Examples of org.teiid.query.processor.proc.IfInstruction

org.teiid.query.processor.proc.IfInstruction

This instruction an holds an if block and an else block and a criteria that determines which block will be executed. These blocks are {@link Program} objects that could containnested if-else block. Therefore, this ProgramInstruction implements an arbitrarily deep if-else if-....else block.

During processing, the Criteria is evaluated and if it evaluates to true, the "if" block is executed else the "else" block if there is one is executed. These programs are placed on the {@link ProgramEnvironment#getProgramStack stack}.

        Program ifProgram = planBlock(parentProcCommand, ifStmt.getIfBlock(), metadata, debug, idGenerator, capFinder, analysisRecord, context);
        Program elseProgram = null;
        if(ifStmt.hasElseBlock()) {
          elseProgram = planBlock(parentProcCommand, ifStmt.getElseBlock(), metadata, debug, idGenerator, capFinder, analysisRecord, context);
        }
        instruction = new IfInstruction(ifStmt.getCondition(), ifProgram, elseProgram);
        if(debug) {
          analysisRecord.println("\tIF STATEMENT:\n" + statement); //$NON-NLS-1$
        }
        break;
            }

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Examples of org.teiid.query.processor.proc.IfInstruction

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