org.kuali.common.util.nullify
Class NullUtils

java.lang.Object
  org.kuali.common.util.nullify.NullUtils

public class NullUtils
extends Object

Field Summary

static String	NONE
static String	NULL

Constructor Summary

NullUtils()

Method Summary

static boolean	isBlank(Object object) Return true if object is a non null CharSequence that is pure whitespace
static boolean	isNone(String s) Return true if:
static boolean	isNull(String s) Return true if:
static boolean	isNullOrBlank(Object object) Return true if object is null OR a non null CharSequence that is pure whitespace
static boolean	isNullOrNone(String s) Return true iff:
static com.google.common.base.Optional<String>	toAbsent(String s) Returns Optional.absent() if s is null, the empty string, pure whitespace, NONE, or NULL
static String	toNone(com.google.common.base.Optional<String> optional) Returns NONE if optional is not present OR if it contains the empty string, pure whitespace, NONE, or NULL
static String	trimToNone(String s) Returns NONE if s is null, the empty string, pure whitespace, NONE, or NULL
static String	trimToNull(String s) Returns null if s is null, the empty string, pure whitespace, NONE, or NULL

Methods inherited from class java.lang.Object

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

Field Detail

NONE

public static final String NONE

See Also:

Constant Field Values

NULL

public static final String NULL

See Also:

Constant Field Values

Constructor Detail

NullUtils

public NullUtils()

Method Detail

isBlank

public static boolean isBlank(Object object)

Return true if object is a non null CharSequence that is pure whitespace

isNullOrBlank

public static boolean isNullOrBlank(Object object)

Return true if object is null OR a non null CharSequence that is pure whitespace

isNull

public static final boolean isNull(String s)

Return true if:

  s == null
  StringUtils.equalsIgnoreCase("null", s) == true
 

isNone

public static final boolean isNone(String s)

Return true if:

 StringUtils.equalsIgnoreCase("none", s) == true
 

isNullOrNone

public static final boolean isNullOrNone(String s)

Return true iff:

  s == null
  StringUtils.equalsIgnoreCase("null", s) == true
  StringUtils.equalsIgnoreCase("none", s) == true
 

toAbsent

public static final com.google.common.base.Optional<String> toAbsent(String s)

Returns Optional.absent() if s is null, the empty string, pure whitespace, NONE, or NULL

toNone

public static final String toNone(com.google.common.base.Optional<String> optional)

Returns NONE if optional is not present OR if it contains the empty string, pure whitespace, NONE, or NULL

trimToNull

public static final String trimToNull(String s)

Returns null if s is null, the empty string, pure whitespace, NONE, or NULL

trimToNone

public static final String trimToNone(String s)

Returns NONE if s is null, the empty string, pure whitespace, NONE, or NULL