CODEWITHSUNDEEP
javaxml
constantlearner
constantlearner

Reputation: 5247

How can I compare 2 xml files for changed nodes?

I have 2 xml files a.xml and b.xml, b.xml is modified version of a.xml where some node values have been changed. Now I want to make a check in my code only particular node values can be changed not all the nodes. How can I make this check in java? I am getting this xml from user and he is allowed to change only particular nodes if he changes other nodes I should not allow .Below are xml You can see

<xt:path>HelloWorld/BusinessServices/Mytest</xt:path> has changed in both this is valid case where as he has also changed

<xt:value xsi:type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">40</xt:value> from 30 to 40 which is not valid.

a.xml

<?xml version="1.0" encoding="UTF-8"?>
<cus:Customizations xmlns:cus="http://www.bea.com/wli/config/customizations" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xt="http://www.bea.com/wli/config/xmltypes">
  <cus:customization xsi:type="cus:EnvValueCustomizationType">
    <cus:description/>
    <cus:envValueAssignments>
      <xt:envValueType>Service URI Weight</xt:envValueType>
      <xt:location>0</xt:location>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:owner>
      <xt:value xsi:type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">0</xt:value>
    </cus:envValueAssignments>
    <cus:envValueAssignments>
      <xt:envValueType>Service URI</xt:envValueType>
      <xt:location>0</xt:location>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:owner>
      <xt:value xsi:type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">jejb:oracle:test</xt:value>
    </cus:envValueAssignments>
    <cus:envValueAssignments>
      <xt:envValueType>Service URI Table</xt:envValueType>
      <xt:location xsi:nil="true"/>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:owner>
      <xt:value>
        <tableElement xmlns="http://www.bea.com/wli/sb/transports">
          <URI>jejb:oracle:test</URI>
          <weight>0</weight>
        </tableElement>
      </xt:value>
    </cus:envValueAssignments>
    <cus:envValueAssignments>
      <xt:envValueType>Service Retry Count</xt:envValueType>
      <xt:location xsi:nil="true"/>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:owner>
      <xt:value xsi:type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">0</xt:value>
    </cus:envValueAssignments>
    <cus:envValueAssignments>
      <xt:envValueType>Service Retry Iteration Interval</xt:envValueType>
      <xt:location xsi:nil="true"/>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:owner>
      <xt:value xsi:type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">30</xt:value>
    </cus:envValueAssignments>
  </cus:customization>
  <cus:customization xsi:type="cus:FindAndReplaceCustomizationType">
    <cus:description/>
    <cus:query>
      <xt:resourceTypes>BusinessService</xt:resourceTypes>
      <xt:envValueTypes>Service Retry Iteration Interval</xt:envValueTypes>
      <xt:envValueTypes>Service URI Weight</xt:envValueTypes>
      <xt:envValueTypes>Service Retry Count</xt:envValueTypes>
      <xt:envValueTypes>Service URI</xt:envValueTypes>
      <xt:refsToSearch xsi:type="xt:ResourceRefType">
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:refsToSearch>
      <xt:includeOnlyModifiedResources>false</xt:includeOnlyModifiedResources>
      <xt:searchString>Search String</xt:searchString>
      <xt:isCompleteMatch>false</xt:isCompleteMatch>
    </cus:query>
    <cus:replacement>Replacement String</cus:replacement>
  </cus:customization>
  <cus:customization xsi:type="cus:ReferenceCustomizationType">
    <cus:description/>
    <cus:refsToBeConsidered xsi:type="xt:ResourceRefType">
      <xt:type>BusinessService</xt:type>
      <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
    </cus:refsToBeConsidered>
    <cus:externalReferenceMap>
      <xt:oldRef>
        <xt:type>ForeignJNDIProvider</xt:type>
        <xt:path>System/JNDI Providers/oracle</xt:path>
      </xt:oldRef>
      <xt:newRef>
        <xt:type>ForeignJNDIProvider</xt:type>
        <xt:path>System/JNDI Providers/oracle</xt:path>
      </xt:newRef>
    </cus:externalReferenceMap>
    <cus:externalReferenceMap>
      <xt:oldRef>
        <xt:type>Archive</xt:type>
        <xt:path>dev/HelloOsbEjbClient</xt:path>
      </xt:oldRef>
      <xt:newRef>
        <xt:type>Archive</xt:type>
        <xt:path>dev/HelloOsbEjbClient</xt:path>
      </xt:newRef>
    </cus:externalReferenceMap>
  </cus:customization>
</cus:Customizations>

