use of org.wso2.siddhi.core.util.collection.expression.OrCollectionExpression in project siddhi by wso2.
the class CollectionExpressionParser method buildCollectionExecutor.
public static CollectionExecutor buildCollectionExecutor(CollectionExpression collectionExpression, MatchingMetaInfoHolder matchingMetaInfoHolder, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String, Table> tableMap, SiddhiAppContext siddhiAppContext, boolean isFirst, String queryName) {
if (collectionExpression instanceof AttributeCollectionExpression) {
ExpressionExecutor expressionExecutor = null;
if (isFirst) {
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
}
return new CompareCollectionExecutor(expressionExecutor, matchingMetaInfoHolder.getStoreEventIndex(), ((AttributeCollectionExpression) collectionExpression).getAttribute(), Compare.Operator.EQUAL, new ConstantExpressionExecutor(true, Attribute.Type.BOOL));
} else if (collectionExpression instanceof CompareCollectionExpression) {
ExpressionExecutor valueExpressionExecutor = ExpressionParser.parseExpression(((CompareCollectionExpression) collectionExpression).getValueCollectionExpression().getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
AttributeCollectionExpression attributeCollectionExpression = ((AttributeCollectionExpression) ((CompareCollectionExpression) collectionExpression).getAttributeCollectionExpression());
ExpressionExecutor expressionExecutor = null;
if (isFirst) {
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
}
return new CompareCollectionExecutor(expressionExecutor, matchingMetaInfoHolder.getStoreEventIndex(), attributeCollectionExpression.getAttribute(), ((CompareCollectionExpression) collectionExpression).getOperator(), valueExpressionExecutor);
} else if (collectionExpression instanceof NullCollectionExpression) {
ExpressionExecutor expressionExecutor = null;
if (isFirst) {
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
}
return new CompareCollectionExecutor(expressionExecutor, matchingMetaInfoHolder.getStoreEventIndex(), ((NullCollectionExpression) collectionExpression).getAttribute(), Compare.Operator.EQUAL, new ConstantExpressionExecutor(null, Attribute.Type.OBJECT));
} else if (collectionExpression instanceof AndMultiPrimaryKeyCollectionExpression) {
Map<String, ExpressionExecutor> multiPrimaryKeyExpressionExecutors = buildMultiPrimaryKeyExpressionExecutors(collectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, queryName);
List<Attribute> attributes = matchingMetaInfoHolder.getStoreDefinition().getAttributeList();
StringBuilder compositePrimaryKey = new StringBuilder();
List<ExpressionExecutor> sortedExecutors = new ArrayList<ExpressionExecutor>();
for (Attribute attribute : attributes) {
ExpressionExecutor expressionExecutor = multiPrimaryKeyExpressionExecutors.get(attribute.getName());
if (expressionExecutor != null) {
sortedExecutors.add(expressionExecutor);
compositePrimaryKey.append(attribute.getName()).append(SiddhiConstants.KEY_DELIMITER);
}
}
return new AndMultiPrimaryKeyCollectionExecutor(compositePrimaryKey.toString(), sortedExecutors);
} else if (collectionExpression instanceof AndCollectionExpression) {
CollectionExpression leftCollectionExpression = ((AndCollectionExpression) collectionExpression).getLeftCollectionExpression();
CollectionExpression rightCollectionExpression = ((AndCollectionExpression) collectionExpression).getRightCollectionExpression();
ExpressionExecutor expressionExecutor = null;
CollectionExecutor aCollectionExecutor = null;
ExhaustiveCollectionExecutor exhaustiveCollectionExecutor = null;
CollectionExecutor leftCollectionExecutor;
CollectionExecutor rightCollectionExecutor;
switch(leftCollectionExpression.getCollectionScope()) {
case NON:
switch(rightCollectionExpression.getCollectionScope()) {
case NON:
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
return new NonCollectionExecutor(expressionExecutor);
case INDEXED_ATTRIBUTE:
case INDEXED_RESULT_SET:
case PRIMARY_KEY_ATTRIBUTE:
case PRIMARY_KEY_RESULT_SET:
case PARTIAL_PRIMARY_KEY_RESULT_SET:
case OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET:
case EXHAUSTIVE:
expressionExecutor = ExpressionParser.parseExpression(leftCollectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
aCollectionExecutor = buildCollectionExecutor(rightCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
return new NonAndCollectionExecutor(expressionExecutor, aCollectionExecutor, rightCollectionExpression.getCollectionScope());
}
break;
case INDEXED_ATTRIBUTE:
case PRIMARY_KEY_ATTRIBUTE:
