What is wrong with this elastic json query, mapping? - json

Question

I am trying to use nested JSON to query DB records. Here is my query -
"query": {
"nested": {
"path": "metadata.technical",
"query": {
"bool": {
"must": [
{
"term": {
"metadata.technical.key": "techcolor"
}
},
{
"term": {
"metadata.technical.value": "red"
}
}
]
}
}
}
}
Here is this part in my mapping.json -
"metadata": {
"include_in_parent": true,
"properties": {
"technical": {
"type": "nested",
"properties": {
"key": {
"type": "string"
},
"value": {
"type": "string"
}
}
}
}
}
And I have table that has column 'value' and its content is -
{"technical":
{
"techname22": "test",
"techcolor":"red",
"techlocation": "usa"
}
}
Why I can't get any results with this? FYI I am using ES 1.7. Thanks for any help.

Answer 1

To respect the mapping you've defined your sample document should look like this:
{
"technical": [
{
"key": "techname22",
"value": "test"
},
{
"key": "techcolor",
"value": "red"
},
{
"key": "techlocation",
"value": "usa"
}
]
}
Changing your document with the above structure would make your query work as it is.
The real mapping of this document:
{
"technical": {
"techname22": "test",
"techcolor": "red",
"techlocation": "usa"
}
}
Is more like this:
{
"include_in_parent": true,
"properties": {
"technical": {
"type": "nested",
"properties": {
"techname22": {
"type": "string"
},
"techcolor": {
"type": "string"
},
"techlocation": {
"type": "string"
}
}
}
}
}
If all your keys are dynamic and not known in advance, you can also configure your mapping to be dynamic as well, i.e. don't define any fields in the nested type and new fields will be added if not already present in the mapping:
{
"include_in_parent": true,
"properties": {
"technical": {
"type": "nested",
"properties": {
}
}
}
}