package com.external.activeandroid;
/*
* Copyright (C) 2010 Michael Pardo
*
* 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.
*/
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import com.external.activeandroid.annotation.Column;
import com.external.activeandroid.query.Delete;
import com.external.activeandroid.query.Select;
import com.external.activeandroid.serializer.TypeSerializer;
import com.external.activeandroid.util.Log;
import com.external.activeandroid.util.ReflectionUtils;
import java.lang.reflect.Field;
import java.util.List;
@SuppressWarnings("unchecked")
public abstract class Model {
//////////////////////////////////////////////////////////////////////////////////////
// PRIVATE MEMBERS
//////////////////////////////////////////////////////////////////////////////////////
@Column(name = "Id")
private Long mId = null;
private TableInfo mTableInfo;
//////////////////////////////////////////////////////////////////////////////////////
// CONSTRUCTORS
//////////////////////////////////////////////////////////////////////////////////////
public Model() {
mTableInfo = Cache.getTableInfo(getClass());
Cache.addEntity(this);
}
//////////////////////////////////////////////////////////////////////////////////////
// PUBLIC METHODS
//////////////////////////////////////////////////////////////////////////////////////
public final Long getId() {
return mId;
}
public final void delete() {
Cache.openDatabase().delete(mTableInfo.getTableName(), "Id=?", new String[] { getId().toString() });
Cache.removeEntity(this);
}
public final void clear()
{
Cache.openDatabase().delete(mTableInfo.getTableName(),null,null);
}
public final void save() {
final SQLiteDatabase db = Cache.openDatabase();
final ContentValues values = new ContentValues();
for (Field field : mTableInfo.getFields()) {
final String fieldName = mTableInfo.getColumnName(field);
Class<?> fieldType = field.getType();
field.setAccessible(true);
try {
Object value = field.get(this);
if (value != null) {
final TypeSerializer typeSerializer = Cache.getParserForType(fieldType);
if (typeSerializer != null) {
// serialize data
value = typeSerializer.serialize(value);
// set new object type
if (value != null) {
fieldType = value.getClass();
// check that the serializer returned what it promised
if (!fieldType.equals(typeSerializer.getSerializedType())) {
Log.w(String.format("TypeSerializer returned wrong type: expected a %s but got a %s",
typeSerializer.getSerializedType(), fieldType));
}
}
}
}
// TODO: Find a smarter way to do this? This if block is necessary because we
// can't know the type until runtime.
if (value == null) {
values.putNull(fieldName);
}
else if (fieldType.equals(Byte.class) || fieldType.equals(byte.class)) {
values.put(fieldName, (Byte) value);
}
else if (fieldType.equals(Short.class) || fieldType.equals(short.class)) {
values.put(fieldName, (Short) value);
}
else if (fieldType.equals(Integer.class) || fieldType.equals(int.class)) {
values.put(fieldName, (Integer) value);
}
else if (fieldType.equals(Long.class) || fieldType.equals(long.class)) {
values.put(fieldName, (Long) value);
}
else if (fieldType.equals(Float.class) || fieldType.equals(float.class)) {
values.put(fieldName, (Float) value);
}
else if (fieldType.equals(Double.class) || fieldType.equals(double.class)) {
values.put(fieldName, (Double) value);
}
else if (fieldType.equals(Boolean.class) || fieldType.equals(boolean.class)) {
values.put(fieldName, (Boolean) value);
}
else if (fieldType.equals(Character.class) || fieldType.equals(char.class)) {
values.put(fieldName, value.toString());
}
else if (fieldType.equals(String.class)) {
values.put(fieldName, value.toString());
}
else if (fieldType.equals(Byte[].class) || fieldType.equals(byte[].class)) {
values.put(fieldName, (byte[]) value);
}
else if (ReflectionUtils.isModel(fieldType)) {
((Model)value).save();
values.put(fieldName, ((Model) value).getId());
}
else if (ReflectionUtils.isSubclassOf(fieldType, Enum.class)){
values.put(fieldName, ((Enum<?>) value).name());
}
// check unique value
final Column column = field.getAnnotation(Column.class);
if (column.unique())
{
List<Model> list = new Select().from(getClass()).where( fieldName+"= ?", value).execute();
if(list.size()>0)
{
mId = list.get(0).getId();
}
}
}
catch (IllegalArgumentException e) {
Log.e(e.getClass().getName(), e);
}
catch (IllegalAccessException e) {
Log.e(e.getClass().getName(), e);
}
}
if (mId == null) {
mId = db.insert(mTableInfo.getTableName(), null, values);
}
else {
values.remove("Id");
db.update(mTableInfo.getTableName(), values, "Id=" + mId, null);
}
}
// Convenience methods
public static void delete(Class<? extends Model> type, long id) {
new Delete().from(type).where("Id=?", id).execute();
}
public static <T extends Model> T load(Class<? extends Model> type, long id) {
return new Select().from(type).where("Id=?", id).executeSingle();
}
// Model population
public void loadFromCursor(Class<? extends Model> type, Cursor cursor) {
for (Field field : mTableInfo.getFields()) {
final String fieldName = mTableInfo.getColumnName(field);
Class<?> fieldType = field.getType();
final int columnIndex = cursor.getColumnIndex(fieldName);
if (columnIndex < 0) {
continue;
}
field.setAccessible(true);
try {
boolean columnIsNull = cursor.isNull(columnIndex);
TypeSerializer typeSerializer = Cache.getParserForType(fieldType);
Object value = null;
if (typeSerializer != null) {
fieldType = typeSerializer.getSerializedType();
}
// TODO: Find a smarter way to do this? This if block is necessary because we
// can't know the type until runtime.
