Examples of com.espertech.esper.pattern.EvalFactoryNode

com.espertech.esper.pattern.EvalFactoryNode
Superclass of all nodes in an evaluation tree representing an event pattern expression. Follows the Composite pattern. Child nodes do not carry references to parent nodes, the tree is unidirectional.

        String objectNamespace = node.getChild(0).getText();
        String objectName = node.getChild(1).getText();
        List<ExprNode> obsParameters = ASTExprHelper.getExprNodes(node, 2, astExprNodeMap);


        PatternObserverSpec observerSpec = new PatternObserverSpec(objectNamespace, objectName, obsParameters);
        EvalFactoryNode observerNode = this.patternNodeFactory.makeObserverNode(observerSpec);
        addEvalNodeExpression(observerNode, node);
    }

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        if ((node.getChildCount() == 2) && (hasRange) && (!tightlyBound))
        {
            throw new ASTWalkException("Variable bounds repeat operator requires an until-expression");
        }


        EvalFactoryNode fbNode = this.patternNodeFactory.makeMatchUntilNode(low, high);
        addEvalNodeExpression(fbNode, node);
    }

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                }
                return new ContextDetailMatchPair(filter, matchEventSpec, allTags);
            }


            // compile as pattern if there are prior matches to consider, since this is a type of followed-by relationship
            EvalFactoryNode factoryNode = services.getPatternNodeFactory().makeFilterNode(filter.getFilterSpecRaw(), filter.getOptionalFilterAsName(), 0);
            ContextDetailConditionPattern pattern = new ContextDetailConditionPattern(factoryNode, true);
            Pair<MatchEventSpec, Set<String>> matches = validatePatternContextConditionPattern(pattern, eventTypesReferenced, priorMatches, priorAllTags);
            return new ContextDetailMatchPair(pattern, matches.getFirst(), matches.getSecond());
        }
        else {

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        return StatementSpecMapper.unmap(node);
    }


    public PatternExpr compilePatternToSODA(String expression) throws EPException
    {
        EvalFactoryNode node = compilePatternToNode(expression);
        return StatementSpecMapper.unmap(node);
    }

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        return StatementSpecMapper.unmap(node);
    }


    public PatternExpr compilePatternToSODA(String expression) throws EPException
    {
        EvalFactoryNode node = compilePatternToNode(expression);
        return StatementSpecMapper.unmap(node);
    }

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                }
                return new ContextDetailMatchPair(filter, matchEventSpec);
            }


            // compile as pattern if there are prior matches to consider, since this is a type of followed-by relationship
            EvalFactoryNode factoryNode = services.getPatternNodeFactory().makeFilterNode(filter.getFilterSpecRaw(), filter.getOptionalFilterAsName(), 0);
            ContextDetailConditionPattern pattern = new ContextDetailConditionPattern(factoryNode, true);
            MatchEventSpec matches = validatePatternContextConditionPattern(pattern, eventTypesReferenced, priorMatches);
            return new ContextDetailMatchPair(pattern, matches);
        }
        else {

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        if (parent.getType() == EsperEPL2Ast.CRONTAB_LIMIT_EXPR_PARAM) {
            List<ExprNode> crontab = ASTExprHelper.getRemoveAllChildExpr(parent, astExprNodeMap);
            return new ContextDetailConditionCrontab(crontab);
        }
        else if (parent.getType() == EsperEPL2Ast.CREATE_CTX_PATTERN) {
            EvalFactoryNode evalNode = astPatternNodeMap.remove(parent.getChild(0).getChild(0));
            boolean inclusive = false;
            if (parent.getChildCount() > 1) {
                String ident = parent.getChild(1).getText();
                if (ident != null && !ident.toLowerCase().equals("inclusive")) {
                    throw new ASTWalkException("Expected 'inclusive' keyword after '@', found '" + ident + "' instead");

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        }


        // For each AST child node of this AST node that generated an EvalNode add the EvalNode as a child
        if (!astPatternNodeMap.isEmpty())
        {
            EvalFactoryNode thisPatternNode = astPatternNodeMap.get(node);
            for (int i = 0; i < node.getChildCount(); i++)
            {
                Tree childNode = node.getChild(i);
                EvalFactoryNode childEvalNode = astPatternNodeMap.get(childNode);
                if (childEvalNode != null)
                {
                    thisPatternNode.addChildNode(childEvalNode);
                    astPatternNodeMap.remove(childNode);
                }

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            if ((astPatternNodeMap.size() > 1) || ((astPatternNodeMap.isEmpty())))
            {
                throw new ASTWalkException("Unexpected AST tree contains zero or more then 1 child elements for root");
            }
            // Get expression node sub-tree from the AST nodes placed so far
            EvalFactoryNode evalNode = astPatternNodeMap.values().iterator().next();
            streamSpec = new PatternStreamSpecRaw(evalNode, evalNodeExpressions, viewSpecs, streamAsName, new StreamSpecOptions());
            if (evalNodeExpressions != null) {
                evalNodeExpressions = new HashMap<EvalFactoryNode, String>();
            }
            astPatternNodeMap.clear();

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        {
            throw new ASTWalkException("Unexpected AST tree contains zero or more then 1 child elements for root");
        }


        // Get expression node sub-tree from the AST nodes placed so far
        EvalFactoryNode evalNode = astPatternNodeMap.values().iterator().next();


        PatternStreamSpecRaw streamSpec = new PatternStreamSpecRaw(evalNode, evalNodeExpressions, new LinkedList<ViewSpec>(), null, new StreamSpecOptions());
        if (evalNodeExpressions != null) {
            evalNodeExpressions = new HashMap<EvalFactoryNode, String>();
        }

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com.espertech.esper.core.service.EPAdministratorImpl

com.espertech.esper.core.start.EPStatementStartMethodCreateContext

com.espertech.esper.epl.parse.ASTContextHelper

com.espertech.esper.epl.parse.ASTExprHelper

com.espertech.esper.epl.parse.EPLTreeWalker

com.espertech.esper.epl.parse.EPLTreeWalkerListener

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