Examples with IsNull org.wso2.siddhi.query.api.expression.condition.IsNull used on opensource projects

Example 1 with IsNull

use of org.wso2.siddhi.query.api.expression.condition.IsNull in project siddhi by wso2.

the class CollectionExpressionParser method parseInternalCollectionExpression.

/**
 * Parse the given expression and create the appropriate Executor by recursively traversing the expression.
 *
 * @param expression             Expression to be parsed
 * @param matchingMetaInfoHolder matchingMetaInfoHolder
 * @param indexedEventHolder     indexed event holder
 * @return ExpressionExecutor
 */
private static CollectionExpression parseInternalCollectionExpression(Expression expression, MatchingMetaInfoHolder matchingMetaInfoHolder, IndexedEventHolder indexedEventHolder) {
    if (expression instanceof And) {
        CollectionExpression leftCollectionExpression = parseInternalCollectionExpression(((And) expression).getLeftExpression(), matchingMetaInfoHolder, indexedEventHolder);
        CollectionExpression rightCollectionExpression = parseInternalCollectionExpression(((And) expression).getRightExpression(), matchingMetaInfoHolder, indexedEventHolder);
        if (leftCollectionExpression.getCollectionScope() == NON && rightCollectionExpression.getCollectionScope() == NON) {
            return new BasicCollectionExpression(expression, NON);
        } else if ((leftCollectionExpression.getCollectionScope() == PRIMARY_KEY_ATTRIBUTE || leftCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_ATTRIBUTE || leftCollectionExpression.getCollectionScope() == PRIMARY_KEY_RESULT_SET || leftCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_RESULT_SET) && (rightCollectionExpression.getCollectionScope() == PRIMARY_KEY_ATTRIBUTE || rightCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_ATTRIBUTE || rightCollectionExpression.getCollectionScope() == PRIMARY_KEY_RESULT_SET || rightCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_RESULT_SET)) {
            Set<String> primaryKeys = new HashSet<>();
            primaryKeys.addAll(leftCollectionExpression.getMultiPrimaryKeys());
            primaryKeys.addAll(rightCollectionExpression.getMultiPrimaryKeys());
            if (indexedEventHolder.getPrimaryKeyReferenceHolders() != null && primaryKeys.size() == indexedEventHolder.getPrimaryKeyReferenceHolders().length) {
                return new AndMultiPrimaryKeyCollectionExpression(expression, PRIMARY_KEY_RESULT_SET, leftCollectionExpression, rightCollectionExpression);
            } else {
                return new AndCollectionExpression(expression, PARTIAL_PRIMARY_KEY_RESULT_SET, leftCollectionExpression, rightCollectionExpression);
            }
        // TODO support query rewriting to group all PARTIAL_PRIMARY_KEY_RESULT_SETs together such that it can
        // build AndMultiPrimaryKeyCollectionExpression.
        } else if ((leftCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_ATTRIBUTE || leftCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_RESULT_SET || leftCollectionExpression.getCollectionScope() == NON || leftCollectionExpression.getCollectionScope() == EXHAUSTIVE) && (rightCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_ATTRIBUTE || rightCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_RESULT_SET || rightCollectionExpression.getCollectionScope() == NON || rightCollectionExpression.getCollectionScope() == EXHAUSTIVE)) {
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        } else {
            return new AndCollectionExpression(expression, OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET, leftCollectionExpression, rightCollectionExpression);
        }
    } else if (expression instanceof Or) {
        CollectionExpression leftCollectionExpression = parseInternalCollectionExpression(((Or) expression).getLeftExpression(), matchingMetaInfoHolder, indexedEventHolder);
        CollectionExpression rightCollectionExpression = parseInternalCollectionExpression(((Or) expression).getRightExpression(), matchingMetaInfoHolder, indexedEventHolder);
