/**
* Sets the method that should be used to read the property value.
*
* @param readMethod The new read method.
*/
public synchronized void setReadMethod(Method readMethod) throws IntrospectionException {
if (readMethod == null) {
readMethodName = null;
readMethodRef = null;
return;
}
// The property type is determined by the read method.
setPropertyType(findPropertyType(readMethod, getWriteMethod0()));
setClass0(readMethod.getDeclaringClass());
readMethodName = readMethod.getName();
readMethodRef = createReference(readMethod, true);
}
/**
* Sets the method that should be used to write the property value.
*
* @param writeMethod The new write method.
*/
public synchronized void setWriteMethod(Method writeMethod) throws IntrospectionException {
if (writeMethod == null) {
writeMethodName = null;
writeMethodRef = null;
return;
}
// Set the property type - which validates the method
setPropertyType(findPropertyType(getReadMethod(), writeMethod));
setClass0(writeMethod.getDeclaringClass());
writeMethodName = writeMethod.getName();
writeMethodRef = createReference(writeMethod, true);
}
/**
* This constructor takes the name of a simple property, and method names for reading and writing
* the property.
*
* @param propertyName The programmatic name of the property.
* @param beanClass The Class object for the target bean. For example sun.beans.OurButton.class.
* @param readMethodName The name of the method used for reading the property value. May be null
* if the property is write-only.
* @param writeMethodName The name of the method used for writing the property value. May be null
* if the property is read-only.
* @exception IntrospectionException if an exception occurs during introspection.
*/
public PropertyDescriptor(
String propertyName, Class<?> beanClass, String readMethodName, String writeMethodName)
throws IntrospectionException {
if (beanClass == null) {
throw new IntrospectionException("Target Bean class is null");
}
if (propertyName == null || propertyName.length() == 0) {
throw new IntrospectionException("bad property name");
}
if ("".equals(readMethodName) || "".equals(writeMethodName)) {
throw new IntrospectionException("read or write method name should not be the empty string");
}
setName(propertyName);
setClass0(beanClass);
this.readMethodName = readMethodName;
if (readMethodName != null && getReadMethod() == null) {
throw new IntrospectionException("Method not found: " + readMethodName);
}
this.writeMethodName = writeMethodName;
if (writeMethodName != null && getWriteMethod() == null) {
throw new IntrospectionException("Method not found: " + writeMethodName);
}
}