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Merged
merged 2 commits into from
Dec 29, 2021
Merged

Implementation of Document Management for SAP ERP. #503

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50059b6
Implementation fo Document Management funcions for SAP ERP on JAVA.
AlejandroP Dec 21, 2021
7e0a889
Merge branch 'master' into sap_documents
AlejandroP Dec 29, 2021
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75 changes: 71 additions & 4 deletions java/src/main/java/com/genexus/sap/DestinationProvider.java
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Original file line number Diff line number Diff line change
Expand Up @@ -6,9 +6,11 @@
import com.genexus.diagnostics.Log;
import com.sap.conn.jco.ext.DestinationDataEventListener;
import com.sap.conn.jco.ext.DestinationDataProvider;
import com.sap.conn.jco.ext.ServerDataEventListener;
import com.sap.conn.jco.ext.ServerDataProvider;
import com.sap.conn.jco.ext.Environment;

public class DestinationProvider implements DestinationDataProvider
public class DestinationProvider implements DestinationDataProvider, ServerDataProvider
{

private static DestinationProvider _instance;
Expand All @@ -19,10 +21,10 @@ public static DestinationProvider Instance()
_instance = new DestinationProvider();
}
return _instance;

}

private String SAP_SERVER = "SAP_SERVER";
private String SAP_DOC_SERVER = "DMS_SERVER";
private Properties connectionProperties;
private Hashtable<String, Properties> connectionList = new Hashtable<String, Properties>();
private DestinationDataEventListener eventListener;
Expand Down Expand Up @@ -52,7 +54,6 @@ public Properties getDestinationProperties(String sessionName)
public boolean supportsEvents()
{
return true;

}

/*@Override*/
Expand All @@ -61,6 +62,73 @@ public void setDestinationDataEventListener(DestinationDataEventListener eventLi
this.eventListener = eventListener;
}

@Override
public Properties getServerProperties(String serverName) {
if (serverName != null)
{
Properties val = connectionList.get(serverName);
if (val != null)
{
return val;
}
else
{
return null;
}
}
else
{
return null;
}
}

@Override
public void setServerDataEventListener(ServerDataEventListener arg0) {
// Our logon parameters don't change dynamically, so we don't need to fire events. See above comment on DestinationDataEventListener.
}

public void removeServerProperties(String serverName)
{
if (eventListener != null)
{
eventListener.deleted(serverName);
}
connectionProperties = null;
connectionList.remove(serverName);
}

public void setServerProperties( String serverName, Properties properties)
{
if ( serverName == null || serverName.equals(""))
{
serverName = SAP_DOC_SERVER;
}
if (!Environment.isServerDataProviderRegistered())
{
Environment.registerServerDataProvider(this);
}
if (properties == null)
{
if (eventListener != null)
{
eventListener.deleted( serverName);
}
connectionProperties = null;
connectionList.remove( serverName);
}
else
{
Log.info("GX SAP Doc Server - Setting Properties : " + serverName + " total : " + Integer.toString(connectionList.size()));
connectionProperties = properties;
connectionList.put( serverName, connectionProperties);
if (eventListener != null)
{
eventListener.updated(serverName);
}
}
}


public void removeConnectionProperties(String sessionName)
{
if (eventListener != null)
Expand All @@ -76,7 +144,6 @@ public void setConnectionProperties( String sessionName, Properties properties)
if ( sessionName == null || sessionName.equals(""))
{
sessionName = SAP_SERVER;

