatch between indexed read and indexed write methods: " + name);
}
indexedPropertyType = params[1];
}
if (propertyType != null
&& (!propertyType.isArray() || propertyType.getComponentType() != indexedPropertyType)) {
throw new IntrospectionException(
"type mismatch between indexed and non-indexed methods: " + name);
}
return indexedPropertyType;
}