Difference between revisions of "Excelreader-call"
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To use an ''excelreader-call'' in a {{GVESB}} service, you need to perfom the following steps: | To use an ''excelreader-call'' in a {{GVESB}} service, you need to perfom the following steps: | ||
| − | [[File:Service-GVvcl-excel.png|right|thumb|{{VULCON}}service excel-reader configuration ]] | + | [[File:Service-GVvcl-excel.png|right|thumb|{{VULCON}} service excel-reader configuration ]] |
* In {{L_VULCON}} [[Service section ({{VULCON}})]] select the services that you want modify or you can create a new Services | * In {{L_VULCON}} [[Service section ({{VULCON}})]] select the services that you want modify or you can create a new Services | ||
* On flow tag, click the right mouse button and select "insert before" | * On flow tag, click the right mouse button and select "insert before" | ||
Revision as of 20:52, 29 September 2011
Definition
Many IT applications, within their business process, need to read an Excel file. Gvvcl-excelreader plug-in helps IT organizations integrating applications that use Excel format to execute their business. Gvvcl-excelreader plug-in is compatible with all Excel formats up to version 2003, and it is very simple to configure. It receives in input a binary stream containing the Excel file, and returns in output a corresponding XML structure. At the output of Gvvcl-excelreader plug-in is possible to apply a ChangeGvBufferNode operation (with OGNL script or an XSL transformation) to retrieve all interested data.
GreenVulcano® ESB provides two different tools, GV Console® and VulCon®, to configure all supported plug-ins in GV services.
VulCon Configuration
excelreader-call is the operation that must be configured into VulCon® System section (VulCon), to convert an Excel file in GVBuffer.object field, in an XML document.
In order to add an operation excelreader-call you must perform the following operation:
- Open VulCon® System section (VulCon)
- Then click right mouse button and select "insert before" label --> excelreader-call
- In layout fill in field name, i.e. the name of operation that will be used in VulCon® Service section (VulCon)
- 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:
- In VulCon® Service section (VulCon) select the services that you want modify or you can create a new Services
- On flow tag, click the right mouse button and select "insert before"
- On the list of GreenVulcano node select GvOperationNode
- On the template that appears, select from drop down list, input field, next-node-id and as operation-name the operation configured in the system. Fill in fields id and output.
- Use VulCon® function Export in compressed file
- Reload configuration (GV Console) from GV Console®
At this point you have inserted an excelreader-call operation within a GreenVulcano® ESB service.
GV Console Configuration
excelreader-call is the operation that must be configured into GV Console® System section (GV Console), to convert an Excel file in GVBuffer.object field, in a XML document.
To add an operation excelreader-call you must perform the following operation:
- Open GV Console® System section (GV Console)
- Click button "insert before" and select label --> excelreader-call
- In layout fill in field name, i.e. the name of operation that will be used in VulCon® Service section (VulCon)
- Other fields class, onlyData and type will be ignored
At this point, you have configured an operation of type excelreader-call in GV Console®.
To use an excelreader-call in a GreenVulcano® ESB service, you need to perfom the following steps:
- In GV Console® Service section (GV Console) select the services that you want to modify or, alternatively, you can create a new Services
- On flow tag, click the add operation node button and select "insert before"
- On the list of GreenVulcano node select GvOperationNode
- On the template that appear, select from drop down list, input field, next-node-id and as operation-name the operation configured in the system. Fill in fields id and output.
- Click save button and terminate editing
- Reload configuration (GV Console) from GV Console®
At this point you have configured a service with an excelreader operation.
Example
This example shows an XML document generated by a simple Excel sheet (without cols and rows grouping). Given an Excel sheet 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 generates 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[ID1]]></data>
</col>
<col number="1">
<data><![CDATA[ID2]]></data>
</col>
<col number="2">
<data><![CDATA[ID3]]></data>
</col>
<col number="3">
<data><![CDATA[ID4]]></data>
</col>
<col number="4">
<data><![CDATA[ID5]]></data>
</col>
<col number="5">
<data><![CDATA[ID6]]></data>
</col>
<col number="6">
<data><![CDATA[ID7]]></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 ChangeGvBufferNode is possible parsing XML and retrieve any tag and value.
