How to update dynamic value to mergedfield (If condition )

Can we passed dynamic parameter to word template file and can used in merged field for if condition? And print barcode

{IF {MERGEFIELD isBarCode ="true"} {DISPLAYBARCODE "{MERGEFIELD WOBarcode \* MERGEFORMAT }" s:CODE128-w:13\h 300\t\* MERGEFORMAT } {MERGEFIELD WOBarcode \* MERGEFORMAT } }

Sample code :

public void executeMailMerge4 ( String outputDocumentName ) throws Exception {
	try {
			
		//SetLocaleUtil objSetLocaleUtil = new SetLocaleUtil();
		//objSetLocaleUtil.setLocale(param); //RSTK-12384
			
		Locale current = CurrentThreadSettings.getLocale();
		System.out.println("Current thread Local : "+CurrentThreadSettings.getLocale());
			
		String userLocale = "de_AT";
		String[] locValue = userLocale.split("_");
			
		if (locValue.length == 1) {
			Locale loc1 = new Locale(locValue[0]);
			CurrentThreadSettings.setLocale(loc1);
			localRSTK = loc1;
			System.out.println("Hello");
		}

		if (locValue.length == 2) {
			Locale loc1 = new Locale(locValue[0], locValue[1]);
			CurrentThreadSettings.setLocale(loc1);
			localRSTK = loc1;
				
		}
					
		System.out.println("CurrentThreadSettings.getLocale :: "+ CurrentThreadSettings.getLocale());
		doc = new Document(strPath + "Credit Memo Template.docx");
			
		// Remove those pesky macros - if any added
		if ( doc.hasMacros()) {
			doc.removeMacros(); 
		}
		merge = doc.getMailMerge() ;
			
			
			
		// document cleanup settings
		merge.setCleanupOptions(merge.getCleanupOptions() & ~MailMergeCleanupOptions.REMOVE_UNUSED_REGIONS) ;
			
		// document cleanup settings
		//doc.getMailMerge().setCleanupOptions(MailMergeCleanupOptions.REMOVE_CONTAINING_FIELDS); //RSTK-14782		
        // merge doc table fields
			
		// TODO supprt for links and any other field types. Needs to be handled while merging the field with value!!

		// Reading the data from xml file for the mail merge
			
		DataSet dataSet = new DataSet() ;
		dataSet.readXml(strPath + "inputxml.xml");
			
						
		//merge.setMergeDuplicateRegions(true);
		//readXmlFile(xmlFilepath);		

			
			
		//Start RSTK-16084
		int cleanupOptions = MailMergeCleanupOptions.REMOVE_UNUSED_REGIONS |
		MailMergeCleanupOptions.REMOVE_CONTAINING_FIELDS |
		MailMergeCleanupOptions.REMOVE_UNUSED_FIELDS | 
		MailMergeCleanupOptions.REMOVE_EMPTY_PARAGRAPHS;

		doc.getMailMerge().setCleanupOptions(cleanupOptions);
		doc.getMailMerge().executeWithRegions(dataSet);
		//END RSTK-16084 	
			
		
			
		// merge the header fields
		DataTableCollection tables = dataSet.getTables() ;
		if (tables != null && tables.getCount() > 0) {
			merge.execute( tables.get("PrintForm") );
		}
		// document cleanup settings
		doc.getMailMerge().setCleanupOptions(MailMergeCleanupOptions.REMOVE_CONTAINING_FIELDS); //RSTK-14782		
        // merge doc table fields
		merge.executeWithRegions(dataSet);			

		//removeBlankRows ( doc ) ;
			
		doc.getFieldOptions().setBarcodeGenerator(new BarcodeGenerator());

		doc.setFontSettings(new FontSettings()); //RSTK-14775
		doc.getFontSettings().setFontsSources(new FontSourceBase[] { new FolderFontSource(".fonts/", true)});
		doc.setWarningCallback(new FontSubstitutionWarningCollector());
			
		System.out.println("After Font printing...........");
			