        if (leftCollectionExpression.getCollectionScope() == NON && rightCollectionExpression.getCollectionScope() == NON) {
            return new BasicCollectionExpression(expression, NON);
        } else if (leftCollectionExpression.getCollectionScope() == EXHAUSTIVE || leftCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_ATTRIBUTE || leftCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_RESULT_SET || rightCollectionExpression.getCollectionScope() == EXHAUSTIVE || rightCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_ATTRIBUTE || rightCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_RESULT_SET) {
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        } else {
            return new OrCollectionExpression(expression, OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET, leftCollectionExpression, rightCollectionExpression);
        }
    } else if (expression instanceof Not) {
        CollectionExpression notCollectionExpression = parseInternalCollectionExpression(((Not) expression).getExpression(), matchingMetaInfoHolder, indexedEventHolder);
        switch(notCollectionExpression.getCollectionScope()) {
            case NON:
                return new BasicCollectionExpression(expression, NON);
            case PRIMARY_KEY_ATTRIBUTE:
                return new NotCollectionExpression(expression, PRIMARY_KEY_RESULT_SET, notCollectionExpression);
            case INDEXED_ATTRIBUTE:
                return new NotCollectionExpression(expression, INDEXED_RESULT_SET, notCollectionExpression);
            case PRIMARY_KEY_RESULT_SET:
            case INDEXED_RESULT_SET:
            case OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET:
                return new NotCollectionExpression(expression, OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET, notCollectionExpression);
            case PARTIAL_PRIMARY_KEY_ATTRIBUTE:
            case PARTIAL_PRIMARY_KEY_RESULT_SET:
            case EXHAUSTIVE:
                return new BasicCollectionExpression(expression, EXHAUSTIVE);
        }
    } else if (expression instanceof Compare) {
        CollectionExpression leftCollectionExpression = parseInternalCollectionExpression(((Compare) expression).getLeftExpression(), matchingMetaInfoHolder, indexedEventHolder);
        CollectionExpression rightCollectionExpression = parseInternalCollectionExpression(((Compare) expression).getRightExpression(), matchingMetaInfoHolder, indexedEventHolder);
        if (leftCollectionExpression.getCollectionScope() == NON && rightCollectionExpression.getCollectionScope() == NON) {
            // comparing two stream attributes with O(1) time complexity
            return new BasicCollectionExpression(expression, NON);
        } else if ((leftCollectionExpression.getCollectionScope() == INDEXED_ATTRIBUTE || leftCollectionExpression.getCollectionScope() == PRIMARY_KEY_ATTRIBUTE || leftCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_ATTRIBUTE) && rightCollectionExpression.getCollectionScope() == NON) {
            switch(leftCollectionExpression.getCollectionScope()) {
                case INDEXED_ATTRIBUTE:
                    return new CompareCollectionExpression((Compare) expression, INDEXED_RESULT_SET, leftCollectionExpression, ((Compare) expression).getOperator(), rightCollectionExpression);
                case PRIMARY_KEY_ATTRIBUTE:
                    return new CompareCollectionExpression((Compare) expression, PRIMARY_KEY_RESULT_SET, leftCollectionExpression, ((Compare) expression).getOperator(), rightCollectionExpression);
                case PARTIAL_PRIMARY_KEY_ATTRIBUTE:
                    return new CompareCollectionExpression((Compare) expression, PARTIAL_PRIMARY_KEY_RESULT_SET, leftCollectionExpression, ((Compare) expression).getOperator(), rightCollectionExpression);
            }
        } else if (leftCollectionExpression.getCollectionScope() == NON && (rightCollectionExpression.getCollectionScope() == INDEXED_ATTRIBUTE || rightCollectionExpression.getCollectionScope() == PRIMARY_KEY_ATTRIBUTE || rightCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_ATTRIBUTE)) {
