Examples with BoundIdentifiers org.drools.compiler.compiler.BoundIdentifiers used on opensource projects

Example 16 with BoundIdentifiers

use of org.drools.compiler.compiler.BoundIdentifiers in project drools by kiegroup.

the class JavaRuleBuilderHelper method createJavaAnalysisResult.

public static JavaAnalysisResult createJavaAnalysisResult(final RuleBuildContext context, String consequenceName, Map<String, Declaration> decls) {
    final RuleDescr ruleDescr = context.getRuleDescr();
    BoundIdentifiers bindings = new BoundIdentifiers(DeclarationScopeResolver.getDeclarationClasses(decls), context, Collections.EMPTY_MAP, KnowledgeHelper.class);
    String consequenceStr = (RuleImpl.DEFAULT_CONSEQUENCE_NAME.equals(consequenceName)) ? (String) ruleDescr.getConsequence() : (String) ruleDescr.getNamedConsequences().get(consequenceName);
    consequenceStr = consequenceStr + "\n";
    return (JavaAnalysisResult) context.getDialect().analyzeBlock(context, ruleDescr, consequenceStr, bindings);
}

Example 17 with BoundIdentifiers

use of org.drools.compiler.compiler.BoundIdentifiers in project drools by kiegroup.

the class MVELSalienceBuilder method build.

public void build(RuleBuildContext context) {
    boolean typesafe = context.isTypesafe();
    // 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, Declaration> decls = context.getDeclarationResolver().getDeclarations(context.getRule());
        MVELAnalysisResult analysis = (MVELAnalysisResult) dialect.analyzeExpression(context, context.getRuleDescr(), context.getRuleDescr().getSalience(), new BoundIdentifiers(DeclarationScopeResolver.getDeclarationClasses(decls), context));
        context.setTypesafe(analysis.isTypesafe());
        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++] = decls.get(id);
        }
        Arrays.sort(previousDeclarations, SortDeclarations.instance);
        MVELCompilationUnit unit = dialect.getMVELCompilationUnit(context.getRuleDescr().getSalience(), analysis, previousDeclarations, null, null, context, "drools", KnowledgeHelper.class, false, MVELCompilationUnit.Scope.EXPRESSION);
        MVELSalienceExpression expr = new MVELSalienceExpression(unit, dialect.getId());
        context.getRule().setSalience(KiePolicyHelper.isPolicyEnabled() ? new SafeSalience(expr) : expr);
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
        data.addCompileable(context.getRule(), expr);
        expr.compile(data, context.getRule());
    } catch (final Exception e) {
        copyErrorLocation(e, context.getRuleDescr());
        context.addError(new DescrBuildError(context.getParentDescr(), context.getRuleDescr(), null, "Unable to build expression for 'salience' : " + e.getMessage() + "'" + context.getRuleDescr().getSalience() + "'"));
    } finally {
        context.setTypesafe(typesafe);
    }
}

Example 18 with BoundIdentifiers

use of org.drools.compiler.compiler.BoundIdentifiers in project drools by kiegroup.

the class PatternBuilder method getDeclarationsForReturnValue.

private Declaration[] getDeclarationsForReturnValue(RuleBuildContext context, RelationalExprDescr relDescr, String operator, String value2) {
    Pattern pattern = (Pattern) context.getDeclarationResolver().peekBuildStack();
    ReturnValueRestrictionDescr returnValueRestrictionDescr = new ReturnValueRestrictionDescr(operator, relDescr, value2);
    AnalysisResult analysis = context.getDialect().analyzeExpression(context, returnValueRestrictionDescr, returnValueRestrictionDescr.getContent(), new BoundIdentifiers(pattern, context, null, pattern.getObjectType().getClassType()));
    if (analysis == null) {
        // something bad happened
        return null;
    }
    final BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();
    final List<Declaration> tupleDeclarations = new ArrayList<Declaration>();
    final List<Declaration> factDeclarations = new ArrayList<Declaration>();
    for (String id : usedIdentifiers.getDeclrClasses().keySet()) {
        Declaration decl = context.getDeclarationResolver().getDeclaration(id);
        if (decl.getPattern() == pattern) {
            factDeclarations.add(decl);
        } else {
            tupleDeclarations.add(decl);
        }
    }
    createImplicitBindings(context, pattern, analysis.getNotBoundedIdentifiers(), usedIdentifiers, factDeclarations);
    final Declaration[] previousDeclarations = tupleDeclarations.toArray(new Declaration[tupleDeclarations.size()]);
    final Declaration[] localDeclarations = factDeclarations.toArray(new Declaration[factDeclarations.size()]);
    Arrays.sort(previousDeclarations, SortDeclarations.instance);
    Arrays.sort(localDeclarations, SortDeclarations.instance);
    final String[] requiredGlobals = usedIdentifiers.getGlobals().keySet().toArray(new String[usedIdentifiers.getGlobals().size()]);
    Declaration[] requiredDeclarations = new Declaration[previousDeclarations.length + localDeclarations.length];
    System.arraycopy(previousDeclarations, 0, requiredDeclarations, 0, previousDeclarations.length);
    System.arraycopy(localDeclarations, 0, requiredDeclarations, previousDeclarations.length, localDeclarations.length);
    Declaration[] declarations = new Declaration[requiredDeclarations.length + requiredGlobals.length];
    int i = 0;
    for (Declaration requiredDeclaration : requiredDeclarations) {
        declarations[i++] = requiredDeclaration;
    }
    for (String requiredGlobal : requiredGlobals) {
        declarations[i++] = context.getDeclarationResolver().getDeclaration(requiredGlobal);
    }
    return declarations;
}

