net.openhft.compiler

Enum CompilerUtils

java.lang.Object

java.lang.Enum<CompilerUtils>

net.openhft.compiler.CompilerUtils

All Implemented Interfaces:

Serializable, Comparable<CompilerUtils>

public enum CompilerUtils
extends Enum<CompilerUtils>

This class support loading and debugging Java Classes dynamically.

Field Summary

Fields

Modifier and Type	Field and Description
static CachedCompiler	CACHED_COMPILER
static boolean	DEBUGGING

Method Summary

Modifier and Type	Method and Description
static boolean	addClassPath(@NotNull String dir) Add a directory to the class path for compiling.
static Class	defineClass(@Nullable ClassLoader classLoader, @NotNull String className, @NotNull byte[] bytes) Define a class for byte code.
static void	defineClass(@NotNull String className, @NotNull byte[] bytes) Define a class for byte code.
static Class	loadFromResource(@NotNull String className, @NotNull String resourceName) Load a java class file from the classpath or local file system.
static CompilerUtils	valueOf(String name) Returns the enum constant of this type with the specified name.
static CompilerUtils[]	values() Returns an array containing the constants of this enum type, in the order they are declared.
static boolean	writeBytes(@NotNull File file, @NotNull byte[] bytes)
static boolean	writeText(@NotNull File file, @NotNull String text)

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

DEBUGGING

public static final boolean DEBUGGING

CACHED_COMPILER

public static final CachedCompiler CACHED_COMPILER

Method Detail

values

public static CompilerUtils[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (CompilerUtils c : CompilerUtils.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static CompilerUtils valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

loadFromResource

public static Class loadFromResource(@NotNull
                                     @NotNull String className,
                                     @NotNull
                                     @NotNull String resourceName)
                              throws IOException,
                                     ClassNotFoundException

Load a java class file from the classpath or local file system.

Parameters:

className - expected class name of the outer class.

resourceName - as the full file name with extension.

Returns:

the outer class loaded.

Throws:

IOException - the resource could not be loaded.

ClassNotFoundException - the class name didn't match or failed to initialise.

addClassPath

public static boolean addClassPath(@NotNull
                                   @NotNull String dir)

Add a directory to the class path for compiling. This can be required with custom

Parameters:

dir - to add.

Returns:

whether the directory was found, if not it is not added either.

defineClass

public static void defineClass(@NotNull
                               @NotNull String className,
                               @NotNull
                               @NotNull byte[] bytes)

Define a class for byte code.

Parameters:

className - expected to load.

bytes - of the byte code.

defineClass

public static Class defineClass(@Nullable
                                @Nullable ClassLoader classLoader,
                                @NotNull
                                @NotNull String className,
                                @NotNull
                                @NotNull byte[] bytes)

Define a class for byte code.

Parameters:

classLoader - to load the class into.

className - expected to load.

bytes - of the byte code.

writeText

public static boolean writeText(@NotNull
                                @NotNull File file,
                                @NotNull
                                @NotNull String text)

writeBytes

public static boolean writeBytes(@NotNull
                                 @NotNull File file,
                                 @NotNull
                                 @NotNull byte[] bytes)