com.sun.star.uno

Class UnoRuntime

java.lang.Object

com.sun.star.uno.UnoRuntime

public class UnoRuntime
extends Object

The central class needed for implementing or using UNO components in Java.

The methods queryInterface and areSame delegate calls to the implementing objects and are used instead of casts, instanceof, ==, and equals.

For historic reasons, this class is not final, and has a public constructor. These artifacts are considered mistakes, which might be corrected in a future version of this class, so client code should not rely on them.

See Also:

IBridge, IEnvironment, IQueryInterface

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	DEBUG Deprecated. As of UDK 3.2.0, do not use this internal field.

Constructor Summary

Constructors

Constructor and Description
UnoRuntime() Deprecated. As of UDK 3.2.0, do not create instances of this class. It is considered a historic mistake to have a public constructor for this class, which only has static members. Also, this class might be changed to become final in a future version.

Method Summary

Modifier and Type	Method and Description
static boolean	areSame(Object any1, Object any2) Tests two UNO ANY values for equality.
static Object	completeValue(Type type, Object value) Complete a UNO value (make sure it is no invalid null value).
static String	generateOid(Object object) Generates a worldwide unique object identifier (OID) for the given Java object.
static IBridge	getBridge(IEnvironment from, IEnvironment to, Object[] args) Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.
static IBridge	getBridgeByName(String from, Object fromContext, String to, Object toContext, Object[] args) Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.
static IBridge[]	getBridges() Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.
static XCurrentContext	getCurrentContext() Gets the current context of the current thread, or null if no context has been set for the current thread.
static IEnvironment	getEnvironment(String name, Object context) Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.
static IMapping	getMapping(IEnvironment from, IEnvironment to) Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.
static IMapping	getMappingByName(String from, String to) Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.
static String	getUniqueKey() Generates a worldwide unique identifier string.
static <T> T	queryInterface(Class<T> zInterface, Object object) Queries the given UNO object for the given Java class (which must represent a UNO interface type).
static Object	queryInterface(Type type, Object object) Queries the given UNO object for the given UNO interface type.
static boolean	reset() Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.
static void	setCurrentContext(XCurrentContext context) Sets the current context for the current thread.

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

@Deprecated
public static final boolean DEBUG

Deprecated. As of UDK 3.2.0, do not use this internal field.

See Also:

Constant Field Values

Constructor Detail

UnoRuntime

@Deprecated
public UnoRuntime()

Deprecated. As of UDK 3.2.0, do not create instances of this class. It is considered a historic mistake to have a public constructor for this class, which only has static members. Also, this class might be changed to become final in a future version.

Method Detail

getUniqueKey

public static String getUniqueKey()

Generates a worldwide unique identifier string.

It is guaranteed that every invocation of this method generates a new ID, which is unique within the VM. The quality of “worldwide unique” will depend on the actual implementation, you should look at the source to determine if it meets your requirements.

Returns:

a unique String

generateOid

public static String generateOid(Object object)

Generates a worldwide unique object identifier (OID) for the given Java object.

It is guaranteed that subsequent calls to this method with the same Java object will give the same ID.

This method is generally of little use for client code. It should be considered a mistake that this method is published at all.

Parameters:

object - any object for which an OID shall be generated; must not be null

Returns:

the generated OID

See Also:

IQueryInterface.getOid()

queryInterface

public static Object queryInterface(Type type,
                                    Object object)

Queries the given UNO object for the given UNO interface type.

This method returns null in case the given UNO object does not support the given UNO interface type (or is itself null). Otherwise, a reference to a Java object implementing the Java interface type corresponding to the given UNO interface is returned. In the latter case, it is unspecified whether the returned Java object is the same as the given object, or is another facet of that UNO object.

Parameters:

type - the requested UNO interface type; must be a Type object representing a UNO interface type

object - a reference to any Java object representing (a facet of) a UNO object; may be null

Returns:

a reference to the requested UNO interface type if available, otherwise null

See Also:

IQueryInterface.queryInterface(com.sun.star.uno.Type)

queryInterface

public static <T> T queryInterface(Class<T> zInterface,
                                   Object object)

Queries the given UNO object for the given Java class (which must represent a UNO interface type).

Type Parameters:

T - the requested UNO interface type.

Parameters:

zInterface - a Java class representing a UNO interface type

object - a reference to any Java object representing (a facet of) a UNO object; may be null

Returns:

a reference to the requested UNO interface type if available, otherwise null

See Also:

queryInterface(Type, Object)

areSame

public static boolean areSame(Object any1,
                              Object any2)

Tests two UNO ANY values for equality.

Two UNO values are equal if and only if they are of the same UNO type t, and they meet the following condition, depending on t:

• If t is a primitive type, then both values must denote the same element of the set of values of t.
• If t is a structured type, then both values must recursively contain corresponding values that are equal.
• If t is an interface type, then the two values must be either both null references, or both references to the same UNO object.

Parameters:

any1 - a Java value representing a UNO ANY value.

any2 - a Java value representing a UNO ANY value.

