Tag Archives: java

Salesforce JAXB: Using wsimport to generate client artifacts

The Salesforce developer documentation provides JAVA examples based on WSC. WSC is a nice tool that makes interfacing to SFDC simple and easy, providing an EnterpriseConnection hiding all the details in calling SFDC. But, WSC might not be for you: … Continue reading

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Salesforce wsc: upsert null fields

  The salesforce upsert() callĀ  is brilliant for interfacing legacy systems with Salesforce, especially if the data you are going to replicate into already contains some sort of unique identification. It will create records that does not exist, and update … Continue reading

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Salesforce wsc: ConnectionException should have been Fault

This is the first article where I discuss details or issues using wsc (JAVA) on an Oracle WebLogic platform to integrate Customer Legacy systems with Salesforce CRM. In some environments (specifically the WLS 10.3.5 used as production environment at my … Continue reading

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usl4j – Ultra Simple Logging for JAVA

Back in the late 90’ties when I started programming JAVA there were no standard way of logging in JAVA programs. One usually just used System.out.println(), System.err.println() and Exception.printStacktrace(). Often applications would build homemade logging frameworks that would also log information … Continue reading

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Squareroot (sqrt) with BigDecimal

Recently I was refactoring some code from using double to using BigDecimal and suddenly needed a square root method. I remembered years ago I was taught a simple “successive approximation” method; believe it was grammar school. I searched the net … Continue reading

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Implementing a simple database semaphore

In this article I will describe a simple technique that enables you to implement an “exclusive lock” in a distributed, even clustered, environment. The technique works with all major databases, and should work with any database that has a reasonable … Continue reading

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Financial (monetary) computations using floating point arithmetic [in JAVA]

In this article, I will discuss some of the issues in doing financial calculations in JAVA. The issues are not related to JAVA only, but to any calculation done in a “computer language” using binary floating point arithmetic, including calculations … Continue reading

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Trusting any “secure” host

My main concern is developing server-side JAVA-applications: J[2]EE applications. When working with hobby-projects, I’m often faced with situations where I need to call other “third-party” applications over HTTP, in order to obtain some information important to me in specific situations. … Continue reading

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Writing JDBC code: resource cleanup and exception handling

No matter how nice an ORM tool used in the project, CMP, Hibernate or JPA, You will eventually have to start writing “low-level” JDBC code. Most often for performance reasons, sometimes just to utilize some database-vendor-specific feature. Or calling stored … Continue reading

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The “changing the database” experience

I have been involved in Enterprise JAVA projects since 1998. Almost all projects have had an RDBMS “behind” it, mostly Oracle and DB2. All the projects have been some custom defined application often based on existing infrastructure, and the database … Continue reading

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