generated wrapper java file from interface header file by swig is empty - cmake

Question

My generated example.java has no code from the interface specified in the header file.
example.i:
%module example
%include "std_string.i"
%{
#include "storagepoc/storagepoc.h"
%};
using namespace std;
typedef std::string String;
%include "storagepoc.h";
storagepoc.h:
#ifndef STORAGEPOC_H
#define STORAGEPOC_H
#include <string>
class Aws::S3::S3Client;
namespace storagepoc {
class StoragePOC {
public:
/* Constructor */
StoragePOC(const std::string &options);
/* Destructor */
~StoragePOC();
/* Copy image */
std::string CopyImage(const std::string &input_url, const std::string
&storage_url, const std::string &options);
private:
std::shared_ptr<Aws::S3::S3Client> m_client;
};
}
#endif
CMakeLists.txt:
SET(CMAKE_SWIG_FLAGS -package com.intel.proxy)
swig_add_library(example LANGUAGE java TYPE USE_BUILD_SHARED_LIBS SOURCES
example.i)
SWIG_LINK_LIBRARIES(example storagepoc)
# For convenience we copy the dynamic library to the current build folder
add_custom_command(
TARGET example
POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_if_different $<TARGET_FILE:example>
${CMAKE_CURRENT_BINARY_DIR}
)
# Build the Java code into ExampleJNI.jar
add_jar(
ExampleJNI
SOURCES
VERSION 0.0.1
${CMAKE_SWIG_OUTDIR}/example.java
${CMAKE_SWIG_OUTDIR}/exampleJNI.java
)
add_dependencies( ExampleJNI example )
#link ExampleJNI with its dependencies
#target_link_libraries(ExampleJNI example)
# Finally build the demonstration code into Main.jar
set(CMAKE_JAVA_JAR_ENTRY_POINT main)
add_jar(
Main
SOURCES main.java
VERSION 0.0.1
ENTRY_POINT main
)
add_dependencies( Main ExampleJNI )
The generated example.java is empty ???
The exampleJNI.java has the generated interface methods - StoragePOC_CopyImage...
My earlier example.java was using a
%inline %{
namespace jni {
extern int foo();
}
%}
and this generated an example.java wrapper file ??
TIA

Answer 1

Had to add the following to my example.i:
%pragma(java) modulecode=%{
public static String CopyImage(String input_url, String storage_url, String options) {
return new StoragePOC(options).CopyImage(input_url, storage_url, options);
}
%}
Section 21.4.2.1 http://www.swig.org/Doc1.3/Java.htm