com.neeve.util

Class UtlDataTypes

java.lang.Object

com.neeve.util.UtlDataTypes

public class UtlDataTypes
extends Object

Provides utilities for data type conversions.

This class MAY be used by end users, however it is not supported.

Constructor Summary

Constructors

Constructor and Description
UtlDataTypes()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	canConvert(Class<?> sourceType, Class<?> targetType) Tests if a source type can be converted to a target type by this class.
static <T> T	convert(Class<T> targetType, Object value)
static <T> T	convertNumber(Class<T> targetType, Number num)
static String[]	getEnumNames(Class<?> enumClass)
static Date	parseAsDate(Object value) Attempts to parse the given value as a date.

Methods inherited from class java.lang.Object

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

Constructor Detail

UtlDataTypes

public UtlDataTypes()

Method Detail

canConvert

public static final boolean canConvert(Class<?> sourceType,
                 Class<?> targetType)

Tests if a source type can be converted to a target type by this class.

Parameters:

sourceType - The source type.

targetType - The target type.

Returns:

true if the source can be conerted to the target

convert

public static <T> T convert(Class<T> targetType,
            Object value)

convertNumber

public static <T> T convertNumber(Class<T> targetType,
                  Number num)

parseAsDate

public static final Date parseAsDate(Object value)
                              throws IllegalArgumentException

Attempts to parse the given value as a date.

If the given value is a date, the it is returned.

If the given value is a long, then it used to construct a date interpreted as the number of milliseconds since the epoch, e.g a Date is constructed using new Date.Date(long)

Otherwise the value's toString method will be invoked and an attempt will be made to parse it as a Date:

• First an attempt is made to parse the date with the format:

   yyyy-MM-dd hh:mm:ss[.f...] [Z]
   

  where the first 2 token are passed into the the sql Timestamp.valueOf(String) and the final remaining argument is parsed via TimeZone.getTimeZone(String).
• Failing the above an attempt is made to process the string as a date using JChronic via Chronic.parse(String) interrepeted as a date in the past. If the resulting parse produces a timespan the beginning of the timespan range is used

Parameters:

value - The value to parse as a date.

Returns:

The parsed date.

Throws:

IllegalArgumentException

getEnumNames

public static String[] getEnumNames(Class<?> enumClass)

Parameters:

enumClass - The class on which to look up enum values.

Returns:

The list of the enum names as they are defined in source.