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

Example 21 with DescrBuildError

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

the class MVELEvalBuilder method build.

/**
 * Builds and returns an Eval Conditional Element
 *
 * @param context The current build context
 * @param descr The Eval Descriptor to build the eval conditional element from
 *
 * @return the Eval Conditional Element
 */
public RuleConditionElement build(final RuleBuildContext context, final BaseDescr descr, final Pattern prefixPattern) {
    boolean typesafe = context.isTypesafe();
    // it must be an EvalDescr
    final EvalDescr evalDescr = (EvalDescr) descr;
    try {
        MVELDialect dialect = (MVELDialect) context.getDialect("mvel");
        Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations(context.getRule());
        AnalysisResult analysis = context.getDialect().analyzeExpression(context, evalDescr, evalDescr.getContent(), new BoundIdentifiers(DeclarationScopeResolver.getDeclarationClasses(decls), context));
        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((String) evalDescr.getContent(), analysis, previousDeclarations, null, null, context, "drools", KnowledgeHelper.class, false, MVELCompilationUnit.Scope.EXPRESSION);
        final EvalCondition eval = new EvalCondition(previousDeclarations);
        MVELEvalExpression expr = new MVELEvalExpression(unit, dialect.getId());
        eval.setEvalExpression(KiePolicyHelper.isPolicyEnabled() ? new SafeEvalExpression(expr) : expr);
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
        data.addCompileable(eval, expr);
        expr.compile(data, context.getRule());
        return eval;
    } catch (final Exception e) {
        copyErrorLocation(e, evalDescr);
        context.addError(new DescrBuildError(context.getParentDescr(), evalDescr, e, "Unable to build expression for 'eval':" + e.getMessage() + " '" + evalDescr.getContent() + "'"));
        return null;
    } finally {
        context.setTypesafe(typesafe);
    }
}

Example 22 with DescrBuildError

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

the class MVELFromBuilder method build.

public RuleConditionElement build(final RuleBuildContext context, final BaseDescr descr, final Pattern prefixPattern) {
    String text = ((FromDescr) descr).getExpression();
    Optional<EntryPointId> entryPointId = context.getEntryPointId(text);
    if (entryPointId.isPresent()) {
        return entryPointId.get();
    }
    // This builder is re-usable in other dialects, so specify by name
    MVELDialect dialect = (MVELDialect) context.getDialect("mvel");
    boolean typeSafe = context.isTypesafe();
    if (!dialect.isStrictMode()) {
        context.setTypesafe(false);
    }
    try {
        Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations(context.getRule());
        AnalysisResult analysis = dialect.analyzeExpression(context, descr, text, new BoundIdentifiers(DeclarationScopeResolver.getDeclarationClasses(decls), context));
        if (analysis == null) {
            // something bad happened
            return null;
        }
        Class<?> returnType = ((MVELAnalysisResult) analysis).getReturnType();
        if (prefixPattern != null && !prefixPattern.isCompatibleWithFromReturnType(returnType)) {
            context.addError(new DescrBuildError(descr, context.getRuleDescr(), null, "Pattern of type: '" + prefixPattern.getObjectType() + "' on rule '" + context.getRuleDescr().getName() + "' is not compatible with type " + returnType.getCanonicalName() + " returned by source"));
            return null;
        }
        final BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();
        final Declaration[] declarations = new Declaration[usedIdentifiers.getDeclrClasses().size()];
        int j = 0;
        for (String str : usedIdentifiers.getDeclrClasses().keySet()) {
            declarations[j++] = decls.get(str);
        }
        Arrays.sort(declarations, SortDeclarations.instance);
        MVELCompilationUnit unit = dialect.getMVELCompilationUnit(text, analysis, declarations, null, null, context, "drools", KnowledgeHelper.class, false, MVELCompilationUnit.Scope.CONSEQUENCE);
        MVELDataProvider dataProvider = new MVELDataProvider(unit, context.getDialect().getId());
        From from = new From(dataProvider);
        from.setResultPattern(prefixPattern);
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
        data.addCompileable(from, dataProvider);
        dataProvider.compile(data, context.getRule());
        return from;
    } catch (final Exception e) {
        DialectUtil.copyErrorLocation(e, descr);
        context.addError(new DescrBuildError(context.getParentDescr(), descr, null, "Unable to build expression for 'from' : " + e.getMessage() + " '" + text + "'"));
        return null;
    } finally {
        context.setTypesafe(typeSafe);
    }
}

Example 23 with DescrBuildError

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

the class MVELReturnValueBuilder method build.

