diff --git a/org.springframework.expression/src/main/java/org/springframework/expression/common/ExpressionUtils.java b/org.springframework.expression/src/main/java/org/springframework/expression/common/ExpressionUtils.java index 42d76d5dc0a..319df42963c 100644 --- a/org.springframework.expression/src/main/java/org/springframework/expression/common/ExpressionUtils.java +++ b/org.springframework.expression/src/main/java/org/springframework/expression/common/ExpressionUtils.java @@ -22,33 +22,34 @@ import org.springframework.expression.TypeUtils; /** * Common utility functions that may be used by any Expression Language provider. - * + * * @author Andy Clement */ public class ExpressionUtils { /** - * Determines if there is a type converter available in the specified context and attempts to use it to convert the supplied - * value to the specified type. Throws an exception if conversion is not possible. + * Determines if there is a type converter available in the specified context and attempts to use it to convert the + * supplied value to the specified type. Throws an exception if conversion is not possible. * * @param context the evaluation context that may define a type converter * @param value the value to convert (may be null) * @param toType the type to attempt conversion to * @return the converted value - * @throws EvaluationException if there is a problem during conversion or conversion of the value to the specified type is not supported + * @throws EvaluationException if there is a problem during conversion or conversion of the value to the specified + * type is not supported */ public static Object convert(EvaluationContext context, Object value, Class toType) throws EvaluationException { - if (value==null || toType.isAssignableFrom(value.getClass())) { + if (value == null || toType == null || toType.isAssignableFrom(value.getClass())) { return value; } - if (context!=null) { + if (context != null) { TypeUtils typeUtils = context.getTypeUtils(); if (typeUtils != null) { TypeConverter typeConverter = typeUtils.getTypeConverter(); - return typeConverter.convertValue(value,toType); + return typeConverter.convertValue(value, toType); } } - throw new EvaluationException("Cannot convert value '"+value+"' to type '"+toType.getName()+"'"); + throw new EvaluationException("Cannot convert value '" + value + "' to type '" + toType.getName() + "'"); } }