Update parameter value in XML format - omnet++

I have parameters stored in an XML file. Below is a sample of the file.
<?xml version="1.0" encoding="UTF-8"?>
<root>
<terminal id="A">
<terminalCapacity>3</terminalCapacity>
<terminalMembers id="1">
<memberID>0001</memberID>
<memberCapacity>2</memberCapacity>
</terminalMembers>
</terminal>
<terminal id="B">
<terminalCapacity>4</terminalCapacity>
<terminalMembers id="1">
<memberID>0002</memberID>
<memberCapacity>1</memberCapacity>
</terminalMembers>
<terminalMembers id="2">
<memberID>0003</memberID>
<memberCapacity>3</memberCapacity>
</terminalMembers>
</terminal>
</root>
Each terminalID is associated to a type of simpleModule found in my NED file. The idea is to programmatically update these values throughout the simulation run. The current logic revolves around getting the current parameters in XML format and update the memberCapacity field.
From the Omnet cPar and cXMLElement documentation, I tried using the par("moduleParameter").xmlValue()->getXML() function, but this returns the XML as a string. I also tried using the getAttribute() function, but to no success.

Don't do this. par("moduleParameter").xmlValue() will give you the in memory object tree of the XML document, but that is not meant for modification. Your XML file seems to be just a hierarchical structure and modules and their parameters can mirror that exactly. There is absolutely no reason to reinvent the wheel when you can mirror that with INI file parameters.

Related

Problem loading sld raster style in Geoserver 2.15.1

When I try to load mi sld style to a hillshade raster (tif format) it gives me the folllowing message:
line 21: cvc-complex-type.2.1:the element 'sld: normalize' must not have any characters or any [child] element information elements, because the type content type is empty.
<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor xmlns="http://www.opengis.net/sld" version="1.0.0" xmlns:sld="http://www.opengis.net/sld" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc">
<UserLayer>
<sld:LayerFeatureConstraints>
<sld:FeatureTypeConstraint/>
</sld:LayerFeatureConstraints>
<sld:UserStyle>
<sld:Name>hill_22</sld:Name>
<sld:FeatureTypeStyle>
<sld:Rule>
<sld:RasterSymbolizer>
<sld:Opacity>0.2</sld:Opacity>
<sld:ChannelSelection>
<sld:GrayChannel>
<sld:SourceChannelName>1</sld:SourceChannelName>
<sld:ContrastEnhancement>
<sld:Normalize>
<sld:VendorOption name="algorithm">StretchToMinimumMaximum</sld:VendorOption>
<sld:VendorOption name="minValue">1</sld:VendorOption>
<sld:VendorOption name="maxValue">181</sld:VendorOption>
</sld:Normalize>
</sld:ContrastEnhancement>
</sld:GrayChannel>
</sld:ChannelSelection>
<sld:ColorMap>
<sld:ColorMapEntry quantity="0" color="#000000"/>
<sld:ColorMapEntry quantity="255" color="#ffffff"/>
</sld:ColorMap>
</sld:RasterSymbolizer>
</sld:Rule>
</sld:FeatureTypeStyle>
</sld:UserStyle>
</UserLayer>
</StyledLayerDescriptor>
This is caused because the GeoServer validator uses the OGC schema to validate the SLD, while specifying optional VendorOptions is not part of the standard. So as you know better than the computer you can ignore it and press apply and all will be fine.
If it really bothers you, you can submit a PR to update the schema used to accept this change.

How to extract values (list and unique tags) from xml in Nifi?

I have a xml file that contains some tags, one is unique other are same tags. I'd like to get values from these tags and convert them to another xml tag. Here is example of xml file:
<?xml version="1.0" encoding="UTF-8"?>
<entry dataset="Swiss-Prot" created="2005-04-26" modified="2019-11-13" version="158" xmlns="http://uniprot.org/uniprot" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<accession>Q96IY4</accession>
<accession>A8K464</accession>
<accession>Q15114</accession>
<accession>Q5T9K1</accession>
<accession>Q5T9K2</accession>
<accession>Q9P2Y6</accession>
<name>CBPB2_HUMAN</name>
<protein>
<recommendedName>
<fullName>Carboxypeptidase B2</fullName>
<ecNumber evidence="7">3.4.17.20</ecNumber>
</recommendedName>
<alternativeName>
<fullName>Carboxypeptidase U</fullName>
<shortName>CPU</shortName>
</alternativeName>
<alternativeName>
<fullName>Plasma carboxypeptidase B</fullName>
<shortName>pCPB</shortName>
</alternativeName>
<alternativeName>
<fullName>Thrombin-activable fibrinolysis inhibitor</fullName>
<shortName>TAFI</shortName>
</alternativeName>
</protein>...other tags
</entry>
I though of using EvaluateXQuery processor and EvaluateXPath. EvaluateXQuery is using for getting accession and alternativeName tags. EvaluateXPath is using for getting name, recommendedName (fullName) tags.
Is it possible to use both and combine them to only xml or hust necessary to use EvaluateXQuery processor, like this:
<accessions>Q96IY4, A8K464, Q15114,...</accessions>
<name>CBPB2_HUMAN</name>
<recommendedName>Carboxypeptidase B2</recommendedName>
<alternativeNames>Carboxypeptidase U-CPU, Plasma carboxypeptidase B-pCPB,...</alternativeNames>
Can you help me, please?
Thank you!
Hi you may use processor execute groovy script and parse xml with a script to get your values and put them into attributes.