switch(rightCollectionExpression.getCollectionScope()) {
case NON:
expressionExecutor = ExpressionParser.parseExpression(rightCollectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
aCollectionExecutor = buildCollectionExecutor(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
return new NonAndCollectionExecutor(expressionExecutor, aCollectionExecutor, rightCollectionExpression.getCollectionScope());
case INDEXED_ATTRIBUTE:
case INDEXED_RESULT_SET:
case PRIMARY_KEY_ATTRIBUTE:
case PRIMARY_KEY_RESULT_SET:
case OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET:
exhaustiveCollectionExecutor = new ExhaustiveCollectionExecutor(ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName), matchingMetaInfoHolder.getStoreEventIndex());
leftCollectionExecutor = buildCollectionExecutor(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, false, queryName);
rightCollectionExecutor = buildCollectionExecutor(rightCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, false, queryName);
return new AnyAndCollectionExecutor(leftCollectionExecutor, rightCollectionExecutor, exhaustiveCollectionExecutor);
case PARTIAL_PRIMARY_KEY_RESULT_SET:
case EXHAUSTIVE:
leftCollectionExecutor = buildCollectionExecutor(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
if (isFirst || leftCollectionExecutor.getDefaultCost() == CollectionExecutor.Cost.SINGLE_RETURN_INDEX_MATCHING) {
exhaustiveCollectionExecutor = new ExhaustiveCollectionExecutor(ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName), matchingMetaInfoHolder.getStoreEventIndex());
}
return new CompareExhaustiveAndCollectionExecutor(leftCollectionExecutor, exhaustiveCollectionExecutor);
}
break;
case INDEXED_RESULT_SET:
case PRIMARY_KEY_RESULT_SET:
case OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET:
switch(rightCollectionExpression.getCollectionScope()) {
case NON:
expressionExecutor = ExpressionParser.parseExpression(rightCollectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
aCollectionExecutor = buildCollectionExecutor(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
return new NonAndCollectionExecutor(expressionExecutor, aCollectionExecutor, rightCollectionExpression.getCollectionScope());
case INDEXED_ATTRIBUTE:
case PRIMARY_KEY_ATTRIBUTE:
exhaustiveCollectionExecutor = new ExhaustiveCollectionExecutor(ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName), matchingMetaInfoHolder.getStoreEventIndex());
leftCollectionExecutor = buildCollectionExecutor(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, false, queryName);
rightCollectionExecutor = buildCollectionExecutor(rightCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, false, queryName);
return new AnyAndCollectionExecutor(rightCollectionExecutor, leftCollectionExecutor, exhaustiveCollectionExecutor);
case INDEXED_RESULT_SET:
case PRIMARY_KEY_RESULT_SET:
case OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET:
exhaustiveCollectionExecutor = new ExhaustiveCollectionExecutor(ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName), matchingMetaInfoHolder.getStoreEventIndex());
leftCollectionExecutor = buildCollectionExecutor(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, false, queryName);
rightCollectionExecutor = buildCollectionExecutor(rightCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, false, queryName);
return new AnyAndCollectionExecutor(leftCollectionExecutor, rightCollectionExecutor, exhaustiveCollectionExecutor);
case PARTIAL_PRIMARY_KEY_RESULT_SET:
case EXHAUSTIVE:
leftCollectionExecutor = buildCollectionExecutor(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
if (isFirst || leftCollectionExecutor.getDefaultCost() == CollectionExecutor.Cost.SINGLE_RETURN_INDEX_MATCHING) {
exhaustiveCollectionExecutor = new ExhaustiveCollectionExecutor(ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName), matchingMetaInfoHolder.getStoreEventIndex());
}
return new CompareExhaustiveAndCollectionExecutor(leftCollectionExecutor, exhaustiveCollectionExecutor);
}
break;
case PARTIAL_PRIMARY_KEY_RESULT_SET:
case EXHAUSTIVE:
switch(rightCollectionExpression.getCollectionScope()) {
case NON:
expressionExecutor = ExpressionParser.parseExpression(rightCollectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
aCollectionExecutor = buildCollectionExecutor(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
return new NonAndCollectionExecutor(expressionExecutor, aCollectionExecutor, rightCollectionExpression.getCollectionScope());
case INDEXED_ATTRIBUTE:
case INDEXED_RESULT_SET:
case PRIMARY_KEY_ATTRIBUTE:
case PRIMARY_KEY_RESULT_SET:
case OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET:
rightCollectionExecutor = buildCollectionExecutor(rightCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
if (isFirst || rightCollectionExecutor.getDefaultCost() == CollectionExecutor.Cost.SINGLE_RETURN_INDEX_MATCHING) {
exhaustiveCollectionExecutor = new ExhaustiveCollectionExecutor(ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName), matchingMetaInfoHolder.getStoreEventIndex());
}
return new CompareExhaustiveAndCollectionExecutor(rightCollectionExecutor, exhaustiveCollectionExecutor);
case PARTIAL_PRIMARY_KEY_RESULT_SET:
case EXHAUSTIVE:
if (isFirst) {
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
}
return new ExhaustiveCollectionExecutor(expressionExecutor, matchingMetaInfoHolder.getStoreEventIndex());
}
break;
}
} else if (collectionExpression instanceof OrCollectionExpression) {
CollectionExpression leftCollectionExpression = ((OrCollectionExpression) collectionExpression).getLeftCollectionExpression();
CollectionExpression rightCollectionExpression = ((OrCollectionExpression) collectionExpression).getRightCollectionExpression();
ExpressionExecutor expressionExecutor = null;
CollectionExecutor aCollectionExecutor = null;
CollectionExecutor leftCollectionExecutor;
CollectionExecutor rightCollectionExecutor;
if (leftCollectionExpression.getCollectionScope() == NON && rightCollectionExpression.getCollectionScope() == NON) {
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
return new NonCollectionExecutor(expressionExecutor);
} else if ((leftCollectionExpression.getCollectionScope() == EXHAUSTIVE && leftCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_RESULT_SET) || (rightCollectionExpression.getCollectionScope() == EXHAUSTIVE && rightCollectionExpression.getCollectionScope() == PARTIAL_PRIMARY_KEY_RESULT_SET)) {
if (isFirst) {
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
}
return new ExhaustiveCollectionExecutor(expressionExecutor, matchingMetaInfoHolder.getStoreEventIndex());
} else {
if (isFirst) {
aCollectionExecutor = new ExhaustiveCollectionExecutor(ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName), matchingMetaInfoHolder.getStoreEventIndex());
}
leftCollectionExecutor = buildCollectionExecutor(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
rightCollectionExecutor = buildCollectionExecutor(rightCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
return new OrCollectionExecutor(leftCollectionExecutor, rightCollectionExecutor, aCollectionExecutor);
}
} else if (collectionExpression instanceof NotCollectionExpression) {
ExpressionExecutor expressionExecutor = null;
switch(collectionExpression.getCollectionScope()) {
case NON:
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
return new NonCollectionExecutor(expressionExecutor);
case INDEXED_ATTRIBUTE:
case INDEXED_RESULT_SET:
case PRIMARY_KEY_ATTRIBUTE:
case PRIMARY_KEY_RESULT_SET:
case OPTIMISED_PRIMARY_KEY_OR_INDEXED_RESULT_SET:
ExhaustiveCollectionExecutor exhaustiveCollectionExecutor = null;
if (isFirst) {
exhaustiveCollectionExecutor = new ExhaustiveCollectionExecutor(ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName), matchingMetaInfoHolder.getStoreEventIndex());
}
CollectionExecutor notCollectionExecutor = buildCollectionExecutor(((NotCollectionExpression) collectionExpression).getCollectionExpression(), matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, isFirst, queryName);
return new NotCollectionExecutor(notCollectionExecutor, exhaustiveCollectionExecutor);
case PARTIAL_PRIMARY_KEY_RESULT_SET:
case EXHAUSTIVE:
if (isFirst) {
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
}
return new ExhaustiveCollectionExecutor(expressionExecutor, matchingMetaInfoHolder.getStoreEventIndex());
}
} else {
// Basic
ExpressionExecutor expressionExecutor = null;
if (collectionExpression.getCollectionScope() == NON) {
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
return new NonCollectionExecutor(expressionExecutor);
} else {
// EXHAUSTIVE
if (isFirst) {
expressionExecutor = ExpressionParser.parseExpression(collectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
}
return new ExhaustiveCollectionExecutor(expressionExecutor, matchingMetaInfoHolder.getStoreEventIndex());
}
}
throw new UnsupportedOperationException(collectionExpression.getClass().getName() + " not supported!");
}
use of org.wso2.siddhi.core.util.collection.expression.OrCollectionExpression 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!");
}
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