Returns:

true if and only if the two arguments represent equal UNO values.

completeValue

public static final Object completeValue(Type type,
                                         Object value)

Complete a UNO value (make sure it is no invalid null value).

This is useful for members of parameterized type of instantiated polymorphic struct types, as null is a valid value there (and only there, for all types except ANY and interface types).

Parameters:

type - a non-void, non-exception UNO type.

value - a Java value representing a UNO value of the given UNO type, or null.

Returns:

the given value, or the neutral value of the given type, if the given value was an invalid null value.

Since:

UDK 3.2.3

getCurrentContext

public static XCurrentContext getCurrentContext()

Gets the current context of the current thread, or null if no context has been set for the current thread.

The current context is thread local, which means that this method returns the context that was last set for this thread.

Returns:

the current context of the current thread, or null if no context has been set for the current thread

setCurrentContext

public static void setCurrentContext(XCurrentContext context)

Sets the current context for the current thread.

The current context is thread local. To support a stacking behaviour, every function that sets the current context should reset it to the original value when exiting (for example, within a finally block).

Parameters:

context - the context to be set; if null, any previously set context will be removed

getEnvironment

@Deprecated
public static IEnvironment getEnvironment(String name,
                                                      Object context)
                                               throws Exception

Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.

Retrieves an environment of type name with context context.

Environments are held weakly by this class. If the requested environment already exists, this methods simply returns it. Otherwise, this method looks for it under com.sun.star.lib.uno.environments.name.name_environment.

Parameters:

name - the name of the environment

context - the context of the environment

Returns:

an environment.

Throws:

Exception - if something goes awry.

See Also:

IEnvironment

getBridge

@Deprecated
public static IBridge getBridge(IEnvironment from,
                                            IEnvironment to,
                                            Object[] args)
                                     throws Exception

Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.

Gets a bridge from environment from to environment to.

Creates a new bridge, if the requested bridge does not yet exist, and hands the arguments to the bridge.

If the requested bridge does not exist, it is searched for in package com.sun.star.lib.uno.bridges.from_to; and the root classpath as from_to_bridge.

Parameters:

from - the source environment

to - the target environment

args - the initial arguments for the bridge

Returns:

the requested bridge

Throws:

Exception - if something goes awry.

See Also:

getBridgeByName(java.lang.String, java.lang.Object, java.lang.String, java.lang.Object, java.lang.Object[]), IBridge, IEnvironment

getBridgeByName

@Deprecated
public static IBridge getBridgeByName(String from,
                                                  Object fromContext,
                                                  String to,
                                                  Object toContext,
                                                  Object[] args)
                                           throws Exception

Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.

Gets a bridge from environment from to environment to.

Creates a new bridge, if the requested bridge does not yet exist, and hands the arguments to the bridge.

If the requested bridge does not exist, it is searched for in package com.sun.star.lib.uno.bridges.from_to; and the root classpath as from_to_bridge. The used environments are retrieved through getEnvironment.

Parameters:

from - the name of the source environment

fromContext - the context for the source environment

to - the name of the target environment

toContext - the context for the target environment

args - the initial arguments for the bridge

Returns:

the requested bridge

Throws:

Exception - if something goes awry.

See Also:

getBridge(com.sun.star.uno.IEnvironment, com.sun.star.uno.IEnvironment, java.lang.Object[]), getEnvironment(java.lang.String, java.lang.Object), IBridge, IEnvironment

getBridges

@Deprecated
public static IBridge[] getBridges()

Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.

Returns an array of all active bridges.

Returns:

an array of IBridge objects

See Also:

IBridge

getMapping

@Deprecated
public static IMapping getMapping(IEnvironment from,
                                              IEnvironment to)
                                       throws Exception

Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.

Gets a mapping from environment from to environment to.

Mappings are like bridges, except that with mappings one can only map in one direction. Mappings are here for compatibility with the binary UNO API. Mappings are implemented as wrappers around bridges.

Parameters:

from - the source environment

to - the target environment

Returns:

the requested mapping

Throws:

Exception - if something goes awry.

See Also:

IEnvironment, IMapping

getMappingByName

@Deprecated
public static IMapping getMappingByName(String from,
                                                    String to)
                                             throws Exception

Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.

Gets a mapping from environment from to environment to.

The used environments are retrieved through getEnvironment.

Parameters:

from - the name of the source environment

to - the name of the target environment

Returns:

the requested mapping

Throws:

Exception - if something goes awry.

See Also:

getEnvironment(java.lang.String, java.lang.Object), getMapping(com.sun.star.uno.IEnvironment, com.sun.star.uno.IEnvironment), IMapping

reset

@Deprecated
public static boolean reset()

Deprecated. As of UDK 3.2.0, this method is deprecated, without offering a replacement.

Resets this UnoRuntime to its initial state.

Releases all references to bridges and environments.

Returns:

true if another thread didn't re-insert some bridge or environment before the method returns. Why that information would be useful is anybody's guess.