Package org.apache.cassandra.cql3.statements

Class RequestValidations

java.lang.Object

org.apache.cassandra.cql3.statements.RequestValidations

public final class RequestValidations
extends java.lang.Object

Utility methods use to perform request validation.

Method Summary

Modifier and Type	Method	Description
static void	checkBindValueSet(java.nio.ByteBuffer b, java.lang.String messageTemplate, java.lang.Object... messageArgs)	Checks that the specified bind marker value is set to a meaningful value.
static void	checkContainsNoDuplicates(java.util.List<?> list, java.lang.String message)	Checks that the specified list does not contains duplicates.
static <E> void	checkContainsOnly(java.util.List<E> list, java.util.List<E> expectedElements, java.lang.String message)	Checks that the specified list contains only the specified elements.
static void	checkFalse(boolean expression, java.lang.String message)	Checks that the specified expression is false.
static void	checkFalse(boolean expression, java.lang.String messageTemplate, java.lang.Object... messageArgs)	Checks that the specified expression is false.
static <T extends java.util.Collection<E>,E> T	checkNotEmpty(T collection, java.lang.String messageTemplate, java.lang.Object... messageArgs)	Checks that the specified collections is NOT empty.
static <T> T	checkNotNull(T object, java.lang.String messageTemplate, java.lang.Object... messageArgs)	Checks that the specified object is NOT null.
static <T> T	checkNull(T object, java.lang.String message)	Checks that the specified object is null.
static <T> T	checkNull(T object, java.lang.String messageTemplate, java.lang.Object... messageArgs)	Checks that the specified object is null.
static void	checkTrue(boolean expression, java.lang.String message)	Checks that the specified expression is true.
static void	checkTrue(boolean expression, java.lang.String messageTemplate, java.lang.Object... messageArgs)	Checks that the specified expression is true.
static InvalidRequestException	invalidRequest(java.lang.String messageTemplate, java.lang.Object... messageArgs)	Returns an InvalidRequestException with the specified message.

Methods inherited from class java.lang.Object

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

Method Detail

checkTrue

public static void checkTrue(boolean expression,
                             java.lang.String message)
                      throws InvalidRequestException

Checks that the specified expression is true. If not an InvalidRequestException will be thrown.

Parameters:

expression - the expression to test

message - the error message

Throws:

InvalidRequestException - if the specified expression is false.

checkTrue

public static void checkTrue(boolean expression,
                             java.lang.String messageTemplate,
                             java.lang.Object... messageArgs)
                      throws InvalidRequestException

Checks that the specified expression is true. If not an InvalidRequestException will be thrown.

Parameters:

expression - the expression to test

messageTemplate - the template used to build the error message

messageArgs - the message arguments

Throws:

InvalidRequestException - if the specified expression is false.

checkContainsNoDuplicates

public static void checkContainsNoDuplicates(java.util.List<?> list,
                                             java.lang.String message)
                                      throws InvalidRequestException

Checks that the specified list does not contains duplicates.

Parameters:

list - the list to test

message - the error message

Throws:

InvalidRequestException - if the specified list contains duplicates.

checkContainsOnly

public static <E> void checkContainsOnly(java.util.List<E> list,
                                         java.util.List<E> expectedElements,
                                         java.lang.String message)
                                  throws InvalidRequestException

Checks that the specified list contains only the specified elements.

Parameters:

list - the list to test

expectedElements - the expected elements

message - the error message

Throws:

InvalidRequestException - if the specified list contains duplicates.

checkFalse

public static void checkFalse(boolean expression,
                              java.lang.String messageTemplate,
                              java.lang.Object... messageArgs)
                       throws InvalidRequestException

Checks that the specified expression is false. If not an InvalidRequestException will be thrown.

Parameters:

expression - the expression to test

messageTemplate - the template used to build the error message

messageArgs - the message arguments

Throws:

InvalidRequestException - if the specified expression is true.

checkFalse

public static void checkFalse(boolean expression,
                              java.lang.String message)
                       throws InvalidRequestException

Checks that the specified expression is false. If not an InvalidRequestException will be thrown.

Parameters:

expression - the expression to test

message - the error message

Throws:

InvalidRequestException - if the specified expression is true.

checkNotNull

public static <T> T checkNotNull(T object,
                                 java.lang.String messageTemplate,
                                 java.lang.Object... messageArgs)
                          throws InvalidRequestException

Checks that the specified object is NOT null. If it is an InvalidRequestException will be throws.

Parameters:

object - the object to test

messageTemplate - the template used to build the error message

messageArgs - the message arguments

Returns:

the object

Throws:

InvalidRequestException - if the specified object is null.

checkNotEmpty

public static <T extends java.util.Collection<E>,E> T checkNotEmpty(T collection,
                                                                          java.lang.String messageTemplate,
                                                                          java.lang.Object... messageArgs)
                                                                   throws InvalidRequestException

Checks that the specified collections is NOT empty. If it is an InvalidRequestException will be throws.

Parameters:

collection - the collection to test

messageTemplate - the template used to build the error message

messageArgs - the message arguments

Returns:

the collection

Throws:

InvalidRequestException - if the specified collection is empty.

checkBindValueSet

public static void checkBindValueSet(java.nio.ByteBuffer b,
                                     java.lang.String messageTemplate,
                                     java.lang.Object... messageArgs)
                              throws InvalidRequestException

Checks that the specified bind marker value is set to a meaningful value. If it is not a InvalidRequestException will be thrown.

Parameters:

b - the ByteBuffer to test

messageTemplate - the template used to build the error message

messageArgs - the message arguments

Throws:

InvalidRequestException - if the specified bind marker value is not set to a meaningful value.

checkNull

public static <T> T checkNull(T object,
                              java.lang.String messageTemplate,
                              java.lang.Object... messageArgs)
                       throws InvalidRequestException

Checks that the specified object is null. If it is not an InvalidRequestException will be throws.

Parameters:

object - the object to test

messageTemplate - the template used to build the error message

messageArgs - the message arguments

Returns:

the object

Throws:

InvalidRequestException - if the specified object is not null.

checkNull

public static <T> T checkNull(T object,
                              java.lang.String message)
                       throws InvalidRequestException

Checks that the specified object is null. If it is not an InvalidRequestException will be throws.

Parameters:

object - the object to test

message - the error message

Returns:

the object

Throws:

InvalidRequestException - if the specified object is not null.

invalidRequest

public static InvalidRequestException invalidRequest(java.lang.String messageTemplate,
                                                     java.lang.Object... messageArgs)

Returns an InvalidRequestException with the specified message.

Parameters:

messageTemplate - the template used to build the error message

messageArgs - the message arguments

Returns:

an InvalidRequestException with the specified message.