Examples with IndexEventHolder io.siddhi.core.table.holder.IndexEventHolder used on opensource projects

Example 1 with IndexEventHolder

use of io.siddhi.core.table.holder.IndexEventHolder in project siddhi by wso2.

the class CacheTableFIFO method deleteOneEntryUsingCachePolicy.

@Override
public void deleteOneEntryUsingCachePolicy() {
    IndexEventHolder indexEventHolder = (IndexEventHolder) stateHolder.getState().getEventHolder();
    Set<Object> keys = indexEventHolder.getAllPrimaryKeyValues();
    long minTimestamp = Long.MAX_VALUE;
    Object keyOfMinTimestamp = null;
    for (Object key : keys) {
        Object[] data = indexEventHolder.getEvent(key).getOutputData();
        long timestamp = (long) data[cachePolicyAttributePosition];
        if (timestamp < minTimestamp) {
            minTimestamp = timestamp;
            keyOfMinTimestamp = key;
        }
    }
    indexEventHolder.deleteEvent(keyOfMinTimestamp);
}

Example 2 with IndexEventHolder

use of io.siddhi.core.table.holder.IndexEventHolder in project siddhi by wso2.

the class CacheTableLRU method deleteOneEntryUsingCachePolicy.

@Override
public void deleteOneEntryUsingCachePolicy() {
    IndexEventHolder indexEventHolder = (IndexEventHolder) stateHolder.getState().getEventHolder();
    Set<Object> keys = indexEventHolder.getAllPrimaryKeyValues();
    long minTimestamp = Long.MAX_VALUE;
    Object keyOfMinTimestamp = null;
    for (Object key : keys) {
        Object[] data = indexEventHolder.getEvent(key).getOutputData();
        long timestamp = (long) data[cachePolicyAttributePosition];
        if (timestamp < minTimestamp) {
            minTimestamp = timestamp;
            keyOfMinTimestamp = key;
        }
    }
    indexEventHolder.deleteEvent(keyOfMinTimestamp);
}

Example 3 with IndexEventHolder

use of io.siddhi.core.table.holder.IndexEventHolder in project siddhi by wso2.

the class CacheTableLFU method deleteEntriesUsingCachePolicy.

@Override
public void deleteEntriesUsingCachePolicy(int numRowsToDelete) {
    IndexEventHolder indexEventHolder = (IndexEventHolder) stateHolder.getState().getEventHolder();
    if (numRowsToDelete >= indexEventHolder.size()) {
        indexEventHolder.deleteAll();
    } else {
        Set<Object> keys = indexEventHolder.getAllPrimaryKeyValues();
        TreeMap<Integer, Object> toDelete = new TreeMap<>();
        for (Object key : keys) {
            if (toDelete.size() < numRowsToDelete) {
                toDelete.put((Integer) indexEventHolder.getEvent(key).getOutputData()[cachePolicyAttributePosition], key);
            } else {
                Integer count = (Integer) indexEventHolder.getEvent(key).getOutputData()[cachePolicyAttributePosition];
                Integer firstKey = toDelete.firstKey();
                if (count < firstKey) {
                    toDelete.remove(firstKey);
                    toDelete.put(count, key);
                }
            }
        }
        for (Object deleteKey : toDelete.values()) {
            if (deleteKey != null) {
                indexEventHolder.deleteEvent(deleteKey);
            }
        }
    }
}

Example 4 with IndexEventHolder

use of io.siddhi.core.table.holder.IndexEventHolder in project siddhi by wso2.

the class CacheTableLFU method deleteOneEntryUsingCachePolicy.

@Override
public void deleteOneEntryUsingCachePolicy() {
    IndexEventHolder indexEventHolder = (IndexEventHolder) stateHolder.getState().getEventHolder();
    Set<Object> keys = indexEventHolder.getAllPrimaryKeyValues();
    int minCount = Integer.MAX_VALUE;
    Object keyOfMinCount = null;
    for (Object key : keys) {
        Object[] data = indexEventHolder.getEvent(key).getOutputData();
        int count = (int) data[cachePolicyAttributePosition];
        if (count < minCount) {
            minCount = count;
            keyOfMinCount = key;
        }
    }
    indexEventHolder.deleteEvent(keyOfMinCount);
}

Example 5 with IndexEventHolder

use of io.siddhi.core.table.holder.IndexEventHolder in project siddhi by wso2.

the class EventHolderPasser method parse.

