[OFBiz] Dev - persisting dynamic entity created with ModelEntity
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[OFBiz] Dev - persisting dynamic entity created with ModelEntity
 
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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In reply to this post by Si Chen-2
Si, This is getting pretty deep into the Entity Engine code. There are some entity editing JSPs in WebTools (with no links to them anymore, we aren't keeping them up to date) but there is some code there that creates and registers new entity definitions. Still, this seems a little bit extreme no matter what you are trying to do, and I'm still not sure what that is or how this might fit in... Perhaps there is a better way? -David On Aug 14, 2005, at 2:20 PM, Si Chen wrote: > David, > > Thanks for all your help so far. I'm able to create the model > entity but delegator.makeValue(...) does not recognize it. > > To create it I have done: > transposedSurvey = new ModelEntity(); > transposedSurvey.setEntityName(entityName); > transposedSurvey.addField(new ModelField("surveyResponseId", "id- > ne", "surveyResponseId", true)); > etc. etc. > > And then I am able to use .getAllFieldNames() to list all the > fields of my model entity. Then I did this, similar to the > checkdb.jsp to, to update my db: > fieldsToRepair = new ArrayList(); > messages = new LinkedList(); > helperName = delegator.getGroupHelperName(groupName); > dbUtil = new DatabaseUtil(helperName); > modelEntities = UtilMisc.toMap(entityName, transposedSurvey); > dbUtil.checkDb(modelEntities, fieldsToRepair, messages, true, true, > true); > > But now, trying to use delegator.makeValue(...), I get an > "Entity .... is not a valid entity" or similar error, indicating > that the delegator does not recognize the model entity I've created. > > transposedResponses.add(delegator.makeValue > (transposedSurvey.getEntityName(), responseValues)); > > Have I missed a step in actually registering the model entity with > the delegator, or did the DatabaseUtil.checkDb do that? Or, is it > possibly to create a GenericValue directly from a ModelEntity > without adding it to the database? > Thanks.... > > Si > > PS This is a fun project I'm playing with. The idea is to > transpose the normalized rows of a survey's response answers into a > column format, with each column being a question of a survey and > each row being all the answers of a response. I'll post it when I > get it all to work... :) > > David E. Jones wrote: > > >> >> If I remember right the Map is a Map of all ModelEntity objects >> for all entities, for cases where things refer to other things, >> like foreign keys and such. >> >> There is a main method that does the check/update of the database >> and it gets all of this stuff ready, and is called by the >> delegator on init if setup that way, it's also called in the >> check/update db JSP in webtools, which would be another good >> place to look for an example. >> >> -David >> >> >> On Aug 9, 2005, at 1:59 PM, Si Chen wrote: >> >> >>> That does make sense. >>> >>> Is DatabaseUtil.createTable the best method to use? >>> >>> I saw it had a Map of modelEntities. Is this a Map of relation- >>> type and related model entities? >>> >>> Si >>> >>> David E. Jones wrote: >>> >>> >>> >>>> >>>> No, it doesn't do anything like that, would be quite the >>>> performance overhead... >>>> >>>> You can use the methods in the DatabaseUtil class to do this, >>>> that is where the chech/update database stuff is, and all the >>>> db maintenance routines. >>>> >>>> -David >>>> >>>> >>>> On Aug 8, 2005, at 9:03 PM, Si Chen wrote: >>>> >>>> >>>> >>>> >>>> >>>>> Meaning: do I need to do something to get the delegator to >>>>> create the table after creating the ModelEntity, or does >>>>> a .create() or .makeValue() cause it first to check the >>>>> database and, if the table is not there, create it based on >>>>> the ModelEntity as well? >>>>> >>>>> Si Chen wrote: >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>> Hi. >>>>>> >>>>>> If I create a dynamic entity using the