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Author:halw

Browse Source 
Date:2008-12-01T22:45:08.000000Z


git-svn-id: https://svn.eiffel.com/eiffel-org/trunk@112 abb3cda0-5349-4a8f-a601-0c33ac3a8c38
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halw
2008-12-01 22:45:08 +00:00
parent 7312cec21e
commit bba0936e07
11 changed files with 282 additions and 252 deletions
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85
documentation/current/solutions/other-languages/eiffel2java/eiffel2java-sample.wiki
View File

@@ -43,58 +43,59 @@ Value of `my_integer' after call to `my_method' is 2
===Code description===
<code>(Eiffel Code)
class
EIFFEL_TO_JAVA
inherit
SHARED_JNI_ENVIRONMENT
class
EIFFEL_TO_JAVA
inherit
SHARED_JNI_ENVIRONMENT
create
make
make
feature -- Creation
feature -- Creation
make is
local
class_test: JAVA_CLASS
instance_of_class_test: JAVA_OBJECT
fid: POINTER
value: INTEGER
j_args: JAVA_ARGS
do
--| Creation of the Java object
class_test := jni.find_class ("test")
create instance_of_class_test.create_instance (class_test, "()V", Void)
make
local
class_test: JAVA_CLASS
instance_of_class_test: JAVA_OBJECT
fid: POINTER
value: INTEGER
j_args: JAVA_ARGS
do
--| Creation of the Java object
class_test := jni.find_class ("test")
create instance_of_class_test.create_instance (class_test, "()V", Void)
--| Access to a public attribute
fid := instance_of_class_test.field_id ("my_integer", "I")
--| Access to a public attribute
fid := instance_of_class_test.field_id ("my_integer", "I")
-- 'fid' contains the id of the field 'my_integer'
-- 'value' contains the value of the field referenced
-- by 'fid'
-- 'fid' contains the id of the field 'my_integer'
-- 'value' contains the value of the field referenced
-- by 'fid'
value := instance_of_class_test.integer_attribute (fid)
value := instance_of_class_test.integer_attribute (fid)
--| Access to a static attribute using directly the JAVA_CLASS
fid := class_test.field_id ("my_static_integer", "I")
value := class_test.integer_attribute (fid) ...
--| Access to a static attribute using the attribute 'jclass'
fid := instance_of_class_test.jclass.field_id ("my_static_integer", "I")
value := instance_of_class_test.jclass.integer_attribute (fid)
--| Access to the method 'my_method'
-- Get the id of 'my_method'
fid := instance_of_class_test.method_id ("my_method", "(ILjava/lang/String;)V")
--| Access to a static attribute using directly the JAVA_CLASS
fid := class_test.field_id ("my_static_integer", "I")
value := class_test.integer_attribute (fid)
-- Create the set of arguments for 'my_method'
create j_args.make(2)
j_args.push_int (2)
j_args.push_string("String test")
-- Create the set of arguments for 'my_method'
-- Call to the void method referenced by 'fid'
instance_of_class_test.void_method (fid, j_args)
end -- make
--| Access to a static attribute using the attribute 'jclass'
fid := instance_of_class_test.jclass.field_id ("my_static_integer", "I")
value := instance_of_class_test.jclass.integer_attribute (fid)
--| Access to the method 'my_method'
-- Get the id of 'my_method'
fid := instance_of_class_test.method_id ("my_method", "(ILjava/lang/String;)V")
-- Create the set of arguments for 'my_method'
create j_args.make(2)
j_args.push_int (2)
j_args.push_string("String test")
-- Create the set of arguments for 'my_method'
-- Call to the void method referenced by 'fid'
instance_of_class_test.void_method (fid, j_args)
end -- make
end -- class EIFFEL_TO_JAVA</code>

17
documentation/current/solutions/other-languages/eiffel2java/eiffel2java-tutorial.wiki
View File

@@ -10,14 +10,15 @@ The Java interface allows you to call Java routines or attributes from your Eiff
===Requirements===
* JDK 1.1.8 or newer should be correctly set up (download it at [http://java.sun.com/javase/downloads/index.jsp http://java.sun.com/javase/downloads/index.jsp] )
* The environment variable CLASSPATH should defined (check with the JDK documentation on how to do so) and that it contains the Java classes you want to access.
* The environment variables should be setup correctly. See $ISE_EIFFEL\library\Eiffel2Java\README.txt for information how to do this..
* The environment variables should be setup correctly. See $ISE_EIFFEL\library\Eiffel2Java\README.txt for information how to do this.
===Borland users===
On Windows, the JDK includes a set of C libraries which have been compiled for the Microsoft C compiler. Before being able to use the JDK from Eiffel you need to perform the following operation:
# In $JDK_HOME\lib, rename javai.lib into javai.lib.microsoft
# From the DOS command prompt and in the directory $JDK_HOME\lib, launch the following command <br/>
<code>%ISE_EIFFEL%\bcc55\bin\implib javai.lib..\bin\javai.dll</code>
<code lang=text>
%ISE_EIFFEL%\bcc55\bin\implib javai.lib..\bin\javai.dll</code>
===Limitations===
@@ -143,17 +144,21 @@ When you want to call a Java method or access a field, you need to specify its s
|}
The signature for a Java class has the following form:
<code>L fully-qualified-class;</code>
<code lang=text>
L fully-qualified-class;</code>
For example, class String:
<code>Ljava/lang/String;</code>
<code lang=text>
Ljava/lang/String;</code>
The signature for a method has the following form:
<code>(arguments-types) returned-types</code>
<code lang=text>
(arguments-types) returned-types</code>
For example, the signature of a method that takes as arguments an integer and a string and return void is:
<code>(ILjava/lang/String;)V</code>
<code lang=text>
(ILjava/lang/String;)V</code>