org.droidparts.inner.converter.ModelConverter.java Source code

Introduction

Here is the source code for org.droidparts.inner.converter.ModelConverter.java

Source

/**
 * Copyright 2015 Alex Yanchenko
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 */
package org.droidparts.inner.converter;

import org.droidparts.inner.PersistUtils;
import org.droidparts.inner.TypeHelper;
import org.droidparts.model.Model;
import org.droidparts.persist.serializer.JSONSerializer;
import org.droidparts.persist.serializer.XMLSerializer;
import org.json.JSONObject;
import org.w3c.dom.Node;

import android.content.ContentValues;
import android.database.Cursor;

@SuppressWarnings("unchecked")
public class ModelConverter<M extends Model> extends Converter<M> {

    @Override
    public boolean canHandle(Class<?> cls) {
        return TypeHelper.isModel(cls) && !TypeHelper.isEntity(cls);
    }

    @Override
    public String getDBColumnType() {
        return BLOB;
    }

    @Override
    public <G1, G2> void putToContentValues(Class<M> valueType, Class<G1> genericArg1, Class<G2> genericArg2,
            ContentValues cv, String key, M val) throws Exception {
        byte[] arr = PersistUtils.toBytes(val);
        cv.put(key, arr);
    }

    @Override
    public <G1, G2> M readFromCursor(Class<M> valType, Class<G1> genericArg1, Class<G2> genericArg2, Cursor cursor,
            int columnIndex) throws Exception {
        M model = null;
        byte[] arr = cursor.getBlob(columnIndex);
        if (arr != null) {
            model = (M) PersistUtils.fromBytes(arr);
        }
        return model;
    }

    @Override
    public <G1, G2> void putToJSON(Class<M> valType, Class<G1> genericArg1, Class<G2> genericArg2, JSONObject obj,
            String key, M val) throws Exception {
        Class<M> cls = (Class<M>) val.getClass();
        JSONObject valStr = ((JSONSerializer<M>) getJSONSerializer(cls, null)).serialize(val);
        obj.put(key, valStr);
    }

    @Override
    public <G1, G2> M readFromJSON(Class<M> valType, Class<G1> genericArg1, Class<G2> genericArg2, JSONObject obj,
            String key) throws Exception {
        JSONObject src = obj.getJSONObject(key);
        return getJSONSerializer(valType, src).deserialize(src);
    }

    @Override
    public <G1, G2> M readFromXML(Class<M> valType, Class<G1> genericArg1, Class<G2> genericArg2, Node node,
            String nodeListItemTagHint) throws Exception {
        return getXMLSerializer(valType, node).deserialize(node);
    }

    @Override
    protected <G1, G2> M parseFromString(Class<M> valType, Class<G1> genericArg1, Class<G2> genericArg2, String str)
            throws Exception {
        JSONObject src = new JSONObject(str);
        return getJSONSerializer(valType, src).deserialize(src);
    }

    protected JSONSerializer<? extends M> getJSONSerializer(Class<M> valType, JSONObject src) throws Exception {
        return new JSONSerializer<M>(valType, null);
    }

    protected XMLSerializer<? extends M> getXMLSerializer(Class<M> valType, Node src) throws Exception {
        return new XMLSerializer<M>(valType, null);
    }

}