use of io.siddhi.core.executor.ExpressionExecutor in project siddhi by wso2.
the class SortWindowProcessor method init.
@Override
protected StateFactory init(ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, SiddhiQueryContext siddhiQueryContext) {
if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.INT) {
lengthToKeep = Integer.parseInt(String.valueOf(((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue()));
} else {
throw new UnsupportedOperationException("The first parameter should be an integer");
}
parameterInfo = new ArrayList<Object[]>();
eventComparator = new EventComparator();
for (int i = 1, parametersLength = attributeExpressionExecutors.length; i < parametersLength; i++) {
if (!(attributeExpressionExecutors[i] instanceof VariableExpressionExecutor)) {
throw new UnsupportedOperationException("Required a variable, but found a string parameter");
} else {
ExpressionExecutor variableExpressionExecutor = attributeExpressionExecutors[i];
int order;
String nextParameter;
if (i + 1 < parametersLength && attributeExpressionExecutors[i + 1].getReturnType() == Attribute.Type.STRING) {
nextParameter = (String) ((ConstantExpressionExecutor) attributeExpressionExecutors[i + 1]).getValue();
if (nextParameter.equalsIgnoreCase(DESC)) {
order = -1;
i++;
} else if (nextParameter.equalsIgnoreCase(ASC)) {
order = 1;
i++;
} else {
throw new UnsupportedOperationException("Parameter string literals should only be \"asc\" or " + "\"desc\"");
}
} else {
// assigning the default order: "asc"
order = 1;
}
parameterInfo.add(new Object[] { variableExpressionExecutor, order });
}
}
return () -> new WindowState();
}
use of io.siddhi.core.executor.ExpressionExecutor in project siddhi by wso2.
the class EventTestCase method testConditionExpressionExecutors.
@Test
public void testConditionExpressionExecutors() {
// StreamDefinition streamDefinition = StreamDefinition.id("cseEventStream").attribute("symbol", Attribute
// .Type.STRING).attribute("price", Attribute.Type.FLOAT).attribute("volume", Attribute.Type.INT);
VariableExpressionExecutor priceVariableExpressionExecutor = new VariableExpressionExecutor(new Attribute("price", Attribute.Type.FLOAT), 0, 0);
priceVariableExpressionExecutor.setPosition(new int[] { 0, SiddhiConstants.UNKNOWN_STATE, SiddhiConstants.OUTPUT_DATA_INDEX, 1 });
VariableExpressionExecutor volumeVariableExpressionExecutor = new VariableExpressionExecutor(new Attribute("volume", Attribute.Type.INT), 0, 0);
volumeVariableExpressionExecutor.setPosition(new int[] { 0, SiddhiConstants.UNKNOWN_STATE, SiddhiConstants.OUTPUT_DATA_INDEX, 2 });
ExpressionExecutor compareLessThanExecutor = new LessThanCompareConditionExpressionExecutorFloatFloat(new ConstantExpressionExecutor(10f, Attribute.Type.FLOAT), priceVariableExpressionExecutor);
ExpressionExecutor compareGreaterThanExecutor = new GreaterThanCompareConditionExpressionExecutorIntInt(new ConstantExpressionExecutor(10, Attribute.Type.INT), volumeVariableExpressionExecutor);
ExpressionExecutor andExecutor = new AndConditionExpressionExecutor(compareLessThanExecutor, compareGreaterThanExecutor);
int count = 0;
for (int i = 0; i < 3; i++) {
StreamEvent event = new StreamEvent(0, 0, 3);
event.setOutputData(new Object[] { "WSO2", i * 11f, 5 });
if ((Boolean) andExecutor.execute(event)) {
count++;
}
}
AssertJUnit.assertEquals("Two events should pass through executor", 2, count);
}
use of io.siddhi.core.executor.ExpressionExecutor in project siddhi by wso2.
the class EventTestCase method testExpressionExecutors.
@Test
public void testExpressionExecutors() {
// StreamDefinition streamDefinition = StreamDefinition.id("cseEventStream").attribute("symbol", Attribute
// .Type.STRING).attribute("price", Attribute.Type.FLOAT).attribute("volume", Attribute.Type.INT);
VariableExpressionExecutor priceVariableExpressionExecutor = new VariableExpressionExecutor(new Attribute("price", Attribute.Type.FLOAT), 0, 0);
priceVariableExpressionExecutor.setPosition(new int[] { 0, SiddhiConstants.UNKNOWN_STATE, SiddhiConstants.OUTPUT_DATA_INDEX, 1 });
ExpressionExecutor addExecutor = new AddExpressionExecutorFloat(new ConstantExpressionExecutor(10f, Attribute.Type.FLOAT), priceVariableExpressionExecutor);
StreamEvent event = new StreamEvent(0, 0, 3);
event.setOutputData(new Object[] { "WSO2", 10f, 5 });
AssertJUnit.assertEquals("Result of adding should be 20.0", 20f, addExecutor.execute(event));
}
Aggregations