}
if (!Environment.isDestinationDataProviderRegistered())
{
Expand Down
130 changes: 130 additions & 0 deletions java/src/main/java/com/genexus/sap/DocumentClient.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,130 @@
package com.genexus.sap;

import java.io.*;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

import com.sap.conn.jco.AbapClassException;
import com.sap.conn.jco.AbapException;

import com.sap.conn.jco.JCoFunction;
import com.sap.conn.jco.JCoParameterList;
import com.sap.conn.jco.JCoTable;
import com.sap.conn.jco.server.JCoServer;
import com.sap.conn.jco.server.JCoServerContext;
import com.sap.conn.jco.server.JCoServerContextInfo;
import com.sap.conn.jco.server.JCoServerErrorListener;
import com.sap.conn.jco.server.JCoServerExceptionListener;

import com.sap.conn.jco.server.JCoServerFunctionHandler;

public class DocumentClient {
private static final int BLOB_LENGTH = 1022;

static class ErrorHandler implements JCoServerErrorListener, JCoServerExceptionListener {

@Override
public void serverExceptionOccurred(JCoServer server, String connectionID, JCoServerContextInfo serverCtx, Exception error) {
// Technical problem in server connection (network, logon data, etc.)
error.printStackTrace();
}

@Override
public void serverErrorOccurred(JCoServer server, String connectionID, JCoServerContextInfo serverCtx, Error error) {
// Technical problem in server connection (out-of-memory, etc.)
error.printStackTrace();
}

}

// BAPI_DOCUMENT_CHECKOUTVIEW2 will send the file data via this function module.
static class FTP_R3_TO_CLIENTHandler implements JCoServerFunctionHandler {

@Override
public void handleRequest(JCoServerContext serverCtx, JCoFunction function) throws AbapException, AbapClassException {
String fname;
int length;
JCoTable blob;

// In the case of BAPI_DOCUMENT_CHECKOUTVIEW2, MODE is always binary, so the MODE and TEXT parameters of FTP_R3_TO_CLIENT can be ignored.
JCoParameterList imports = function.getImportParameterList();
fname = imports.getString("FNAME");
length = imports.getInt("LENGTH");
blob = function.getTableParameterList().getTable("BLOB");
FileOutputStream out = null;
try {
out = new FileOutputStream(fname);
boolean hasNextRow = false;
if (!blob.isEmpty()){
hasNextRow = true;
blob.firstRow();
}
while (length > BLOB_LENGTH){
if (hasNextRow){
out.write(blob.getByteArray(0), 0, BLOB_LENGTH);
length -= BLOB_LENGTH;
hasNextRow = blob.nextRow();
}
else throw new IOException("Not enough data in table BLOB ("+String.valueOf(BLOB_LENGTH * blob.getNumRows())+") for requested file size (" + String.valueOf(length) + ")");
}
if (length > 0){
if (hasNextRow) out.write(blob.getByteArray(0), 0, length);
else throw new IOException("Not enough data in table BLOB ("+String.valueOf(BLOB_LENGTH * blob.getNumRows())+") for requested file size (" + String.valueOf(length) + ")");
}
}
catch (IOException e) {
e.printStackTrace();
function.getExportParameterList().setValue("ERROR", 3);
}
finally{
if (out != null){
try{
out.close();
}
catch (IOException ioe){}
}
}
}

}

static class FTP_CLIENT_TO_R3Handler implements JCoServerFunctionHandler {
@Override
public void handleRequest(JCoServerContext serverCtx, JCoFunction function) throws AbapException, AbapClassException {
String fname;

fname = function.getImportParameterList().getString("FNAME");
fname = fname.replace("#","");

try (InputStream source = Files.newInputStream(Paths.get(fname));) {

byte[] file2 = new byte[BLOB_LENGTH];
int bytesread;
int totallenght =0;

InputStream source2 = Files.newInputStream(Paths.get(fname));

JCoTable blobtable = function.getTableParameterList().getTable("BLOB");
while((bytesread = source2.read(file2,0,file2.length)) >0 )
{

blobtable.appendRow();
blobtable.setValue("LINE", file2);
totallenght += bytesread;
}

JCoParameterList exports = function.getExportParameterList();
exports.setValue("LENGTH", totallenght);
}
catch (IOException e) {
e.printStackTrace();
function.getExportParameterList().setValue("ERROR", 3);
}
}
}



}
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