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java.lang.Object | +--org.apache.bsf.engines.rexx.RexxAndJava
This class manages the calls from Rexx or Object Rexx into Java.
Added ability to invoke Java methods without giving type of arguments! (On the way from the 2003 International Rexx symposium back home to Vienna.)
RexxAndJava.java - this class relays Java and (Object) Rexx Copyright (C) 2001-2003 Rony G. Flatscher This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA The following URL may be available for further information: http://www.gnu.org/copyleft/lesser.html
Nested Class Summary | |
(package private) class |
RexxAndJava.ExitDelayed
Class to exit the JVM, will be executed concurrently, sleeps and then calls System.exit(exit_number) . |
protected class |
RexxAndJava.SyncPutGet
Inner class to implement a Synchronized ReaderWriter, where a read on an empty Vector blocks the read, until a write occurs (with optional timeout). |
Field Summary | |
private static int |
ADD_EVENT_LISTENER
|
private static int |
ARRAY_AT
|
private static int |
ARRAY_LENGTH
|
private static int |
ARRAY_PUT
|
private static int |
ARRAY_PUT_STRICT
|
(package private) static boolean |
bMethodHasSetAccessible
true if setting accessibility rights is available, false else. |
private static int |
CREATE_ARRAY_OBJECT
|
protected static java.lang.String |
DLL_NAME
Defines the name of DLL to be used to resolve the native functions. |
protected static java.lang.String |
EVENT_TEXT
Defines the string to indicate an 'eventText' is passed in: "<eventText>". |
protected RexxAndJava.SyncPutGet |
eventTextList
Allows Synchronized access to the vector storing the text sent by the eventListeners. |
private static int |
EXIT
|
private static int |
GET_FIELD_VALUE
|
private static int |
GET_PROPERTY_VALUE
|
private static int |
GET_STATIC_VALUE
|
private static int |
GET_VERSION
|
(package private) org.apache.bsf.util.type.TypeConvertorRegistry |
glob_tcr
To store the default TypeConvertorRegistry, if needed. |
private static int |
INVOKE
|
private static int |
INVOKE_STRICT
|
private static int |
LOOKUP_BEAN
|
(package private) java.util.Hashtable |
methodReferences
Allows storing successfully reflected methods. |
(package private) org.apache.bsf.BSFManager |
mgr
Stores the BSF manager. |
protected static java.lang.String |
null4Rexx
Defines the string which represents null , by default
".NIL" . |
(package private) java.util.Hashtable |
orxReferences
Stores the number of references from Object Rexx to Java objects using beanName as the key. |
private static int |
POLL_EVENT_TEXT
|
private static int |
POST_EVENT_TEXT
|
private static int |
REGISTER_BEAN
|
private static int |
REGISTER_BEAN_STRICT
|
(package private) org.apache.bsf.BSFEngine |
RexxEngine
Stores the Rexx engine. |
private static int |
SET_FIELD_VALUE
|
private static int |
SET_FIELD_VALUE_STRICT
|
private static int |
SET_PROPERTY_VALUE
|
private static int |
SET_PROPERTY_VALUE_STRICT
|
private static int |
SET_REXX_NULL_STRING
|
private static int |
SLEEP
|
private static java.lang.String |
STRING_ADD_EVENT_LISTENER
|
private static java.lang.String |
STRING_ARRAY_AT
|
private static java.lang.String |
STRING_ARRAY_LENGTH
|
private static java.lang.String |
STRING_ARRAY_PUT
|
private static java.lang.String |
STRING_ARRAY_PUT_STRICT
|
private static java.lang.String |
STRING_CREATE_ARRAY_OBJECT
|
private static java.lang.String |
STRING_EXIT
|
private static java.lang.String |
STRING_GET_FIELD_VALUE
|
private static java.lang.String |
STRING_GET_PROPERTY_VALUE
|
private static java.lang.String |
STRING_GET_STATIC_VALUE
|
private static java.lang.String |
STRING_GET_VERSION
|
private static java.lang.String |
STRING_INVOKE
|
private static java.lang.String |
