Examples of org.teiid.query.processor.xml.EndBlockInstruction

org.teiid.query.processor.xml.EndBlockInstruction

This instruction closes a result set, which closes and removes the TupleSource associated with it. This is needed to explicitly close temporary group result sets once processing moves out of their scope, otherwise they would not get cleaned up. But it can be used for other result sets besides temporary groups.

(This instruction does the same thing that a {@link WhileInstruction WhileInstruction} does when the end of a result set is reached.)

        Program childProgram = new Program();
        whileInst.setBlockProgram(childProgram);


        // when while is done close the resultset(note that the child program will
        // have all the statements. 
        EndBlockInstruction closeInst = new EndBlockInstruction(source);
        currentProgram.addInstruction(closeInst);        


        // push the new child program on to stack so that all the children use this
        // program; this must be at end of this block, as the once we exit here we 
        // are going to loop for children with new program

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Examples of org.teiid.query.processor.xml.EndBlockInstruction

Related Classes of org.teiid.query.processor.xml.EndBlockInstruction