Question

我目前在我的Android应用程序中使用Ollie ORM。我想做一些架构迁移。

如果我查看this，我得出结论，我应该创建一个新类。我已经创建了迁移类，如下所示：

import ollie.Migration; 

public class MigrateToVersionTwo extends Migration {
    @Override
    public int getVersion() {
        return 2;
    }

   @Override
    public String[] getStatements() {
        return new String[]{
                "ALTER TABLE events ADD COLUMN test INTEGER;"
        };
    }
}

我也将database_version从1改为2。

但架构没有任何改变......我错过了什么？

如果您需要更多信息，请参阅AdapterHolderImpl.java类：

package ollie;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import ollie.adapter.BooleanAdapter;
import ollie.adapter.CalendarAdapter;
import ollie.adapter.SqlDateAdapter;
import ollie.adapter.UtilDateAdapter;
import ollie.internal.AdapterHolder;
import ollie.internal.ModelAdapter;

public final class AdapterHolderImpl
    implements AdapterHolder {
    private static final List<Migration> MIGRATIONS = new ArrayList<Migration>();
    private static final Map<Class<? extends Model>, ModelAdapter> MODEL_ADAPTERS = new HashMap<Class<? extends Model>, ModelAdapter>();
    private static final Map<Class, TypeAdapter> TYPE_ADAPTERS = new HashMap<Class, TypeAdapter>();

    static {
        MODEL_ADAPTERS.put(com.me.model.SafeZoneVO.class, new ollie.SafeZoneVO$$ModelAdapter());
        MODEL_ADAPTERS.put(com.me.model.EventVO.class, new ollie.EventVO$$ModelAdapter());
        MODEL_ADAPTERS.put(com.me.model.ContactVO.class, new ollie.ContactVO$$ModelAdapter());
        MODEL_ADAPTERS.put(com.me.model.User.class, new ollie.User$$ModelAdapter());
        MODEL_ADAPTERS.put(com.me.model.Place.class, new ollie.Place$$ModelAdapter());

        TYPE_ADAPTERS.put(java.util.Calendar.class, new CalendarAdapter());
        TYPE_ADAPTERS.put(java.util.Date.class, new UtilDateAdapter());
        TYPE_ADAPTERS.put(java.lang.Boolean.class, new BooleanAdapter());
        TYPE_ADAPTERS.put(java.sql.Date.class, new SqlDateAdapter());
    }

    public final List<? extends Migration> getMigrations() {
        return MIGRATIONS;
    }

    public final <T extends Model> ModelAdapter<T> getModelAdapter(Class<? extends Model> cls) {
        return MODEL_ADAPTERS.get(cls);
    }

    public final List<? extends ModelAdapter> getModelAdapters() {
        return new ArrayList(MODEL_ADAPTERS.values());
    }

    public final <D, S> TypeAdapter<D, S> getTypeAdapter(Class<D> cls) {
        return TYPE_ADAPTERS.get(cls);
    }
}

Answer 1

事实证明我必须使用最新版本（目前0.3.2-SNAPSHOT）。

所以，我将构建gradle更改为：

apt 'com.michaelpardo:ollie-compiler:0.3.2-SNAPSHOT'
compile 'com.michaelpardo:ollie:0.3.2-SNAPSHOT'

并为快照版本添加了存储库：

maven { url "https://oss.sonatype.org/content/repositories/snapshots/"}

如何使用Ollie进行模式迁移？

1 个答案: