@Test
public void PathClassOfTPathOfQString() {
assertEquals(
"variable.property",
Expressions.path(String.class, Expressions.path(Object.class, "variable"), "property")
.toString());
}
public void testLambdaCallsBinaryOp() {
// A parameter for the lambda expression.
ParameterExpression paramExpr = Expressions.parameter(Integer.TYPE, "arg");
// This expression represents a lambda expression
// that adds 1 to the parameter value.
FunctionExpression lambdaExpr =
Expressions.lambda(
Expressions.add(paramExpr, Expressions.constant(2)), Arrays.asList(paramExpr));
// Print out the expression.
String s = Expressions.toString(lambdaExpr);
assertEquals(
"new net.hydromatic.linq4j.function.Function1() {\n"
+ " public int apply(Integer arg) {\n"
+ " return arg + 2;\n"
+ " }\n"
+ " public Object apply(Object arg) {\n"
+ " return apply(\n"
+ " (Integer) arg);\n"
+ " }\n"
+ "}\n",
s);
// Compile and run the lambda expression.
// The value of the parameter is 1.
int n = (Integer) lambdaExpr.compile().dynamicInvoke(1);
// This code example produces the following output:
//
// arg => (arg +2)
// 3
assertEquals(3, n);
}
public void testCoalesceLong_OM() throws Exception {
String viewExpr =
"select coalesce(longBoxed, intBoxed, shortBoxed) as result"
+ " from "
+ SupportBean.class.getName()
+ ".win:length(1000)";
EPStatementObjectModel model = new EPStatementObjectModel();
model.setSelectClause(
SelectClause.create()
.add(Expressions.coalesce("longBoxed", "intBoxed", "shortBoxed"), "result"));
model.setFromClause(
FromClause.create(
FilterStream.create(SupportBean.class.getName())
.addView("win", "length", Expressions.constant(1000))));
model = (EPStatementObjectModel) SerializableObjectCopier.copy(model);
assertEquals(viewExpr, model.toEPL());
epService.initialize();
selectTestView = epService.getEPAdministrator().create(model);
selectTestView.addListener(testListener);
assertEquals(Long.class, selectTestView.getEventType().getPropertyType("result"));
runCoalesceLong();
}
public void testClassDecl() {
final NewExpression newExpression =
Expressions.new_(
Object.class,
Collections.<Expression>emptyList(),
Arrays.<MemberDeclaration>asList(
new FieldDeclaration(
Modifier.PUBLIC | Modifier.FINAL,
new ParameterExpression(String.class, "foo"),
Expressions.constant("bar")),
new ClassDeclaration(
Modifier.PUBLIC | Modifier.STATIC,
"MyClass",
null,
Collections.<Type>emptyList(),
Arrays.<MemberDeclaration>asList(
new FieldDeclaration(
0, new ParameterExpression(int.class, "x"), Expressions.constant(0)))),
new FieldDeclaration(0, new ParameterExpression(int.class, "i"), null)));
assertEquals(
"new Object(){\n"
+ " public final String foo = \"bar\";\n"
+ " public static class MyClass {\n"
+ " int x = 0;\n"
+ " }\n"
+ " int i;\n"
+ "}",
Expressions.toString(newExpression));
}
@Override
public Expression accept(Visitor visitor) {
visitor = visitor.preVisit(this);
final List<Expression> arguments = Expressions.acceptExpressions(this.arguments, visitor);
final List<MemberDeclaration> memberDeclarations =
Expressions.acceptMemberDeclarations(this.memberDeclarations, visitor);
return visitor.visit(this, arguments, memberDeclarations);
}
/**
* Gets the expression for an input and counts it.
