Examples with SpelEvaluationException cn.taketoday.expression.spel.SpelEvaluationException used on opensource projects

Example 1 with SpelEvaluationException

use of cn.taketoday.expression.spel.SpelEvaluationException in project today-infrastructure by TAKETODAY.

the class CompoundExpression method getValueRef.

@Override
protected ValueRef getValueRef(ExpressionState state) throws EvaluationException {
    SpelNodeImpl[] children = this.children;
    if (getChildCount() == 1) {
        return children[0].getValueRef(state);
    }
    SpelNodeImpl nextNode = children[0];
    try {
        TypedValue result = nextNode.getValueInternal(state);
        int cc = getChildCount();
        for (int i = 1; i < cc - 1; i++) {
            try {
                state.pushActiveContextObject(result);
                nextNode = children[i];
                result = nextNode.getValueInternal(state);
            } finally {
                state.popActiveContextObject();
            }
        }
        try {
            state.pushActiveContextObject(result);
            nextNode = children[cc - 1];
            return nextNode.getValueRef(state);
        } finally {
            state.popActiveContextObject();
        }
    } catch (SpelEvaluationException ex) {
        // Correct the position for the error before re-throwing
        ex.setPosition(nextNode.getStartPosition());
        throw ex;
    }
}

Example 2 with SpelEvaluationException

use of cn.taketoday.expression.spel.SpelEvaluationException in project today-infrastructure by TAKETODAY.

the class ReflectiveMethodResolver method resolve.

/**
 * Locate a method on a type. There are three kinds of match that might occur:
 * <ol>
 * <li>an exact match where the types of the arguments match the types of the constructor
 * <li>an in-exact match where the types we are looking for are subtypes of those defined on the constructor
 * <li>a match where we are able to convert the arguments into those expected by the constructor,
 * according to the registered type converter
 * </ol>
 */
@Override
@Nullable
public MethodExecutor resolve(EvaluationContext context, Object targetObject, String name, List<TypeDescriptor> argumentTypes) throws AccessException {
    try {
        TypeConverter typeConverter = context.getTypeConverter();
        Class<?> type = (targetObject instanceof Class ? (Class<?>) targetObject : targetObject.getClass());
        ArrayList<Method> methods = new ArrayList<>(getMethods(type, targetObject));
        // If a filter is registered for this type, call it
        MethodFilter filter = (this.filters != null ? this.filters.get(type) : null);
        if (filter != null) {
            List<Method> filtered = filter.filter(methods);
            methods = (filtered instanceof ArrayList ? (ArrayList<Method>) filtered : new ArrayList<>(filtered));
        }
        // Sort methods into a sensible order
        if (methods.size() > 1) {
            methods.sort((m1, m2) -> {
                int m1pl = m1.getParameterCount();
                int m2pl = m2.getParameterCount();
                // vararg methods go last
                if (m1pl == m2pl) {
                    if (!m1.isVarArgs() && m2.isVarArgs()) {
                        return -1;
                    } else if (m1.isVarArgs() && !m2.isVarArgs()) {
                        return 1;
                    } else {
                        return 0;
                    }
                }
                return Integer.compare(m1pl, m2pl);
            });
        }
        // Resolve any bridge methods
        for (int i = 0; i < methods.size(); i++) {
            methods.set(i, BridgeMethodResolver.findBridgedMethod(methods.get(i)));
        }
        // Remove duplicate methods (possible due to resolved bridge methods)
        Set<Method> methodsToIterate = new LinkedHashSet<>(methods);
        Method closeMatch = null;
        int closeMatchDistance = Integer.MAX_VALUE;
        Method matchRequiringConversion = null;
        boolean multipleOptions = false;
        for (Method method : methodsToIterate) {
            if (method.getName().equals(name)) {
                int paramCount = method.getParameterCount();
                List<TypeDescriptor> paramDescriptors = new ArrayList<>(paramCount);
                for (int i = 0; i < paramCount; i++) {
                    paramDescriptors.add(new TypeDescriptor(new MethodParameter(method, i)));
                }
                ReflectionHelper.ArgumentsMatchInfo matchInfo = null;
                if (method.isVarArgs() && argumentTypes.size() >= (paramCount - 1)) {
                    // *sigh* complicated
                    matchInfo = ReflectionHelper.compareArgumentsVarargs(paramDescriptors, argumentTypes, typeConverter);
                } else if (paramCount == argumentTypes.size()) {
                    // Name and parameter number match, check the arguments
                    matchInfo = ReflectionHelper.compareArguments(paramDescriptors, argumentTypes, typeConverter);
                }
                if (matchInfo != null) {
                    if (matchInfo.isExactMatch()) {
                        return new ReflectiveMethodExecutor(method, type);
                    } else if (matchInfo.isCloseMatch()) {
                        if (this.useDistance) {
                            int matchDistance = ReflectionHelper.getTypeDifferenceWeight(paramDescriptors, argumentTypes);
                            if (closeMatch == null || matchDistance < closeMatchDistance) {
                                // This is a better match...
                                closeMatch = method;
                                closeMatchDistance = matchDistance;
                            }
                        } else {
                            // Take this as a close match if there isn't one already
                            if (closeMatch == null) {
                                closeMatch = method;
                            }
                        }
                    } else if (matchInfo.isMatchRequiringConversion()) {
                        if (matchRequiringConversion != null) {
                            multipleOptions = true;
                        }
                        matchRequiringConversion = method;
                    }
                }
            }
        }
        if (closeMatch != null) {
            return new ReflectiveMethodExecutor(closeMatch, type);
        } else if (matchRequiringConversion != null) {
            if (multipleOptions) {
                throw new SpelEvaluationException(SpelMessage.MULTIPLE_POSSIBLE_METHODS, name);
            }
            return new ReflectiveMethodExecutor(matchRequiringConversion, type);
        } else {
            return null;
        }
    } catch (EvaluationException ex) {
        throw new AccessException("Failed to resolve method", ex);
    }
}

