Any way is it possible to pass dynamic value to the ref tag attribute in below code from java?
<bean id="jobLauncherTestUtils" class="org.springframework.batch.test.JobLauncherTestUtils" >
<property name="job" ref="$(dynamicValue)"/>
<property name="jobLauncher" ref="jobLauncher"/>
<property name="jobRepository" ref="jobRepository" />
</bean>
`
You can load them from a file of properties
If the value should be changed at runtime you must build and launch at runtime.
Related
I'm using Spring Batch 3.0.8.RELEASE. I want to read the contents of a CSV file and turn it into XML. I am familiar with reading CSV files in Spring Batch, but the behavior I've seen is "chunk" oriented processing....one line at a time, and I'm not sure this default behavior will work for me here.
Here is the CSV sample:
,WT4RT,AIG-00,694304F,9/1/2017,9/30/2017,"6,975.00",AIG-00201709,10/10/2017,USD,MC
,WT4RT,AIG-00,694317E,9/1/2017,9/30/2017,"2,583.80",AIG-00201709,10/10/2017,USD,MC
,WT4RT,AIG-00,694304G,9/1/2017,9/30/2017,"17,600.00",AIG-00201709,10/10/2017,USD,MC
,WT4RT,AIG-00,694304G,9/1/2017,9/30/2017,740,AIG-00201709,10/10/2017,USD,MC
I need to turn this data into the following XML format:
<?xml version="1.0" encoding="UTF-8"?>
<BillingAndCosting version="1.0">
<ControlArea>
<SenderId>CMS-BILLING-100</SenderId>
<WaterMark>92030293829329392030232</WaterMark>
<RecordCount>2</RecordCount>
<TimeStamp>2001-12-17T09:30:47-05:00</TimeStamp>
<DataFileName>String</DataFileName>
</ControlArea>
<DataArea>
<CustomerAccount>
<ExternalKey>1001</ExternalKey>
<ExternalSource>HBVenture</ExternalSource>
<BillingData>
<ReferenceID>0</ReferenceID>
<BillingInvoiceNumber>2000016</BillingInvoiceNumber>
<BillingInvoiceDate>2017-01-31T06:42:07.000Z</BillingInvoiceDate>
<BillingPeriodFromDate>2017-01-01T06:42:07.000Z</BillingPeriodFromDate>
<BillingPeriodThruDate>2017-01-31T06:42:07.000Z</BillingPeriodThruDate>
<BillingInvoiceType>NEW</BillingInvoiceType>
<BillingAmount CurrencyID="USD">1290.39</BillingAmount>
<InvoiceItem>
<CategoryCode>res-group</CategoryCode>
<TaxCategoryID>C2</TaxCategoryID>
<InvoiceItemAmount CurrencyID="USD">1290.39</InvoiceItemAmount>
<ProductID>694601F</ProductID>
<ISVUID>1</ISVUID>
</InvoiceItem>
</BillingData>
<BillingData>
<ReferenceID>0</ReferenceID>
<BillingInvoiceNumber>2000017</BillingInvoiceNumber>
<BillingInvoiceDate>2017-01-31T06:42:07.000Z</BillingInvoiceDate>
<BillingPeriodFromDate>2017-01-01T06:42:07.000Z</BillingPeriodFromDate>
<BillingPeriodThruDate>2017-01-31T06:42:07.000Z</BillingPeriodThruDate>
<BillingInvoiceType>NEW</BillingInvoiceType>
<BillingAmount CurrencyID="USD">590.39</BillingAmount>
<InvoiceItem>
<CategoryCode>gateway_resource_group</CategoryCode>
<TaxCategoryID>C2</TaxCategoryID>
<InvoiceItemAmount CurrencyID="USD">590.39</InvoiceItemAmount>
<ProductID>694601F</ProductID>
<ISVUID>1</ISVUID>
</InvoiceItem>
</BillingData>
I'm showing only a portion of the XML for brevity. The thing I don't know is: how to use Spring Batch to read the entire CSV file to populate an Object that I can then send to the XML Marshaller for converting into XML.
Can it be done with Spring batch, or do I have to 'roll my own'?
We use StaxEventItemWriter as ItemWriter (example below)
<bean id = "xmlItemWriter"
class = "org.springframework.batch.item.xml.StaxEventItemWriter">
<property name = "resource" value = "file:my_path_to_xml.xml" />
<property name = "marshaller" ref = "reportMarshaller" />
<property name = "rootTagName" value = "BillingAndCosting" />
</bean>
<bean id = "reportMarshaller"
class = "org.springframework.oxm.jaxb.Jaxb2Marshaller">
<property name = "classesToBeBound">
<list>
<value>BillingAndCosting</value>
</list>
</property>
</bean>
You can use FlatFileItemReader for reading the CSV file. Follow the below sample code:
ItemReader reads a complete line one by one from input csv file. FlatFileItemReader is used for reading the csv file.
