SqlData.java

    /*
     * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
     *
     * 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 net.micode.notes.gtask.data;

    import android.content.ContentResolver;
    import android.content.ContentUris;
    import android.content.ContentValues;
    import android.content.Context;
    import android.database.Cursor;
    import android.net.Uri;
    import android.util.Log;

    import net.micode.notes.data.Notes;
    import net.micode.notes.data.Notes.DataColumns;
    import net.micode.notes.data.Notes.DataConstants;
    import net.micode.notes.data.Notes.NoteColumns;
    import net.micode.notes.data.NotesDatabaseHelper.TABLE;
    import net.micode.notes.gtask.exception.ActionFailureException;

    import org.json.JSONException;
    import org.json.JSONObject;

    public class SqlData {
        private static final String TAG = SqlData.class.getSimpleName();

        private static final int INVALID_ID = -99999;

        public static final String[] PROJECTION_DATA = new String[] {
                DataColumns.ID, DataColumns.MIME_TYPE, DataColumns.CONTENT, DataColumns.DATA1,
                DataColumns.DATA3
        };

        public static final int DATA_ID_COLUMN = 0;

        public static final int DATA_MIME_TYPE_COLUMN = 1;

        public static final int DATA_CONTENT_COLUMN = 2;

        public static final int DATA_CONTENT_DATA_1_COLUMN = 3;

        public static final int DATA_CONTENT_DATA_3_COLUMN = 4;

        private ContentResolver mContentResolver;

        private boolean mIsCreate;

        private long mDataId;

        private String mDataMimeType;

        private String mDataContent;

        private long mDataContentData1;

        private String mDataContentData3;

        private ContentValues mDiffDataValues;

        public SqlData(Context context) {
            mContentResolver = context.getContentResolver();
            mIsCreate = true;
            mDataId = INVALID_ID;
            mDataMimeType = DataConstants.NOTE;
            mDataContent = "";
            mDataContentData1 = 0;
            mDataContentData3 = "";
            mDiffDataValues = new ContentValues();
        }

        public SqlData(Context context, Cursor c) {
            mContentResolver = context.getContentResolver();
            mIsCreate = false;
            loadFromCursor(c);
            mDiffDataValues = new ContentValues();
        }

        private void loadFromCursor(Cursor c) {
            mDataId = c.getLong(DATA_ID_COLUMN);
            mDataMimeType = c.getString(DATA_MIME_TYPE_COLUMN);
            mDataContent = c.getString(DATA_CONTENT_COLUMN);
            mDataContentData1 = c.getLong(DATA_CONTENT_DATA_1_COLUMN);
            mDataContentData3 = c.getString(DATA_CONTENT_DATA_3_COLUMN);
        }

        public void setContent(JSONObject js) throws JSONException {
            long dataId = js.has(DataColumns.ID) ? js.getLong(DataColumns.ID) : INVALID_ID;
            if (mIsCreate || mDataId != dataId) {
                mDiffDataValues.put(DataColumns.ID, dataId);
            }
            mDataId = dataId;

            String dataMimeType = js.has(DataColumns.MIME_TYPE) ? js.getString(DataColumns.MIME_TYPE)
                    : DataConstants.NOTE;
            if (mIsCreate || !mDataMimeType.equals(dataMimeType)) {
                mDiffDataValues.put(DataColumns.MIME_TYPE, dataMimeType);
            }
            mDataMimeType = dataMimeType;

            String dataContent = js.has(DataColumns.CONTENT) ? js.getString(DataColumns.CONTENT) : "";
            if (mIsCreate || !mDataContent.equals(dataContent)) {
                mDiffDataValues.put(DataColumns.CONTENT, dataContent);
            }
            mDataContent = dataContent;

            long dataContentData1 = js.has(DataColumns.DATA1) ? js.getLong(DataColumns.DATA1) : 0;
            if (mIsCreate || mDataContentData1 != dataContentData1) {
                mDiffDataValues.put(DataColumns.DATA1, dataContentData1);
            }
            mDataContentData1 = dataContentData1;

            String dataContentData3 = js.has(DataColumns.DATA3) ? js.getString(DataColumns.DATA3) : "";
            if (mIsCreate || !mDataContentData3.equals(dataContentData3)) {
                mDiffDataValues.put(DataColumns.DATA3, dataContentData3);
            }
            mDataContentData3 = dataContentData3;
        }

        public JSONObject getContent() throws JSONException {
            if (mIsCreate) {
                Log.e(TAG, "it seems that we haven't created this in database yet");
                return null;
            }
            JSONObject js = new JSONObject();
            js.put(DataColumns.ID, mDataId);
            js.put(DataColumns.MIME_TYPE, mDataMimeType);
            js.put(DataColumns.CONTENT, mDataContent);
            js.put(DataColumns.DATA1, mDataContentData1);
            js.put(DataColumns.DATA3, mDataContentData3);
            return js;
        }

        public void commit(long noteId, boolean validateVersion, long version) {

            if (mIsCreate) {
                if (mDataId == INVALID_ID && mDiffDataValues.containsKey(DataColumns.ID)) {
                    mDiffDataValues.remove(DataColumns.ID);
                }

                mDiffDataValues.put(DataColumns.NOTE_ID, noteId);
                Uri uri = mContentResolver.insert(Notes.CONTENT_DATA_URI, mDiffDataValues);
                try {
                    mDataId = Long.valueOf(uri.getPathSegments().get(1));
                } catch (NumberFormatException e) {
                    Log.e(TAG, "Get note id error :" + e.toString());
                    throw new ActionFailureException("create note failed");
                }
            } else {
                if (mDiffDataValues.size() > 0) {
                    int result = 0;
                    if (!validateVersion) {
                        result = mContentResolver.update(ContentUris.withAppendedId(
                                Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues, null, null);
                    } else {
                        result = mContentResolver.update(ContentUris.withAppendedId(
                                Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues,
                                " ? in (SELECT " + NoteColumns.ID + " FROM " + TABLE.NOTE
                                        + " WHERE " + NoteColumns.VERSION + "=?)", new String[] {
                                        String.valueOf(noteId), String.valueOf(version)
                                });
                    }
                    if (result == 0) {
                        Log.w(TAG, "there is no update. maybe user updates note when syncing");
                    }
                }
            }

            mDiffDataValues.clear();
            mIsCreate = false;
        }

        public long getId() {
            return mDataId;
        }
    }