if (columnIsNull) {
field = null;
}
else if (fieldType.equals(Byte.class) || fieldType.equals(byte.class)) {
value = cursor.getInt(columnIndex);
}
else if (fieldType.equals(Short.class) || fieldType.equals(short.class)) {
value = cursor.getInt(columnIndex);
}
else if (fieldType.equals(Integer.class) || fieldType.equals(int.class)) {
value = cursor.getInt(columnIndex);
}
else if (fieldType.equals(Long.class) || fieldType.equals(long.class)) {
value = cursor.getLong(columnIndex);
}
else if (fieldType.equals(Float.class) || fieldType.equals(float.class)) {
value = cursor.getFloat(columnIndex);
}
else if (fieldType.equals(Double.class) || fieldType.equals(double.class)) {
value = cursor.getDouble(columnIndex);
}
else if (fieldType.equals(Boolean.class) || fieldType.equals(boolean.class)) {
value = cursor.getInt(columnIndex) != 0;
}
else if (fieldType.equals(Character.class) || fieldType.equals(char.class)) {
value = cursor.getString(columnIndex).charAt(0);
}
else if (fieldType.equals(String.class)) {
value = cursor.getString(columnIndex);
}
else if (fieldType.equals(Byte[].class) || fieldType.equals(byte[].class)) {
value = cursor.getBlob(columnIndex);
}
else if (ReflectionUtils.isModel(fieldType)) {
final long entityId = cursor.getLong(columnIndex);
final Class<? extends Model> entityType = (Class<? extends Model>) fieldType;
Model entity = null;// Cache.getEntity(entityType, entityId);
if (entity == null) {
entity = new Select().from(entityType).where("Id=?", entityId).executeSingle();
}
value = entity;
}
else if (ReflectionUtils.isSubclassOf(fieldType, Enum.class)){
@SuppressWarnings("rawtypes")
final Class<? extends Enum> enumType = (Class<? extends Enum>) fieldType;
value=Enum.valueOf(enumType, cursor.getString(columnIndex));
}
// Use a deserializer if one is available
if (typeSerializer != null && !columnIsNull) {
value = typeSerializer.deserialize(value);
}
// Set the field value
if (value != null) {
field.set(this, value);
}
}
catch (IllegalArgumentException e) {
Log.e(e.getMessage());
}
catch (IllegalAccessException e) {
Log.e(e.getMessage());
}
catch (SecurityException e) {
Log.e(e.getMessage());
}
}
}
//////////////////////////////////////////////////////////////////////////////////////
// PROTECTED METHODS
//////////////////////////////////////////////////////////////////////////////////////
protected final <E extends Model> List<E> getMany(Class<? extends Model> type, String foreignKey) {
return new Select().from(type).where(Cache.getTableName(type) + "." + foreignKey + "=?", getId()).execute();
}
//////////////////////////////////////////////////////////////////////////////////////
// OVERRIDEN METHODS
//////////////////////////////////////////////////////////////////////////////////////
@Override
public boolean equals(Object obj) {
final Model other = (Model) obj;
return this.mId != null && (this.mTableInfo.getTableName().equals(other.mTableInfo.getTableName()))
&& (this.mId.equals(other.mId));
}
}