How To Store EAV Data When It Has Nested Objects/Entities












0















I have json data that have both nested objects and attributes. Eg of one json object:



(After json_decode into an array:)



Array
(
[attributename1] => attributevalue1
[attributename2] => attributevalue2
[NestedEntity1] => Array (

[0] => Array (
[attributename1] => attributevalue1
[attributename2] => attributevalue2
)
[1] => Array (
[attributename1] => attributevalue1
[attributename2] => attributevalue2
)
[2] => Array (
[attributename1] => attributevalue1
[attributename2] => attributevalue2
[NestedEntity1.2] => Array (

[0] => Array (
[attributename1] => attributevalue1
[attributename2] => attributevalue2
)
[1] => Array (
[attributename1] => attributevalue1
[attributename2] => attributevalue2
)

)

)

) )


Note: entities can be further nested in nested entities



My question is: How can I store this data into MySQL?



If it's just attributes, it's easy with a table in MySQL set up for EAV data. But if I have nested objects, I am quite lost as to how to store this. An important thing is that I'd have to be able to pivot the table and make queries like "SELECT * FROM entity WHERE A LIKE B etc.



I suspect I might have to split the nested entities into new tables of their own, then create one-to-many relationship between the "parent" and "child". However:
(1) I have no clue as to do this such that any json data can be accomodated. This probably means some program has to detect automatically a nested object.
(2) ALthough I am open to populating the data form a single json object into multiple tables, one representing each (nested) entity, I was thinking if it might be possible to populate everything into a single table in MySQL. This would prevent the need for creating new table schemas when the need arises.









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    0















    I have json data that have both nested objects and attributes. Eg of one json object:



    (After json_decode into an array:)



    Array
    (
    [attributename1] => attributevalue1
    [attributename2] => attributevalue2
    [NestedEntity1] => Array (

    [0] => Array (
    [attributename1] => attributevalue1
    [attributename2] => attributevalue2
    )
    [1] => Array (
    [attributename1] => attributevalue1
    [attributename2] => attributevalue2
    )
    [2] => Array (
    [attributename1] => attributevalue1
    [attributename2] => attributevalue2
    [NestedEntity1.2] => Array (

    [0] => Array (
    [attributename1] => attributevalue1
    [attributename2] => attributevalue2
    )
    [1] => Array (
    [attributename1] => attributevalue1
    [attributename2] => attributevalue2
    )

    )

    )

    ) )


    Note: entities can be further nested in nested entities



    My question is: How can I store this data into MySQL?



    If it's just attributes, it's easy with a table in MySQL set up for EAV data. But if I have nested objects, I am quite lost as to how to store this. An important thing is that I'd have to be able to pivot the table and make queries like "SELECT * FROM entity WHERE A LIKE B etc.



    I suspect I might have to split the nested entities into new tables of their own, then create one-to-many relationship between the "parent" and "child". However:
    (1) I have no clue as to do this such that any json data can be accomodated. This probably means some program has to detect automatically a nested object.
    (2) ALthough I am open to populating the data form a single json object into multiple tables, one representing each (nested) entity, I was thinking if it might be possible to populate everything into a single table in MySQL. This would prevent the need for creating new table schemas when the need arises.









    share







    New contributor




    forgodsakehold is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























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      0








      I have json data that have both nested objects and attributes. Eg of one json object:



      (After json_decode into an array:)



      Array
      (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      [NestedEntity1] => Array (

      [0] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      )
      [1] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      )
      [2] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      [NestedEntity1.2] => Array (

      [0] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      )
      [1] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      )

      )

      )

      ) )


      Note: entities can be further nested in nested entities



      My question is: How can I store this data into MySQL?



      If it's just attributes, it's easy with a table in MySQL set up for EAV data. But if I have nested objects, I am quite lost as to how to store this. An important thing is that I'd have to be able to pivot the table and make queries like "SELECT * FROM entity WHERE A LIKE B etc.



      I suspect I might have to split the nested entities into new tables of their own, then create one-to-many relationship between the "parent" and "child". However:
      (1) I have no clue as to do this such that any json data can be accomodated. This probably means some program has to detect automatically a nested object.
      (2) ALthough I am open to populating the data form a single json object into multiple tables, one representing each (nested) entity, I was thinking if it might be possible to populate everything into a single table in MySQL. This would prevent the need for creating new table schemas when the need arises.









      share







      New contributor




      forgodsakehold is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I have json data that have both nested objects and attributes. Eg of one json object:



      (After json_decode into an array:)



      Array
      (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      [NestedEntity1] => Array (

      [0] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      )
      [1] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      )
      [2] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      [NestedEntity1.2] => Array (

      [0] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      )
      [1] => Array (
      [attributename1] => attributevalue1
      [attributename2] => attributevalue2
      )

      )

      )

      ) )


      Note: entities can be further nested in nested entities



      My question is: How can I store this data into MySQL?



      If it's just attributes, it's easy with a table in MySQL set up for EAV data. But if I have nested objects, I am quite lost as to how to store this. An important thing is that I'd have to be able to pivot the table and make queries like "SELECT * FROM entity WHERE A LIKE B etc.



      I suspect I might have to split the nested entities into new tables of their own, then create one-to-many relationship between the "parent" and "child". However:
      (1) I have no clue as to do this such that any json data can be accomodated. This probably means some program has to detect automatically a nested object.
      (2) ALthough I am open to populating the data form a single json object into multiple tables, one representing each (nested) entity, I was thinking if it might be possible to populate everything into a single table in MySQL. This would prevent the need for creating new table schemas when the need arises.







      mysql eav





      share







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      share







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      asked 2 mins ago









      forgodsakeholdforgodsakehold

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      Check out our Code of Conduct.






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