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Fieldsedit
Allows to selectively load specific fields for each document represented
by a search hit. Defaults to load the internal _source field.
{
"fields" : ["user", "postDate"],
"query" : {
"term" : { "user" : "kimchy" }
}
}
The fields will automatically load stored fields (store mapping set to
yes), or, if not stored, will load the _source and extract it from
it (allowing to return nested document object).
* can be used to load all stored fields from the document.
An empty array will cause only the _id and _type for each hit to be
returned, for example:
{
"fields" : [],
"query" : {
"term" : { "user" : "kimchy" }
}
}
Script fields can also be automatically detected and used as fields, so
things like _source.obj1.obj2 can be used, though not recommended, as
obj1.obj2 will work as well.
Partialedit
When loading data from _source, partial fields can be used to use
wildcards to control what part of the _source will be loaded based on
include and exclude patterns. For example:
{
"query" : {
"match_all" : {}
},
"partial_fields" : {
"partial1" : {
"include" : "obj1.obj2.*",
}
}
}
And one that will also exclude obj1.obj3:
{
"query" : {
"match_all" : {}
},
"partial_fields" : {
"partial1" : {
"include" : "obj1.obj2.*",
"exclude" : "obj1.obj3.*"
}
}
}
Both include and exclude support multiple patterns:
{
"query" : {
"match_all" : {}
},
"partial_fields" : {
"partial1" : {
"include" : ["obj1.obj2.*", "obj1.obj4.*"],
"exclude" : "obj1.obj3.*"
}
}
}