org.semanticweb.owlapi.util

Class OWLAPIPreconditions

java.lang.Object

org.semanticweb.owlapi.util.OWLAPIPreconditions

public final class OWLAPIPreconditions
extends Object

a set of personalized preconditions

Method Summary

Modifier and Type	Method and Description
static void	checkNotNegative(long object) check for negative value and throw IllegalArgumentException if negative
static void	checkNotNegative(long object, String message) check for negative value and throw IllegalArgumentException if negative
static <T> T	checkNotNull(com.google.common.base.Optional<T> object, String message) check for absent and throw IllegalArgumentException if null or absent
static <T> T	checkNotNull(T object) check for null and throw NullPointerException if null
static <T> T	checkNotNull(T object, String message) check for null and throw NullPointerException if null
static <T> T	verifyNotNull(T object) Check that the argument is not null; if the argument is null, throw an IllegalStateException.
static <T> T	verifyNotNull(T object, String message) Check that the argument is not null; if the argument is null, throw an IllegalStateException.

Methods inherited from class java.lang.Object

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

Method Detail

verifyNotNull

@Nonnull
public static <T> T verifyNotNull(T object)

Check that the argument is not null; if the argument is null, throw an IllegalStateException. This method is meant to be used to verify conditions on member variables rather than input parameters.

Type Parameters:

T - reference type

Parameters:

object - reference to check

Returns:

the input reference if not null

Throws:

IllegalStateException - if object is null

verifyNotNull

@Nonnull
public static <T> T verifyNotNull(T object,
                                           @Nonnull
                                           String message)

Check that the argument is not null; if the argument is null, throw an IllegalStateException. This method is meant to be used to verify conditions on member variables rather than input parameters.

Type Parameters:

T - reference type

Parameters:

object - reference to check

message - message to use for the error

Returns:

the input reference if not null

Throws:

IllegalStateException - if object is null

checkNotNull

@Nonnull
public static <T> T checkNotNull(T object)

check for null and throw NullPointerException if null

Type Parameters:

T - reference type

Parameters:

object - reference to check

Returns:

the input reference if not null

Throws:

NullPointerException - if object is null

checkNotNull

@Nonnull
public static <T> T checkNotNull(T object,
                                          @Nonnull
                                          String message)

check for null and throw NullPointerException if null

Type Parameters:

T - reference type

Parameters:

object - reference to check

message - message for the illegal argument exception

Returns:

the input reference if not null

Throws:

NullPointerException - if object is null

checkNotNegative

public static void checkNotNegative(@Nonnegative
                                    long object)

check for negative value and throw IllegalArgumentException if negative

Parameters:

object - value to check

Throws:

IllegalArgumentException - if object is negative

checkNotNegative

public static void checkNotNegative(@Nonnegative
                                    long object,
                                    @Nonnull
                                    String message)

check for negative value and throw IllegalArgumentException if negative

Parameters:

object - value to check

message - message for the illegal argument exception

Throws:

IllegalArgumentException - if object is negative

checkNotNull

@Nonnull
public static <T> T checkNotNull(com.google.common.base.Optional<T> object,
                                          @Nonnull
                                          String message)

check for absent and throw IllegalArgumentException if null or absent

Type Parameters:

T - reference type

Parameters:

object - reference to check

message - message for the illegal argument exception

Returns:

the input reference if not null

Throws:

IllegalArgumentException - if object is null