Example 3 with SpelEvaluationException

use of cn.taketoday.expression.spel.SpelEvaluationException in project today-infrastructure by TAKETODAY.

the class SpelExpression method getValue.

@SuppressWarnings("unchecked")
@Override
@Nullable
public <T> T getValue(@Nullable Class<T> expectedResultType) throws EvaluationException {
    CompiledExpression compiledAst = this.compiledAst;
    if (compiledAst != null) {
        try {
            EvaluationContext context = getEvaluationContext();
            Object result = compiledAst.getValue(context.getRootObject().getValue(), context);
            if (expectedResultType == null) {
                return (T) result;
            } else {
                return ExpressionUtils.convertTypedValue(getEvaluationContext(), new TypedValue(result), expectedResultType);
            }
        } catch (Throwable ex) {
            // If running in mixed mode, revert to interpreted
            if (this.configuration.getCompilerMode() == SpelCompilerMode.MIXED) {
                this.compiledAst = null;
                this.interpretedCount.set(0);
            } else {
                // Running in SpelCompilerMode.immediate mode - propagate exception to caller
                throw new SpelEvaluationException(ex, SpelMessage.EXCEPTION_RUNNING_COMPILED_EXPRESSION);
            }
        }
    }
    ExpressionState expressionState = new ExpressionState(getEvaluationContext(), this.configuration);
    TypedValue typedResultValue = this.ast.getTypedValue(expressionState);
    checkCompile(expressionState);
    return ExpressionUtils.convertTypedValue(expressionState.getEvaluationContext(), typedResultValue, expectedResultType);
}

Example 4 with SpelEvaluationException

use of cn.taketoday.expression.spel.SpelEvaluationException in project today-infrastructure by TAKETODAY.

the class SpelExpression method getValue.

@Override
@Nullable
public Object getValue(@Nullable Object rootObject) throws EvaluationException {
    CompiledExpression compiledAst = this.compiledAst;
    if (compiledAst != null) {
        try {
            return compiledAst.getValue(rootObject, getEvaluationContext());
        } catch (Throwable ex) {
            // If running in mixed mode, revert to interpreted
            if (this.configuration.getCompilerMode() == SpelCompilerMode.MIXED) {
                this.compiledAst = null;
                this.interpretedCount.set(0);
            } else {
                // Running in SpelCompilerMode.immediate mode - propagate exception to caller
                throw new SpelEvaluationException(ex, SpelMessage.EXCEPTION_RUNNING_COMPILED_EXPRESSION);
            }
        }
    }
    ExpressionState expressionState = new ExpressionState(getEvaluationContext(), toTypedValue(rootObject), this.configuration);
    Object result = this.ast.getValue(expressionState);
    checkCompile(expressionState);
    return result;
}

Example 5 with SpelEvaluationException

use of cn.taketoday.expression.spel.SpelEvaluationException in project today-infrastructure by TAKETODAY.

the class SpelExpression method getValue.

@SuppressWarnings("unchecked")
@Override
@Nullable
public <T> T getValue(EvaluationContext context, @Nullable Object rootObject, @Nullable Class<T> expectedResultType) throws EvaluationException {
    Assert.notNull(context, "EvaluationContext is required");
    CompiledExpression compiledAst = this.compiledAst;
    if (compiledAst != null) {
        try {
            Object result = compiledAst.getValue(rootObject, context);
            if (expectedResultType != null) {
                return ExpressionUtils.convertTypedValue(context, new TypedValue(result), expectedResultType);
            } else {
                return (T) result;
            }
        } catch (Throwable ex) {
            // If running in mixed mode, revert to interpreted
            if (this.configuration.getCompilerMode() == SpelCompilerMode.MIXED) {
                this.compiledAst = null;
                this.interpretedCount.set(0);
            } else {
                // Running in SpelCompilerMode.immediate mode - propagate exception to caller
                throw new SpelEvaluationException(ex, SpelMessage.EXCEPTION_RUNNING_COMPILED_EXPRESSION);
            }
        }
    }
    ExpressionState expressionState = new ExpressionState(context, toTypedValue(rootObject), this.configuration);
    TypedValue typedResultValue = this.ast.getTypedValue(expressionState);
    checkCompile(expressionState);
    return ExpressionUtils.convertTypedValue(context, typedResultValue, expectedResultType);
}