How to store a collection of strings in jdo apache isis without joins










0















I wanted to store a set of strings which are not available in any other table in the schema. For example,



I have a table with country_id, country_name and animals



The column animals need to be a Collection (Set or List) and the animals in the list are not available in any other table of the schema. They are just plain java strings. I went through the link here. But it only mentions the ways to store a collection of objects that are available as a column in another table. Any help would be much appreciated. Thanks in advance. Cheers!










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    0















    I wanted to store a set of strings which are not available in any other table in the schema. For example,



    I have a table with country_id, country_name and animals



    The column animals need to be a Collection (Set or List) and the animals in the list are not available in any other table of the schema. They are just plain java strings. I went through the link here. But it only mentions the ways to store a collection of objects that are available as a column in another table. Any help would be much appreciated. Thanks in advance. Cheers!










    share|improve this question
























      0












      0








      0








      I wanted to store a set of strings which are not available in any other table in the schema. For example,



      I have a table with country_id, country_name and animals



      The column animals need to be a Collection (Set or List) and the animals in the list are not available in any other table of the schema. They are just plain java strings. I went through the link here. But it only mentions the ways to store a collection of objects that are available as a column in another table. Any help would be much appreciated. Thanks in advance. Cheers!










      share|improve this question














      I wanted to store a set of strings which are not available in any other table in the schema. For example,



      I have a table with country_id, country_name and animals



      The column animals need to be a Collection (Set or List) and the animals in the list are not available in any other table of the schema. They are just plain java strings. I went through the link here. But it only mentions the ways to store a collection of objects that are available as a column in another table. Any help would be much appreciated. Thanks in advance. Cheers!







      jdo isis






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      asked Nov 15 '18 at 5:38









      Sathiya NarayananSathiya Narayanan

      15912




      15912






















          1 Answer
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          0














          Just use a JDO AttributeConverter, and the Collection field can be converted into a String for example (stored in a single column). As per the docs






          share|improve this answer























          • Thanks for the prompt reply. I tried using the class but I keep getting error that the package cannot be resolved. Which package should I use?

            – Sathiya Narayanan
            Nov 22 '18 at 3:41











          • It is part of JDO 3.2, so you need to be using that

            – Billy Frost
            Nov 22 '18 at 7:07











          • Thanks I will try it and accept your answer

            – Sathiya Narayanan
            Nov 22 '18 at 7:49











          • You will need to use Apache Isis 2.0.0-M1 or later, because that uses DN 5.x and JDO 3.2

            – Dan Haywood
            Dec 26 '18 at 10:37










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          1 Answer
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          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          0














          Just use a JDO AttributeConverter, and the Collection field can be converted into a String for example (stored in a single column). As per the docs






          share|improve this answer























          • Thanks for the prompt reply. I tried using the class but I keep getting error that the package cannot be resolved. Which package should I use?

            – Sathiya Narayanan
            Nov 22 '18 at 3:41











          • It is part of JDO 3.2, so you need to be using that

            – Billy Frost
            Nov 22 '18 at 7:07











          • Thanks I will try it and accept your answer

            – Sathiya Narayanan
            Nov 22 '18 at 7:49











          • You will need to use Apache Isis 2.0.0-M1 or later, because that uses DN 5.x and JDO 3.2

            – Dan Haywood
            Dec 26 '18 at 10:37















          0














          Just use a JDO AttributeConverter, and the Collection field can be converted into a String for example (stored in a single column). As per the docs






          share|improve this answer























          • Thanks for the prompt reply. I tried using the class but I keep getting error that the package cannot be resolved. Which package should I use?

            – Sathiya Narayanan
            Nov 22 '18 at 3:41











          • It is part of JDO 3.2, so you need to be using that

            – Billy Frost
            Nov 22 '18 at 7:07











          • Thanks I will try it and accept your answer

            – Sathiya Narayanan
            Nov 22 '18 at 7:49











          • You will need to use Apache Isis 2.0.0-M1 or later, because that uses DN 5.x and JDO 3.2

            – Dan Haywood
            Dec 26 '18 at 10:37













          0












          0








          0







          Just use a JDO AttributeConverter, and the Collection field can be converted into a String for example (stored in a single column). As per the docs






          share|improve this answer













          Just use a JDO AttributeConverter, and the Collection field can be converted into a String for example (stored in a single column). As per the docs







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 15 '18 at 18:38









          Billy FrostBilly Frost

          1,799198




          1,799198












          • Thanks for the prompt reply. I tried using the class but I keep getting error that the package cannot be resolved. Which package should I use?

            – Sathiya Narayanan
            Nov 22 '18 at 3:41











          • It is part of JDO 3.2, so you need to be using that

            – Billy Frost
            Nov 22 '18 at 7:07











          • Thanks I will try it and accept your answer

            – Sathiya Narayanan
            Nov 22 '18 at 7:49











          • You will need to use Apache Isis 2.0.0-M1 or later, because that uses DN 5.x and JDO 3.2

            – Dan Haywood
            Dec 26 '18 at 10:37

















          • Thanks for the prompt reply. I tried using the class but I keep getting error that the package cannot be resolved. Which package should I use?

            – Sathiya Narayanan
            Nov 22 '18 at 3:41











          • It is part of JDO 3.2, so you need to be using that

            – Billy Frost
            Nov 22 '18 at 7:07











          • Thanks I will try it and accept your answer

            – Sathiya Narayanan
            Nov 22 '18 at 7:49











          • You will need to use Apache Isis 2.0.0-M1 or later, because that uses DN 5.x and JDO 3.2

            – Dan Haywood
            Dec 26 '18 at 10:37
















          Thanks for the prompt reply. I tried using the class but I keep getting error that the package cannot be resolved. Which package should I use?

          – Sathiya Narayanan
          Nov 22 '18 at 3:41





          Thanks for the prompt reply. I tried using the class but I keep getting error that the package cannot be resolved. Which package should I use?

          – Sathiya Narayanan
          Nov 22 '18 at 3:41













          It is part of JDO 3.2, so you need to be using that

          – Billy Frost
          Nov 22 '18 at 7:07





          It is part of JDO 3.2, so you need to be using that

          – Billy Frost
          Nov 22 '18 at 7:07













          Thanks I will try it and accept your answer

          – Sathiya Narayanan
          Nov 22 '18 at 7:49





          Thanks I will try it and accept your answer

          – Sathiya Narayanan
          Nov 22 '18 at 7:49













          You will need to use Apache Isis 2.0.0-M1 or later, because that uses DN 5.x and JDO 3.2

          – Dan Haywood
          Dec 26 '18 at 10:37





          You will need to use Apache Isis 2.0.0-M1 or later, because that uses DN 5.x and JDO 3.2

          – Dan Haywood
          Dec 26 '18 at 10:37



















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