*
* @param index Input ordinal
* @return Expression to which an input should be translated
*/
private Expression getInput(int index) {
Slot slot = inputSlots.get(index);
if (list == null) {
slot.count++;
} else {
if (slot.count > 1 && slot.parameterExpression == null) {
slot.parameterExpression = Expressions.parameter(slot.expression.type, "current" + index);
list.add(Expressions.declare(Modifier.FINAL, slot.parameterExpression, slot.expression));
}
}
return slot.parameterExpression != null ? slot.parameterExpression : slot.expression;
}
private Expression translate0(RexNode expr) {
if (expr instanceof RexInputRef) {
// TODO: multiple inputs, e.g. joins
final Expression input = getInput(0);
final int index = ((RexInputRef) expr).getIndex();
final List<RelDataTypeField> fields = program.getInputRowType().getFieldList();
final RelDataTypeField field = fields.get(index);
if (fields.size() == 1) {
return input;
} else if (input.getType() == Object[].class) {
return Expressions.convert_(
Expressions.arrayIndex(input, Expressions.constant(field.getIndex())),
Types.box(JavaRules.EnumUtil.javaClass(typeFactory, field.getType())));
} else {
return Expressions.field(input, field.getName());
}
}
if (expr instanceof RexLocalRef) {
return translate(program.getExprList().get(((RexLocalRef) expr).getIndex()));
}
if (expr instanceof RexLiteral) {
return Expressions.constant(
((RexLiteral) expr).getValue(), typeFactory.getJavaClass(expr.getType()));
}
if (expr instanceof RexCall) {
final RexCall call = (RexCall) expr;
final SqlOperator operator = call.getOperator();
final ExpressionType expressionType = SQL_TO_LINQ_OPERATOR_MAP.get(operator);
if (expressionType != null) {
switch (operator.getSyntax()) {
case Binary:
return Expressions.makeBinary(
expressionType, translate(call.getOperands()[0]), translate(call.getOperands()[1]));
case Postfix:
case Prefix:
return Expressions.makeUnary(expressionType, translate(call.getOperands()[0]));
default:
throw new RuntimeException("unknown syntax " + operator.getSyntax());
}
}
Method method = SQL_OP_TO_JAVA_METHOD_MAP.get(operator);
if (method != null) {
List<Expression> exprs = translateList(Arrays.asList(call.operands));
return !Modifier.isStatic(method.getModifiers())
? Expressions.call(exprs.get(0), method, exprs.subList(1, exprs.size()))
: Expressions.call(method, exprs);
}
switch (expr.getKind()) {
default:
throw new RuntimeException("cannot translate expression " + expr);
}
}
throw new RuntimeException("cannot translate expression " + expr);
}
/** Returns the expression for a sub-schema. */
public static Expression subSchemaExpression(Schema schema, String name, Class type) {
// (Type) schemaExpression.getSubSchema("name")
Expression call =
Expressions.call(
schema.getExpression(),
BuiltinMethod.SCHEMA_GET_SUB_SCHEMA.method,
Expressions.constant(name));
// CHECKSTYLE: IGNORE 2
//noinspection unchecked
if (false && type != null && !type.isAssignableFrom(Schema.class)) {
return unwrap(call, type);
}
return call;
}
public static void setRHSValue(
boolean isDecl,
Stmt decl_or_assgn,
TIRAbstractAssignStmt node,
boolean isScalar,
IRx10ASTGenerator target) {
if (isDecl) {
((DeclStmt) decl_or_assgn).setRHS(Expressions.makeIRx10Exp(node.getRHS(), isScalar, target));
} else {
((AssignStmt) decl_or_assgn)
.setRHS(Expressions.makeIRx10Exp(node.getRHS(), isScalar, target));
}
}
@Test
public void Serialization() throws IOException, ClassNotFoundException {
StringPath expr = Expressions.stringPath("str");
metadata.addJoin(JoinType.DEFAULT, expr);
metadata.addFlag(new QueryFlag(Position.AFTER_FILTERS, ""));