STRING_INVOKE_STRICT
|
private static java.lang.String |
STRING_LOOKUP_BEAN
|
private static java.lang.String |
STRING_POLL_EVENT_TEXT
|
private static java.lang.String |
STRING_POST_EVENT_TEXT
|
private static java.lang.String |
STRING_REGISTER_BEAN
|
private static java.lang.String |
STRING_REGISTER_BEAN_STRICT
|
private static java.lang.String |
STRING_SET_FIELD_VALUE
|
private static java.lang.String |
STRING_SET_FIELD_VALUE_STRICT
|
private static java.lang.String |
STRING_SET_PROPERTY_VALUE
|
private static java.lang.String |
STRING_SET_PROPERTY_VALUE_STRICT
|
private static java.lang.String |
STRING_SET_REXX_NULL_STRING
|
private static java.lang.String |
STRING_SLEEP
|
private static java.lang.String |
STRING_UNREGISTER_BEAN
|
private static java.lang.String |
STRING_WRAP_ARRAY_OBJECT
|
private static java.lang.String |
STRING_WRAP_ENUMERATION_OBJECT
|
private static int |
UNREGISTER_BEAN
|
private static int |
WRAP_ARRAY_OBJECT
|
private static int |
WRAP_ENUMERATION_OBJECT
|
Constructor Summary | |
(package private) |
RexxAndJava(org.apache.bsf.BSFManager mgr,
org.apache.bsf.BSFEngine rengine)
Constructor to receive and store the BSF manager and the Rexx engine. |
Method Summary | |
(package private) java.lang.Object[] |
coerceArgs(java.lang.Object[] funcArgs,
java.lang.Class[] paramTypes)
Coerces the arguments from Rexx to the appropriate Java types. |
private java.lang.Object |
convFromRexx(java.lang.String value)
Replaces a reference to a Java object with the Java object. |
private java.lang.Object |
convFromRexx(java.lang.String type,
java.lang.String value)
Converts the string from Rexx to the indicated type. |
java.lang.String |
javaCallBSF(java.lang.String[] args)
Entry point for Rexx calls into Java. |
int |
jniInitialize4Rexx()
rgf, 2003-01-15, used for allowing the BSF4Rexx-DLL to get at *env, *obj and then to mid etc. |
int |
jniRegisterBSF()
This native method makes sure that the function 'BSF' is registered with Rexx, making it thereby available to all Rexx and Object Rexx programs, called from Java. |
int |
jniRexxDidRexxTerminate()
This native method indicates whether the Object Rexx is still running or not. (2002-12-13, ---rgf) |
java.lang.String |
jniRexxStart(java.lang.String script,
java.lang.String[] args)
This native method Calls the Rexx interpreter, having it execute the passed in script with the given array of arguments. |
int |
jniRexxWaitForTermination()
This native method waits for the Object Rexx interpreter to terminate and waits until all of the cleanup (e.g. of Object Rexx) is done. (2002-12-07, ---rgf) |
protected java.lang.String |
makeString4Rexx(java.lang.Object o)
This method determines what String content to return. |
protected boolean |
unregisterBean(java.lang.String beanName)
This method allows for unregistering Beans, taking into account reference counters. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
protected static final java.lang.String DLL_NAME
protected static final java.lang.String EVENT_TEXT
protected static java.lang.String null4Rexx
null
, by default
".NIL"
. Arguments given by Rexx can in addition
be indicated to be null
by merely omitting them on the Rexx side.
protected RexxAndJava.SyncPutGet eventTextList
static boolean bMethodHasSetAccessible
true
if setting accessibility rights is available, false
else.
org.apache.bsf.BSFManager mgr
org.apache.bsf.BSFEngine RexxEngine
java.util.Hashtable orxReferences
beanName
as the key. This way it becomes possible for the
Object Rexx implementation using "BSF.cls"
to
transparently create Object Rexx proxy objects, if objects are returned
from Java method invocations and to transparently unregister them, when
the Object Rexx proxy objects are garbage collected.
