xref: /trunk/main/udkapi/com/sun/star/java/XJavaVM.idl (revision cdf0e10c)
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27#ifndef __com_sun_star_java_XJavaVM_idl__
28#define __com_sun_star_java_XJavaVM_idl__
29
30#ifndef __com_sun_star_uno_XInterface_idl__
31#include <com/sun/star/uno/XInterface.idl>
32#endif
33
34//=============================================================================
35
36module com {  module sun {  module star {  module java {
37
38//=============================================================================
39
40// DocMerge from xml: interface com::sun::star::java::XJavaVM
41/** must be implemented by the user of the XJavaVM.
42
43    @deprecated
44    A UNO interface seems to be at the wrong abstraction level for this
45    functionality (also, the C++ classes <code>jvmaccess::VirtualMachine</code>
46    and <code>jvmaccess::UnoVirtualMachine</code> used by
47    <member scope="com::sun::star::java">XJavaVM::getJavaVM</member> are not
48    part of the public C++ UNO runtime API).  This should probably be replaced
49    by an appropriate C/C++ API.
50 */
51published interface XJavaVM: com::sun::star::uno::XInterface
52{
53	//-------------------------------------------------------------------------
54
55	// DocMerge from xml: method com::sun::star::java::XJavaVM::getJavaVM
56	/** returns the address of the Java Virtual Machine.
57
58		<p>If the VM is not already instantiated, it will be now.</p>
59
60        <p>If the <code>processID</code> is a normal 16-byte ID, the returned
61        <atom>any</atom> contains a JNI <code>JavaVM</code> pointer as a
62        <atom>long</atom> or <atom>hyper</atom> integer (depending on the
63        platform).  If the <code>processID</code> does not match the current
64        process, or if the VM cannot be instantiated for whatever reason, a
65        <void/> <atom>any</atom> is returned.</p>
66
67        <p>If the <code>processID</code> has an additional 17th byte of
68        value&nbsp;<code>0</code>, the returned <atom>any</atom> contains a
69        non&ndash;reference-counted pointer to a (reference-counted) instance of
70        the C++ <code>jvmaccess::VirtualMachine</code> class, always represented
71        as a <atom>hyper</atom> integer.  The pointer is guaranteed to be valid
72        as long as the reference to this
73        <type scope="com::sun::star::java">XJavaVM</type> is valid (but the
74        pointer should be converted into a reference-counted reference as soon
75        as possible).  Again, if the first 16 bytes of the
76        <code>processID</code> do not match the current process, or if the VM
77        cannot be instantiated for whatever reason, a <void/> <atom>any</atom>
78        is returned.</p>
79
80        <p>If the <code>processID</code> has an additional 17th byte of
81        value&nbsp;<code>1</code>, the returned <atom>any</atom> contains a
82        non&ndash;reference-counted pointer to a (reference-counted) instance of
83        the C++ <code>jvmaccess::UnoVirtualMachine</code> class, always
84        represented as a <atom>hyper</atom> integer.  The pointer is guaranteed
85        to be valid as long as the reference to this
86        <type scope="com::sun::star::java">XJavaVM</type> is valid.  Again, if
87        the first 16 bytes of the <code>processID</code> do not match the
88        current process, or if the VM cannot be instantiated for whatever
89        reason, a <void/> <atom>any</atom> is returned.</p>
90
91        <p>The first form (returning a JNI <code>JavaVM</code> pointer) is
92        mainly for backwards compatibility, new code should use the second form
93        (returning a pointer to a <code>jvmaccess::VirtualMachine</code>) if it
94        does not want to use the Java UNO environment, and it should use the
95        third form (returning a pointer to a
96        <code>jvmaccess::UnoVirtualMachine</code>) if it wants to use the Java
97        UNO environment.  For example, one advantage of using
98        <code>jvmaccess::VirtualMachine</code> instead of the raw
99        <code>JavaVM</code> pointer is that whenever you attach a native thread
100        to the Java virtual machine, that thread's context
101        <code>ClassLoader</code> (see
102        <code>java.lang.Thread.getContextClassLoader</code>) will automatically
103        be set to a meaningful value.</p>
104
105        @param processID
106        The process ID of the caller's process, possibly extended by a 17th byte
107        of value <code>0</code> or&nbsp;<code>1</code>.
108
109        @return
110        On success, the <atom>any</atom> contains a pointer represented as
111        <atom>long</atom> or <atom>hyper</atom>, otherwise the <atom>any</atom>
112        is <void/>.
113	 */
114	any getJavaVM( [in] sequence<byte> processID );
115
116	//-------------------------------------------------------------------------
117
118	// DocMerge from xml: method com::sun::star::java::XJavaVM::isVMStarted
119	/** returns <true/> if the VM is started successfully, otherwise <false/>.
120	 */
121	boolean isVMStarted();
122
123	//-------------------------------------------------------------------------
124
125	// DocMerge from xml: method com::sun::star::java::XJavaVM::isVMEnabled
126	/** Returns <true/> if the VM is enabled.
127
128		<p>It is only possible to get the VM, if this method return 0. </p>
129	 */
130	boolean isVMEnabled();
131
132};
133
134//=============================================================================
135
136}; }; }; };
137
138/*=============================================================================
139
140=============================================================================*/
141#endif
142