Example 19 with BoundIdentifiers

use of org.drools.compiler.compiler.BoundIdentifiers in project drools by kiegroup.

the class PatternBuilder method getUsedDeclarations.

public static Declaration[][] getUsedDeclarations(RuleBuildContext context, Pattern pattern, AnalysisResult analysis) {
    BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();
    final List<Declaration> tupleDeclarations = new ArrayList<Declaration>();
    final List<Declaration> factDeclarations = new ArrayList<Declaration>();
    for (String id : usedIdentifiers.getDeclrClasses().keySet()) {
        Declaration decl = context.getDeclarationResolver().getDeclaration(id);
        if (decl.getPattern() == pattern) {
            factDeclarations.add(decl);
        } else {
            tupleDeclarations.add(decl);
        }
    }
    createImplicitBindings(context, pattern, analysis.getNotBoundedIdentifiers(), analysis.getBoundIdentifiers(), factDeclarations);
    Declaration[][] usedDeclarations = new Declaration[2][];
    usedDeclarations[0] = tupleDeclarations.toArray(new Declaration[tupleDeclarations.size()]);
    usedDeclarations[1] = factDeclarations.toArray(new Declaration[factDeclarations.size()]);
    return usedDeclarations;
}

Example 20 with BoundIdentifiers

use of org.drools.compiler.compiler.BoundIdentifiers in project drools by kiegroup.

the class PatternBuilder method buildEval.

@SuppressWarnings("unchecked")
protected Constraint buildEval(final RuleBuildContext context, final Pattern pattern, final PredicateDescr predicateDescr, final Map<String, OperatorDescr> aliases, final String expr, final boolean isEvalExpression) {
    AnalysisResult analysis = buildAnalysis(context, pattern, predicateDescr, aliases);
    if (analysis == null) {
        // something bad happened
        return null;
    }
    Declaration[][] usedDeclarations = getUsedDeclarations(context, pattern, analysis);
    Declaration[] previousDeclarations = usedDeclarations[0];
    Declaration[] localDeclarations = usedDeclarations[1];
    BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();
    Arrays.sort(previousDeclarations, SortDeclarations.instance);
    Arrays.sort(localDeclarations, SortDeclarations.instance);
    boolean isJavaEval = isEvalExpression && context.getDialect() instanceof JavaDialect;
    if (isJavaEval) {
        final PredicateConstraint predicateConstraint = new PredicateConstraint(null, previousDeclarations, localDeclarations);
        final PredicateBuilder builder = context.getDialect().getPredicateBuilder();
        builder.build(context, usedIdentifiers, previousDeclarations, localDeclarations, predicateConstraint, predicateDescr, analysis);
        return predicateConstraint;
    }
    MVELCompilationUnit compilationUnit = getConstraintBuilder(context).buildCompilationUnit(context, previousDeclarations, localDeclarations, predicateDescr, analysis);
    String[] requiredGlobals = usedIdentifiers.getGlobals().keySet().toArray(new String[usedIdentifiers.getGlobals().size()]);
    Declaration[] mvelDeclarations = new Declaration[previousDeclarations.length + localDeclarations.length + requiredGlobals.length];
    int i = 0;
    for (Declaration d : previousDeclarations) {
        mvelDeclarations[i++] = d;
    }
    for (Declaration d : localDeclarations) {
        mvelDeclarations[i++] = d;
    }
    for (String global : requiredGlobals) {
        mvelDeclarations[i++] = context.getDeclarationResolver().getDeclaration(global);
    }
    boolean isDynamic = !pattern.getObjectType().getClassType().isArray() && !context.getKnowledgeBuilder().getTypeDeclaration(pattern.getObjectType().getClassType()).isTypesafe();
    return getConstraintBuilder(context).buildMvelConstraint(context.getPkg().getName(), expr, mvelDeclarations, getOperators(usedIdentifiers.getOperators()), compilationUnit, isDynamic);
}