            Compare.Operator operator = ((Compare) expression).getOperator();
            // moving let to right
            switch(operator) {
                case LESS_THAN:
                    operator = Compare.Operator.GREATER_THAN;
                    break;
                case GREATER_THAN:
                    operator = Compare.Operator.LESS_THAN;
                    break;
                case LESS_THAN_EQUAL:
                    operator = Compare.Operator.GREATER_THAN_EQUAL;
                    break;
                case GREATER_THAN_EQUAL:
                    operator = Compare.Operator.LESS_THAN_EQUAL;
                    break;
                case EQUAL:
                    break;
                case NOT_EQUAL:
                    break;
            }
            switch(rightCollectionExpression.getCollectionScope()) {
                case INDEXED_ATTRIBUTE:
                    return new CompareCollectionExpression((Compare) expression, INDEXED_RESULT_SET, rightCollectionExpression, operator, leftCollectionExpression);
                case PRIMARY_KEY_ATTRIBUTE:
                    return new CompareCollectionExpression((Compare) expression, PRIMARY_KEY_RESULT_SET, rightCollectionExpression, operator, leftCollectionExpression);
                case PARTIAL_PRIMARY_KEY_ATTRIBUTE:
                    return new CompareCollectionExpression((Compare) expression, PARTIAL_PRIMARY_KEY_RESULT_SET, rightCollectionExpression, operator, leftCollectionExpression);
            }
        } else {
            // comparing non indexed table with stream attributes or another table attribute
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        }
    } else if (expression instanceof Constant) {
        return new BasicCollectionExpression(expression, NON);
    } else if (expression instanceof Variable) {
        if (isCollectionVariable(matchingMetaInfoHolder, (Variable) expression)) {
            if (indexedEventHolder.isAttributeIndexed(((Variable) expression).getAttributeName())) {
                return new AttributeCollectionExpression(expression, ((Variable) expression).getAttributeName(), INDEXED_ATTRIBUTE);
            } else if (indexedEventHolder.isMultiPrimaryKeyAttribute(((Variable) expression).getAttributeName())) {
                if (indexedEventHolder.getPrimaryKeyReferenceHolders() != null && indexedEventHolder.getPrimaryKeyReferenceHolders().length == 1) {
                    return new AttributeCollectionExpression(expression, ((Variable) expression).getAttributeName(), PRIMARY_KEY_ATTRIBUTE);
                } else {
                    return new AttributeCollectionExpression(expression, ((Variable) expression).getAttributeName(), PARTIAL_PRIMARY_KEY_ATTRIBUTE);
                }
            } else {
                return new BasicCollectionExpression(expression, EXHAUSTIVE);
            }
        } else {
            return new BasicCollectionExpression(expression, NON);
        }
    } else if (expression instanceof Multiply) {
        CollectionExpression left = parseInternalCollectionExpression(((Multiply) expression).getLeftValue(), matchingMetaInfoHolder, indexedEventHolder);
        CollectionExpression right = parseInternalCollectionExpression(((Multiply) expression).getRightValue(), matchingMetaInfoHolder, indexedEventHolder);
        if (left.getCollectionScope() == NON && right.getCollectionScope() == NON) {
            return new BasicCollectionExpression(expression, NON);
        } else {
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        }
    } else if (expression instanceof Add) {
        CollectionExpression left = parseInternalCollectionExpression(((Add) expression).getLeftValue(), matchingMetaInfoHolder, indexedEventHolder);
        CollectionExpression right = parseInternalCollectionExpression(((Add) expression).getRightValue(), matchingMetaInfoHolder, indexedEventHolder);