<bean class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
<property name="fieldSetMapper">
<!-- Mapper which maps each individual items in a record to properties in POJO -->
<bean class="com.websystique.springbatch.ExamResultFieldSetMapper" />
</property>
<property name="lineTokenizer">
<!-- A tokenizer class to be used when items in input record are separated by specific characters -->
<bean class="org.springframework.batch.item.file.transform.DelimitedLineTokenizer">
<property name="delimiter" value="|" />
</bean>
</property>
</bean>
</property>
</bean>
XML ItemWriter which writes the data in XML format.
<bean id="xmlItemWriter" class="org.springframework.batch.item.xml.StaxEventItemWriter">
<property name="resource" value="file:xml/examResult.xml" />
<property name="rootTagName" value="UniversityExamResultList" />
<property name="marshaller">
<bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
<property name="classesToBeBound">
<list>
<value>com.websystique.springbatch.model.ExamResult</value>
</list>
</property>
</bean>
</property>
</bean>
You should also go through the official Spring docs Spring Docs
I want to resolve a property and specify the name of the property using a Spel expression. If I do this
<property name="host" value="#{T(...Constants).SINK_PROP_HOST}" />
the value gets resolved correctly to sink.host which is the value of this constant. Taking it a step further
<property name="host" value="${#{T(...Constants).SINK_PROP_HOST}}" />
This doesn't works. Any ideas how I can make it work. Essentially it should function the same as
<property name="host" value="${sink.host}" />
You can't do that, because properties are resolved before SpEL (you can do it the other way around).
This works...
public class Foo {
public static final String FOO = "foo.prop";
}
<util:properties id="props">
<prop key="foo.prop">bar</prop>
</util:properties>
<bean id="xx" class="foo.Bar">
<property name="foo" value="#{props[T(foo.Foo).FOO]}"/>
</bean>
You can, of course, load your "props" bean from a file.
I have a problem transfering code to Spring applicationContext.xml
The source is:
File inFile = new File ("path/to/file/", "fileName.docx")
WordprocessingMLPackage wordMLPackage = Docx4J.load(inFile);
My not working solution is:
<bean id="inFile" class="java.io.File">
<constructor-arg value="path/to/file/" />
<constructor-arg value="fileName.docx" />
</bean>
<bean id="docx4j" class="org.docx4j.Docx4J" factory-method="load">
<constructor-arg ref="inFile" />
</bean>
<bean id="wordprocessingMLPackage" class="org.docx4j.openpackaging.packages.WordprocessingMLPackage" factory-bean="docx4j" />
What I'm getting out of the bean "wordprocessingMLPackage" is indeed an instance of the Class WordprocessingMLPackage, but it seems empty although the File I'm trying to load isn't (and yes, the path is doublechecked).
When trying
MainDocumentPart mdp = wordprocessingMLPackage.getMainDocumentPart();
List<Object> content = mdp.getContent();
I'm getting a NullPointerException because mdp is null!
Has anyone an idea... or even a solution?
============================================================
I found a solution especially for my problem.
Here is the source of Docx4j.load():
public static WordprocessingMLPackage load(File inFile) throws Docx4JException {
return WordprocessingMLPackage.load(inFile);
}
That means I can create an instance of WordprocessingMLPackage by its static self!
The code which is working:
<bean id="wordprocessingMLPackage" class="org.docx4j.openpackaging.packages.WordprocessingMLPackage" factory-method="load">
<constructor-arg ref="baseDocument" />
</bean>
So I found a lucky "workaround" for the original problem.
Since this question isn't urgent any more, I'm still interested in the correct solution, especially in a solution which allows injecting the WordprocessingMLPackage in other beans.
Thank you!
Here you need to make use of MethodInvokingFactoryBean as detailed below.
<bean id="beanId"
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetClass" value="org.docx4j.Docx4J" />
<property name="targetMethod" value="load"/>
<property name="arguments">
<list>
<ref bean="inFile" />
</list>
</property>
</bean>
In your code get hold of applicationContext instance and invoke the below LOC
WordprocessingMLPackage ml = (WordprocessingMLPackage) applicationContext.getBean("beanId");
Let know in comments if you face any issues.
As Bond - Java Bond stated this works:
<bean id="inFile" class="java.io.File">
<constructor-arg value="path/to/file/" />
<constructor-arg value="fileName.docx" />
</bean>
<bean id="beanId" class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetClass" value="org.docx4j.Docx4J" />
<property name="targetMethod" value="load"/>
<property name="arguments">
<list>
<ref bean="inFile" />
</list>
</property>
</bean>
You can now use the bean as
WordprocessingMLPackage ml = (WordprocessingMLPackage) applicationContext.getBean("beanId");
or you can inject the bean directly as
<bean id="service" class="app.service.Service">
<property name="wordprocessingMLPackage" ref="beanId" />
</bean>
Thank you!!!