XSL - Externalizing Xpath queries to a property file

I went through various posts, regarding reading properties from external property files. Looks like there is a function - getProperty, which can read values from a property file, using a key. I am using saxon parser with spring integration. I am trying something like this, as described in the post :-
spring context file:
<int-xml:xslt-transformer id="xsltTransformer" input-channel="bulkStringInboundChannel"
output-channel="toBridgeChannel" result-type="StringResult" **transformer-factory-class="net.sf.saxon.TransformerFactoryImpl"**
xsl-resource="classpath:/META-INF/spring/integration/intake/intake-flow/bulkTransformer.xsl" />
XSL style sheet:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
....
<xsl:variable name="props" select="document('prop.xml')" />
<xsl:value-of select="f:getProperty('query1')"/>
....
Prop.xml:
query1 = /Batch/RequestID/text()
Error description:
XPST0003: XPath syntax error at char 23 on line 30 in {f:getProperty('query1')}:
XTSE0650: No template exists named getProperty
I now have two questions- first of all, how do I get rid of these errors?
Second, can I store xPath queries in property files? The post describes a method, to read a property file and use the value pertaining to its key. However, I am thinking that getProperty will just print the query's text equivalent instead of evaluating the query and processing it. Is there a way to achieve this?
Post - How to read a .properties file inside a .xsl file?
I can't help you with the Spring side of the question, but as for the Saxon side, you can call the JDK method System.getProperty() using code like this:
<xsl:value-of select="System:getProperty('user.dir')" xmlns:System="java:java.lang.System"/>
Java extensibility requires Saxon-PE or higher.
If the value of the property that you read is an XPath expression, you can then execute it using the XSLT 3.0 xsl:evaluate instruction - which also requires Saxon-PE or higher.

How can I generate attributes with obj2xml for ruby classes generated from xsd2ruby?

I've used the utility xsd2ruby utility provided with soap4r to generate the required classes from an XSD schema definition file. This works well, however when I try to generate an xml file using XSD::Mapping.obj2xml the attributes do not get created as I expect (or would like). I would like the following:
<obj attr1=value1 attr2=value2>
<element1>value</element1>
</obj>
but this is what gets generated:
<obj>
<__xmlattr>
<item>
<key>
<name>attr1</name>
<namespace></namespace>
<source></source>
</key>
<value>value1</value>
</item>
<item>
<key>
<name>attr2</name>
<namespace></namespace>
<source></source>
</key>
<value>value2</value>
</item>
</__xmlattr>
<element1>value</element1>
</obj>
How can I generate the XML output without the xmlattr?
From what I remember XSD::Mapping.obj2xml XML will use an instance's instance variables as element names and their values as child elements. That's all. With the instance variable #__xmlattr getting special processing, as you can see.
To get around these limitations I wrote jaxb2ruby. It generates classes based on an ERB template. You can use one of the builtin templates (ROXML, HappyMapper, or plain ruby class) or write your own.
It's not perfect but has worked out well for me in several instances.
You may also want to checkout ROAR.

How to move property value from Properties file to payload object using spring integration elements

Sample.properties
=================
http.header.amisys.accept.value=arun/vnd.dsths.services-v1+xml
1)Above XSL automatically loaded when my server starts.
2)I have tried <int:enricher> element but it is not helped me.
Sample Code : Below is bit of code I have tried, Can any one suggest me on this.
<int:channel id="PQLegacySecurity-InputChannel" />
<int:chain input-channel="PQLegacySecurity-InputChannel" >
<!-- Split the Search Request Params from Xml -->
<int-xml:xpath-splitter>
<int-xml:xpath-expression expression="//LegacySecurity" namespace map="xmlMessageNamespace" />
</int-xml:xpath-splitter>
<int:enricher >
<int:payload name="testPayload" expression="${http.header.amisys.accept.value}"/>
</int:enricher>
</int:chain>
Actual Payload Object:Below is the xml which does not contain testPayload property.
<?xml version="1.0" encoding="UTF-8"?><LegacySecurity>
<businessArea>%%%%%%</businessArea>
<LegacySystem>%%%%%</LegacySystem>
<LegacyUserID>%%%%%</LegacyUserID>
<LegacyPassword>%%%%%</LegacyPassword>
<OtherLogin/>
<OtherPassword/>
<AddSecurLogin/>
<AddSecurPassword/>
</LegacySecurity>
Expected Payload Object: Below Object contains new element testPayload node which I should able to add
<?xml version="1.0" encoding="UTF-8"?><LegacySecurity>
<businessArea>%%%%%%</businessArea>
<LegacySystem>%%%%%</LegacySystem>
<LegacyUserID>%%%%%</LegacyUserID>
<LegacyPassword>%%%%%</LegacyPassword>
<OtherLogin/>
<OtherPassword/>
**<testPayload>arun/vnd.dsths.services-v1+xml</testPayload>**
<AddSecurLogin/>
<AddSecurPassword/>
</LegacySecurity>
You can use an xslt transformer. Something like the below, though you will need to figure out correct use of the transformer from the spring docs.
Notice you can pass a parameter through to the XSLT
<int-xml:xslt-transformer result-transformer="toDocumentTransformer" result-type="StringResult" xsl-resource="/xslt/addTestPayload.xslt">
<int-xml:xslt-param name="testPayload" value="${http.header.amisys.accept.value}"/>
</int-xml:xslt-transformer>
In the XSLT file, use this to pick up the parameter:
<xsl:param name="testPayload" />
If you have other changes you need to make to the message you can use the same xslt.

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