org.openxava.util
Class Is

java.lang.Object
  org.openxava.util.Is

public class Is
extends java.lang.Object

Utility class to reduce the ifs size.

Util to implements asserts (invaritant, preconditions, postcondition).
For example:

 if (name != null || name.trim().equals("") ||
   surname1 != null || surname1.trim().equals("")) ||
   surname2 != null || surname2.trim().equals(""))
 {
   doSomething();
 }
 

can be write:

 if (Is.emptyString(name, surname1, surname2)) {
   doSomethis();
 }
 

Author:

Javier Paniza

Constructor Summary

Is()

Method Summary

static boolean	empty(java.lang.Object object) Verifies if the sent object is null or empty string (if it's string) or 0 (if it's number) or empty Map.
static boolean	emptyString(java.lang.String string) Verifies if the sent string is null or empty string.
static boolean	emptyString(java.lang.String string1, java.lang.String string2) Verifies if some of the sent strings are null or empty string.
static boolean	emptyString(java.lang.String string1, java.lang.String string2, java.lang.String string3) Verifies if some of the sent strings are null or empty string.
static boolean	emptyString(java.lang.String string1, java.lang.String string2, java.lang.String string3, java.lang.String string4) Verifies if some of the sent strings are null or empty string.
static boolean	emptyString(java.lang.String string1, java.lang.String string2, java.lang.String string3, java.lang.String string4, java.lang.String string5) Verifies if some of the sent strings are null or empty string.
static boolean	emptyString(java.lang.String string1, java.lang.String string2, java.lang.String string3, java.lang.String string4, java.lang.String string5, java.lang.String string6) Verifies if some of the sent strings are null or empty string.
static boolean	emptyStringAll(java.lang.String string1, java.lang.String string2) Verifies if all sent strings are null or empty string.
static boolean	emptyStringAll(java.lang.String string1, java.lang.String string2, java.lang.String string3) Verifies if all sent strings are null or empty string.
static boolean	emptyStringAll(java.lang.String string1, java.lang.String string2, java.lang.String string3, java.lang.String string4) Verifies if all sent strings are null or empty string.
static boolean	emptyStringAll(java.lang.String string1, java.lang.String string2, java.lang.String string3, java.lang.String string4, java.lang.String string5) Verifies if all sent strings are null or empty string.
static boolean	emptyStringAll(java.lang.String string1, java.lang.String string2, java.lang.String string3, java.lang.String string4, java.lang.String string5, java.lang.String string6) Verifies if all sent strings are null or empty string.
static boolean	equal(java.lang.Object a, java.lang.Object b) If a is equals to b.
static boolean	equalAsString(java.lang.Object a, java.lang.Object b) If a.toString().trim() is equals to b.toString().trim().
static boolean	equalAsStringIgnoreCase(java.lang.Object a, java.lang.Object b) If a.toString().trim() is equal to b.toString().trim() ignoring case.

Methods inherited from class java.lang.Object

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

Constructor Detail

Is

public Is()

Method Detail

empty

public static final boolean empty(java.lang.Object object)

Verifies if the sent object is null or empty string (if it's string) or 0 (if it's number) or empty Map.

emptyString

public static final boolean emptyString(java.lang.String string)

Verifies if the sent string is null or empty string.

emptyString

public static final boolean emptyString(java.lang.String string1,
                                        java.lang.String string2)

Verifies if some of the sent strings are null or empty string.

emptyString

public static final boolean emptyString(java.lang.String string1,
                                        java.lang.String string2,
                                        java.lang.String string3)

Verifies if some of the sent strings are null or empty string.

emptyString

public static final boolean emptyString(java.lang.String string1,
                                        java.lang.String string2,
                                        java.lang.String string3,
                                        java.lang.String string4)

Verifies if some of the sent strings are null or empty string.

emptyString

public static final boolean emptyString(java.lang.String string1,
                                        java.lang.String string2,
                                        java.lang.String string3,
                                        java.lang.String string4,
                                        java.lang.String string5)

Verifies if some of the sent strings are null or empty string.

emptyString

public static final boolean emptyString(java.lang.String string1,
                                        java.lang.String string2,
                                        java.lang.String string3,
                                        java.lang.String string4,
                                        java.lang.String string5,
                                        java.lang.String string6)

Verifies if some of the sent strings are null or empty string.

equal

public static final boolean equal(java.lang.Object a,
                                  java.lang.Object b)

If a is equals to b.

Takes in account the nulls. Use compareTo when appropriate and compares Java 5 enums with numbers by the ordinal value. Compares Integer, Long, Short among themselves.
Also admits to compare objects of not compatible types, just it returns false in this case.

Parameters:

a - Can be null.

b - Can be null.

equalAsString

public static final boolean equalAsString(java.lang.Object a,
                                          java.lang.Object b)

If a.toString().trim() is equals to b.toString().trim().

Takes in account the nulls.

Parameters:

a - Can be null.

b - Can be null.

equalAsStringIgnoreCase

public static final boolean equalAsStringIgnoreCase(java.lang.Object a,
                                                    java.lang.Object b)

If a.toString().trim() is equal to b.toString().trim() ignoring case.

Takes in account the nulls.

Parameters:

a - Can be null.

b - Can be null.

emptyStringAll

public static final boolean emptyStringAll(java.lang.String string1,
                                           java.lang.String string2)

Verifies if all sent strings are null or empty string.

emptyStringAll

public static final boolean emptyStringAll(java.lang.String string1,
                                           java.lang.String string2,
                                           java.lang.String string3)

Verifies if all sent strings are null or empty string.

emptyStringAll

public static final boolean emptyStringAll(java.lang.String string1,
                                           java.lang.String string2,
                                           java.lang.String string3,
                                           java.lang.String string4)

Verifies if all sent strings are null or empty string.

emptyStringAll

public static final boolean emptyStringAll(java.lang.String string1,
                                           java.lang.String string2,
                                           java.lang.String string3,
                                           java.lang.String string4,
                                           java.lang.String string5)

Verifies if all sent strings are null or empty string.

emptyStringAll

public static final boolean emptyStringAll(java.lang.String string1,
                                           java.lang.String string2,
                                           java.lang.String string3,
                                           java.lang.String string4,
                                           java.lang.String string5,
                                           java.lang.String string6)

Verifies if all sent strings are null or empty string.