use of org.wso2.siddhi.core.table.holder.IndexEventHolder in project siddhi by wso2.
the class EventHolderPasser method parse.
public static EventHolder parse(AbstractDefinition tableDefinition, StreamEventPool tableStreamEventPool, SiddhiAppContext siddhiAppContext) {
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);
}
// indexes.
Annotation indexAnnotation = AnnotationHelper.getAnnotation(SiddhiConstants.ANNOTATION_INDEX, tableDefinition.getAnnotations());
if (indexAnnotation != null) {
if (indexAnnotation.getElements().size() == 0) {
throw new SiddhiAppValidationException(SiddhiConstants.ANNOTATION_INDEX + " annotation contains " + indexAnnotation.getElements().size() + " element");
}
for (Element element : indexAnnotation.getElements()) {
Integer previousValue = indexMetaData.put(element.getValue().trim(), tableDefinition.getAttributePosition(element.getValue().trim()));
if (previousValue != null) {
throw new SiddhiAppCreationException("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;
}
}
}
return new IndexEventHolder(tableStreamEventPool, eventConverter, primaryKeyReferenceHolders, isNumeric, indexMetaData, tableDefinition, siddhiAppContext);
} else {
return new ListEventHolder(tableStreamEventPool, eventConverter);
}
}
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