java.util.Hashtable methodReferences
org.apache.bsf.util.type.TypeConvertorRegistry glob_tcr
private static final int ADD_EVENT_LISTENER
private static final int ARRAY_AT
private static final int ARRAY_LENGTH
private static final int ARRAY_PUT
private static final int ARRAY_PUT_STRICT
private static final int CREATE_ARRAY_OBJECT
private static final int EXIT
private static final int GET_FIELD_VALUE
private static final int GET_PROPERTY_VALUE
private static final int GET_STATIC_VALUE
private static final int GET_VERSION
private static final int INVOKE
private static final int INVOKE_STRICT
private static final int LOOKUP_BEAN
private static final int POLL_EVENT_TEXT
private static final int POST_EVENT_TEXT
private static final int REGISTER_BEAN
private static final int REGISTER_BEAN_STRICT
private static final int SET_FIELD_VALUE
private static final int SET_FIELD_VALUE_STRICT
private static final int SET_PROPERTY_VALUE
private static final int SET_PROPERTY_VALUE_STRICT
private static final int SET_REXX_NULL_STRING
private static final int SLEEP
private static final int UNREGISTER_BEAN
private static final int WRAP_ARRAY_OBJECT
private static final int WRAP_ENUMERATION_OBJECT
private static final java.lang.String STRING_ADD_EVENT_LISTENER
private static final java.lang.String STRING_ARRAY_AT
private static final java.lang.String STRING_ARRAY_LENGTH
private static final java.lang.String STRING_ARRAY_PUT
private static final java.lang.String STRING_ARRAY_PUT_STRICT
private static final java.lang.String STRING_CREATE_ARRAY_OBJECT
private static final java.lang.String STRING_EXIT
private static final java.lang.String STRING_GET_FIELD_VALUE
private static final java.lang.String STRING_GET_PROPERTY_VALUE
private static final java.lang.String STRING_GET_STATIC_VALUE
private static final java.lang.String STRING_GET_VERSION
private static final java.lang.String STRING_INVOKE
private static final java.lang.String STRING_INVOKE_STRICT
private static final java.lang.String STRING_LOOKUP_BEAN
private static final java.lang.String STRING_POLL_EVENT_TEXT
private static final java.lang.String STRING_POST_EVENT_TEXT
private static final java.lang.String STRING_REGISTER_BEAN
private static final java.lang.String STRING_REGISTER_BEAN_STRICT
private static final java.lang.String STRING_SET_FIELD_VALUE
private static final java.lang.String STRING_SET_FIELD_VALUE_STRICT
private static final java.lang.String STRING_SET_PROPERTY_VALUE
private static final java.lang.String STRING_SET_PROPERTY_VALUE_STRICT
private static final java.lang.String STRING_SET_REXX_NULL_STRING
private static final java.lang.String STRING_SLEEP
private static final java.lang.String STRING_UNREGISTER_BEAN
private static final java.lang.String STRING_WRAP_ARRAY_OBJECT
private static final java.lang.String STRING_WRAP_ENUMERATION_OBJECT
Constructor Detail |
RexxAndJava(org.apache.bsf.BSFManager mgr, org.apache.bsf.BSFEngine rengine)
Preregisters the most important class objects. Referring to them is possible by using the following strings from Rexx (case *is* significant!):
Method Detail |
public int jniRegisterBSF()
public java.lang.String jniRexxStart(java.lang.String script, java.lang.String[] args)
script
- a String consisting of Rexx statements separated by
by line-end characters (';' or CR-LF).args
- an array of Strings representing the arguments
or null
, if no arguments are available.
null
, if
no result is returned or the Rexx interpreter stopped
execution due to a runtime error.public int jniRexxWaitForTermination()
public int jniRexxDidRexxTerminate()
public int jniInitialize4Rexx()
public java.lang.String javaCallBSF(java.lang.String[] args) throws org.apache.bsf.BSFException
TypeIndicator | Following Argument is of Type: |
"BOolean"
| "boolean" i.e. the value 0 (false) or 1 (true)
|
"BYte"
| "byte" a byte value
|
"Char"
| "char" i.e. a single (UTF8) character
|
"Double"
| "double" a double value
|
"Float"
| "float" a float value
|
"Int"
| "int" an integer value
|
"Long"
| "long" a long value
|
"Object"
| "Object" an Object which must be registered already |
"SHort"
| "short" a short value
|
"STring"
| "String" a string value (UTF8)
|
Hence, for the "...Strict"-subfunctions the Rexx supplied arguments must be given in pairs by Rexx: first the type argument (from the above table) and then the argument itself.
