@SuppressWarnings("unchecked")
private void verifyExec(
DslStep step,
ObjectSink node,
InternalWorkingMemory wm,
String[] cmd,
Map<String, Object> context)
throws AssertionError {
// check that the captor already exists:
String key = getCaptorKey(node, cmd);
ArgumentCaptor<InternalFactHandle> captor =
(ArgumentCaptor<InternalFactHandle>) context.get(key);
if (captor == null) {
// create the captor
verifyCount(step, node, wm, new String[] {"verify", cmd[1], "count", "-1"}, context);
captor = (ArgumentCaptor<InternalFactHandle>) context.get(key);
}
// create a map with all captured tuples as variables
Map<String, Object> vars = new HashMap<String, Object>();
int i = 0;
for (InternalFactHandle handle : captor.getAllValues()) {
vars.put("handle" + (i++), handle);
}
// add all context variables, just in case
vars.putAll(context);
// add the static imports for hamcrest matchers
ParserConfiguration pconf = new ParserConfiguration();
addStaticImports(pconf, CoreMatchers.class);
addStaticImports(pconf, JUnitMatchers.class);
// add import for JUnit assert class
pconf.addImport("Assert", Assert.class);
// compile MVEL expression
ParserContext mvelctx = new ParserContext(pconf);
String expression = cmd[3].replaceAll("h(\\d+)", "Handles[$1]");
try {
Serializable compiled = MVEL.compileExpression(expression, mvelctx);
// execute the expression
MVEL.executeExpression(compiled, vars);
} catch (PropertyAccessException e) {
String message;
if (e.getCause() instanceof InvocationTargetException) {
message = ((InvocationTargetException) e.getCause()).getTargetException().toString();
} else {
message = e.getMessage();
}
Assert.fail(
"[ERROR] line "
+ step.getLine()
+ " - Executing expression: '"
+ expression
+ "'\n"
+ message);
}
}
private void addStaticImports(ParserConfiguration pconf, Class<?> clazz) {
for (Method m : clazz.getMethods()) {
if (Modifier.isStatic(m.getModifiers())) {
pconf.addImport(m.getName(), m);
}
}
}
public void testStaticMethodsInInputsBug() {
String text = " getList( java.util.Formatter )";
ParserConfiguration pconf = new ParserConfiguration();
for (Method m : CoreConfidenceTests.StaticMethods.class.getMethods()) {
if (Modifier.isStatic(m.getModifiers())) {
pconf.addImport(m.getName(), m);
}
}
ParserContext pctx = new ParserContext(pconf);
pctx.setStrictTypeEnforcement(false);
pctx.setStrongTyping(false);
Map<String, Object> vars = new HashMap<String, Object>();
Serializable expr = MVEL.compileExpression(text, pctx);
List list = (List) MVEL.executeExpression(expr, null, vars);
assertEquals(Formatter.class, list.get(0));
assertEquals(0, pctx.getInputs().size());
}
public void testStaticMethodCallThrowsException() {
String text = " ( throwException( ) ) ";
ParserConfiguration pconf = new ParserConfiguration();
for (Method m : CoreConfidenceTests.StaticMethods.class.getMethods()) {
if (Modifier.isStatic(m.getModifiers())) {
pconf.addImport(m.getName(), m);
}
}
ParserContext pctx = new ParserContext(pconf);
pctx.setStrictTypeEnforcement(true);
pctx.setStrongTyping(true);
Map<String, Object> vars = new HashMap<String, Object>();
Serializable expr = MVEL.compileExpression(text, pctx);
try {
MVEL.executeExpression(expr);
fail("this should throw an exception");
} catch (Exception e) {
e.printStackTrace();
}
}
public static Object eval(String str, Map<String, Object> vars) {
ParserConfiguration pconf = new ParserConfiguration();
pconf.addPackageImport("org.kie.internal.task.api.model");
pconf.addPackageImport("org.jbpm.services.task");
pconf.addPackageImport("org.jbpm.services.task.impl.model");
pconf.addPackageImport("org.jbpm.services.task.query");
pconf.addPackageImport("org.jbpm.services.task.internals.lifecycle");
pconf.addImport(Status.class);
pconf.addImport(Allowed.class);
pconf.addPackageImport("java.util");
ParserContext context = new ParserContext(pconf);
Serializable s = MVEL.compileExpression(str.trim(), context);
if (vars != null) {
return MVELSafeHelper.getEvaluator().executeExpression(s, vars);
} else {
return MVELSafeHelper.getEvaluator().executeExpression(s);
}
}
/**
* Analyze an expression.
