Examples of net.sf.saxon.query.StaticQueryContext.declareGlobalVariable()

net.sf.saxon.query.StaticQueryContext.declareGlobalVariable()

Declare a global variable. This has the same effect as including a global variable declaration in the Query Prolog of the main query module. A static error occurs when compiling the query if the query prolog contains a declaration of the same variable. @param qName the qualified name of the variable @param type the declared type of the variable @param value the initial value of the variable. May be null if the variable is external. @param external true if the variable is external, that is, if its value may be set at run-time. @throws NullPointerException if the value is null, unless the variable is external @throws XPathException if the value of the variable is not consistent with its type. @since 9.1

        for (DerivedColumn derivedColumn : passing) {
          if (derivedColumn.getAlias() == null) {
            continue;
          }
          try {
        context.declareGlobalVariable(StructuredQName.fromClarkName(derivedColumn.getAlias()), SequenceType.ANY_SEQUENCE, null, true);
      } catch (XPathException e) {
        //this is always expected to work
        throw new TeiidRuntimeException(e, "Could not define global variable"); //$NON-NLS-1$ 
      }
    }

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