Examples with Constant org.wso2.siddhi.query.api.expression.constant.Constant used on opensource projects

Example 1 with Constant

use of org.wso2.siddhi.query.api.expression.constant.Constant in project siddhi by wso2.

the class TimeBatchWindowProcessor method init.

@Override
protected void init(ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, boolean outputExpectsExpiredEvents, SiddhiAppContext siddhiAppContext) {
    this.outputExpectsExpiredEvents = outputExpectsExpiredEvents;
    this.siddhiAppContext = siddhiAppContext;
    if (outputExpectsExpiredEvents) {
        this.expiredEventChunk = new ComplexEventChunk<StreamEvent>(false);
    }
    if (attributeExpressionExecutors.length == 1) {
        if (attributeExpressionExecutors[0] instanceof ConstantExpressionExecutor) {
            if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.INT) {
                timeInMilliSeconds = (Integer) ((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue();
            } else if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.LONG) {
                timeInMilliSeconds = (Long) ((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue();
            } else {
                throw new SiddhiAppValidationException("Time window's parameter attribute should be either " + "int or long, but found " + attributeExpressionExecutors[0].getReturnType());
            }
        } else {
            throw new SiddhiAppValidationException("Time window should have constant parameter attribute but " + "found a dynamic attribute " + attributeExpressionExecutors[0].getClass().getCanonicalName());
        }
    } else if (attributeExpressionExecutors.length == 2) {
        if (attributeExpressionExecutors[0] instanceof ConstantExpressionExecutor) {
            if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.INT) {
                timeInMilliSeconds = (Integer) ((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue();
            } else if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.LONG) {
                timeInMilliSeconds = (Long) ((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue();
            } else {
                throw new SiddhiAppValidationException("Time window's parameter attribute should be either " + "int or long, but found " + attributeExpressionExecutors[0].getReturnType());
            }
        } else {
            throw new SiddhiAppValidationException("Time window should have constant parameter attribute but " + "found a dynamic attribute " + attributeExpressionExecutors[0].getClass().getCanonicalName());
        }
        // start time
        isStartTimeEnabled = true;
        if (attributeExpressionExecutors[1].getReturnType() == Attribute.Type.INT) {
            startTime = Integer.parseInt(String.valueOf(((ConstantExpressionExecutor) attributeExpressionExecutors[1]).getValue()));
        } else {
            startTime = Long.parseLong(String.valueOf(((ConstantExpressionExecutor) attributeExpressionExecutors[1]).getValue()));
        }
    } else {
        throw new SiddhiAppValidationException("Time window should only have one or two parameters. " + "(<int|long|time> windowTime), but found " + attributeExpressionExecutors.length + " input " + "attributes");
    }
}

Example 2 with Constant

use of org.wso2.siddhi.query.api.expression.constant.Constant in project siddhi by wso2.

the class TimeLengthWindowProcessor method init.

@Override
protected void init(ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, boolean outputExpectsExpiredEvents, SiddhiAppContext siddhiAppContext) {
    this.siddhiAppContext = siddhiAppContext;
    expiredEventChunk = new ComplexEventChunk<StreamEvent>(false);
    if (attributeExpressionExecutors.length == 2) {
        length = (Integer) ((ConstantExpressionExecutor) attributeExpressionExecutors[1]).getValue();
        if (attributeExpressionExecutors[0] instanceof ConstantExpressionExecutor) {
            if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.INT) {
                timeInMilliSeconds = (Integer) ((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue();
            } else if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.LONG) {
                timeInMilliSeconds = (Long) ((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue();
            } else {
                throw new SiddhiAppValidationException("TimeLength window's first parameter attribute should " + "be either int or long, but found " + attributeExpressionExecutors[0].getReturnType());
            }
        } else {
            throw new SiddhiAppValidationException("TimeLength window should have constant parameter " + "attributes but found a dynamic attribute " + attributeExpressionExecutors[0].getClass().getCanonicalName());
        }
    } else {
        throw new SiddhiAppValidationException("TimeLength window should only have two parameters (<int> " + "windowTime,<int> windowLength), but found " + attributeExpressionExecutors.length + " input " + "attributes");
    }
}

Example 3 with Constant

use of org.wso2.siddhi.query.api.expression.constant.Constant in project siddhi by wso2.

the class TimeWindowProcessor method init.

@Override
protected void init(ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, boolean outputExpectsExpiredEvents, SiddhiAppContext siddhiAppContext) {
    this.siddhiAppContext = siddhiAppContext;
    this.expiredEventChunk = new ComplexEventChunk<StreamEvent>(false);
    if (attributeExpressionExecutors.length == 1) {
        if (attributeExpressionExecutors[0] instanceof ConstantExpressionExecutor) {
            if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.INT) {
                timeInMilliSeconds = (Integer) ((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue();
            } else if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.LONG) {
                timeInMilliSeconds = (Long) ((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue();
            } else {
                throw new SiddhiAppValidationException("Time window's parameter attribute should be either " + "int or long, but found " + attributeExpressionExecutors[0].getReturnType());
            }
        } else {
            throw new SiddhiAppValidationException("Time window should have constant parameter attribute but " + "found a dynamic attribute " + attributeExpressionExecutors[0].getClass().getCanonicalName());
        }
    } else {
        throw new SiddhiAppValidationException("Time window should only have one parameter (<int|long|time> " + "windowTime), but found " + attributeExpressionExecutors.length + " input attributes");
    }
}

Example 4 with Constant

use of org.wso2.siddhi.query.api.expression.constant.Constant 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 5 with Constant

use of org.wso2.siddhi.query.api.expression.constant.Constant in project siddhi by wso2.

the class SetUpdateInMemoryTableTestCase method updateFromTableTest3.

@Test
public void updateFromTableTest3() throws InterruptedException, SQLException {
    log.info("SET-RDBMS-update test case 3: using a constant value as the assigment expression.");
    SiddhiManager siddhiManager = new SiddhiManager();
    String streams = "" + "define stream StockStream (symbol string, price float, volume long); " + "define stream UpdateStockStream (symbol string, price float, volume long); " + "define table StockTable (symbol string, price float, volume long); ";
    String query = "" + "@info(name = 'query1') " + "from StockStream " + "insert into StockTable ;" + "" + "@info(name = 'query2') " + "from UpdateStockStream " + "update StockTable " + "set StockTable.price = 10 " + "   on StockTable.symbol == symbol ;";
    SiddhiAppRuntime siddhiAppRuntime = siddhiManager.createSiddhiAppRuntime(streams + query);
    InputHandler stockStream = siddhiAppRuntime.getInputHandler("StockStream");
    InputHandler updateStockStream = siddhiAppRuntime.getInputHandler("UpdateStockStream");
    siddhiAppRuntime.start();
    stockStream.send(new Object[] { "WSO2", 55.6f, 100L });
    stockStream.send(new Object[] { "IBM", 75.6f, 100L });
    stockStream.send(new Object[] { "WSO2", 57.6f, 100L });
    updateStockStream.send(new Object[] { "IBM", 100f, 100L });
    Thread.sleep(1000);
    siddhiAppRuntime.shutdown();
}