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JAN082021-IIB ExtJavaCall_DbNode_MQReplyPubSub
--Creating Procedure For Calling External_Java_File(REGSTR.java),method RECORDS
CREATE PROCEDURE EXJAVACALL(IN PRO1C INTEGER,IN PRO2C INTEGER,IN VNAME CHARACTER) RETURNS CHARACTER LANGUAGE JAVA
EXTERNAL NAME "com.mss.REGSTR.RECORDS";
IIB 10 uses IBM java which includes oracle java's 1.7 features. IBM Integration Bus v10 ships with Java 8 in IIB 10.0.0.11 and later fix packs on all supported distributed platforms except Solaris and HP. However, the IIB Toolkit is unable to compile Java source code containing Java 8 language constructs such as Functional Interfaces, default and static methods in Interfaces and Lambda Expressions. If you try to deploy a bar file which contains or references Java 8 compiled class files to an IIB node running 10.0.0.10 or earlier then you may see one of the following errors: JavaCompute node with an onInitialize method BIP4157E: The user-defined node 'Java Compute' could not be deployed. Details: java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version class=Java18Test, offset=6.
MbJavaComputeNode is the superclass of all the classes used in JCN.
JAN182021-IIB JCN_MessSet 5:08 The Filtering message class in JCN wizard is not aimed for transformation. It can't construct the new message. It is used to check the data without changing it like a filter node, then apply filtering rules. JCN template for Java Architecture for XML Binding (JAXB) class relates to marshalling and unmarshalling. Java classes are generated from an XSD. You can create new XML data using the constructor's classes and methods. You can also read newly created XML data.
When you have finished the template wizard you will see extends MbJavaComputeNode. This superclass is an abstract class. It has abstract methods and concrete methods. Abstract methods that are already implemented can be called in our JCN. With concrete methods are not implemented so we need to implement the declaration. The evaluate method is a concrete method that we need to implement. The evaluate method is akin to the Main method in ESQL.
public void evaluate(MbMessageAssembly inAssembly) throws MbException {
// evaluate is akin to the CREATE FUNCTION Main() RETURNS BOOLEAN
// MbMessage root1 = inAssembly.getMessage(); // access Input tree
MbElement root = inAssembly.getMessage().getRootElement(); // InputRoot
MbElement Body = inAssembly.getMessage().getRootElement().getLastChild().getLastChild(); // Data under XMLNSkC
String jlKt="";
// Outputtree pointer
MbElement xmlnsc = outAssembly.getMessage().getRootElement().getLastChild();
// INPUT
MbElement empDetails=root.getLastChild().getLastChild().getFirstChild();
// MbElement empDetails=root.getLastChild()
String SName=empDetails.getFirstChild().getValueAsString();
String SmpID=empDetails.getFirstChild().getNextSibling().getValueAsString();
String SmpAge=empDetails.getFirstChild().getNextSibling().getNextSibling().getValueAsString();
The MbMessageAssembly is capable of holding the entire logical tree. The logical tree consists of 4 trees:
- message tree (properties, MQMD, XMLNSC)
- LocalEnvironment
- Environment
- ExceptionList
In google drive JAN272021-IIBFixJCNMulti you can access MSET using XPath.
MbElement root = inAssembly.getMessage().getRootElement().getLastChild().getLastChild();MbElement emp1[]= root.getAllElementsByPath("\*");
MbElement Root=outAssembly.getMessage().getRootElement().getFirstChild();
Root.getFirstElementByPath("./MessageSet").setValue("JCN_CSV_MessageSet");
Root.getFirstElementByPath("./MessageType").setValue("{}:SDET");
Root.getFirstElementByPath("./MessageFormat").setValue("Text_CSV");