metadata.addGroupBy(expr);
metadata.addHaving(expr.isEmpty());
// metadata.getJoins().get(0).addFlag(new JoinFlag(""));
metadata.addJoinCondition(expr.isEmpty());
metadata.addOrderBy(expr.asc());
metadata.setProjection(expr);
metadata.addWhere(expr.isEmpty());
QueryMetadata metadata2 = Serialization.serialize(metadata);
assertEquals(metadata.getFlags(), metadata2.getFlags());
assertEquals(metadata.getGroupBy().get(0), metadata2.getGroupBy().get(0));
assertEquals(metadata.getGroupBy(), metadata2.getGroupBy());
assertEquals(metadata.getHaving(), metadata2.getHaving());
assertEquals(metadata.getJoins(), metadata2.getJoins());
assertEquals(metadata.getModifiers(), metadata2.getModifiers());
assertEquals(metadata.getOrderBy(), metadata2.getOrderBy());
assertEquals(metadata.getParams(), metadata2.getParams());
assertEquals(metadata.getProjection(), metadata2.getProjection());
assertEquals(metadata.getWhere(), metadata2.getWhere());
}
@Override
protected PreparedExecution implement(
RelDataType rowType,
RelNode rootRel,
SqlKind sqlKind,
ClassDeclaration decl,
Argument[] args) {
RelDataType resultType = rootRel.getRowType();
boolean isDml = sqlKind.belongsTo(SqlKind.DML);
javaCompiler = createCompiler();
EnumerableRelImplementor relImplementor =
getRelImplementor(rootRel.getCluster().getRexBuilder());
BlockExpression expr = relImplementor.implementRoot((EnumerableRel) rootRel);
ParameterExpression root0 = Expressions.parameter(DataContext.class, "root0");
String s =
Expressions.toString(
Blocks.create(
Expressions.declare(
Modifier.FINAL, (ParameterExpression) schema.getExpression(), root0),
expr),
false);
final Executable executable;
try {
executable =
(Executable)
ExpressionEvaluator.createFastScriptEvaluator(
s, Executable.class, new String[] {root0.name});
} catch (Exception e) {
throw Helper.INSTANCE.wrap("Error while compiling generated Java code:\n" + s, e);
}
if (timingTracer != null) {
timingTracer.traceTime("end codegen");
}
if (timingTracer != null) {
timingTracer.traceTime("end compilation");
}
return new PreparedExecution(
null, rootRel, resultType, isDml, mapTableModOp(isDml, sqlKind), null) {
public Object execute() {
return executable.execute(schema);
}
};
}
public void testUnfilteredStreamPrior_OM() throws Exception {
EPStatementObjectModel subquery = new EPStatementObjectModel();
subquery.setSelectClause(SelectClause.create().add(Expressions.prior(0, "id")));
subquery.setFromClause(
FromClause.create(
FilterStream.create("S1").addView("win", "length", Expressions.constant(1000))));
EPStatementObjectModel model = new EPStatementObjectModel();
model.setSelectClause(SelectClause.create().add(Expressions.subquery(subquery), "idS1"));
model.setFromClause(FromClause.create(FilterStream.create("S0")));
model = (EPStatementObjectModel) SerializableObjectCopier.copy(model);
String stmtText = "select (select prior(0, id) from S1.win:length(1000)) as idS1 from S0";
assertEquals(stmtText, model.toEPL());
EPStatement stmt = epService.getEPAdministrator().create(model);
runUnfilteredStreamPrior(stmt);
}
public void testCompile() throws NoSuchMethodException {
// Creating a parameter for the expression tree.
ParameterExpression param = Expressions.parameter(String.class);
// Creating an expression for the method call and specifying its
// parameter.
MethodCallExpression methodCall =
Expressions.call(Integer.class, "valueOf", Collections.<Expression>singletonList(param));
// The following statement first creates an expression tree,
// then compiles it, and then runs it.
