Examples with QuerySelector org.wso2.siddhi.core.query.selector.QuerySelector used on opensource projects

Example 6 with QuerySelector

use of org.wso2.siddhi.core.query.selector.QuerySelector in project siddhi by wso2.

the class SelectorParser method parse.

/**
 * Parse Selector portion of a query and return corresponding QuerySelector.
 *
 * @param selector                    selector to be parsed
 * @param outputStream                output stream
 * @param siddhiAppContext            query to be parsed
 * @param metaComplexEvent            Meta event used to collect execution info of stream associated with query
 * @param tableMap                    Table Map
 * @param variableExpressionExecutors variable expression executors
 * @param queryName                   query name of selector belongs to.
 * @param metaPosition                helps to identify the meta position of aggregates
 * @return QuerySelector
 */
public static QuerySelector parse(Selector selector, OutputStream outputStream, SiddhiAppContext siddhiAppContext, MetaComplexEvent metaComplexEvent, Map<String, Table> tableMap, List<VariableExpressionExecutor> variableExpressionExecutors, String queryName, int metaPosition) {
    boolean currentOn = false;
    boolean expiredOn = false;
    String id = null;
    if (outputStream.getOutputEventType() == OutputStream.OutputEventType.CURRENT_EVENTS || outputStream.getOutputEventType() == OutputStream.OutputEventType.ALL_EVENTS) {
        currentOn = true;
    }
    if (outputStream.getOutputEventType() == OutputStream.OutputEventType.EXPIRED_EVENTS || outputStream.getOutputEventType() == OutputStream.OutputEventType.ALL_EVENTS) {
        expiredOn = true;
    }
    id = outputStream.getId();
    containsAggregatorThreadLocal.remove();
    QuerySelector querySelector = new QuerySelector(id, selector, currentOn, expiredOn, siddhiAppContext);
    List<AttributeProcessor> attributeProcessors = getAttributeProcessors(selector, id, siddhiAppContext, metaComplexEvent, tableMap, variableExpressionExecutors, outputStream, queryName, metaPosition);
    querySelector.setAttributeProcessorList(attributeProcessors, "true".equals(containsAggregatorThreadLocal.get()));
    containsAggregatorThreadLocal.remove();
    ConditionExpressionExecutor havingCondition = generateHavingExecutor(selector.getHavingExpression(), metaComplexEvent, siddhiAppContext, tableMap, variableExpressionExecutors, queryName);
    querySelector.setHavingConditionExecutor(havingCondition, "true".equals(containsAggregatorThreadLocal.get()));
    containsAggregatorThreadLocal.remove();
    if (!selector.getGroupByList().isEmpty()) {
        querySelector.setGroupByKeyGenerator(new GroupByKeyGenerator(selector.getGroupByList(), metaComplexEvent, SiddhiConstants.UNKNOWN_STATE, null, variableExpressionExecutors, siddhiAppContext, queryName));
    }
    if (!selector.getOrderByList().isEmpty()) {
        querySelector.setOrderByEventComparator(new OrderByEventComparator(selector.getOrderByList(), metaComplexEvent, SiddhiConstants.HAVING_STATE, null, variableExpressionExecutors, siddhiAppContext, queryName));
    }
    if (selector.getLimit() != null) {
        ExpressionExecutor expressionExecutor = ExpressionParser.parseExpression((Expression) selector.getLimit(), metaComplexEvent, SiddhiConstants.HAVING_STATE, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
        containsAggregatorThreadLocal.remove();
        querySelector.setLimit(((Number) (((ConstantExpressionExecutor) expressionExecutor).getValue())).longValue());
    }
    return querySelector;
}

Example 7 with QuerySelector

use of org.wso2.siddhi.core.query.selector.QuerySelector in project siddhi by wso2.

the class QueryRuntime method clone.

public QueryRuntime clone(String key, ConcurrentMap<String, StreamJunction> localStreamJunctionMap) {
    LockWrapper lockWrapper = null;
    if (synchronised) {
        lockWrapper = new LockWrapper("");
        lockWrapper.setLock(new ReentrantLock());
    }
    StreamRuntime clonedStreamRuntime = this.streamRuntime.clone(key);
    QuerySelector clonedSelector = this.selector.clone(key);
    OutputRateLimiter clonedOutputRateLimiter = outputRateLimiter.clone(key);
    clonedOutputRateLimiter.init(siddhiAppContext, lockWrapper, queryId);
    QueryRuntime queryRuntime = new QueryRuntime(query, siddhiAppContext, clonedStreamRuntime, clonedSelector, clonedOutputRateLimiter, outputCallback, this.metaComplexEvent, synchronised, this.queryId + key);
    QueryParserHelper.initStreamRuntime(clonedStreamRuntime, metaComplexEvent, lockWrapper, queryId);
    queryRuntime.setToLocalStream(toLocalStream);
    if (!toLocalStream) {
        queryRuntime.outputRateLimiter.setOutputCallback(outputCallback);
        queryRuntime.outputCallback = this.outputCallback;
    } else {
        OutputCallback clonedQueryOutputCallback = OutputParser.constructOutputCallback(query.getOutputStream(), key, localStreamJunctionMap, outputStreamDefinition, siddhiAppContext, queryId);
        queryRuntime.outputRateLimiter.setOutputCallback(clonedQueryOutputCallback);
        queryRuntime.outputCallback = clonedQueryOutputCallback;
    }
    return queryRuntime;
}