use of org.drools.core.base.mvel.MVELEnabledExpression in project drools by kiegroup.
the class RuleTerminalNode method setDeclarations.
public void setDeclarations(Map<String, Declaration> decls) {
if (rule.getSalience() instanceof MVELSalienceExpression) {
MVELSalienceExpression expr = (MVELSalienceExpression) rule.getSalience();
Declaration[] declrs = expr.getMVELCompilationUnit().getPreviousDeclarations();
this.salienceDeclarations = new Declaration[declrs.length];
int i = 0;
for (Declaration declr : declrs) {
this.salienceDeclarations[i++] = decls.get(declr.getIdentifier());
}
Arrays.sort(this.salienceDeclarations, SortDeclarations.instance);
}
if (rule.getEnabled() instanceof MVELEnabledExpression) {
MVELEnabledExpression expr = (MVELEnabledExpression) rule.getEnabled();
Declaration[] declrs = expr.getMVELCompilationUnit().getPreviousDeclarations();
this.enabledDeclarations = new Declaration[declrs.length];
int i = 0;
for (Declaration declr : declrs) {
this.enabledDeclarations[i++] = decls.get(declr.getIdentifier());
}
Arrays.sort(this.enabledDeclarations, SortDeclarations.instance);
}
if (rule.getTimer() instanceof BaseTimer) {
this.timerDeclarations = ((BaseTimer) rule.getTimer()).getTimerDeclarations(decls);
}
}
use of org.drools.core.base.mvel.MVELEnabledExpression in project drools by kiegroup.
the class MVELEnabledBuilder method build.
public void build(RuleBuildContext context) {
// pushing consequence LHS into the stack for variable resolution
context.getDeclarationResolver().pushOnBuildStack(context.getRule().getLhs());
try {
// This builder is re-usable in other dialects, so specify by name
MVELDialect dialect = (MVELDialect) context.getDialect("mvel");
Map<String, Class<?>> otherVars = new HashMap<String, Class<?>>();
otherVars.put("rule", RuleImpl.class);
Map<String, Declaration> declrs = context.getDeclarationResolver().getDeclarations(context.getRule());
AnalysisResult analysis = dialect.analyzeExpression(context, context.getRuleDescr(), context.getRuleDescr().getEnabled(), new BoundIdentifiers(DeclarationScopeResolver.getDeclarationClasses(declrs), context), otherVars);
final BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();
int i = usedIdentifiers.getDeclrClasses().keySet().size();
Declaration[] previousDeclarations = new Declaration[i];
i = 0;
for (String id : usedIdentifiers.getDeclrClasses().keySet()) {
previousDeclarations[i++] = declrs.get(id);
}
Arrays.sort(previousDeclarations, SortDeclarations.instance);
String exprStr = context.getRuleDescr().getEnabled();
exprStr = exprStr.substring(1, exprStr.length() - 1) + " ";
MVELCompilationUnit unit = dialect.getMVELCompilationUnit(exprStr, analysis, previousDeclarations, null, otherVars, context, "drools", KnowledgeHelper.class, false, MVELCompilationUnit.Scope.EXPRESSION);
MVELEnabledExpression expr = new MVELEnabledExpression(unit, dialect.getId());
context.getRule().setEnabled(KiePolicyHelper.isPolicyEnabled() ? new SafeEnabled(expr) : expr);
MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
data.addCompileable(context.getRule(), expr);
expr.compile(data, context.getRule());
} catch (final Exception e) {
DialectUtil.copyErrorLocation(e, context.getRuleDescr());
context.addError(new DescrBuildError(context.getParentDescr(), context.getRuleDescr(), null, "Unable to build expression for 'enabled' : " + e.getMessage() + " '" + context.getRuleDescr().getEnabled() + "'"));
}
}
Aggregations