int x =
Expressions.<Function1<String, Integer>>lambda(
methodCall, new ParameterExpression[] {param})
.getFunction()
.apply("1234");
assertEquals(1234, x);
}
public void testWriteArray() {
assertEquals(
"1 + integers[2 + index]",
Expressions.toString(
Expressions.add(
Expressions.constant(1),
Expressions.arrayIndex(
Expressions.variable(int[].class, "integers"),
Expressions.add(
Expressions.constant(2), Expressions.variable(int.class, "index"))))));
}
/** Returns the expression to access a table within a schema. */
public static Expression tableExpression(
Schema schema, Type elementType, String tableName, Class clazz) {
final MethodCallExpression expression;
if (Table.class.isAssignableFrom(clazz)) {
expression =
Expressions.call(
schema.getExpression(),
BuiltinMethod.SCHEMA_GET_TABLE.method,
Expressions.constant(tableName));
} else {
expression =
Expressions.call(
BuiltinMethod.SCHEMAS_QUERYABLE.method,
DataContext.ROOT,
schema.getExpression(),
Expressions.constant(elementType),
Expressions.constant(tableName));
}
return Types.castIfNecessary(clazz, expression);
}
@Test
public void roundtrip() throws Exception {
Path<?> path = ExpressionUtils.path(Object.class, "entity");
SimplePath<?> path2 = Expressions.path(Object.class, "entity");
assertEquals(path, serialize(path));
assertEquals(path2, serialize(path2));
assertEquals(path2.isNull(), serialize(path2.isNull()));
assertEquals(path.hashCode(), serialize(path).hashCode());
assertEquals(path2.hashCode(), serialize(path2).hashCode());
assertEquals(path2.isNull().hashCode(), serialize(path2.isNull()).hashCode());
}
private Expression translate(RexNode expr) {
Slot slot = map.get(expr);
if (slot == null) {
Expression expression = translate0(expr);
assert expression != null;
final ParameterExpression parameter;
if (!inlineRexSet.contains(expr) && !(expr instanceof RexLocalRef)) {
parameter = Expressions.parameter(expression.getType(), "v" + map.size());
} else {
parameter = null;
}
slot = new Slot(parameter, expression);
if (parameter != null && list != null) {
list.add(Expressions.declare(Modifier.FINAL, slot.parameterExpression, slot.expression));
}
map.put(expr, slot);
}
slot.count++;
return slot.parameterExpression != null ? slot.parameterExpression : slot.expression;
}
public void testWriteConstant() {
// primitives
assertEquals(
"new int[] {\n" + " 1,\n" + " 2,\n" + " -1}",
Expressions.toString(Expressions.constant(new int[] {1, 2, -1})));
// objects and nulls
assertEquals(
"new String[] {\n" + " \"foo\",\n" + " null}",
Expressions.toString(Expressions.constant(new String[] {"foo", null})));
// automatically call constructor if it matches fields
assertEquals(
"new net.hydromatic.linq4j.test.Linq4jTest.Employee[] {\n"
+ " new net.hydromatic.linq4j.test.Linq4jTest.Employee(\n"
+ " 100,\n"
+ " \"Fred\",\n"
+ " 10),\n"
+ " new net.hydromatic.linq4j.test.Linq4jTest.Employee(\n"
+ " 110,\n"
+ " \"Bill\",\n"
+ " 30),\n"
+ " new net.hydromatic.linq4j.test.Linq4jTest.Employee(\n"
+ " 120,\n"
+ " \"Eric\",\n"
+ " 10),\n"
+ " new net.hydromatic.linq4j.test.Linq4jTest.Employee(\n"
+ " 130,\n"
+ " \"Janet\",\n"
+ " 10)}",
Expressions.toString(Expressions.constant(Linq4jTest.emps)));
}
public void testVariantOneOMToStmt() throws Exception {
EPStatementObjectModel model = new EPStatementObjectModel();
model.setInsertInto(InsertIntoClause.create("Event_1", "delta", "product"));
model.setSelectClause(
SelectClause.create()
.add(Expressions.minus("intPrimitive", "intBoxed"), "deltaTag")
.add(Expressions.multiply("intPrimitive", "intBoxed"), "productTag"));
model.setFromClause(
FromClause.create(
FilterStream.create(SupportBean.class.getName())
.addView(View.create("win", "length", Expressions.constant(100)))));
model = (EPStatementObjectModel) SerializableObjectCopier.copy(model);
EPStatement stmt = runAsserts(null, model);
String epl =
"insert into Event_1(delta, product) "
+ "select intPrimitive - intBoxed as deltaTag, intPrimitive * intBoxed as productTag "
+ "from "
+ SupportBean.class.getName()
+ ".win:length(100)";
assertEquals(epl, model.toEPL());
assertEquals(epl, stmt.getText());
}
public void testLambdaCallsTwoArgMethod() throws NoSuchMethodException {
// A parameter for the lambda expression.