The call syntax from Rexx looks like, e.g.:
call BSF "SubFunctionName", "argument1", "argument2", "", ... or: a=BSF("SubFunctionName", "argument1", "argument2", ...)
The following BSF methods are made available to Rexx and can therefore be indicated as the first argument (the 'subfunction') to the 'BSF' call from Rexx:
SubFunctionName | Argument | Description |
"addEventListener"
| Adds an event listener to a bean and defines the eventText
to be generated. These generated texts can be retrieved with the
function pollEventText .
| |
beanName
| Mandatory, name of a registered bean which should get monitored. | |
eventSetName
| Mandatory, name of the set the event belongs to. This name is used to create an event adapter at runtime. | |
filter
| Mandatory, name of the actual event which should cause a notification. | |
eventText
| Mandatory, text which should be sent by this event listener, each time the event occurs. | |
"arrayAt"
| Allows accessing a Java array element.
Returns the Java object at the indicated array element, or null , if no object is stored there.
| |
arrayObject
| Mandatory, name of a registered arrayObject (received by Java). | |
idx1
| Mandatory, integer indicating the position in dimension 1.
Alternatively, a sole Java int-array containing the 0-based index-values. | |
idx2
| Integer indicating the position in dimension 2 ... | |
"arrayLength"
| Returns the value of the 'length' field of the arrayObject .
| |
arrayObject
| Mandatory, name of a registered arrayObject (received by Java). | |
"arrayPut"
| Allows to put a new value into a Java array element at the indicated position. | |
arrayObject
| Mandatory, name of a registered arrayObject (received by Java). | |
typeIndicator
| Type indicator for newValue
| |
newValue
| The new value to be set at the indicated position in the array. | |
idx1
| Mandatory, integer indicating the position in dimension 1.
Alternatively, a sole Java int-array containing the 0-based index-values. | |
idx2
| Integer indicating the position in dimension 2 ... | |
"createArray"
| Creates a Java array of the given componentType and number of
dimensions.
Returns the created Java array object. | |
componentType
| Mandatory, name of a registered Java class object. For convenience, you may use any
of the pre-registered beans named (note case of first letter!): " Class.class ",
"Object.class ",
"Method.class ",
"Array.class ",
"String.class ",
"System.class ",
"Boolean.class ",
"boolean.class " (primitive data type),
"Byte.class ",
"byte.class " (primitive data type),
"Character.class ",
"char.class " (primitive data type),
"Double.class ",
"double.class " (primitive data type),
"Integer.class ",
"int.class " (primitive data type),
"Long.class ",
"long.class " (primitive data type),
"Float.class ",
"float.class " (primitive data type),
"Short.class ",
"short.class " (primitive data type).
| |
capacity 1
| Mandatory, integer indicating the number of elements in dimension 1.
Alternatively, a sole Java int-array containing the capacity per dimension. The first dimension is stored with index 0, the second with index 1, ... | |
capacity 2
| Integer indicating the number of elements in dimension 2. | |
... capacity n
| Integer indicating the number of elements in dimension n. | |
"wrapArray"
| Wraps the given array up in a ArrayWrapper -object, allowing
easy access to information about the array like dimensions, size and
also getting and setting values in an easy manner.
| |
arrayObject
| Mandatory, name of a registered arrayObject (received by Java). | |
"exit"
| Terminates the Java Virtual Machine. Allows Rexx
to shut down the JVM (and thereby Rexx as well).
In order for Rexx being able to shutdown properly
itself, the termination of the JVM is delayed by
time2wait .
Returns the string "SHUTDOWN, REXX !" .
| |
retVal
| Optional integer return value. If omitted, then "0"
will be used as argument for the System.exit(n) call.
| |
time2wait
| Optional number of milliseconds (msecs) to wait until the JVM will
be terminated. This allows Rexx to shutdown (clean up) its side as
well. Default value, if omitted: 100 , i.e. 100 msecs,
i.e. 1/10th second.
| |
"getFieldValue"
| Looks up a public field of the registered
object.
Returns the value of the field. | |
beanName
| Mandatory, name of the object to be looked up. | |
fieldName
| Mandatory, name of the public field of the object. | |
"getPropertyValue" (untested!)
| Looks up a property of the registered
Java Bean object.
