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org.milyn.edisax.unedifact.handlers.r41.UNBHandler Maven / Gradle / Ivy
/*
Milyn - Copyright (C) 2006 - 2010
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License (version 2.1) as published by the Free Software
Foundation.
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:
http://www.gnu.org/licenses/lgpl.txt
*/
package org.milyn.edisax.unedifact.handlers.r41;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.milyn.edisax.BufferedSegmentReader;
import org.milyn.edisax.EDIParseException;
import org.milyn.edisax.util.EDIUtils;
import org.milyn.edisax.interchange.ControlBlockHandler;
import org.milyn.edisax.interchange.InterchangeContext;
import org.milyn.edisax.model.internal.Component;
import org.milyn.edisax.model.internal.Field;
import org.milyn.edisax.model.internal.Segment;
import org.xml.sax.SAXException;
/**
* UNB Segment Handler.
* @author [email protected] toCharsetMapping;
static {
createSegmentsDefs();
createRepertoireToCharsetMap();
}
public void process(InterchangeContext interchangeContext) throws IOException, SAXException {
BufferedSegmentReader segmentReader = interchangeContext.getSegmentReader();
segmentReader.moveToNextSegment(false);
String[] fields = segmentReader.getCurrentSegmentFields();
interchangeContext.mapControlSegment(unbSegment, true);
String[] syntaxIdComponents = EDIUtils.split(fields[1], segmentReader.getDelimiters().getComponent(), segmentReader.getDelimiters().getEscape());
// First component (index 0) defines the char repertoire. Fourth
// component (index 3) is optional and can override...
if(syntaxIdComponents.length < 4) {
changeReadEncoding(syntaxIdComponents[0], interchangeContext.getSegmentReader());
} else {
changeReadEncoding(syntaxIdComponents[3], interchangeContext.getSegmentReader());
}
while(true) {
String segCode = segmentReader.peek(3);
if(segCode.equals("UNZ")) {
segmentReader.moveToNextSegment(false);
interchangeContext.mapControlSegment(unzSegment, true);
break;
} else {
ControlBlockHandler handler = interchangeContext.getControlBlockHandler(segCode);
handler.process(interchangeContext);
}
}
}
private void changeReadEncoding(String code, BufferedSegmentReader bufferedSegmentReader) throws EDIParseException, IOException {
Charset charset = toCharsetMapping.get(code.toUpperCase());
if(charset == null) {
throw new EDIParseException("Unknown UN/EDIFACT character stream encoding code '" + code + "'.");
}
bufferedSegmentReader.changeEncoding(charset);
}
private static void createSegmentsDefs() {
// UNB Segment Definition...
// http://www.gefeg.com/jswg/v41/se/se13.htm
unbSegment = new Segment();
unbSegment.setSegcode("UNB");
unbSegment.setXmltag("UNB");
unbSegment.setDescription("UNB - Interchange Header");
unbSegment.setTruncatable(true);
unbSegment.addField(new Field("syntaxIdentifier", true).
addComponent(new Component("id", true)).
addComponent(new Component("versionNum", true)).
addComponent(new Component("serviceCodeListDirVersion", false)).
addComponent(new Component("codedCharacterEncoding", false)).
addComponent(new Component("releaseNum", false)));
unbSegment.addField(new Field("sender", true).
addComponent(new Component("id", true)).
addComponent(new Component("codeQualifier", false)).
addComponent(new Component("internalId", false)).
addComponent(new Component("internalSubId", false)));
unbSegment.addField(new Field("recipient", true).
addComponent(new Component("id", true)).
addComponent(new Component("codeQualifier", false)).
addComponent(new Component("internalId", false)).
addComponent(new Component("internalSubId", false)));
unbSegment.addField(new Field("dateTime", true).
addComponent(new Component("date", true)).
addComponent(new Component("time", true)));
unbSegment.addField(new Field("controlRef", true));
unbSegment.addField(new Field("recipientRef", false).
addComponent(new Component("ref", true)).
addComponent(new Component("refQualifier", false)));
unbSegment.addField(new Field("applicationRef", false));
unbSegment.addField(new Field("processingPriorityCode", false));
unbSegment.addField(new Field("ackRequest", false));
unbSegment.addField(new Field("agreementId", false));
unbSegment.addField(new Field("testIndicator", false));
// UNZ Segment Definition...
// http://www.gefeg.com/jswg/v41/se/se21.htm
unzSegment = new Segment();
unzSegment.setSegcode("UNZ");
unzSegment.setXmltag("UNZ");
unzSegment.setDescription("UNZ - Interchange Trailer");
unzSegment.setTruncatable(true);
unzSegment.addField(new Field("controlCount", true));
unzSegment.addField(new Field("controlRef", true));
}
private static void createRepertoireToCharsetMap() {
toCharsetMapping = new HashMap();
// http://www.gefeg.com/jswg/cl/v41/40107/cl1.htm
addCharsetMapping("UNOA", "ASCII");
addCharsetMapping("UNOB", "ASCII");
addCharsetMapping("UNOC", "ISO8859-1");
addCharsetMapping("UNOD", "ISO8859-2");
addCharsetMapping("UNOE", "ISO8859-5");
addCharsetMapping("UNOF", "ISO8859-7");
addCharsetMapping("UNOG", "ISO8859-3");
addCharsetMapping("UNOH", "ISO8859-4");
addCharsetMapping("UNOI", "ISO8859-6");
addCharsetMapping("UNOJ", "ISO8859-8");
addCharsetMapping("UNOK", "ISO8859-9");
addCharsetMapping("UNOL", "ISO8859-15");
addCharsetMapping("UNOW", "UTF-8");
addCharsetMapping("UNOX", "ISO-2022-CN");
addCharsetMapping("UNOY", "UTF-8");
// http://www.gefeg.com/jswg/cl/v41/40107/cl17.htm
addCharsetMapping("1", "ASCII");
addCharsetMapping("2", "ASCII");
addCharsetMapping("3", "IBM500");
addCharsetMapping("4", "IBM850");
addCharsetMapping("5", "UTF-16");
addCharsetMapping("6", "UTF-32");
addCharsetMapping("7", "UTF-8");
addCharsetMapping("8", "UTF-16");
}
private static void addCharsetMapping(String code, String charsetName) {
if(Charset.isSupported(charsetName)) {
toCharsetMapping.put(code, Charset.forName(charsetName));
} else {
logger.debug("Unsupported character set '" + charsetName + "'. Cannot support for '" + code + "' if defined on the syntaxIdentifier field on the UNB segment. Check the JVM version etc.");
}
}
}