public void build(final RuleBuildContext context, final BoundIdentifiers usedIdentifiers, final Declaration[] previousDeclarations, final Declaration[] localDeclarations, final ReturnValueRestriction returnValueRestriction, final ReturnValueRestrictionDescr returnValueRestrictionDescr, final AnalysisResult analysis) {
    boolean typesafe = context.isTypesafe();
    try {
        MVELDialect dialect = (MVELDialect) context.getDialect("mvel");
        context.setTypesafe(((MVELAnalysisResult) analysis).isTypesafe());
        MVELCompilationUnit unit = dialect.getMVELCompilationUnit((String) returnValueRestrictionDescr.getContent(), analysis, previousDeclarations, localDeclarations, null, context, "drools", KnowledgeHelper.class, false, MVELCompilationUnit.Scope.EXPRESSION);
        MVELReturnValueExpression expr = new MVELReturnValueExpression(unit, context.getDialect().getId());
        returnValueRestriction.setReturnValueExpression(expr);
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
        data.addCompileable(returnValueRestriction, 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 'returnValue' : " + e.getMessage() + "'" + context.getRuleDescr().getSalience() + "'"));
    } finally {
        context.setTypesafe(typesafe);
    }
}

Example 24 with DescrBuildError

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

the class JavaAccumulateBuilder method bindReaderToDeclaration.

private void bindReaderToDeclaration(RuleBuildContext context, AccumulateDescr accumDescr, Pattern pattern, AccumulateFunctionCallDescr fc, InternalReadAccessor readAccessor, Class<?> resultType, int index) {
    if (fc.getBind() != null) {
        if (context.getDeclarationResolver().isDuplicated(context.getRule(), fc.getBind(), resultType.getName())) {
            if (!fc.isUnification()) {
                context.addError(new DescrBuildError(context.getParentDescr(), accumDescr, null, "Duplicate declaration for variable '" + fc.getBind() + "' in the rule '" + context.getRule().getName() + "'"));
            } else {
                Declaration inner = context.getDeclarationResolver().getDeclaration(fc.getBind());
                Constraint c = new MvelConstraint(Collections.singletonList(context.getPkg().getName()), index >= 0 ? "this[ " + index + " ] == " + fc.getBind() : "this == " + fc.getBind(), new Declaration[] { inner }, null, null, IndexUtil.ConstraintType.EQUAL, context.getDeclarationResolver().getDeclaration(fc.getBind()), index >= 0 ? new ArrayElementReader(readAccessor, index, resultType) : readAccessor, true);
                ((MutableTypeConstraint) c).setType(Constraint.ConstraintType.BETA);
                pattern.addConstraint(c);
            }
        } else {
            Declaration declr = pattern.addDeclaration(fc.getBind());
            declr.setReadAccessor(readAccessor);
        }
    }
}

Example 25 with DescrBuildError

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

the class JavaRuleBuilderHelper method createConsequenceContext.

public static Map<String, Object> createConsequenceContext(final RuleBuildContext context, String consequenceName, String className, String consequenceText, Map<String, Declaration> decls, final BoundIdentifiers usedIdentifiers) {
    final Declaration[] declarations = new Declaration[usedIdentifiers.getDeclrClasses().size()];
    String[] declrStr = new String[declarations.length];
    int j = 0;
    for (String str : usedIdentifiers.getDeclrClasses().keySet()) {
        declrStr[j] = str;
        declarations[j++] = decls.get(str);
    }
    Arrays.sort(declarations, RuleTerminalNode.SortDeclarations.instance);
    for (int i = 0; i < declrStr.length; i++) {
        declrStr[i] = declarations[i].getIdentifier();
    }
    context.getRule().setRequiredDeclarationsForConsequence(consequenceName, declrStr);
    final Map<String, Object> map = createVariableContext(className, consequenceText, context, declarations, null, usedIdentifiers.getGlobals());
    map.put("consequenceName", consequenceName);
    // final int[] indexes = new int[declarations.length];
    final Integer[] indexes = new Integer[declarations.length];
    final Boolean[] notPatterns = new Boolean[declarations.length];
    for (int i = 0, length = declarations.length; i < length; i++) {
        indexes[i] = i;
        notPatterns[i] = (declarations[i].getExtractor() instanceof AcceptsClassObjectType) ? Boolean.FALSE : Boolean.TRUE;
        if (indexes[i] == -1) {
            context.addError(new DescrBuildError(context.getParentDescr(), context.getRuleDescr(), null, "Internal Error : Unable to find declaration in list while generating the consequence invoker"));
        }
    }
    map.put("indexes", indexes);
    map.put("notPatterns", notPatterns);
    return map;
}