public static List <TypeInfo> typeInfosFromTypeNames(List <String> typeNames)
{
List <TypeInfo> result = new List <TypeInfo>(typeNames.Count);
for (int i = 0; i < typeNames.Count; i++)
{
TypeInfo typeInfo = TypeInfoUtils.getTypeInfoFromTypeString(typeNames[i]);
result.Add(typeInfo);
}
return(result);
}
/**
* Given two types, determine whether conversion needs to occur to compare the two types.
* This is needed for cases like varchar, where the TypeInfo for varchar(10) != varchar(5),
* but there would be no need to have to convert to compare these values.
* @param typeA
* @param typeB
* @return
*/
public static bool isConversionRequiredForComparison(TypeInfo typeA, TypeInfo typeB)
{
if (typeA.Equals(typeB))
{
return(false);
}
if (TypeInfoUtils.doPrimitiveCategoriesMatch(typeA, typeB))
{
return(false);
}
return(true);
}
public static List <TypeInfo> typeInfosFromStructObjectInspector(
StructObjectInspector structObjectInspector)
{
IList <StructField> fields = structObjectInspector.getAllStructFieldRefs();
List <TypeInfo> typeInfoList = new List <TypeInfo>(fields.Count);
foreach (StructField field in fields)
{
TypeInfo typeInfo = TypeInfoUtils.getTypeInfoFromTypeString(
field.getFieldObjectInspector().getTypeName());
typeInfoList.Add(typeInfo);
}
return(typeInfoList);
}
/**
* Get the parameter TypeInfo for a method.
*
* @param size
* In case the last parameter of Method is an array, we will try to
* return a List<TypeInfo> with the specified size by repeating the
* element of the array at the end. In case the size is smaller than
* the minimum possible number of arguments for the method, null will
* be returned.
*/
public static List <TypeInfo> getParameterTypeInfos(MethodInfo m, int size)
{
Type[] methodParameterTypes = m.GetParameters().Select(p => p.ParameterType).ToArray();
// Whether the method takes variable-length arguments
// Whether the method takes an array like Object[],
// or String[] etc in the last argument.
Type lastParaElementType = TypeInfoUtils
.getArrayElementType(methodParameterTypes.Length == 0 ? null
: methodParameterTypes[methodParameterTypes.Length - 1]);
bool isVariableLengthArgument = (lastParaElementType != null);
List <TypeInfo> typeInfos = null;
if (!isVariableLengthArgument)
{
// Normal case, no variable-length arguments
if (size != methodParameterTypes.Length)
{
return(null);
}
typeInfos = new List <TypeInfo>(methodParameterTypes.Length);
foreach (Type methodParameterType in methodParameterTypes)
{
typeInfos.Add(getExtendedTypeInfoFromJavaType(methodParameterType, m));
}
}
else
{
// Variable-length arguments
if (size < methodParameterTypes.Length - 1)
{
return(null);
}
typeInfos = new List <TypeInfo>(size);
for (int i = 0; i < methodParameterTypes.Length - 1; i++)
{
typeInfos.Add(getExtendedTypeInfoFromJavaType(methodParameterTypes[i],
m));
}
for (int i = methodParameterTypes.Length - 1; i < size; i++)
{
typeInfos.Add(getExtendedTypeInfoFromJavaType(lastParaElementType, m));
}
}
return(typeInfos);
}
/**
* Return the extended TypeInfo from a Java type. By extended TypeInfo, we
* allow unknownType for java.lang.Object.
*
* @param t
* The Java type.
* @param m
* The method, only used for generating error messages.
*/
private static TypeInfo getExtendedTypeInfoFromJavaType(Type t, MethodInfo m)
{
if (t == typeof(object))
{
return(TypeInfoFactory.unknownTypeInfo);
}
if (t.IsGenericType)
{
Type bt = t.GetGenericTypeDefinition();
Type[] pt = t.GenericTypeArguments;
// List?
if (bt == typeof(List <>))
{
return(TypeInfoFactory.getListTypeInfo(getExtendedTypeInfoFromJavaType(
pt[0], m)));
}
// Map?
if (bt == typeof(Dictionary <,>))
{
return(TypeInfoFactory.getMapTypeInfo(
getExtendedTypeInfoFromJavaType(pt[0], m),
getExtendedTypeInfoFromJavaType(pt[1], m)));
}
}
// Java Primitive Type?
if (PrimitiveObjectInspectorUtils.isPrimitiveJavaType(t))
{
return(TypeInfoUtils
.getTypeInfoFromObjectInspector(PrimitiveObjectInspectorFactory
.getPrimitiveJavaObjectInspector(PrimitiveObjectInspectorUtils
.getTypeEntryFromPrimitiveJavaType(t).primitiveCategory)));
}
// Java Primitive Class?
if (PrimitiveObjectInspectorUtils.isPrimitiveJavaClass(t))
{
return(TypeInfoUtils
.getTypeInfoFromObjectInspector(PrimitiveObjectInspectorFactory
.getPrimitiveJavaObjectInspector(PrimitiveObjectInspectorUtils
.getTypeEntryFromPrimitiveJavaClass(t).primitiveCategory)));
}
// Primitive Writable class?
if (PrimitiveObjectInspectorUtils.isPrimitiveWritableClass(t))
{
return(TypeInfoUtils
.getTypeInfoFromObjectInspector(PrimitiveObjectInspectorFactory
.getPrimitiveWritableObjectInspector(PrimitiveObjectInspectorUtils
.getTypeEntryFromPrimitiveWritableClass(t).primitiveCategory)));
}
// Must be a struct
FieldInfo[] fields = ObjectInspectorUtils.getDeclaredNonStaticFields(t);
List <string> fieldNames = new List <string>(fields.Length);
List <TypeInfo> fieldTypeInfos = new List <TypeInfo>(fields.Length);
foreach (FieldInfo field in fields)
{
fieldNames.Add(field.Name);
fieldTypeInfos.Add(getExtendedTypeInfoFromJavaType(
field.FieldType, m));
}
return(TypeInfoFactory.getStructTypeInfo(fieldNames, fieldTypeInfos));
}