        if (left.getCollectionScope() == NON && right.getCollectionScope() == NON) {
            return new BasicCollectionExpression(expression, NON);
        } else {
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        }
    } else if (expression instanceof Subtract) {
        CollectionExpression left = parseInternalCollectionExpression(((Subtract) expression).getLeftValue(), matchingMetaInfoHolder, indexedEventHolder);
        CollectionExpression right = parseInternalCollectionExpression(((Subtract) expression).getRightValue(), matchingMetaInfoHolder, indexedEventHolder);
        if (left.getCollectionScope() == NON && right.getCollectionScope() == NON) {
            return new BasicCollectionExpression(expression, NON);
        } else {
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        }
    } else if (expression instanceof Mod) {
        CollectionExpression left = parseInternalCollectionExpression(((Mod) expression).getLeftValue(), matchingMetaInfoHolder, indexedEventHolder);
        CollectionExpression right = parseInternalCollectionExpression(((Mod) expression).getRightValue(), matchingMetaInfoHolder, indexedEventHolder);
        if (left.getCollectionScope() == NON && right.getCollectionScope() == NON) {
            return new BasicCollectionExpression(expression, NON);
        } else {
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        }
    } else if (expression instanceof Divide) {
        CollectionExpression left = parseInternalCollectionExpression(((Divide) expression).getLeftValue(), matchingMetaInfoHolder, indexedEventHolder);
        CollectionExpression right = parseInternalCollectionExpression(((Divide) expression).getRightValue(), matchingMetaInfoHolder, indexedEventHolder);
        if (left.getCollectionScope() == NON && right.getCollectionScope() == NON) {
            return new BasicCollectionExpression(expression, NON);
        } else {
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        }
    } else if (expression instanceof AttributeFunction) {
        Expression[] innerExpressions = ((AttributeFunction) expression).getParameters();
        for (Expression aExpression : innerExpressions) {
            CollectionExpression aCollectionExpression = parseInternalCollectionExpression(aExpression, matchingMetaInfoHolder, indexedEventHolder);
            if (aCollectionExpression.getCollectionScope() != NON) {
                return new BasicCollectionExpression(expression, EXHAUSTIVE);
            }
        }
        return new BasicCollectionExpression(expression, NON);
    } else if (expression instanceof In) {
        CollectionExpression inCollectionExpression = parseInternalCollectionExpression(((In) expression).getExpression(), matchingMetaInfoHolder, indexedEventHolder);
        if (inCollectionExpression.getCollectionScope() != NON) {
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        }
        return new BasicCollectionExpression(expression, NON);
    } else if (expression instanceof IsNull) {
        CollectionExpression nullCollectionExpression = parseInternalCollectionExpression(((IsNull) expression).getExpression(), matchingMetaInfoHolder, indexedEventHolder);
        if (nullCollectionExpression.getCollectionScope() == NON) {
            return new BasicCollectionExpression(expression, NON);
        } else if (nullCollectionExpression.getCollectionScope() == INDEXED_ATTRIBUTE) {
            return new NullCollectionExpression(expression, INDEXED_RESULT_SET, ((AttributeCollectionExpression) nullCollectionExpression).getAttribute());
        } else if (nullCollectionExpression.getCollectionScope() == PRIMARY_KEY_ATTRIBUTE) {
            return new NullCollectionExpression(expression, PRIMARY_KEY_RESULT_SET, ((AttributeCollectionExpression) nullCollectionExpression).getAttribute());
        } else {
            return new BasicCollectionExpression(expression, EXHAUSTIVE);
        }
    }
    throw new UnsupportedOperationException(expression.toString() + " not supported!");
}

