Documentation
¶
Index ¶
- func AddressMatchKey(address []int) string
- func ExtendAddress(address []int, index ...int) []int
- func GetNestedAttributeByAddress(v interface{}, attrAddress []int) interface{}
- type AttrDictionaryRec
- func (dictRec *AttrDictionaryRec) AddressToDictionaryRec(address []int) *AttrDictionaryRec
- func (dictRec *AttrDictionaryRec) AddressToFullAddress(address []int) []int
- func (dictRec *AttrDictionaryRec) AddressToFullPath(address []int) string
- func (dictRec *AttrDictionaryRec) AttributePathToAddress(attrPath string) ([]int, error)
- type AttributeAddress
- type MapperConfig
- type ObjectAttributeMap
- func (attrMap *ObjectAttributeMap) GetAttribute(attrPath string) (interface{}, error)
- func (attrMap *ObjectAttributeMap) GetAttributeByAddress(attrAddress []int, frame interface{}) (interface{}, error)
- func (attrMap *ObjectAttributeMap) GetNumElementsAtAddress(address *AttributeAddress, frames []interface{}) (int, error)
- type ObjectAttributeMapper
- type PathSegment
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func AddressMatchKey ¶
func ExtendAddress ¶
func GetNestedAttributeByAddress ¶
func GetNestedAttributeByAddress(
v interface{}, attrAddress []int) interface{}
Types ¶
type AttrDictionaryRec ¶
type AttrDictionaryRec struct {
Address []int
// contains filtered or unexported fields
}
func (*AttrDictionaryRec) AddressToDictionaryRec ¶
func (dictRec *AttrDictionaryRec) AddressToDictionaryRec(address []int) *AttrDictionaryRec
func (*AttrDictionaryRec) AddressToFullAddress ¶
func (dictRec *AttrDictionaryRec) AddressToFullAddress(address []int) []int
func (*AttrDictionaryRec) AddressToFullPath ¶
func (dictRec *AttrDictionaryRec) AddressToFullPath(address []int) string
func (*AttrDictionaryRec) AttributePathToAddress ¶
func (dictRec *AttrDictionaryRec) AttributePathToAddress(attrPath string) ([]int, error)
AttributePathToAddress
AttributePathToAddress indexes a leaf attribute name for fast lookup and efficient object representation. LeafAttribute here denotes an attribute that is either a scalar value or an array, but not a struct. Attributes that point to nested objects are registered together with the nested objects' attributes using flattened dotted notation. For example, consider the following Json structure:
{
"person": {
"name": "John",
"age": 25,
"children": [
{
"name": "Jane",
"age": 3
},
{
"name": "Jim",
"age": 1
}
]
}
}
Assuming that all the structure's attributes are referenced, it will be mapped to the following attributes:
"person.name" "person.age" "person.children[]"
Note that "person" is not mapped as it is not a leaf attribute. Neither is "person.children.name" mapped, as we stop at the first array attribute, using [] suffix to indicate that the value is an array and not a scalar.
type AttributeAddress ¶
type AttributeAddress struct {
Address []int
// Keep the original Path string around in case we need to issue an error message
Path string
// ParentParameterIndex: index into the parentParameter array pointing to the parent Address value
// The attribute Address is a concatenation of this value and the Address above
ParentParameterIndex int
// FullAddress is used for matching an attribute Address with the filters that use it.
// It may not have the actual values of array indexes when used inside "for each" loops.
FullAddress []int
}
type MapperConfig ¶
type MapperConfig interface {
MapScalar(interface{}) interface{}
GetAppCtx() *types.AppContext
}
type ObjectAttributeMap ¶
type ObjectAttributeMap struct {
DictRec *AttrDictionaryRec
Values []interface{}
}
func (*ObjectAttributeMap) GetAttribute ¶
func (attrMap *ObjectAttributeMap) GetAttribute(attrPath string) (interface{}, error)
func (*ObjectAttributeMap) GetAttributeByAddress ¶
func (attrMap *ObjectAttributeMap) GetAttributeByAddress(attrAddress []int, frame interface{}) (interface{}, error)
func (*ObjectAttributeMap) GetNumElementsAtAddress ¶
func (attrMap *ObjectAttributeMap) GetNumElementsAtAddress(address *AttributeAddress, frames []interface{}) (int, error)
type ObjectAttributeMapper ¶
type ObjectAttributeMapper struct {
RootDictRec *AttrDictionaryRec
Ctx *types.AppContext
Config MapperConfig
// contains filtered or unexported fields
}
ObjectAttributeMapper object indexes object field names used in general filters. It then uses these indexes to create EventAttributeMap object representation that only store the fields referenced by the filters. EventAttributeMap also allows fast access to these fields when evaluating filters.
func NewObjectAttributeMapper ¶
func NewObjectAttributeMapper(config MapperConfig) *ObjectAttributeMapper
func (*ObjectAttributeMapper) FreeObjects ¶
func (mapper *ObjectAttributeMapper) FreeObjects()
func (*ObjectAttributeMapper) MapObject ¶
func (mapper *ObjectAttributeMapper) MapObject(v interface{}, attrCallback func([]int)) *ObjectAttributeMap
func (*ObjectAttributeMapper) NewObjectAttributeMap ¶
func (mapper *ObjectAttributeMapper) NewObjectAttributeMap() *ObjectAttributeMap
type PathSegment ¶
type PathSegment struct {
// contains filtered or unexported fields
}
Source Files