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Java OuterJoinDesc.makeExprNode方法代码示例

本文整理汇总了Java中com.espertech.esper.epl.spec.OuterJoinDesc.makeExprNode方法的典型用法代码示例。如果您正苦于以下问题:Java OuterJoinDesc.makeExprNode方法的具体用法?Java OuterJoinDesc.makeExprNode怎么用?Java OuterJoinDesc.makeExprNode使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在com.espertech.esper.epl.spec.OuterJoinDesc的用法示例。


在下文中一共展示了OuterJoinDesc.makeExprNode方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: buildLookupInstructions

import com.espertech.esper.epl.spec.OuterJoinDesc; //导入方法依赖的package包/类
private static List<LookupInstructionPlan> buildLookupInstructions(
        int rootStreamNum,
        LinkedHashMap<Integer, int[]> substreamsPerStream,
        boolean[] requiredPerStream,
        String[] streamNames,
        QueryGraph queryGraph,
        QueryPlanIndex[] indexSpecs,
        EventType[] typesPerStream,
        OuterJoinDesc[] outerJoinDescList,
        boolean[] isHistorical,
        HistoricalStreamIndexList[] historicalStreamIndexLists,
        ExprEvaluatorContext exprEvaluatorContext,
        TableMetadata[] tablesPerStream,
        EngineImportService engineImportService,
        boolean isFireAndForget) {
    List<LookupInstructionPlan> result = new LinkedList<LookupInstructionPlan>();

    for (int fromStream : substreamsPerStream.keySet()) {
        int[] substreams = substreamsPerStream.get(fromStream);

        // for streams with no substreams we don't need to look up
        if (substreams.length == 0) {
            continue;
        }

        TableLookupPlan[] plans = new TableLookupPlan[substreams.length];
        HistoricalDataPlanNode[] historicalPlans = new HistoricalDataPlanNode[substreams.length];

        for (int i = 0; i < substreams.length; i++) {
            int toStream = substreams[i];

            if (isHistorical[toStream]) {
                // There may not be an outer-join descriptor, use if provided to build the associated expression
                ExprEvaluator outerJoinEval = null;
                if (outerJoinDescList.length > 0) {
                    OuterJoinDesc outerJoinDesc;
                    if (toStream == 0) {
                        outerJoinDesc = outerJoinDescList[0];
                    } else {
                        outerJoinDesc = outerJoinDescList[toStream - 1];
                    }
                    ExprNode outerJoinExpr = outerJoinDesc.makeExprNode(exprEvaluatorContext);
                    outerJoinEval = ExprNodeCompiler.allocateEvaluator(outerJoinExpr.getForge(), engineImportService, NStreamOuterQueryPlanBuilder.class, isFireAndForget, exprEvaluatorContext.getStatementName());
                }

                if (historicalStreamIndexLists[toStream] == null) {
                    historicalStreamIndexLists[toStream] = new HistoricalStreamIndexList(toStream, typesPerStream, queryGraph);
                }
                historicalStreamIndexLists[toStream].addIndex(fromStream);
                historicalPlans[i] = new HistoricalDataPlanNode(toStream, rootStreamNum, fromStream, typesPerStream.length, outerJoinEval);
            } else {
                plans[i] = NStreamQueryPlanBuilder.createLookupPlan(queryGraph, fromStream, toStream, indexSpecs[toStream], typesPerStream, tablesPerStream[toStream]);
            }
        }

        String fromStreamName = streamNames[fromStream];
        LookupInstructionPlan instruction = new LookupInstructionPlan(fromStream, fromStreamName, substreams, plans, historicalPlans, requiredPerStream);
        result.add(instruction);
    }

    return result;
}
 
开发者ID:espertechinc,项目名称:esper,代码行数:63,代码来源:NStreamOuterQueryPlanBuilder.java

示例2: buildLookupInstructions

import com.espertech.esper.epl.spec.OuterJoinDesc; //导入方法依赖的package包/类
private static List<LookupInstructionPlan> buildLookupInstructions(
        int rootStreamNum,
        LinkedHashMap<Integer, int[]> substreamsPerStream,
        boolean[] requiredPerStream,
        String[] streamNames,
        QueryGraph queryGraph,
        QueryPlanIndex[] indexSpecs,
        EventType[] typesPerStream,
        List<OuterJoinDesc> outerJoinDescList,
        boolean[] isHistorical,
        HistoricalStreamIndexList[] historicalStreamIndexLists,
        ExprEvaluatorContext exprEvaluatorContext)
{
    List<LookupInstructionPlan> result = new LinkedList<LookupInstructionPlan>();

    for (int fromStream : substreamsPerStream.keySet())
    {
        int[] substreams = substreamsPerStream.get(fromStream);

        // for streams with no substreams we don't need to look up
        if (substreams.length == 0)
        {
            continue;
        }

        TableLookupPlan plans[] = new TableLookupPlan[substreams.length];
        HistoricalDataPlanNode historicalPlans[] = new HistoricalDataPlanNode[substreams.length];

        for (int i = 0; i < substreams.length; i++)
        {
            int toStream = substreams[i];

            if (isHistorical[toStream])
            {
                // There may not be an outer-join descriptor, use if provided to build the associated expression
                ExprNode outerJoinExpr = null;
                if (!outerJoinDescList.isEmpty()) {
                    OuterJoinDesc outerJoinDesc;
                    if (toStream == 0)
                    {
                        outerJoinDesc = outerJoinDescList.get(0);
                    }
                    else
                    {
                        outerJoinDesc = outerJoinDescList.get(toStream - 1);
                    }
                    outerJoinExpr = outerJoinDesc.makeExprNode(exprEvaluatorContext);
                }

                if (historicalStreamIndexLists[toStream] == null)
                {
                    historicalStreamIndexLists[toStream] = new HistoricalStreamIndexList(toStream, typesPerStream, queryGraph);
                }
                historicalStreamIndexLists[toStream].addIndex(fromStream);
                historicalPlans[i] = new HistoricalDataPlanNode(toStream, rootStreamNum, fromStream, typesPerStream.length, outerJoinExpr);
            }
            else
            {
                plans[i] = NStreamQueryPlanBuilder.createLookupPlan(queryGraph, fromStream, toStream, indexSpecs[toStream], typesPerStream);
            }
        }

        String fromStreamName = streamNames[fromStream];
        LookupInstructionPlan instruction = new LookupInstructionPlan(fromStream, fromStreamName, substreams, plans, historicalPlans, requiredPerStream);
        result.add(instruction);
    }

    return result;
}
 
开发者ID:mobile-event-processing,项目名称:Asper,代码行数:70,代码来源:NStreamOuterQueryPlanBuilder.java


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