Example 2 with IsNull

use of org.wso2.siddhi.query.api.expression.condition.IsNull in project carbon-apimgt by wso2.

the class ApiFileDAOImpl method getAPIs.

/**
 * @see ApiDAO#getAPIs(Set, String)
 */
@Override
public List<API> getAPIs(Set<String> roles, String user) throws APIMgtDAOException {
    File[] files = new File(storagePath).listFiles();
    List<API> apiList = new ArrayList<>();
    final FilenameFilter filenameFilter = (dir, name) -> (name.endsWith(APIMgtConstants.APIFileUtilConstants.JSON_EXTENSION) && name.contains(APIMgtConstants.APIFileUtilConstants.API_DEFINITION_FILE_PREFIX) && !dir.isHidden());
    if (files != null) {
        for (File file : files) {
            apiList.add((API) fetchObject(file, FileApi.class, filenameFilter));
        }
    }
    apiList.removeIf(Objects::isNull);
    return apiList;
}

Example 3 with IsNull

use of org.wso2.siddhi.query.api.expression.condition.IsNull in project ballerina by ballerina-lang.

the class ServiceTest method testGetFormParamsForUndefinedKey.

@Test(description = "Test GetFormParams with undefined key")
public void testGetFormParamsForUndefinedKey() {
    String path = "/echo/getFormParams";
    HTTPTestRequest requestMsg = MessageUtils.generateHTTPMessage(path, "POST", "firstName=WSO2&company=BalDance");
    requestMsg.setHeader(HttpHeaderNames.CONTENT_TYPE.toString(), APPLICATION_FORM);
    HTTPCarbonMessage responseMsg = Services.invokeNew(compileResult, TEST_ENDPOINT_NAME, requestMsg);
    Assert.assertNotNull(responseMsg, "responseMsg message not found");
    BJSON bJson = new BJSON(new HttpMessageDataStreamer(responseMsg).getInputStream());
    Assert.assertTrue(bJson.value().get("Team").isNull(), "Team variable not set properly.");
}

Example 4 with IsNull

use of org.wso2.siddhi.query.api.expression.condition.IsNull in project siddhi by wso2.

the class ExpressionParser method parseExpression.

