Excelreader-call

Definition

Many IT applications in their business process needs read an excel file. GreenVulcano Gvvcl-excel-reader Plug-in helps IT organizations integrate applications that utilize excel format to execute their business. Gvvcl-excel-reader Plug-in is compatible with all Excel format up to 2003, and is very simple to configure. It receive in input a stream of excel file and give in output an XML structure. At the output of Gvvcl-excel-reader Plug-in is possible apply a changeGvBuffer operation (with ognl script or a xsl stylesheet) to retrieve all interest data.

GreenVulcano ESB provides two tools, GVConsole and Vulcon, to configure all GreenVulcano supported Plug-ins in GV services.

Vulcon Configuration

excelreader-call is the operation that must be configured into Vulcon system section, to convert a Excel file, in GVBuffer.object field, in a XML document.

File:CreateOperationExcelReader.png

Vulcon system excel-reader configuration

To add an operation excelreader-call user must perform the following operation:

• You open Vulcon system section and his channel
• You clicks the right mouse button and select "insert before" label --> excelreader-call
• In layout you fill in field name, i.e. the name of operation that will be used in Vulcon service section
• Other fields class, onlyData and type will be ignored

At this point, you have configured an operation of type excelreader-call.

To use an excelreader-call in a GreenVulcano ESB service, you need to perfom the following steps:

File:Service-GVvcl-excel.png

Vulcon service excel-reader configuration

• In Vulcon services Section select the services that you want modify or you can create a new Services
• On flow tag, you clicks the right mouse button and select "insert before"
• On the list of GreenVulcano node select GvOperationNode
• On the template that appear, you must select from drop down list, input fiel, next-node-id and as operation-name the operation configured in the system. Fill in fields id and output.

At this point you have use excelreader-call operation in a GreenVulcano service.

Example use

This example shows a XML document generated by a simple excel (without cols and rows grouping). Give an xml with the following structure:

ID1	ID2	ID3	ID4	ID5	ID6	ID7
23	23232	23	23333	1	2	3
24	24444	23	23332	1	2	3

excelreader-call generate the following xml:

<?xml version="1.0" encoding="UTF-8"?>
<workbook>
    <sheet number="0">
        <name><![CDATA[Foglio1]]></name>
        <row number="0">
            <col number="0">
                <data><![CDATA[SOURCE_RNCID]]></data>
            </col>
            <col number="1">
                <data><![CDATA[SOURCE_CELLID]]></data>
            </col>
            <col number="2">
                <data><![CDATA[TARGET_RNCID]]></data>
            </col>
            <col number="3">
                <data><![CDATA[TARGET_CELLID]]></data>
            </col>
            <col number="4">
                <data><![CDATA[selectionPriority]]></data>
            </col>
            <col number="5">
                <data><![CDATA[qOffset1sn]]></data>
            </col>
            <col number="6">
                <data><![CDATA[qOffset2sn]]></data>
            </col>
        </row>
        <row number="1">
            <col number="0">
                <data><![CDATA[23]]></data>
            </col>
            <col number="1">
                <data><![CDATA[23232]]></data>
            </col>
            <col number="2">
                <data><![CDATA[23]]></data>
            </col>
            <col number="3">
                <data><![CDATA[711]]></data>
            </col>
            <col number="4">
                <data><![CDATA[1]]></data>
            </col>
            <col number="5">
                <data><![CDATA[1]]></data>
            </col>
            <col number="6">
                <data><![CDATA[1]]></data>
            </col>
        </row>
        <row number="2">
            <col number="0">
                <data><![CDATA[23]]></data>
            </col>
            <col number="1">
                <data><![CDATA[711]]></data>
            </col>
            <col number="2">
                <data><![CDATA[23]]></data>
            </col>
            <col number="3">
                <data><![CDATA[23232]]></data>
            </col>
            <col number="4">
                <data><![CDATA[1]]></data>
            </col>
            <col number="5">
                <data><![CDATA[1]]></data>
            </col>
            <col number="6">
                <data><![CDATA[1]]></data>
            </col>
        </row>
    </sheet>
</workbook>

With a node ChangeGVBuffer is possible parsing XML and retrieve any tag and value of XML.