In the applicationContext rules xml file, I have rules defined to validate fileds for web forms. eg. The webFormCanadaConditionalRule will be triggered on the province filed and the rule checks to if the selected value is 5714 for Canada. If it is Canada are other filed will get validated.
here is a working example.
<entry key="province">
<list>
<value>webFormCanadaConditionalRule</value>
</list>
</entry>
<bean id="webFormCanadaConditionalRule"
class="ca.gc.cic.gol.eapp.rules.custom.WebFormConditionalRule">
<property name="preConditionValue" value="5714"/>
<property name="ruleNames" >
<list>
<value>mandatory</value>
</list>
</property>
</bean>
What I am trying to accomplish is to have a precondition value that checks to make sure the selected value is not 5714.
Is there a way I can add a precondition value to bean property where I can use the !=... Here is what I have and this doesn't seem to work.
<bean id="webFormAddressNotCanadaConditionalRule"
class="ca.gc.cic.gol.eapp.rules.custom.WebFormConditionalRule">
<property name="preConditionValue" value="${!=5714}" />
<property name="ruleNames" >
<list>
<value>mandatory</value>
</list>
</property>
</bean>
Thanks a lot.
I have a string property which looks similar to the following example:
<property name="mappingData">
<list>
<bean class="com.company.product.longNamingStandard.migration.extractor.FieldMapping">
<property name="elementName" value="entitlement.user"/>
<property name="mapping" value="DocUsers"/>
</bean>
<bean class="com.company.product.longNamingStandard.migration.extractor.FieldMapping">
<property name="elementName" value="entitlement.contributor"/>
<property name="mapping" value="DocContributors"/>
</bean>
</list>
</property>
The long class name(s) effect readability & also create a refactoring overhead.
Is it possible to alias the class name and use a short name to declare the beans? Or is there an alternate best practice I'm missing?
Probably a bit late for you, but hopefully useful for others:
You can use parent beans to accomplish this.
First declare a parent bean as a template:
<bean id="FieldMapping" class="com.company.product.longNamingStandard.migration.extractor.FieldMapping"/>
Then use it elsewhere, using the parent attribute.
<property name="mappingData">
<list>
<bean parent="FieldMapping">
<property name="elementName" value="entitlement.user"/>
<property name="mapping" value="DocUsers"/>
</bean>
<bean parent="FieldMapping">
<property name="elementName" value="entitlement.contributor"/>
<property name="mapping" value="DocContributors"/>
</bean>
</list>
</property>
Please note my convention here is to use upper case id's here for the parent template beans.
each <bean/> comes with an attribute of name and id to help you reference those beans later in your configuration.
I would suggest using the id for declaring the bean.
your config could look like:
<bean id="fooBean" class="com.example.foo"/>
<bean id="barBean" class="com.example.bar"/>
<list>
<ref>fooBean</ref>
<ref>barBean</ref>
</list>
You may try to represent your mapping in some short form, and then convert it to the list of FieldMappings. For example, mappings from your snippet may be represented as a map.
As a theoretic exercise in Spring 3 you can do this with Spring Expression Language (if FieldMapping has the apropriate constructor):
<util:map id = "m">
<entry name = "entitlement.user" value = "DocUsers" />
<entry name = "entitlement.contributor" value = "DocContributors" />
</util:map>
...
<property name = "mappingData"
value = "#{m.![new com.company.product.longNamingStandard.migration.extractor.FieldMapping(key, value)]}" />
If this expression is too obscure, you may implement a FactoryBean to take a short form of your mapping data (for example, a map, as in this example) and return a configured list of FieldMappings:
<property name = "mappingData">
<bean class = "FieldMappingListFactoryBean">
<property name = "mappings">
<map>
<entry name = "entitlement.user" value = "DocUsers" />
<entry name = "entitlement.contributor" value = "DocContributors" />
</map>
</property>
</bean>
</property>
However, if your field mappings are some kind of reusable DSL, you may try to think about implementing a namespace extension.
I found a way to simulate an effect similar to a "import com.Foo;" in java code. The best option I could find was to use a PropertyPlaceholderConfigurer with local properties defined. Using your example, here's the configuration that you would put at the top of your spring config file to define a "class_FieldMapping" property:
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<description>Define properties equivalent to "import foo;" in java source</description>
<property name="properties">
<props>
<prop key="class_FieldMapping">com.company.product.longNamingStandard.migration.extractor.FieldMapping</prop>
</props>
</property>
</bean>
Then, you can use that property within your beans:
<property name="mappingData">
<list>
<bean class="${class_FieldMapping}">
...
</bean>
<bean class="${class_FieldMapping}">
...
</bean>
</list>
</property>
This has the benefit that use can also use it for things where you actually need the class name, and can't reference an instance of an object:
<util:constant static-field="${class_FieldMapping}.MYSTATICVAR" />
Why not declare those inner beans as separate top-level beans with their own names, and then reference them in the list ?
If I use PropertyPlaceholderConfigurer it leads to several exceptions in debug log. It works, but it seems it doesn't work on the first try.