/**
 * Parse the given expression and create the appropriate Executor by recursively traversing the expression
 *
 * @param expression              Expression to be parsed
 * @param metaEvent               Meta Event
 * @param currentState            Current state number
 * @param tableMap                Event Table Map
 * @param executorList            List to hold VariableExpressionExecutors to update after query parsing @return
 * @param siddhiAppContext        SiddhiAppContext
 * @param groupBy                 is for groupBy expression
 * @param defaultStreamEventIndex Default StreamEvent Index
 * @param queryName               query name of expression belongs to.
 * @return ExpressionExecutor
 */
public static ExpressionExecutor parseExpression(Expression expression, MetaComplexEvent metaEvent, int currentState, Map<String, Table> tableMap, List<VariableExpressionExecutor> executorList, SiddhiAppContext siddhiAppContext, boolean groupBy, int defaultStreamEventIndex, String queryName) {
    try {
        if (expression instanceof And) {
            return new AndConditionExpressionExecutor(parseExpression(((And) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((And) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
        } else if (expression instanceof Or) {
            return new OrConditionExpressionExecutor(parseExpression(((Or) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Or) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
        } else if (expression instanceof Not) {
            return new NotConditionExpressionExecutor(parseExpression(((Not) expression).getExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
        } else if (expression instanceof Compare) {
            if (((Compare) expression).getOperator() == Compare.Operator.EQUAL) {
                return parseEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.NOT_EQUAL) {
                return parseNotEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.GREATER_THAN) {
                return parseGreaterThanCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.GREATER_THAN_EQUAL) {
                return parseGreaterThanEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.LESS_THAN) {
                return parseLessThanCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.LESS_THAN_EQUAL) {
                return parseLessThanEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            }
        } else if (expression instanceof Constant) {
            if (expression instanceof BoolConstant) {
                return new ConstantExpressionExecutor(((BoolConstant) expression).getValue(), Attribute.Type.BOOL);
            } else if (expression instanceof StringConstant) {
                return new ConstantExpressionExecutor(((StringConstant) expression).getValue(), Attribute.Type.STRING);
            } else if (expression instanceof IntConstant) {
                return new ConstantExpressionExecutor(((IntConstant) expression).getValue(), Attribute.Type.INT);
            } else if (expression instanceof LongConstant) {
                return new ConstantExpressionExecutor(((LongConstant) expression).getValue(), Attribute.Type.LONG);
            } else if (expression instanceof FloatConstant) {
                return new ConstantExpressionExecutor(((FloatConstant) expression).getValue(), Attribute.Type.FLOAT);
            } else if (expression instanceof DoubleConstant) {
                return new ConstantExpressionExecutor(((DoubleConstant) expression).getValue(), Attribute.Type.DOUBLE);
            }
        } else if (expression instanceof Variable) {
            return parseVariable((Variable) expression, metaEvent, currentState, executorList, defaultStreamEventIndex);
        } else if (expression instanceof Multiply) {
            ExpressionExecutor left = parseExpression(((Multiply) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Multiply) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new MultiplyExpressionExecutorInt(left, right);
                case LONG:
                    return new MultiplyExpressionExecutorLong(left, right);
                case FLOAT:
                    return new MultiplyExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new MultiplyExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof Add) {
            ExpressionExecutor left = parseExpression(((Add) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Add) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new AddExpressionExecutorInt(left, right);
                case LONG:
                    return new AddExpressionExecutorLong(left, right);
                case FLOAT:
                    return new AddExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new AddExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof Subtract) {
            ExpressionExecutor left = parseExpression(((Subtract) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Subtract) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new SubtractExpressionExecutorInt(left, right);
                case LONG:
                    return new SubtractExpressionExecutorLong(left, right);
                case FLOAT:
                    return new SubtractExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new SubtractExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof Mod) {
            ExpressionExecutor left = parseExpression(((Mod) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Mod) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new ModExpressionExecutorInt(left, right);
                case LONG:
                    return new ModExpressionExecutorLong(left, right);
                case FLOAT:
                    return new ModExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new ModExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof Divide) {
            ExpressionExecutor left = parseExpression(((Divide) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Divide) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new DivideExpressionExecutorInt(left, right);
                case LONG:
                    return new DivideExpressionExecutorLong(left, right);
                case FLOAT:
                    return new DivideExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new DivideExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof AttributeFunction) {
            // extensions
            Object executor;
            try {
                if ((siddhiAppContext.isFunctionExist(((AttributeFunction) expression).getName())) && (((AttributeFunction) expression).getNamespace()).isEmpty()) {
                    executor = new ScriptFunctionExecutor(((AttributeFunction) expression).getName());
                } else {
                    executor = SiddhiClassLoader.loadExtensionImplementation((AttributeFunction) expression, FunctionExecutorExtensionHolder.getInstance(siddhiAppContext));