*
* @param expr The expression to analyze.
* @param availDecls Total set of declarations available.
* @return The <code>Set</code> of declarations used by the expression.
* @throws RecognitionException If an error occurs in the parser.
*/
public MVELAnalysisResult analyzeExpression(
final PackageBuildContext context,
final String expr,
final BoundIdentifiers availableIdentifiers,
final Map<String, Class<?>> localTypes) {
MVELAnalysisResult result = null;
if (expr.trim().length() > 0) {
MVEL.COMPILER_OPT_ALLOW_NAKED_METH_CALL = true;
MVELDialect dialect = (MVELDialect) context.getDialect("mvel");
// creating a reusable parser configuration
ParserConfiguration conf = new ParserConfiguration();
conf.setImports(dialect.getImports());
conf.setPackageImports((HashSet) dialect.getPackgeImports());
conf.setClassLoader(context.getPackageBuilder().getRootClassLoader());
// first compilation is for verification only
// @todo proper source file name
final ParserContext parserContext1 = new ParserContext(conf);
if (localTypes != null) {
for (Entry entry : localTypes.entrySet()) {
parserContext1.addInput((String) entry.getKey(), (Class) entry.getValue());
}
}
if (availableIdentifiers.getThisClass() != null) {
parserContext1.addInput("this", availableIdentifiers.getThisClass());
}
parserContext1.setStrictTypeEnforcement(false);
parserContext1.setStrongTyping(false);
parserContext1.setInterceptors(dialect.getInterceptors());
Class returnType = null;
try {
returnType = MVEL.analyze(expr, parserContext1);
} catch (Exception e) {
context
.getErrors()
.add(
new DescrBuildError(
context.getParentDescr(),
null,
null,
"Unable to Analyse Expression " + expr + ":\n" + e.getMessage()));
return null;
}
Set<String> requiredInputs = new HashSet();
requiredInputs.addAll(parserContext1.getInputs().keySet());
HashMap<String, Class<?>> variables =
(HashMap<String, Class<?>>) ((Map) parserContext1.getVariables());
// MVEL includes direct fields of context object in non-strict mode. so we need to strip those
if (availableIdentifiers.getThisClass() != null) {
for (Iterator<String> it = requiredInputs.iterator(); it.hasNext(); ) {
if (PropertyTools.getFieldOrAccessor(availableIdentifiers.getThisClass(), it.next())
!= null) {
it.remove();
}
}
}
// now, set the required input types and compile again
final ParserContext parserContext2 = new ParserContext(conf);
parserContext2.setStrictTypeEnforcement(true);
parserContext2.setStrongTyping(true);
parserContext2.setInterceptors(dialect.getInterceptors());
if (context.isTypesafe()) {
if (localTypes != null) {
for (Entry<String, Class<?>> entry : localTypes.entrySet()) {
parserContext2.addInput(entry.getKey(), entry.getValue());
}
}
for (String str : requiredInputs) {
Class cls = availableIdentifiers.getDeclarations().get(str);
if (cls != null) {
parserContext2.addInput(str, cls);
continue;
}
if (cls == null) {
cls = availableIdentifiers.getGlobals().get(str);
if (cls != null) {
parserContext2.addInput(str, cls);
continue;
}
}
if (cls == null) {
if (str.equals("drools")) {
parserContext2.addInput("drools", KnowledgeHelper.class);
} else if (str.equals("kcontext")) {
parserContext2.addInput("kcontext", RuleContext.class);
}
if (str.equals("rule")) {
parserContext2.addInput("rule", Rule.class);
}
}
}
if (availableIdentifiers.getThisClass() != null) {
parserContext2.addInput("this", availableIdentifiers.getThisClass());
}
try {
returnType = MVEL.analyze(expr, parserContext2);
} catch (Exception e) {
context
.getErrors()
.add(
new DescrBuildError(
context.getParentDescr(),
null,
null,
"Unable to Analyse Expression " + expr + ":\n" + e.getMessage()));
return null;
}
requiredInputs = new HashSet();
requiredInputs.addAll(parserContext2.getInputs().keySet());
requiredInputs.addAll(variables.keySet());
variables = (HashMap<String, Class<?>>) ((Map) parserContext2.getVariables());
}
result = analyze(requiredInputs, availableIdentifiers);
result.setReturnType(returnType);
result.setMvelVariables(variables);
} else {
result = analyze((Set<String>) Collections.EMPTY_SET, availableIdentifiers);
result.setMvelVariables(new HashMap<String, Class<?>>());
}
return result;
}