Returns the value of the property. | |
beanName
| Mandatory, name of the Java Bean object to be looked up. | |
propertyName
| Mandatory, name of the Java Bean property. | |
index
| Mandatory, null , if Java Bean property is not indexed,
a valid integer number else.
| |
"getStaticValue"
| Looks up a public static field of the
given class or interface. This function does not instantiate
the class (would not be possible for abstract classes
or interfaces).
Returns the value of the public static field. | |
className
| Mandatory, name of the class, abstract class or interface to be looked up. | |
fieldName
| Mandatory, name of the public static field of the object. | |
"invoke"
| Invokes (calls) the method with the given arguments
on the bean.
Returns the result of the method invocation or null .
| |
beanName
| Mandatory, name of a registered bean on which the method (function) should get invoked. | |
methodName
| Mandatory, name of the method which should get invoked. | |
arg # 1
| Argument # 1 (if given). | |
... arg # n
| Argument # n (if given). | |
"invokeStrict"
| Invokes (calls) the method with the given arguments
on the bean.
Each Rexx argument must be preceeded by its Java type.
Returns the result of the method invocation or null .
| |
beanName
| Mandatory, name of a registered bean on which the method (function) should get invoked. | |
methodName
| Mandatory, name of the method which should get invoked. | |
typeIndicator # 1
| Type indicator for argument # 1 (if given). | |
arg # 1
| The argument # 1 itself (if given). | |
Any additional arguments must be given in pairs of "typeIndicator" and "arg" as well. | ||
"lookupBean"
| Looks up an object in the BSF
manager object registry. (Allows for retrieving pre-declared
beans as well.)
Returns the object or null , if not found.
| |
beanName
| Mandatory, name of the object to be looked up. Returns
the object rendered to a string or null , if not found.
| |
"pollEventText"
| Polls for the eventText defined in the above subfunction
"addEventListener " placed
into a queue by the appropriate event listeners,
or posted via "postEventText " below.
If no timeout value is supplied, "0" will be used by default, which blocks the return of this function (forever) until some text is available for return. Returns available eventText , or if a
timeout occurred while waiting null .
| |
timeOut
| Optional, timeout in milliseconds, i.e. time to wait for
an eventText to appear, before returning.
| |
"postEventText"
| Adds eventText to the eventText vector (list),
can be retrieved via pollEventText .
Returns the received eventText
| |
eventText
| Mandatory, text which should be put into the eventText vector.
| |
priority
| Optional, priority level of eventText , can be one of:
| |
"registerBean"
| Creates a new object (instantiating the given Java class
with the given arguments) and registers it using the
given beanName.
Returns beanName (always use this returned beanName for looking up the object in the registry). | |
beanName
| Name of the object to be created and registered.
if no name is given (empty string or null )
then a unique one will be created and returned;
the code to create the unique name is the same
as the documented "Object.hashCode()":
o.getClass().getName() + "@"
+ Integer.toHexString(o.hashCode()) .
| |
beanType
| Mandatory, type (Java class name) of the bean (Java object) to be created and registered. | |
arg # 1
| The argument # 1 (if given). | |
... arg # n
| The argument # n (if given). | |
"registerBeanStrict"
| Creates a new object (instantiating the given Java class
with the given arguments) and registers it using the
given beanName.
Returns beanName (always use this returned beanName for looking up the object in the registry). | |
beanName
| Name of the object to be created and registered.
if no name is given (empty string or null )
then a unique one will be created and returned;
the code to create the unique name is the same
as the documented "Object.hashCode()":
o.getClass().getName() + "@"
+ Integer.toHexString(o.hashCode()) .
| |
beanType
| Mandatory, type (Java class name) of the bean (Java object) to be created and registered. | |
typeIndicator # 1
| Type indicator for argument # 1 (if given). | |
arg # 1
| The argument # 1 (if given). | |
Any additional arguments must be given in pairs of "typeIndicator" and "arg" as well. | ||
"setFieldValue"
| Looks up a public field of the registered
object and sets it to the argument's value.
Returns the new value of the field. | |
beanName
| Mandatory, name of the object to be looked up. | |
fieldName
| Mandatory, name of the public field of the object. | |
newValue
| The new value the field gets set to. | |
"setFieldValueStrict"
| Looks up a public field of the registered
object and sets it to the argument's value.