                }
            } catch (SiddhiAppCreationException ex) {
                try {
                    executor = SiddhiClassLoader.loadExtensionImplementation((AttributeFunction) expression, AttributeAggregatorExtensionHolder.getInstance(siddhiAppContext));
                } catch (SiddhiAppCreationException e) {
                    throw new SiddhiAppCreationException("'" + ((AttributeFunction) expression).getName() + "' is" + " neither a function extension nor an aggregated attribute extension", expression.getQueryContextStartIndex(), expression.getQueryContextEndIndex());
                }
            }
            ConfigReader configReader = siddhiAppContext.getSiddhiContext().getConfigManager().generateConfigReader(((AttributeFunction) expression).getNamespace(), ((AttributeFunction) expression).getName());
            if (executor instanceof FunctionExecutor) {
                FunctionExecutor expressionExecutor = (FunctionExecutor) executor;
                Expression[] innerExpressions = ((AttributeFunction) expression).getParameters();
                ExpressionExecutor[] innerExpressionExecutors = parseInnerExpression(innerExpressions, metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
                expressionExecutor.initExecutor(innerExpressionExecutors, siddhiAppContext, queryName, configReader);
                if (expressionExecutor.getReturnType() == Attribute.Type.BOOL) {
                    return new BoolConditionExpressionExecutor(expressionExecutor);
                }
                return expressionExecutor;
            } else {
                AttributeAggregator attributeAggregator = (AttributeAggregator) executor;
                Expression[] innerExpressions = ((AttributeFunction) expression).getParameters();
                ExpressionExecutor[] innerExpressionExecutors = parseInnerExpression(innerExpressions, metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
                attributeAggregator.initAggregator(innerExpressionExecutors, siddhiAppContext, configReader);
                AbstractAggregationAttributeExecutor aggregationAttributeProcessor;
                if (groupBy) {
                    aggregationAttributeProcessor = new GroupByAggregationAttributeExecutor(attributeAggregator, innerExpressionExecutors, configReader, siddhiAppContext, queryName);
                } else {
                    aggregationAttributeProcessor = new AggregationAttributeExecutor(attributeAggregator, innerExpressionExecutors, siddhiAppContext, queryName);
                }
                SelectorParser.getContainsAggregatorThreadLocal().set("true");
                return aggregationAttributeProcessor;
            }
        } else if (expression instanceof In) {
            Table table = tableMap.get(((In) expression).getSourceId());
            MatchingMetaInfoHolder matchingMetaInfoHolder = MatcherParser.constructMatchingMetaStateHolder(metaEvent, defaultStreamEventIndex, table.getTableDefinition(), defaultStreamEventIndex);
            CompiledCondition compiledCondition = table.compileCondition(((In) expression).getExpression(), matchingMetaInfoHolder, siddhiAppContext, executorList, tableMap, queryName);
            return new InConditionExpressionExecutor(table, compiledCondition, matchingMetaInfoHolder.getMetaStateEvent().getMetaStreamEvents().length, metaEvent instanceof StateEvent, 0);
        } else if (expression instanceof IsNull) {
            IsNull isNull = (IsNull) expression;
            if (isNull.getExpression() != null) {
                ExpressionExecutor innerExpressionExecutor = parseExpression(isNull.getExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
                return new IsNullConditionExpressionExecutor(innerExpressionExecutor);
            } else {
                String streamId = isNull.getStreamId();
                Integer streamIndex = isNull.getStreamIndex();
                if (metaEvent instanceof MetaStateEvent) {
                    int[] eventPosition = new int[2];
                    if (streamIndex != null) {
                        if (streamIndex <= LAST) {
                            eventPosition[STREAM_EVENT_INDEX_IN_CHAIN] = streamIndex + 1;
                        } else {
                            eventPosition[STREAM_EVENT_INDEX_IN_CHAIN] = streamIndex;
                        }
                    } else {
                        eventPosition[STREAM_EVENT_INDEX_IN_CHAIN] = defaultStreamEventIndex;
                    }
                    eventPosition[STREAM_EVENT_CHAIN_INDEX] = UNKNOWN_STATE;
                    MetaStateEvent metaStateEvent = (MetaStateEvent) metaEvent;
                    if (streamId == null) {
                        throw new SiddhiAppCreationException("IsNull does not support streamId being null", expression.getQueryContextStartIndex(), expression.getQueryContextEndIndex());
                    } else {
                        MetaStreamEvent[] metaStreamEvents = metaStateEvent.getMetaStreamEvents();
                        for (int i = 0, metaStreamEventsLength = metaStreamEvents.length; i < metaStreamEventsLength; i++) {
                            MetaStreamEvent metaStreamEvent = metaStreamEvents[i];
                            AbstractDefinition definition = metaStreamEvent.getLastInputDefinition();
                            if (metaStreamEvent.getInputReferenceId() == null) {
                                if (definition.getId().equals(streamId)) {
                                    eventPosition[STREAM_EVENT_CHAIN_INDEX] = i;
                                    break;
                                }
                            } else {
                                if (metaStreamEvent.getInputReferenceId().equals(streamId)) {
                                    eventPosition[STREAM_EVENT_CHAIN_INDEX] = i;
                                    if (currentState > -1 && metaStreamEvents[currentState].getInputReferenceId() != null && streamIndex != null && streamIndex <= LAST) {
                                        if (streamId.equals(metaStreamEvents[currentState].getInputReferenceId())) {
                                            eventPosition[STREAM_EVENT_INDEX_IN_CHAIN] = streamIndex;
                                        }
                                    }
                                    break;
                                }
                            }
                        }
                    }
                    return new IsNullStreamConditionExpressionExecutor(eventPosition);
                } else {
                    return new IsNullStreamConditionExpressionExecutor(null);
                }
            }
        }
        throw new UnsupportedOperationException(expression.toString() + " not supported!");
    } catch (Throwable t) {
        ExceptionUtil.populateQueryContext(t, expression, siddhiAppContext);
        throw t;
    }
}

