Class Util

java.lang.Object

org.apache.tomcat.websocket.Util

public class Util
extends Object

Utility class for internal use only within the org.apache.tomcat.websocket package.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Util.DecoderMatch	Holds the result of matching decoders against a target type.

Method Summary

Modifier and Type	Method	Description
static Object	coerceToType(Class<?> type, String value)	Coerces a string value to the specified type.
static List<DecoderEntry>	getDecoders(List<Class<? extends Decoder>> decoderClazzes, InstanceManager instanceManager)	Build the list of decoder entries from a set of decoder implementations.
static boolean	isPrimitive(Class<?> clazz)	Returns whether the given class is a primitive type or its wrapper class.
static void	parseExtensionHeader(List<Extension> extensions, String header)	Parses a Sec-WebSocket-Extensions header value and populates the given list with the parsed extensions.

Methods inherited from class Object

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

Method Details

isPrimitive

public static boolean isPrimitive(Class<?> clazz)

Returns whether the given class is a primitive type or its wrapper class.

Parameters:

clazz - The class to check

Returns:

true if the class is a primitive or wrapper type, false otherwise

coerceToType

public static Object coerceToType(Class<?> type,
 String value)

Coerces a string value to the specified type.

Parameters:

type - The target type

value - The string value to coerce

Returns:

The coerced value

Throws:

IllegalArgumentException - If the type is not supported

getDecoders

public static List<DecoderEntry> getDecoders(List<Class<? extends Decoder>> decoderClazzes,
 InstanceManager instanceManager)
                                      throws DeploymentException

Build the list of decoder entries from a set of decoder implementations.

Parameters:

decoderClazzes - Decoder implementation classes

instanceManager - Instance manager to use to create Decoder instances

Returns:

List of mappings from target type to associated decoder

Throws:

DeploymentException - If a provided decoder class is not valid

parseExtensionHeader

public static void parseExtensionHeader(List<Extension> extensions,
 String header)

Parses a Sec-WebSocket-Extensions header value and populates the given list with the parsed extensions.

Parameters:

extensions - The list to populate with parsed extensions

header - The header value to parse

Throws:

IllegalArgumentException - If the header contains invalid tokens or values