ParameterExpression paramS = Expressions.parameter(String.class, "s");
ParameterExpression paramBegin = Expressions.parameter(Integer.TYPE, "begin");
ParameterExpression paramEnd = Expressions.parameter(Integer.TYPE, "end");
// This expression represents a lambda expression
// that adds 1 to the parameter value.
FunctionExpression lambdaExpr =
Expressions.lambda(
Expressions.call(
paramS,
String.class.getMethod("substring", Integer.TYPE, Integer.TYPE),
paramBegin,
paramEnd),
paramS,
paramBegin,
paramEnd);
// Compile and run the lambda expression.
String s = (String) lambdaExpr.compile().dynamicInvoke("hello world", 3, 7);
assertEquals("lo w", s);
}
public RexNode toRex(Expression expression) {
switch (expression.getNodeType()) {
case MemberAccess:
return rexBuilder.makeFieldAccess(
toRex(((MemberExpression) expression).expression),
((MemberExpression) expression).field.getName());
case GreaterThan:
return binary(expression, SqlStdOperatorTable.greaterThanOperator);
case LessThan:
return binary(expression, SqlStdOperatorTable.lessThanOperator);
case Parameter:
return parameter((ParameterExpression) expression);
case Call:
MethodCallExpression call = (MethodCallExpression) expression;
SqlOperator operator = RexToLixTranslator.JAVA_TO_SQL_METHOD_MAP.get(call.method);
if (operator != null) {
return rexBuilder.makeCall(
operator,
toRex(
Expressions.<Expression>list()
.appendIfNotNull(call.targetExpression)
.appendAll(call.expressions)));
}
throw new RuntimeException("Could translate call to method " + call.method);
case Constant:
final ConstantExpression constant = (ConstantExpression) expression;
Object value = constant.value;
if (value instanceof Number) {
Number number = (Number) value;
if (value instanceof Double || value instanceof Float) {
return rexBuilder.makeApproxLiteral(BigDecimal.valueOf(number.doubleValue()));
} else if (value instanceof BigDecimal) {
return rexBuilder.makeExactLiteral((BigDecimal) value);
} else {
return rexBuilder.makeExactLiteral(BigDecimal.valueOf(number.longValue()));
}
} else if (value instanceof Boolean) {
return rexBuilder.makeLiteral((Boolean) value);
} else {
return rexBuilder.makeLiteral(constant.toString());
}
default:
throw new UnsupportedOperationException(
"unknown expression type " + expression.getNodeType() + " " + expression);
}
}
@Test
public void expressions() throws Exception {
Map<Class<?>, Object> args = Maps.newHashMap();
args.put(Object.class, "obj");
args.put(BeanPath.class, new EntityPathBase<Object>(Object.class, "obj"));
args.put(Class.class, Integer.class);
args.put(Class[].class, new Class<?>[] {Object.class, Object.class});
args.put(java.util.Date.class, new java.util.Date(0));
args.put(java.sql.Date.class, new java.sql.Date(0));
args.put(java.sql.Time.class, new java.sql.Time(0));
args.put(java.sql.Timestamp.class, new java.sql.Timestamp(0));
args.put(Expression.class, Expressions.enumPath(Gender.class, "e"));
args.put(
Expression[].class,
new Expression<?>[] {Expressions.enumPath(Gender.class, "e"), Expressions.stringPath("s")});
args.put(FactoryExpression.class, Projections.tuple(Expressions.stringPath("str")));
args.put(GroupExpression.class, GroupBy.avg(Expressions.numberPath(Integer.class, "num")));
args.put(Number.class, 1);
args.put(Operator.class, Ops.AND);
args.put(Path.class, Expressions.stringPath("str"));
args.put(PathBuilderValidator.class, PathBuilderValidator.DEFAULT);
args.put(PathMetadata.class, PathMetadataFactory.forVariable("obj"));
args.put(PathInits.class, PathInits.DEFAULT);
args.put(Predicate.class, Expressions.path(Object.class, "obj").isNull());
args.put(QueryMetadata.class, new DefaultQueryMetadata());
args.put(String.class, "obj");
Reflections reflections = new Reflections();
