Example of using a custom annotation for prefixing Index names

gistfile1.java

// Define the @IndexPrefixedByTableName annotation:

@Retention(value = RetentionPolicy.RUNTIME)
@Target(value = ElementType.FIELD)
public @interface IndexPrefixedByTableName {}



// In your model, for instance in a superclass of multiple models:

@IndexPrefixedByTableName
@Index(uniqueNames = @CompositeIndex(indexName = "_uuid", order = 0))
@Column(UUID)
protected String mUuid;



// Where Cupboard is built:

builder.registerEntityConverterFactory(new EntityConverterFactory() {

    @Override
    public <T> EntityConverter<T> create(Cupboard cupboard, Class<T> type) {
        final String tableName = type.getSimpleName();
        return new ReflectiveEntityConverter<T>(cupboard, type) {

            @Override
            protected Index getIndexes(Field field) {
                final Index indexes = super.getIndexes(field);
                IndexPrefixedByTableName indexPrefixedByTableName = field
                        .getAnnotation(IndexPrefixedByTableName.class);
                if (indexPrefixedByTableName != null) {
                    IndexBuilder indexBuilder = new IndexBuilder();
                    // Collect all non-unique indices
                    for (CompositeIndex compositeIndex : indexes.indexNames()) {
                        IndexBuilder.CompositeIndexBuilder compositeIndexBuilder = indexBuilder
                                .named(tableName + compositeIndex.indexName())
                                .order(compositeIndex.order());
                        if (compositeIndex.ascending()) {
                            compositeIndexBuilder.ascending();
                        } else {
                            compositeIndexBuilder.descending();
                        }
                    }
                    // Do the same for unique indices
                    for (CompositeIndex compositeIndex : indexes.uniqueNames()) {
                        IndexBuilder.CompositeIndexBuilder compositeIndexBuilder = indexBuilder
                                .named(tableName + compositeIndex.indexName())
                                .order(compositeIndex.order());
                        if (compositeIndex.ascending()) {
                            compositeIndexBuilder.ascending();
                        } else {
                            compositeIndexBuilder.descending();
                        }
                        compositeIndexBuilder.unique();
                    }
                    return indexBuilder.build();
                }
                return indexes;
            }

        };
    }

});