Examples of com.sleepycat.persist.evolve.Mutations

com.sleepycat.persist.evolve.Mutations
mutations... StoreConfig config = new StoreConfig(); config.setMutations(mutations); EntityStore store = new EntityStore(env, "myStore", config);
Mutations cause data conversion to occur lazily as instances are read from the store. The {@link EntityStore#evolve EntityStore.evolve} methodmay also be used to perform eager conversion.

Not all incompatible class changes can be handled via mutations. For example, complex refactoring may require a transformation that manipulates multiple entity instances at once. Such changes are not possible with mutations but can made by performing a store conversion.
@see com.sleepycat.persist.evolve Class Evolution @author Mark Hayes

        private static final String NAME2 =
            DeletedPersist3_AnnotRemoved_NoMutation.class.getName();


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addDeleter(new Deleter(NAME2, 0));
            return m;
        }

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            return 0;
        }


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addDeleter(new Deleter(NAME, 0));
            m.addDeleter(new Deleter(NAME2, 0));
            return m;
        }

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        private static final String NAME2 =
            DeletedPersist5_PersistToEntity_NoMutation.class.getName();


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addDeleter(new Deleter(NAME2, 0));
            return m;
        }

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            return 0;
        }


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addDeleter(new Deleter(NAME, 0));
            m.addDeleter(new Deleter(NAME2, 0));
            return m;
        }

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        @SecondaryKey(relate=ONE_TO_ONE)
        int skey = 88;


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addRenamer(new Renamer(NAME, 0, NAME2));
            return m;
        }

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        @SecondaryKey(relate=ONE_TO_ONE)
        int skey3;


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addConverter(new EntityConverter
                (NAME2, 0, new MyConversion(),
                 Collections.singleton("skey")));
            return m;
        }

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        int ff;


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addDeleter(new Deleter(NAME, 0));
            return m;
        }

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        DeleteSuperclass5_Embedded embed =
            new DeleteSuperclass5_Embedded();


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addDeleter(new Deleter(NAME3, 0));
            return m;
        }

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        boolean success = false;
        try {
            catalogData = readData(txn);
            mutations = catalogData.mutations;
            if (mutations == null) {
                mutations = new Mutations();
            }


            /*
             * When the beta version is detected, force a re-write of the
             * catalog and disallow class changes.  This brings the catalog up

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                 "Converter is required when a complex type is changed " +
                 "to a simple type or enum type");
            return false;
        }
        ComplexFormat newFormat = (ComplexFormat) newFormatParam;
        Mutations mutations = evolver.getMutations();
        boolean thisChanged = false;
        boolean hierarchyChanged = false;
        Map<String, String> allKeyNameMap = new HashMap<String, String>();


        /* The Evolver has already ensured that entities evolve to entities. */
        assert isEntity() == newFormat.isEntity();
        assert isEntity() == (entityMeta != null);
        assert newFormat.isEntity() == (newFormat.entityMeta != null);


        /*
         * Keep track of the old and new entity class names for use in deleting
         * and renaming secondary keys below.  If the oldEntityClass is
         * non-null this also signifies an entity class or subclass.  Note that
         * getEntityFormat cannot be called on a newly created format during
         * evolution because its super format property is not yet initialized.
         * [#16253]
         */
        String oldEntityClass;
        String newEntityClass;
        if (isEntity()) {
            oldEntityClass = getClassName();
            newEntityClass = newFormat.getClassName();
        } else {
            oldEntityClass = null;
            newEntityClass = null;
        }


        /*
         * Evolve all superclass formats, even when a deleted class appears in
         * the hierarchy.  This ensures that the super format's
         * getLatestVersion/getComplexLatest method can be used accurately
         * below.
         */
        for (ComplexFormat oldSuper = getComplexSuper();
             oldSuper != null;
             oldSuper = oldSuper.getComplexSuper()) {
            Converter converter = mutations.getConverter
                (oldSuper.getClassName(), oldSuper.getVersion(), null);
            if (converter != null) {
                evolver.addMissingMutation
                    (this, newFormatParam,
                     "Converter is required for this subclass when a " +

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Related Classes of com.sleepycat.persist.evolve.Mutations

com.sleepycat.persist.impl.ComplexFormat

com.sleepycat.persist.impl.PersistCatalog

com.sleepycat.persist.test.EvolveClasses$AllowChangeKeyMetadata

com.sleepycat.persist.test.EvolveClasses$AllowFieldAddDelete

com.sleepycat.persist.test.EvolveClasses$AllowFieldTypeChanges

com.sleepycat.persist.test.EvolveClasses$ArrayNameChange_Entity

com.sleepycat.persist.test.EvolveClasses$ConvertExample1_Entity

com.sleepycat.persist.test.EvolveClasses$ConvertExample2_Person

com.sleepycat.persist.test.EvolveClasses$ConvertExample3_Person

com.sleepycat.persist.test.EvolveClasses$ConvertExample4_Entity

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