Set<Class<? extends Expression>> types = reflections.getSubTypesOf(Expression.class);
for (Class<?> type : types) {
if (!type.isInterface()
&& !type.isMemberClass()
&& !Modifier.isAbstract(type.getModifiers())) {
for (Constructor<?> c : type.getConstructors()) {
Object[] parameters = new Object[c.getParameterTypes().length];
for (int i = 0; i < c.getParameterTypes().length; i++) {
parameters[i] =
Objects.requireNonNull(
args.get(c.getParameterTypes()[i]), c.getParameterTypes()[i].getName());
}
c.setAccessible(true);
Object o = c.newInstance(parameters);
assertEquals(o, Serialization.serialize(o));
}
}
}
}
public void testBlockBuilder() {
BlockBuilder statements = new BlockBuilder();
Expression one = statements.append("one", Expressions.constant(1));
Expression two = statements.append("two", Expressions.constant(2));
Expression three = statements.append("three", Expressions.add(one, two));
Expression six = statements.append("six", Expressions.multiply(three, two));
Expression eighteen = statements.append("eighteen", Expressions.multiply(three, six));
statements.add(Expressions.return_(null, eighteen));
assertEquals(
"{\n"
+ " final int three = 1 + 2;\n"
+ " final int six = three * 2;\n"
+ " final int eighteen = three * six;\n"
+ " return eighteen;\n"
+ "}\n",
Expressions.toString(statements.toBlock()));
}
public void testBlockBuilder2() {
BlockBuilder statements = new BlockBuilder();
Expression element = statements.append("element", Expressions.constant(null));
Expression comparator =
statements.append("comparator", Expressions.constant(null, Comparator.class));
Expression treeSet =
statements.append("treeSet", Expressions.new_(TreeSet.class, Arrays.asList(comparator)));
statements.add(Expressions.return_(null, Expressions.call(treeSet, "add", element)));
assertEquals(
"{\n"
+ " final java.util.Comparator comparator = null;\n"
+ " final java.util.TreeSet treeSet = new java.util.TreeSet(\n"
+ " comparator);\n"
+ " return treeSet.add(null);\n"
+ "}\n",
Expressions.toString(statements.toBlock()));
}
@Override
public RecordValue variable(GimpleVarDecl decl, VarAllocator allocator) {
JLValue instance =
allocator.reserve(decl.getName(), layout.getType(), new RecordConstructor(this));
if (isUnitPointer()) {
// If we are using the RecordUnitPtr strategy, then the record value is also it's address
return new RecordValue(instance, new RecordUnitPtr(instance));
} else if (decl.isAddressable()) {
JLValue unitArray =
allocator.reserveUnitArray(
decl.getName(), layout.getType(), Optional.of((JExpr) instance));
FatPtrPair address = new FatPtrPair(new RecordClassValueFunction(this), unitArray);
JExpr value = Expressions.elementAt(address.getArray(), 0);
return new RecordValue(value, address);
} else {
return new RecordValue(instance);
}
}
/* (non-Javadoc)
* @see Expression#evaluate(IVariablePool)
*/
public EvaluationResult evaluate(IEvaluationContext context) throws CoreException {
if (fTypeName == null) return EvaluationResult.FALSE;
Object var = context.getDefaultVariable();
Object adapted = null;
IAdapterManager manager = Platform.getAdapterManager();
if (Expressions.isInstanceOf(var, fTypeName)) {
adapted = var;
} else {
if (manager.hasAdapter(var, fTypeName)) {
adapted = manager.getAdapter(var, fTypeName);
} else {
// if the adapter manager doesn't have an adapter contributed,
// try to see if the variable itself implements IAdaptable
if (var instanceof IAdaptable) {
try {
Class typeClazz = Class.forName(fTypeName, false, var.getClass().getClassLoader());
adapted = ((IAdaptable) var).getAdapter(typeClazz);
} catch (ClassNotFoundException e) {
}
}
if (adapted == null) {
// all attempts failed, return false
return EvaluationResult.FALSE;
}
}
}
// the adapted result is null but hasAdapter returned true check
// if the adapter is loaded.
