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.

    }


    private void leaveOr(Tree node)
    {
        log.debug(".leaveOr");
        EvalFactoryNode orNode = patternNodeFactory.makeOrNode();
        addEvalNodeExpression(orNode, node);
    }

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    }


    private void leavePatternNot(Tree node)
    {
        log.debug(".leavePatternNot");
        EvalFactoryNode notNode = this.patternNodeFactory.makeNotNode();
        addEvalNodeExpression(notNode, node);
    }

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            objectName = GuardEnum.WHILE_GUARD.getName();
            obsParameters = ASTExprHelper.getExprNodes(node, 1, astExprNodeMap);
        }


        PatternGuardSpec guardSpec = new PatternGuardSpec(objectNamespace, objectName, obsParameters);
        EvalFactoryNode guardNode = patternNodeFactory.makeGuardNode(guardSpec);
        addEvalNodeExpression(guardNode, node);
    }

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        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 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 = servicesContext.getPatternNodeFactory().makeFilterNode(filter.getFilterSpecRaw(), filter.getOptionalFilterAsName(), 0);
            ContextDetailConditionPattern pattern = new ContextDetailConditionPattern(factoryNode, true, false);
            Pair<MatchEventSpec, Set<String>> matches = validatePatternContextConditionPattern(statementContext, pattern, eventTypesReferenced, priorMatches, priorAllTags);
            return new ContextDetailMatchPair(pattern, matches.getFirst(), matches.getSecond());
        }
        else if (endpoint instanceof ContextDetailConditionImmediate) {

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        if (evalNode == null) {
            throw ASTWalkException.from("Invalid null expression node for '" + ASTUtil.printNode(node) + "'");
        }
        for (int i = 0; i < node.getChildCount(); i++) {
            Tree childNode = node.getChild(i);
            EvalFactoryNode childEvalNode = patternGetRemoveTopNode(childNode, astPatternNodeMap);
            if (childEvalNode != null) {
                evalNode.addChildNode(childEvalNode);
            }
        }
        astPatternNodeMap.put(node, evalNode);

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        }
        astPatternNodeMap.put(node, evalNode);
    }


    public static EvalFactoryNode patternGetRemoveTopNode(Tree node, Map<Tree, EvalFactoryNode> astPatternNodeMap) {
        EvalFactoryNode pattern = astPatternNodeMap.get(node);
        if (pattern != null) {
            astPatternNodeMap.remove(node);
            return pattern;
        }
        for (int i = 0; i < node.getChildCount(); i++) {

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        String objectNamespace = ctx.ns.getText();
        String objectName = ctx.a != null ? ctx.a.getText() : ctx.nm.getText();
        List<ExprNode> obsParameters = ASTExprHelper.exprCollectSubNodes(ctx, 2, astExprNodeMap);


        PatternObserverSpec observerSpec = new PatternObserverSpec(objectNamespace, objectName, obsParameters);
        EvalFactoryNode observerNode = this.patternNodeFactory.makeObserverNode(observerSpec);
        ASTExprHelper.patternCollectAddSubnodesAddParentNode(observerNode, ctx, astPatternNodeMap);
    }

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com.espertech.esper.core.start.EPStatementStartMethodCreateContext

com.espertech.esper.epl.parse.ASTContextHelper

com.espertech.esper.epl.parse.ASTExprHelper

com.espertech.esper.epl.parse.EPLTreeWalker

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