org.infinispan.commons.util.BeanUtils Maven / Gradle / Ivy
package org.infinispan.commons.util;
import java.lang.reflect.Method;
import java.util.Locale;
/**
* Simple JavaBean manipulation helper methods
*
* @author Manik Surtani ([email protected])
* @since 4.0
*/
public class BeanUtils {
/**
* Retrieves a setter name based on a field name passed in
*
* @param fieldName field name to find setter for
* @return name of setter method
*/
public static String setterName(String fieldName) {
StringBuilder sb = new StringBuilder("set");
if (fieldName != null && fieldName.length() > 0) {
sb.append(fieldName.substring(0, 1).toUpperCase(Locale.ENGLISH));
if (fieldName.length() > 1) {
sb.append(fieldName.substring(1));
}
}
return sb.toString();
}
/**
* Retrieves a setter name based on a field name passed in
*
* @param fieldName field name to find setter for
* @return name of setter method
*/
public static String fluentSetterName(String fieldName) {
StringBuilder sb = new StringBuilder();
if (fieldName != null && fieldName.length() > 0) {
sb.append(fieldName.substring(0, 1));
if (fieldName.length() > 1) {
sb.append(fieldName.substring(1));
}
}
return sb.toString();
}
/**
* Returns a getter for a given class
*
* @param componentClass class to find getter for
* @return name of getter method
*/
public static String getterName(Class componentClass) {
if (componentClass == null) return null;
StringBuilder sb = new StringBuilder("get");
sb.append(componentClass.getSimpleName());
return sb.toString();
}
/**
* Returns a setter for a given class
*
* @param componentClass class to find setter for
* @return name of getter method
*/
public static String setterName(Class componentClass) {
if (componentClass == null) return null;
StringBuilder sb = new StringBuilder("set");
sb.append(componentClass.getSimpleName());
return sb.toString();
}
/**
* Returns a Method object corresponding to a getter that retrieves an instance of componentClass from target.
*
* @param target class that the getter should exist on
* @param componentClass component to get
* @return Method object, or null of one does not exist
*/
public static Method getterMethod(Class target, Class componentClass) {
try {
return target.getMethod(getterName(componentClass));
}
catch (NoSuchMethodException e) {
//if (log.isTraceEnabled()) log.trace("Unable to find method " + getterName(componentClass) + " in class " + target);
return null;
}
catch (NullPointerException e) {
return null;
}
}
/**
* Returns a Method object corresponding to a setter that sets an instance of componentClass from target.
*
* @param target class that the setter should exist on
* @param componentClass component to set
* @return Method object, or null of one does not exist
*/
public static Method setterMethod(Class target, Class componentClass) {
try {
return target.getMethod(setterName(componentClass), componentClass);
}
catch (NoSuchMethodException e) {
//if (log.isTraceEnabled()) log.trace("Unable to find method " + setterName(componentClass) + " in class " + target);
return null;
}
catch (NullPointerException e) {
return null;
}
}
}