b.xml

<?xml version="1.0" encoding="UTF-8"?>
<cus:Customizations xmlns:cus="http://www.bea.com/wli/config/customizations" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xt="http://www.bea.com/wli/config/xmltypes">
  <cus:customization xsi:type="cus:EnvValueCustomizationType">
    <cus:description/>
    <cus:envValueAssignments>
      <xt:envValueType>Service URI Weight</xt:envValueType>
      <xt:location>0</xt:location>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:owner>
      <xt:value xsi:type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">0</xt:value>
    </cus:envValueAssignments>
    <cus:envValueAssignments>
      <xt:envValueType>Service URI</xt:envValueType>
      <xt:location>0</xt:location>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:owner>
      <xt:value xsi:type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">jejb:oracle:test</xt:value>
    </cus:envValueAssignments>
    <cus:envValueAssignments>
      <xt:envValueType>Service URI Table</xt:envValueType>
      <xt:location xsi:nil="true"/>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:owner>
      <xt:value>
        <tableElement xmlns="http://www.bea.com/wli/sb/transports">
          <URI>jejb:oracle:test</URI>
          <weight>0</weight>
        </tableElement>
      </xt:value>
    </cus:envValueAssignments>
    <cus:envValueAssignments>
      <xt:envValueType>Service Retry Count</xt:envValueType>
      <xt:location xsi:nil="true"/>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
      </xt:owner>
      <xt:value xsi:type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">0</xt:value>
    </cus:envValueAssignments>
    <cus:envValueAssignments>
      <xt:envValueType>Service Retry Iteration Interval</xt:envValueType>
      <xt:location xsi:nil="true"/>
      <xt:owner>
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/Mytest</xt:path>
      </xt:owner>
      <xt:value xsi:type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">40</xt:value>
    </cus:envValueAssignments>
  </cus:customization>
  <cus:customization xsi:type="cus:FindAndReplaceCustomizationType">
    <cus:description/>
    <cus:query>
      <xt:resourceTypes>BusinessService</xt:resourceTypes>
      <xt:envValueTypes>Service Retry Iteration Interval</xt:envValueTypes>
      <xt:envValueTypes>Service URI Weight</xt:envValueTypes>
      <xt:envValueTypes>Service Retry Count</xt:envValueTypes>
      <xt:envValueTypes>Service URI</xt:envValueTypes>
      <xt:refsToSearch xsi:type="xt:ResourceRefType">
        <xt:type>BusinessService</xt:type>
        <xt:path>HelloWorld/BusinessServices/MyTest</xt:path>
      </xt:refsToSearch>
      <xt:includeOnlyModifiedResources>false</xt:includeOnlyModifiedResources>
      <xt:searchString>Search String</xt:searchString>
      <xt:isCompleteMatch>false</xt:isCompleteMatch>
    </cus:query>
    <cus:replacement>Replacement String</cus:replacement>
  </cus:customization>
  <cus:customization xsi:type="cus:ReferenceCustomizationType">
    <cus:description/>
    <cus:refsToBeConsidered xsi:type="xt:ResourceRefType">
      <xt:type>BusinessService</xt:type>
      <xt:path>HelloWorld/BusinessServices/Test123</xt:path>
    </cus:refsToBeConsidered>
    <cus:externalReferenceMap>
      <xt:oldRef>
        <xt:type>ForeignJNDIProvider</xt:type>
        <xt:path>System/JNDI Providers/oracle</xt:path>
      </xt:oldRef>
      <xt:newRef>
        <xt:type>ForeignJNDIProvider</xt:type>
        <xt:path>System/JNDI Providers/oracle</xt:path>
      </xt:newRef>
    </cus:externalReferenceMap>
    <cus:externalReferenceMap>
      <xt:oldRef>
        <xt:type>Archive</xt:type>
        <xt:path>dev/HelloOsbEjbClient</xt:path>
      </xt:oldRef>
      <xt:newRef>
        <xt:type>Archive</xt:type>
        <xt:path>dev/HelloOsbEjbClient</xt:path>
      </xt:newRef>
    </cus:externalReferenceMap>
  </cus:customization>
</cus:Customizations>

Upvotes: 1

Views: 575

Answers (2)

Alejandro Colorado
Alejandro Colorado

Reputation: 6094

Try XMLUnit for Java.

XMLUnit for Java provides two JUnit extension classes, XMLAssert and XMLTestCase, and a set of supporting classes (e.g. Diff, DetailedDiff,Transform,SimpleXpathEngine,Validator,NodeTest) that allow assertions to be made about:

  • The differences between two pieces of XML

  • The outcome of transforming a piece of XML using XSLT

  • The evaluation of an XPath expression on a piece of XML

  • The validity of a piece of XML

  • Individual nodes in a piece of XML that are exposed by DOM Traversal

    XMLUnit for Java can also treat HTML content (even badly-formed HTML) as valid XML to allow these assertions to be made about the content of web pages too.

Another DocumentBuilder solution can be found here.

Upvotes: 2

shadow
shadow

Reputation: 131

Hmm may you read both files, with the DocumentBuilder. Store the nodes in for example some list that you can compare after reading them:

DocumentBuilderFactory fac = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = fac.newDocumentBuilder();
Document doc = builder.parse(new File("a.xml");

After that you can get all the nodes out of your document (stored in a NodeList)

NodeList list = doc.getElementsbyName("someelement"); //just for an example

Hope that I could help you a little

Upvotes: 2

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