ModelEntity >>>>>> constructor, how do I persist it in the database? Or, are >>>>>> they automatically persisted? >>>>>> >>>>>> Thanks, >>>>>> >>>>>> Si >>>>>> >>>>>> _______________________________________________ >>>>>> Dev mailing list >>>>>> [hidden email] >>>>>> http://lists.ofbiz.org/mailman/listinfo/dev >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> _______________________________________________ >>>>> Dev mailing list >>>>> [hidden email] >>>>> http://lists.ofbiz.org/mailman/listinfo/dev >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> Dev mailing list >>>> [hidden email] >>>> http://lists.ofbiz.org/mailman/listinfo/dev >>>> >>>> >>>> >>> _______________________________________________ >>> Dev mailing list >>> [hidden email] >>> http://lists.ofbiz.org/mailman/listinfo/dev >>> >>> >> >> >> _______________________________________________ >> Dev mailing list >> [hidden email] >> http://lists.ofbiz.org/mailman/listinfo/dev >> >> > _______________________________________________ > Dev mailing list > [hidden email] > http://lists.ofbiz.org/mailman/listinfo/dev > _______________________________________________ Dev mailing list [hidden email] http://lists.ofbiz.org/mailman/listinfo/dev |
smime.p7s (3K)
Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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No, it's not really meant to be used this way. Entities are usually designed in advance rather than created on the fly. Database tables are usually used this way too, though it is certainly possible to create temporary tables and such and internally databases do this all the time, it's just not something we have really wanted to do much in our applications. Still, I imagine it's interesting (and maybe even fun?) to play with... We could certainly create some additions to the Entity Engine to make this easier, as right now it's really meant to by done as an internal operation. -David On Aug 15, 2005, at 11:02 AM, Si Chen wrote: > Well, yes, there are easier ways to do it, I'm sure. I was just > hoping to learn something new along the way, ie how to create and > persist new entities in the code. I guess it's not within the > normal sphere of what the entity engine is to be used for? > > Si > > David E. Jones wrote: > > >> >> Si, >> >> This is getting pretty deep into the Entity Engine code. There >> are some entity editing JSPs in WebTools (with no links to them >> anymore, we aren't keeping them up to date) but there is some >> code there that creates and registers new entity definitions. >> >> Still, this seems a little bit extreme no matter what you are >> trying to do, and I'm still not sure what that is or how this >> might fit in... Perhaps there is a better way? >> >> -David >> >> >> On Aug 14, 2005, at 2:20 PM, Si Chen wrote: >> >> >>> David, >>> >>> Thanks for all your help so far. I'm able to create the model >>> entity but delegator.makeValue(...) does not recognize it. >>> >>> To create it I have done: >>> transposedSurvey = new ModelEntity(); >>> transposedSurvey.setEntityName(entityName); >>> transposedSurvey.addField(new ModelField("surveyResponseId", "id- >>> ne", "surveyResponseId", true)); >>> etc. etc. >>> >>> And then I am able to use .getAllFieldNames() to list all the >>> fields of my model entity. Then I did this, similar to the >>> checkdb.jsp to, to update my db: >>> fieldsToRepair = new ArrayList(); >>> messages = new LinkedList(); >>> helperName = delegator.getGroupHelperName(groupName); >>> dbUtil = new DatabaseUtil(helperName); >>> modelEntities = UtilMisc.toMap(entityName, transposedSurvey); >>> dbUtil.checkDb(modelEntities, fieldsToRepair, messages, true, >>> true, true); >>> >>> But now, trying to use delegator.makeValue(...), I get an >>> "Entity .... is not a valid entity" or similar error, indicating >>> that the delegator does not recognize the model entity I've created. >>> >>> transposedResponses.add(delegator.makeValue >>> (transposedSurvey.getEntityName(), responseValues)); >>> >>> Have I missed a step in actually registering the model entity >>> with the delegator, or did