Android example source code file (SQLiteDirectCursorDriver.java)

This example Android source code file (SQLiteDirectCursorDriver.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, cursor, database, override, sqlitecursor, sqlitecursordriver, sqlitedatabase, sqlitedirectcursordriver, sqlitequery, string

The SQLiteDirectCursorDriver.java Android example source code

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * 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 android.database.sqlite;

import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase.CursorFactory;

/**
 * A cursor driver that uses the given query directly.
 * 
 * @hide
 */
public class SQLiteDirectCursorDriver implements SQLiteCursorDriver {
    private String mEditTable; 
    private SQLiteDatabase mDatabase;
    private Cursor mCursor;
    private String mSql;
    private SQLiteQuery mQuery;

    public SQLiteDirectCursorDriver(SQLiteDatabase db, String sql, String editTable) {
        mDatabase = db;
        mEditTable = editTable;
        mSql = sql;
    }

    public Cursor query(CursorFactory factory, String[] selectionArgs) {
        // Compile the query
        SQLiteQuery query = new SQLiteQuery(mDatabase, mSql, 0, selectionArgs);

        try {
            // Arg binding
            int numArgs = selectionArgs == null ? 0 : selectionArgs.length;
            for (int i = 0; i < numArgs; i++) {
                query.bindString(i + 1, selectionArgs[i]);
            }

            // Create the cursor
            if (factory == null) {
                mCursor = new SQLiteCursor(mDatabase, this, mEditTable, query);
            } else {
                mCursor = factory.newCursor(mDatabase, this, mEditTable, query);
            }

            mQuery = query;
            query = null;
            return mCursor;
        } finally {
            // Make sure this object is cleaned up if something happens
            if (query != null) query.close();
        }
    }

    public void cursorClosed() {
        mCursor = null;
    }

    public void setBindArguments(String[] bindArgs) {
        final int numArgs = bindArgs.length;
        for (int i = 0; i < numArgs; i++) {
            mQuery.bindString(i + 1, bindArgs[i]);
        }
    }

    public void cursorDeactivated() {
        // Do nothing
    }

    public void cursorRequeried(Cursor cursor) {
        // Do nothing
    }

    @Override
    public String toString() {
        return "SQLiteDirectCursorDriver: " + mSql;
    }
}