Examples of org.datanucleus.store.appengine.DatastoreFieldManager

org.datanucleus.store.appengine.DatastoreFieldManager
FieldManager for converting app engine datastore entities into POJOs and vice-versa. Most of the complexity in this class is due to the fact that the datastore automatically promotes certain types: It promotes short/Short, int/Integer, and byte/Byte to long. It also promotes float/Float to double. Also, the datastore does not support char/Character. We've made the decision to promote this to long as well. We handle the conversion in both directions. At one point we let the datastore api do the conversion from pojos to {@link Entity Entities} but wethis proved problematic in the case where we return entities that were cached during insertion to avoid issuing a get(). In this case we then end up trying to construct a pojo from an {@link Entity} whose contents violate the datastore api invariants, and weend up with cast exceptions. So, we do the conversion ourselves, even though this duplicates logic in the ORM and the datastore api. @author Max Ross

    storeMgr.validateMetaDataForClass(acmd, clr);
    FieldValues fv = new FieldValues() {
      public void fetchFields(StateManager sm) {
        sm.replaceFields(
            acmd.getPKMemberPositions(),
            new DatastoreFieldManager(sm, storeMgr, entity, DatastoreFieldManager.Operation.READ));
      }
      public void fetchNonLoadedFields(StateManager sm) {
        sm.replaceNonLoadedFields(
            acmd.getPKMemberPositions(),
            new DatastoreFieldManager(sm, storeMgr, entity, DatastoreFieldManager.Operation.READ));
      }
      public FetchPlan getFetchPlanForLoading() {
        return fetchPlan;
      }
    };

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      ClassLoaderResolver clr, final DatastoreManager storeMgr, ObjectManager om) {
    storeMgr.validateMetaDataForClass(acmd, clr);
    FieldValues fv = new FieldValues() {
      public void fetchFields(StateManager sm) {
        sm.replaceFields(
            acmd.getPKMemberPositions(), new DatastoreFieldManager(
                sm, storeMgr, entity, DatastoreFieldManager.Operation.READ));
      }
      public void fetchNonLoadedFields(StateManager sm) {
      }
      public FetchPlan getFetchPlanForLoading() {

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    storeMgr.validateMetaDataForClass(acmd, clr);
    FieldValues fv = new FieldValues() {
      public void fetchFields(StateManager sm) {
        sm.replaceFields(
            acmd.getPKMemberPositions(),
            new DatastoreFieldManager(sm, storeMgr, entity, DatastoreFieldManager.Operation.READ));
      }
      public void fetchNonLoadedFields(StateManager sm) {
        sm.replaceNonLoadedFields(
            acmd.getPKMemberPositions(),
            new DatastoreFieldManager(sm, storeMgr, entity, DatastoreFieldManager.Operation.READ));
      }
      public FetchPlan getFetchPlanForLoading() {
        return fetchPlan;
      }
    };

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      ClassLoaderResolver clr, final DatastoreManager storeMgr, ObjectManager om) {
    storeMgr.validateMetaDataForClass(acmd, clr);
    FieldValues fv = new FieldValues() {
      public void fetchFields(StateManager sm) {
        sm.replaceFields(
            acmd.getPKMemberPositions(), new DatastoreFieldManager(
                sm, storeMgr, entity, DatastoreFieldManager.Operation.READ));
      }
      public void fetchNonLoadedFields(StateManager sm) {
      }
      public FetchPlan getFetchPlanForLoading() {

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    storeMgr.validateMetaDataForClass(acmd, clr);
    FieldValues fv = new FieldValues() {
      public void fetchFields(StateManager sm) {
        sm.replaceFields(
            acmd.getPKMemberPositions(),
            new DatastoreFieldManager(sm, storeMgr, entity, DatastoreFieldManager.Operation.READ));
      }
      public void fetchNonLoadedFields(StateManager sm) {
        sm.replaceNonLoadedFields(
            acmd.getPKMemberPositions(),
            new DatastoreFieldManager(sm, storeMgr, entity, DatastoreFieldManager.Operation.READ));
      }
      public FetchPlan getFetchPlanForLoading() {
        return fetchPlan;
      }
    };

View Full Code Here

      ClassLoaderResolver clr, final DatastoreManager storeMgr, ObjectManager om) {
    storeMgr.validateMetaDataForClass(acmd, clr);
    FieldValues fv = new FieldValues() {
      public void fetchFields(StateManager sm) {
        sm.replaceFields(
            acmd.getPKMemberPositions(), new DatastoreFieldManager(
                sm, storeMgr, entity, DatastoreFieldManager.Operation.READ));
      }
      public void fetchNonLoadedFields(StateManager sm) {
      }
      public FetchPlan getFetchPlanForLoading() {

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com.google.appengine.api.datastore.Key

com.google.appengine.api.datastore.Text

org.datanucleus.api.ApiAdapter

org.datanucleus.ClassLoaderResolver

org.datanucleus.metadata.AbstractClassMetaData

org.datanucleus.metadata.AbstractMemberMetaData

org.datanucleus.metadata.ColumnMetaData

org.datanucleus.ObjectManager

org.datanucleus.StateManager

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