the DatabaseUtil.checkDb do that? >>> Or, is it possibly to create a GenericValue directly from a >>> ModelEntity without adding it to the database? >>> Thanks.... >>> >>> Si >>> >>> PS This is a fun project I'm playing with. The idea is to >>> transpose the normalized rows of a survey's response answers into >>> a column format, with each column being a question of a survey >>> and each row being all the answers of a response. I'll post it >>> when I get it all to work... :) >>> >>> David E. Jones wrote: >>> >>> >>> >>>> >>>> If I remember right the Map is a Map of all ModelEntity objects >>>> for all entities, for cases where things refer to other >>>> things, like foreign keys and such. >>>> >>>> There is a main method that does the check/update of the >>>> database and it gets all of this stuff ready, and is called by >>>> the delegator on init if setup that way, it's also called in >>>> the check/update db JSP in webtools, which would be another >>>> good place to look for an example. >>>> >>>> -David >>>> >>>> >>>> On Aug 9, 2005, at 1:59 PM, Si Chen wrote: >>>> >>>> >>>> >>>>> That does make sense. >>>>> >>>>> Is DatabaseUtil.createTable the best method to use? >>>>> >>>>> I saw it had a Map of modelEntities. Is this a Map of >>>>> relation- type and related model entities? >>>>> >>>>> Si >>>>> >>>>> David E. Jones wrote: >>>>> >>>>> >>>>> >>>>> >>>>>> >>>>>> No, it doesn't do anything like that, would be quite the >>>>>> performance overhead... >>>>>> >>>>>> You can use the methods in the DatabaseUtil class to do this, >>>>>> that is where the chech/update database stuff is, and all >>>>>> the db maintenance routines. >>>>>> >>>>>> -David >>>>>> >>>>>> >>>>>> On Aug 8, 2005, at 9:03 PM, Si Chen wrote: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>> Meaning: do I need to do something to get the delegator to >>>>>>> create the table after creating the ModelEntity, or does >>>>>>> a .create() or .makeValue() cause it first to check the >>>>>>> database and, if the table is not there, create it based >>>>>>> on the ModelEntity as well? >>>>>>> >>>>>>> Si Chen wrote: >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>> Hi. >>>>>>>> >>>>>>>> If I create a dynamic entity using the ModelEntity >>>>>>>> constructor, how do I persist it in the database? Or, >>>>>>>> are they automatically persisted? >>>>>>>> >>>>>>>> Thanks, >>>>>>>> >>>>>>>> Si >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Dev mailing list >>>>>>>> [hidden email] >>>>>>>> http://lists.ofbiz.org/mailman/listinfo/dev >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> _______________________________________________ >>>>>>> Dev mailing list >>>>>>> [hidden email] >>>>>>> http://lists.ofbiz.org/mailman/listinfo/dev >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Dev mailing list >>>>>> [hidden email] >>>>>> http://lists.ofbiz.org/mailman/listinfo/dev >>>>>> >>>>>> >>>>>> >>>>>> >>>>> _______________________________________________ >>>>> Dev mailing list >>>>> [hidden email] >>>>> http://lists.ofbiz.org/mailman/listinfo/dev >>>>> >>>>> >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Dev mailing list >>>> [hidden email] >>>> http://lists.ofbiz.org/mailman/listinfo/dev >>>> >>>> >>>> >>> _______________________________________________ >>> Dev mailing list >>> [hidden email] >>> http://lists.ofbiz.org/mailman/listinfo/dev >>> >>> >> >> --------------------------------------------------------------------- >> --- >> >> _______________________________________________ >> Dev mailing list >> [hidden email] >> http://lists.ofbiz.org/mailman/listinfo/dev >> >> > _______________________________________________ > Dev mailing list > [hidden email] > http://lists.ofbiz.org/mailman/listinfo/dev > _______________________________________________ Dev mailing list [hidden email] http://lists.ofbiz.org/mailman/listinfo/dev |
Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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Re: [OFBiz] Dev - persisting dynamic entity created with ModelEntity
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