Example 5 with IsNull

use of org.wso2.siddhi.query.api.expression.condition.IsNull in project siddhi by wso2.

the class IsNullTestCase method isNullTest2.

@Test
public void isNullTest2() throws InterruptedException {
    log.info("isNull test2");
    SiddhiManager siddhiManager = new SiddhiManager();
    String streams = "" + "define stream Stream1 (symbol string, price float, volume int); " + "define stream Stream2 (symbol string, price float, volume int); ";
    String query = "" + "@info(name = 'query1') " + "from every e1=Stream1[price>20], " + "   e2=Stream1[(price>=e2[last].price and not e2[last-1] is null and price>=e2[last-1].price+5)  or (" + " e2[last-1] is null and price>=e1.price+5 )]+, " + "   e3=Stream1[price<e2[last].price]" + "select e1.price as price1, e2[0].price as price2, e2[last-2] is null as check1, e2[last-1].price as " + "price3, e2[last].price as price4, e3.price as price5, e2 is null as check2 " + "insert into OutputStream ;";
    SiddhiAppRuntime siddhiAppRuntime = siddhiManager.createSiddhiAppRuntime(streams + query);
    siddhiAppRuntime.addCallback("query1", new QueryCallback() {

        @Override
        public void receive(long timestamp, Event[] inEvents, Event[] removeEvents) {
            EventPrinter.print(timestamp, inEvents, removeEvents);
            if (inEvents != null) {
                for (Event event : inEvents) {
                    inEventCount++;
                    switch(inEventCount) {
                        case 1:
                            org.testng.AssertJUnit.assertArrayEquals(new Object[] { 43.6f, 58.7f, true, null, 58.7f, 45.6f, false }, event.getData());
                            break;
                        default:
                            org.testng.AssertJUnit.assertSame(1, inEventCount);
                    }
                }
                eventArrived = true;
            }
            if (removeEvents != null) {
                removeEventCount = removeEventCount + removeEvents.length;
            }
            eventArrived = true;
        }
    });
    InputHandler stream1 = siddhiAppRuntime.getInputHandler("Stream1");
    InputHandler stream2 = siddhiAppRuntime.getInputHandler("Stream2");
    siddhiAppRuntime.start();
    stream1.send(new Object[] { "WSO2", 29.6f, 100 });
    Thread.sleep(100);
    stream1.send(new Object[] { "WSO2", 25.0f, 100 });
    Thread.sleep(100);
    stream1.send(new Object[] { "WSO2", 35.6f, 100 });
    Thread.sleep(100);
    stream1.send(new Object[] { "WSO2", 41.5f, 100 });
    Thread.sleep(100);
    stream1.send(new Object[] { "WSO2", 42.6f, 100 });
    Thread.sleep(100);
    stream1.send(new Object[] { "WSO2", 43.6f, 100 });
    Thread.sleep(100);
    stream1.send(new Object[] { "IBM", 58.7f, 100 });
    Thread.sleep(100);
    stream1.send(new Object[] { "IBM", 45.6f, 100 });
    Thread.sleep(100);
    org.testng.AssertJUnit.assertEquals("Number of success events", 1, inEventCount);
    org.testng.AssertJUnit.assertEquals("Number of remove events", 0, removeEventCount);
    org.testng.AssertJUnit.assertEquals("Event arrived", true, eventArrived);
    siddhiAppRuntime.shutdown();
}