Examples of com.espertech.esper.epl.agg.AggregationSupport

com.espertech.esper.epl.agg.AggregationSupport
Base class for use with plug-in aggregation functions.

            }


            // first try the configured aggregation (AggregationSupport, deprecated)
            try
            {
                AggregationSupport aggregation = mapContext.getEngineImportService().resolveAggregation(node.getFunctionName());
                return new ExprPlugInAggFunctionNode(node.isDistinct(), aggregation, node.getFunctionName());
            }
            catch (Exception e)
            {
                // then try the builtin aggregation

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        }


        // There is no class name, try an aggregation function (AggregationSupport version, deprecated)
        try
        {
            AggregationSupport aggregation = validationContext.getMethodResolutionService().resolveAggregation(parse.getMethodName());
            ExprNode result = new ExprPlugInAggFunctionNode(false, aggregation, parse.getMethodName());
            result.addChildNode(new ExprConstantNodeImpl(parse.getArgString()));


            // Validate
            try

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        }


        // try plug-in aggregation function
        try
        {
            AggregationSupport aggregation = engineImportService.resolveAggregation(childNodeText);


            astExprNodeMap.put(node, new ExprPlugInAggFunctionNode(isDistinct, aggregation, childNodeText));
            return;
        }
        catch (EngineImportUndefinedException e)

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            PlugInProjectionExpression node = (PlugInProjectionExpression) expr;


            // first try the configured aggregation
            try
            {
                AggregationSupport aggregation = mapContext.getEngineImportService().resolveAggregation(node.getFunctionName());
                return new ExprPlugInAggFunctionNode(node.isDistinct(), aggregation, node.getFunctionName());
            }
            catch (Exception e)
            {
                // then try the builtin aggregation

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        }


        // There is no class name, try an aggregation function
        try
        {
            AggregationSupport aggregation = validationContext.getMethodResolutionService().resolveAggregation(parse.getMethodName());
            ExprNode result = new ExprPlugInAggFunctionNode(false, aggregation, parse.getMethodName());
            result.addChildNode(new ExprConstantNodeImpl(parse.getArgString()));


            // Validate
            try

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Related Classes of com.espertech.esper.epl.agg.AggregationSupport

com.espertech.esper.epl.expression.ExprNodeUtil

com.espertech.esper.epl.expression.ExprNodeUtility

com.espertech.esper.epl.parse.EPLTreeWalker

com.espertech.esper.epl.spec.StatementSpecMapper

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