		//start RSTK-12738
		com.aspose.words.PdfSaveOptions saveOption = new com.aspose.words.PdfSaveOptions();
		com.aspose.words.DownsampleOptions downSampleOption = new DownsampleOptions();
		downSampleOption.setDownsampleImages(false);			
		saveOption.setDownsampleOptions(downSampleOption);		
		//END RSTK-12738
			
		doc.getMailMerge().deleteFields(); //RSTK-16084
		doc.updateFields(); //Aspose-words-22.12.jar causes java.lang.NullPointerException while using {PAGE \* MERGEFORMAT} {NUMPAGES \* MERGEFORMAT}
		//Saving document as pdf
		doc.save(strPath + "de_AT_OutPutFile1_java17.pdf",saveOption);	
		//objSetLocaleUtil.restoreLocale();
		CurrentThreadSettings.setLocale(current);
			
	}
	catch ( Exception e) {
		System.out.println( e.getMessage());
		e.printStackTrace();
		//throw new MergeException(e.getMessage());
	}
}

@akondewar Sure, you can simply use mergefield in the IF field condition. Field code should look like this:
{IF "{ MERGEFIELD isBarCode }" = "true" "here is TRUE value" "here is FALSE value" }

Also, in your case you can use MERGEBARCODE field instead of DISPLAYBARCODE. Something like this:
{ MERGEBARCODE test QR }

Upon executing mail merge MERGEBARCODE field is converted to DISPLAYBARCODE field with the corresponding value.

Thanks for reply.
I have another question,

{IF {MERGEFIELD isBarCode ="true"} {DISPLAYBARCODE "{MERGEFIELD WOBarcode \* MERGEFORMAT }" s:CODE128-w:13\h 300\t\* MERGEFORMAT } {MERGEFIELD WOBarcode \* MERGEFORMAT } }

Is it possible to set the value of ‘isBarCode’ dynamically if it is not present in the input XML file? Then how? Please provide sample code for the same.

@akondewar You can simply execute mail merge with the required field. For example using code like this:

Document doc = new Document("C:\\Temp\\in.docx");
doc.getMailMerge().execute(new String[] { "isBarCode" }, new Object[] { "true" });

Hi @alexey.noskov
I am using provide sample code, it’s working fine in header section, but does not work for details section.

Condition : Working fine is headed section

{IF {MERGEFIELD isBarcode}="true" {DISPLAYBARCODE "{MERGEFIELD WOBarcode \*MERGEFORMAT }" s:CODE128-w:13\h 300\t\* MERGEFORMAT}" {MERGEFIELD WOBarcode \*MERGEFORMAT}}

Detail section :
{IF {MERGEFIELD isBarcode}="true" {DISPLAYBARCODE "{MERGEFIELD ItemBarcode \*MERGEFORMAT }" s:CODE128-w:13\h 300\t\* MERGEFORMAT}" {MERGEFIELD Line \*MERGEFORMAT}}

Input xml, sample code and input word template is attached.

Forum.zip (87.5 KB)

@akondewar The problem occurs because isBarcode field in the details section is in the region so it is not filled when simple mail merge is executed. Since upon executing mail merge with regions REMOVE_CONTAINING_FIELDS and REMOVE_UNUSED_FIELDS clean up options are enabled, IF and unfilled isBarcode are removed. In your case you should modify the code like this:

Document doc = new Document("C:\\Temp\\in.docx");

DataSet dataSet = new DataSet();
dataSet.readXml("C:\\Temp\\data.xml");

int cleanupOptions = MailMergeCleanupOptions.REMOVE_UNUSED_REGIONS |
        MailMergeCleanupOptions.REMOVE_EMPTY_PARAGRAPHS;

doc.getMailMerge().setCleanupOptions(cleanupOptions);
doc.getMailMerge().executeWithRegions(dataSet);

cleanupOptions |= MailMergeCleanupOptions.REMOVE_CONTAINING_FIELDS;
cleanupOptions |= MailMergeCleanupOptions.REMOVE_UNUSED_FIELDS;
doc.getMailMerge().setCleanupOptions(cleanupOptions);

String strIsBarcode = "true";
if (strIsBarcode != "")
{
    doc.getMailMerge().execute(new String[] { "isBarcode" }, new Object[] { strIsBarcode });
}

doc.save("C:\\Temp\\out.docx");

Hi @alexey.noskov
We can not remove doc.getMailMerge().deleteFields(); and doc.updateFields(); before save. I encountered the following issues, which I posted on the forum.

https://forum.aspose.com/t/java-lang-nullpointerexception-while-using-page-mergeformat-numpages-mergeformat-tag-in-word-template-file-when-row-remove-is-called-before-document-save/265912?u=akondewar

https://forum.aspose.com/t/when-using-if-condition-in-a-word-template-characters-starting-with-a-double-quote-do-not-appear-in-the-pdf/268188/6

Even I have added suggested code but did not works.

