kodo.query
Class Filters

java.lang.Object
  |
  +--kodo.query.Filters

public class Filters

extends Object

Helper methods for dealing with JDOQL.

Constructor Summary

Filters()

Method Summary

static Object	add(Object o1, Class c1, Object o2, Class c2) Add the given values.
static boolean	canConvert(Class c1, Class c2) Return whether an instance of the first class can be converted to an instance of the second.
static Object	convert(Object o, Class type) Convert the given value to the given type.
static Object	divide(Object o1, Class c1, Object o2, Class c2) Divide the given values.
static Object	mod(Object o1, Class c1, Object o2, Class c2) Mod the given values.
static Object	multiply(Object o1, Class c1, Object o2, Class c2) Multiply the given values.
static Class	promote(Class c1, Class c2) Given two numeric types, return type they should both be converted to before performing any mathematical operations between them.
static Object	subtract(Object o1, Class c1, Object o2, Class c2) Subtract the given values.
static Class	unwrap(Class c) Return the correct primitive type for the given class, if it is a wrapper.
static Class	wrap(Class c) Return the correct wrapper type for the given class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Filters

public Filters()

Method Detail

wrap

public static Class wrap(Class c)

Return the correct wrapper type for the given class.

unwrap

public static Class unwrap(Class c)

Return the correct primitive type for the given class, if it is a wrapper.

promote

public static Class promote(Class c1,
                            Class c2)

Given two numeric types, return type they should both be converted to before performing any mathematical operations between them. See the JDO spec rules for type promotion.

canConvert

public static boolean canConvert(Class c1,
                                 Class c2)

Return whether an instance of the first class can be converted to an instance of the second.

convert

public static Object convert(Object o,
                             Class type)

Convert the given value to the given type.

add

public static Object add(Object o1,
                         Class c1,
                         Object o2,
                         Class c2)

Add the given values.

subtract

public static Object subtract(Object o1,
                              Class c1,
                              Object o2,
                              Class c2)

Subtract the given values.

multiply

public static Object multiply(Object o1,
                              Class c1,
                              Object o2,
                              Class c2)

Multiply the given values.

divide

public static Object divide(Object o1,
                            Class c1,
                            Object o2,
                            Class c2)

Divide the given values.

mod

public static Object mod(Object o1,
                         Class c1,
                         Object o2,
                         Class c2)

Mod the given values.