Returns the new value of the field. | |
beanName
| Mandatory, name of the object to be looked up. | |
fieldName
| Mandatory, name of the public field of the object. | |
typeIndicator
| Type indicator for the immediately following argument
(newValue ).
| |
newValue
| The new value the field gets set to. | |
"setPropertyValue" (untested!)
| Looks up a property of the registered
Java Bean object and sets it to the argument's value.
Returns the new value of the property. | |
beanName
| Mandatory, name of the Java Bean object to be looked up. | |
propertyName
| Mandatory, name of the Java Bean property. | |
index
| Mandatory, null , if Java Bean property is not indexed,
a valid integer number else.
| |
newValue
| The new value the property gets set to. | |
"setPropertyValueStrict" (untested!)
| Looks up a property of the registered
Java Bean object and sets it to the argument's value.
Returns the new value of the property. | |
beanName
| Mandatory, name of the Java Bean object to be looked up. | |
propertyName
| Mandatory, name of the Java Bean property. | |
index
| Mandatory, null , if Java Bean property is not indexed,
a valid integer number else.
| |
typeIndicator
| Type indicator for the immediately following argument
(newValue ).
| |
newValue
| The new value the property gets set to. | |
"setRexxNullString"
| Sets the field null4Rexx to the string which serves
as the representation for null .
| |
newString
| Mandatory, the new string to be used to indicate a Java
null .
| |
"sleep"
| Sleeps time2sleep seconds before returning.
| |
time2sleep
| Mandatory, indicates seconds to sleep before returning. time2sleep .
The sleeping occurs with an attempted resolution of milliseconds,
being calculated like:
(long) ((double)time2sleep*1000+0.5d) , e.g.
Hint: If available, use Rexx' | |
"unregisterBean"
| Unregisters an object from the BSF manager's
object registry.
Returns the former beanName of the just unregistered object. | |
beanName
| Mandatory, name of bean (Java object) to be unregistered. | |
"version"
| Returns the version of this program in the form of
"version.YYYYMMMDDD package-name-of-engine ", e.g.
"200.20030416 com.ibm.bsf.engines.rexx " for IBM's BSF or
"200.20030416 org.apache.bsf.engines.rexx " for Apache's BSF.
| |
| There exists no argument for this subfunction. | |
"wrapEnumeration"
| Wraps the given object up in a EnumerationWrapper -object, allowing
Java 1.1 programs to use the methods of the Enumeration interface
(the problem: Java 1.1 raises an IllegalAccessException, if accessing
methods of inner classes; starting with 1.2 one can come by this restriction
under program control).
| |
enumerationObject
| Mandatory, name of a registered enumerationObject (received by Java). |
null
.
org.apache.bsf.BSFException
private java.lang.Object convFromRexx(java.lang.String type, java.lang.String value) throws org.apache.bsf.BSFException
null
is returned for it.
type
- one of
"BOolean" (i.e. '0' or '1'),
"BYte",
"Char",
"Double",
"Float",
"Int",
"Long",
"Object" (Object, i.e. a registered bean),
"SHort", and
"STring".value
- the value from Rexx (a string) to be converted to the
Java type.
org.apache.bsf.BSFException
private java.lang.Object convFromRexx(java.lang.String value) throws org.apache.bsf.BSFException
value
- this String is used to look up the BSF registry. If an entry is found (a
Java object) it will get returned, if not (or the value is null
) then
null
is returned.
object
stored in the BSF registry, null
else
org.apache.bsf.BSFException
java.lang.Object[] coerceArgs(java.lang.Object[] funcArgs, java.lang.Class[] paramTypes)
funcArgs
- an Object
array (actually the Rexx arguments of type
String
)paramTypes
- an Class
array, containing the Java class objects to which
the Rexx arguments have to be converted to
null
else.protected boolean unregisterBean(java.lang.String beanName)
beanName
- name of the Bean to be unregistered
true
, if the Bean exists, false
else.protected java.lang.String makeString4Rexx(java.lang.Object o)
o
- the object which should get returned as a string to Rexx.
null
,
then the string of null4Rexx
is returned to Rexx.
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