TXN-182.zip (66.1 KB)

@akondewar You should move the following code upper in your code:

String strIsBarcode = "true";
if (strIsBarcode != "")
{
    doc.getMailMerge().execute(new String[] { "isBarcode" }, new Object[] { strIsBarcode });
}

Exactly after:

int cleanupOptions = MailMergeCleanupOptions.REMOVE_UNUSED_REGIONS |
		MailMergeCleanupOptions.REMOVE_EMPTY_PARAGRAPHS;

doc.getMailMerge().setCleanupOptions(cleanupOptions);
doc.getMailMerge().executeWithRegions(dataSet);

cleanupOptions |= MailMergeCleanupOptions.REMOVE_CONTAINING_FIELDS;
cleanupOptions |= MailMergeCleanupOptions.REMOVE_UNUSED_FIELDS;
doc.getMailMerge().setCleanupOptions(cleanupOptions);		

In the code you have provided the code is executed after deleting all merge fields, so it does not have any effect.

After this change header barcode value also not printed.

@akondewar Please try saving the output document as DOCX and make sure the DISPLAYBARCODE field is there in the output document. Also, please try setting barcode generator before executing mail merge:

doc.getFieldOptions().setBarcodeGenerator(new BarcodeGenerator());

Hi @alexey.noskov
We are generating output is as a pdf , not a docx.
There are hundreds of live customers using pdf output instead of docx.

Kindly provide the solution.

@akondewar I understand that your target format is PDF. I mean save the document as DOCX for testing and analysis purposes.

Please try modifying your code like this:

merge = doc.getMailMerge();
// Merge unconditional MergeFields and Regions
merge.setUnconditionalMergeFieldsAndRegions(true);

// Reading the data from xml file for the mail merge
DataSet dataSet = new DataSet();
dataSet.readXml(strPath + "data.xml");

int cleanupOptions = MailMergeCleanupOptions.REMOVE_UNUSED_REGIONS |
        MailMergeCleanupOptions.REMOVE_EMPTY_PARAGRAPHS;

merge.setCleanupOptions(cleanupOptions);
merge.executeWithRegions(dataSet);

// merge the header fields
DataTableCollection tables = dataSet.getTables();
if (tables != null && tables.getCount() > 0)
    merge.execute(tables.get("PrintForm"));

cleanupOptions |= MailMergeCleanupOptions.REMOVE_CONTAINING_FIELDS;
cleanupOptions |= MailMergeCleanupOptions.REMOVE_UNUSED_FIELDS;
merge.setCleanupOptions(cleanupOptions);

String strIsBarcode = "true";
if (strIsBarcode != "")
    merge.execute(new String[] { "isBarcode" }, new Object[] { strIsBarcode });

@alexey.noskov
Thanks for the solution, we would like to know is there any regression on following issues

*1. How to update dynamic value to mergedfield (If condition ) - #13 by akondewar

2. When using 'IF' condition in a word template, characters starting with a double quote do not appear in the PDF - #6 by alexey.noskov

@akondewar There should not be any problems with the modified code. But it would be better to test on your side with your real data and templates.

@alexey.noskov
Hi ,
While using suggested code, we are facing another issue that is, at least one character is required before "{IF {MERGEFIELD displaybarcode }="true" {DISPLAYBARCODE "{MERGEFIELD WOBarcode \*MERGEFORMAT }" s:CODE128-w:13\h 300\t\* MERGEFORMAT}" {MERGEFIELD WOBarcode \*MERGEFORMAT}}" in the header section.

If we removed character before above condition then Barcode is not printed.

Sample code and genereated files attached.
22-Feb-2024_ToForum.zip (141.0 KB)

@akondewar It is required to accurately format the fields in the template to get the correct result. There must be whitespaces before and after condition operator in the IF field, there must be whitespaces between true and false values. If the values in the IF field have whitespaces they must be enclosed into double quotes.
If the field is formatted improperly, it cannot be parsed properly by both MS Word and Aspose.Words. You can save the output as MS Word document to make sure the resulting field is formatted properly and can be properly updated by MS Word.