MATLAB: How to specify a structure field starting with upper case when working with MATLAB Production Server 1.0 (R2012b) Java client library

MATLAB Production Server

The MATLAB code running on my MPS expects a structure with two fields: "field1" and "Field2" as input. It is important that the second field is written with a capital F. I tried to create this structure by implementing the following Java class:
public class MyStruct {
      private String field1;
      public String getField1() {
          return field1;
      }
      public void setField1(String field1) {
          this.field1 = field1;
      }
      private double Field2;
      public double getField2() {
          return Field2;
      }
      public void setField2(double field2) {
          Field2 = field2;
      }
}
But I notice that on the MATLAB side both fields in the stuct start with a lower case f.

Best Answer

When working with Java classes to represent MATLAB structures, it is good to know that the Java Beans Introspector (<http://docs.oracle.com/javase/6/docs/api/java/beans/Introspector.html>) is used to map properties to fields and its default naming conventions are used.
This means that by default its decapitalize method is used:
http://docs.oracle.com/javase/6/docs/api/java/beans/Introspector.html#decapitalize(java.lang.String)
And thus it would not be possible to define a property which will map to a structure field which starts with an upper case.
However this behavior can be overriden by implementing a BeanInfo class with a custom getPropertyDescriptors() method. For example:
import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.beans.SimpleBeanInfo;
public class MyStructBeanInfo extends SimpleBeanInfo {
      @Override
      public PropertyDescriptor[] getPropertyDescriptors() {
          PropertyDescriptor[] props = new  PropertyDescriptor[2];
          try {
              // field1 uses default naming conventions so we do not need to explicitly specify the accessor names.
              props[0] = new PropertyDescriptor("field1",MyStruct.class);
              // Field2 uses a custom naming convention so we do need to explicitly specify the accessor names.
              props[1] = new PropertyDescriptor("Field2",MyStruct.class,"getField2","setField2");
              return props;
          } catch (IntrospectionException e) {
              e.printStackTrace();
          }
          return null;
      }
}
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