public static EventHolder parse(AbstractDefinition tableDefinition, StreamEventFactory tableStreamEventFactory, SiddhiAppContext siddhiAppContext, boolean isCacheTable) {
    ZeroStreamEventConverter eventConverter = new ZeroStreamEventConverter();
    PrimaryKeyReferenceHolder[] primaryKeyReferenceHolders = null;
    Map<String, Integer> indexMetaData = new HashMap<String, Integer>();
    // primaryKey.
    Annotation primaryKeyAnnotation = AnnotationHelper.getAnnotation(SiddhiConstants.ANNOTATION_PRIMARY_KEY, tableDefinition.getAnnotations());
    if (primaryKeyAnnotation != null) {
        if (primaryKeyAnnotation.getElements().size() == 0) {
            throw new SiddhiAppValidationException(SiddhiConstants.ANNOTATION_PRIMARY_KEY + " annotation " + "contains " + primaryKeyAnnotation.getElements().size() + " element, at '" + tableDefinition.getId() + "'");
        }
        primaryKeyReferenceHolders = primaryKeyAnnotation.getElements().stream().map(element -> element.getValue().trim()).map(key -> new PrimaryKeyReferenceHolder(key, tableDefinition.getAttributePosition(key))).toArray(PrimaryKeyReferenceHolder[]::new);
    }
    for (Annotation indexAnnotation : AnnotationHelper.getAnnotations(SiddhiConstants.ANNOTATION_INDEX, tableDefinition.getAnnotations())) {
        if (indexAnnotation.getElements().size() == 0) {
            throw new SiddhiAppValidationException(SiddhiConstants.ANNOTATION_INDEX + " annotation of " + "in-memory table should contain only one index element, but found " + indexAnnotation.getElements().size() + " element", indexAnnotation.getQueryContextStartIndex(), indexAnnotation.getQueryContextEndIndex());
        } else if (indexAnnotation.getElements().size() > 1) {
            throw new SiddhiAppValidationException(SiddhiConstants.ANNOTATION_INDEX + " annotation of the " + "in-memory table should only contain one index element but found " + indexAnnotation.getElements().size() + " elements. To use multiple indexes, " + "define multiple '@index(<index key>)' annotations with one index element " + "per each index key", indexAnnotation.getQueryContextStartIndex(), indexAnnotation.getQueryContextEndIndex());
        }
        for (Element element : indexAnnotation.getElements()) {
            Integer previousValue = indexMetaData.put(element.getValue().trim(), tableDefinition.getAttributePosition(element.getValue().trim()));
            if (previousValue != null) {
                throw new SiddhiAppValidationException("Multiple " + SiddhiConstants.ANNOTATION_INDEX + " " + "annotations defined with same attribute '" + element.getValue().trim() + "', at '" + tableDefinition.getId() + "'", indexAnnotation.getQueryContextStartIndex(), indexAnnotation.getQueryContextEndIndex());
            }
        }
    }
    // not support indexBy.
    Annotation indexByAnnotation = AnnotationHelper.getAnnotation(SiddhiConstants.ANNOTATION_INDEX_BY, tableDefinition.getAnnotations());
    if (indexByAnnotation != null) {
        throw new OperationNotSupportedException(SiddhiConstants.ANNOTATION_INDEX_BY + " annotation is not " + "supported anymore, please use @PrimaryKey or @Index annotations instead," + " at '" + tableDefinition.getId() + "'");
    }
    if (primaryKeyReferenceHolders != null || indexMetaData.size() > 0) {
        boolean isNumeric = false;
        if (primaryKeyReferenceHolders != null) {
            if (primaryKeyReferenceHolders.length == 1) {
                Attribute.Type type = tableDefinition.getAttributeType(primaryKeyReferenceHolders[0].getPrimaryKeyAttribute());
                if (type == Attribute.Type.DOUBLE || type == Attribute.Type.FLOAT || type == Attribute.Type.INT || type == Attribute.Type.LONG) {
                    isNumeric = true;
                }
            }
        }
        if (isCacheTable) {
            return new IndexEventHolderForCache(tableStreamEventFactory, eventConverter, primaryKeyReferenceHolders, isNumeric, indexMetaData, tableDefinition, siddhiAppContext);
        } else {
            return new IndexEventHolder(tableStreamEventFactory, eventConverter, primaryKeyReferenceHolders, isNumeric, indexMetaData, tableDefinition, siddhiAppContext);
        }
    } else {
        MetaStreamEvent metaStreamEvent = new MetaStreamEvent();
        for (Attribute attribute : tableDefinition.getAttributeList()) {
            metaStreamEvent.addOutputData(attribute);
        }
        StreamEventCloner streamEventCloner = new StreamEventCloner(metaStreamEvent, tableStreamEventFactory);
        return new ListEventHolder(tableStreamEventFactory, eventConverter, new StreamEventClonerHolder(streamEventCloner));
    }
}