if (adapted == null) {
if (manager.queryAdapter(var, fTypeName) == IAdapterManager.NOT_LOADED) {
return EvaluationResult.NOT_LOADED;
} else {
return EvaluationResult.FALSE;
}
}
return evaluateAnd(new DefaultVariable(context, adapted));
}
@Test
public void testSODA() {
// should say fieldsTypes, maybe with object/component prefix
Map<String, Object> eventTypes = new HashMap<>();
eventTypes.put(LITERAL_SYMBOL, String.class);
eventTypes.put(LITERAL_PRICE, Integer.class);
EPStatementObjectModel model = new EPStatementObjectModel();
model.setInsertInto(InsertIntoClause.create(LITERAL_RETURN_OBJ));
model.setSelectClause(
SelectClause.create().add(Expressions.avg(LITERAL_PRICE), LITERAL_AVG).add(LITERAL_PRICE));
Filter filter = Filter.create("quotes_default", Expressions.eq(LITERAL_SYMBOL, "A"));
model.setFromClause(
FromClause.create(
FilterStream.create(filter).addView("win", "length", Expressions.constant(2))));
model.setHavingClause(
Expressions.gt(Expressions.avg(LITERAL_PRICE), Expressions.constant(60.0)));
TopologyBuilder builder = new TopologyBuilder();
builder.setSpout(LITERAL_QUOTES, new RandomSentenceSpout());
builder
.setBolt(
LITERAL_ESPER,
(new EsperBolt())
.addEventTypes(eventTypes)
.addOutputTypes(
Collections.singletonMap(
LITERAL_RETURN_OBJ, Arrays.asList(LITERAL_AVG, LITERAL_PRICE)))
.addObjectStatemens(Collections.singleton(model)))
.shuffleGrouping(LITERAL_QUOTES);
builder.setBolt("print", new PrinterBolt()).shuffleGrouping(LITERAL_ESPER, LITERAL_RETURN_OBJ);
Config conf = new Config();
LocalCluster cluster = new LocalCluster();
cluster.submitTopology("test", conf, builder.createTopology());
Utils.sleep(10000);
cluster.shutdown();
assertEquals(resultSODA.get(100), new Double(75.0));
assertEquals(resultSODA.get(50), new Double(75.0));
}
public void testMinMaxWindowStats_OM() throws Exception {
String viewExpr =
"select max(longBoxed, intBoxed) as myMax, "
+ "max(longBoxed, intBoxed, shortBoxed) as myMaxEx, "
+ "min(longBoxed, intBoxed) as myMin, "
+ "min(longBoxed, intBoxed, shortBoxed) as myMinEx"
+ " from "
+ SupportBean.class.getName()
+ ".win:length(3)";
EPStatementObjectModel model = new EPStatementObjectModel();
model.setSelectClause(
SelectClause.create()
.add(Expressions.max("longBoxed", "intBoxed"), "myMax")
.add(
Expressions.max(
Expressions.property("longBoxed"),
Expressions.property("intBoxed"),
Expressions.property("shortBoxed")),
"myMaxEx")
.add(Expressions.min("longBoxed", "intBoxed"), "myMin")
.add(
Expressions.min(
Expressions.property("longBoxed"),
Expressions.property("intBoxed"),
Expressions.property("shortBoxed")),
"myMinEx"));
model.setFromClause(
FromClause.create(
FilterStream.create(SupportBean.class.getName())
.addView("win", "length", Expressions.constant(3))));
model = (EPStatementObjectModel) SerializableObjectCopier.copy(model);
assertEquals(viewExpr, model.toEPL());
selectTestView = epService.getEPAdministrator().create(model);
selectTestView.addListener(testListener);
testListener.reset();
runMinMaxWindowStats();
}
public AdaptExpression(Element element) throws CoreException {
fTypeName = element.getAttribute(ATT_TYPE);
Expressions.checkAttribute(ATT_TYPE, fTypeName.length() > 0 ? fTypeName : null);
}
public AdaptExpression(IConfigurationElement configElement) throws CoreException {
fTypeName = configElement.getAttribute(ATT_TYPE);
Expressions.checkAttribute(ATT_TYPE, fTypeName);
}
