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 String f8 = "8";
        private int f9 = 9;


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            for (String name : new String[] {NAME, NAME2, NAME3}) {
                m.addDeleter(new Deleter(name, 0, "f1"));
                m.addDeleter(new Deleter(name, 0, "f6"));
                m.addDeleter(new Deleter(name, 0, "f7"));
            }
            return m;
        }

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        ArrayNameChange_Component_Renamed[] embed;
        ArrayNameChange_Component_Renamed embed2;


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addRenamer(new Renamer(NAME3, 0, NAME2));
            return m;
        }

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        int ff;


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

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        private String f3 = "3"; // converted field
        private String f4 = "4"; // new field


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addConverter(new Converter(NAME, 0, "f1", new IntToString()));
            m.addConverter(new Converter(NAME, 0, "f3", new IntToString()));
            return m;
        }

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        int f_long2int;
        long f_String2long;


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            m.addRenamer(new Renamer(NAME, 0, "pkeyint", "pkeyInteger"));
            m.addRenamer(new Renamer(NAME, 0, "kboolean", "kBoolean"));
            m.addRenamer(new Renamer(NAME, 0, "kbyte", "kByte"));
            m.addRenamer(new Renamer(NAME, 0, "kshort", "kShort"));
            m.addRenamer(new Renamer(NAME, 0, "kint", "kInteger"));
            m.addRenamer(new Renamer(NAME, 0, "klong", "kLong"));
            m.addRenamer(new Renamer(NAME, 0, "kfloat", "kFloat"));
            m.addRenamer(new Renamer(NAME, 0, "kdouble", "kDouble"));
            m.addRenamer(new Renamer(NAME, 0, "kchar", "kCharacter"));
            m.addRenamer(new Renamer(NAME2, 0, "kcomposite", "kComposite"));


            Conversion conv1 = new MyConversion1();
            Conversion conv2 = new MyConversion2();


            m.addConverter(new Converter(NAME, 0, "f_long2int", conv1));
            m.addConverter(new Converter(NAME, 0, "f_String2long", conv2));
            m.addConverter(new Converter(NAME2, 0, "f_long2Integer", conv1));
            m.addConverter(new Converter(NAME2, 0, "f_String2Long", conv2));
            return m;
        }

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        ConvertExample1_Address embed;


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            Converter converter = new Converter
                (ConvertExample1_Address.class.getName(), 0,
                 "zipCode", new ConvertExample1_Conversion());
            m.addConverter(converter);
            return m;
        }

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        ConvertExample2_Address address;


        @Override
        Mutations getMutations() {
            Mutations m = new Mutations();
            Converter converter = new Converter
                (ConvertExample2_Person.class.getName(), 0,
                 "address", new ConvertExample2_Conversion());
            m.addConverter(converter);
            return m;
        }

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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 superChanged = false;
        Map<String,String> allKeyNameMap = new HashMap<String,String>();


        /*
         * 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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                                        List<FieldInfo> newFields,
                                        boolean isOldSecKeyField,
                                        List<FieldInfo> otherNewFields,
                                        ComplexFormat newFormat,
                                        Evolver evolver) {
        Mutations mutations = evolver.getMutations();
        boolean evolveFailure = false;
        boolean evolveNeeded = false;
        boolean readerNeeded = false;
        List<FieldReader> fieldReaders = new ArrayList<FieldReader>();
        FieldReader currentReader = null;
        int prevNewFieldIndex = newFields.size();
        int newFieldsMatched = 0;


        /*
         * Add FieldReaders to the list in old field storage order, since that
         * is the order in which field values must be read.
         */
        fieldLoop:
        for (int oldFieldIndex = 0;
             oldFieldIndex < oldFields.size();
             oldFieldIndex += 1) {


            FieldInfo oldField = oldFields.get(oldFieldIndex);
            String oldName = oldField.getName();
            SecondaryKeyMetadata oldMeta = null;
            if (isOldSecKeyField) {
                oldMeta = clsMeta.getSecondaryKeys().get(oldName);
                assert oldMeta != null;
            }


            /* Get field mutations. */
            Renamer renamer = mutations.getRenamer
                (getClassName(), getVersion(), oldName);
            Deleter deleter = mutations.getDeleter
                (getClassName(), getVersion(), oldName);
            Converter converter = mutations.getConverter
                (getClassName(), getVersion(), oldName);
            if (deleter != null && (converter != null || renamer != null)) {
                evolver.addInvalidMutation
                    (this, newFormat, deleter,
                     "Field Deleter is not allowed along with a Renamer or " +

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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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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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