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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>Building the Android JDBC Driver</title>
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<p>Library Version 11.2.5.3</p>
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<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">Building the Android JDBC Driver</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="build_android_intro.html">Prev</a> </td>
<th width="60%" align="center">Chapter 4. Building Berkeley DB for Android</th>
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<div class="sect1" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h2 class="title" style="clear: both"><a id="build_android_jdbc"></a>Building the Android JDBC Driver</h2>
</div>
</div>
</div>
<p>
This section describes how to build and use the BDB JDBC driver
for Android. Note that the BDB JDBC driver cannot currently be
built on a Windows platform.
</p>
<div class="orderedlist">
<ol type="1">
<li>
<p>
Download and install the Android SDK. The installation
instructions can be found here:
</p>
<p>
<a class="ulink" href="http://developer.android.com/sdk/installing.html" target="_top">http://developer.android.com/sdk/installing.html</a>
</p>
</li>
<li>
<p>
Download and install the Android NDK. It can be found here:
</p>
<p>
<a class="ulink" href="http://developer.android.com/sdk/ndk/index.html" target="_top">http://developer.android.com/sdk/ndk/index.html</a>
</p>
</li>
<li>
<p>
Build the BDB JDBC libraries.
</p>
<div class="orderedlist">
<ol type="a">
<li>
<p>
If you do not already have it, download the
Berkeley DB package from here:
</p>
<p>
<a class="ulink" href="http://www.oracle.com/technetwork/database/berkeleydb/downloads/index.html" target="_top">http://www.oracle.com/technetwork/database/berkeleydb/downloads/index.html</a>
</p>
<p>
Note that you must be using a 5.3.x or higher
version of the product in order for these
instructions to work. Once you have the package,
unpack it:
</p>
<pre class="programlisting">$ tar zxvf db-x.y.z.tar.gz
$ cd db-x.y.z</pre>
<p>
Where <code class="literal">x.y.z</code> the major, minor,
and point release version of the Berkeley DB
distribution which you are using.
</p>
<p>
Also, note that in the following instructions, the
directory denoted by <code class="literal">db-x.y.z</code>,
above, is referred to as
<code class="literal"><db></code>.
</p>
</li>
<li>
<p>
Build an x86/x64 JDBC package. This is required
because the building process will generate target
files which are required to build Android NDK.
Also, the built JAR file can be imported by
eclipse, which will then convert it to the Android
Dalvik JAR format.
</p>
<p>
To do this, edit
<code class="literal"><db>/lang/sql/jdbc/SQLit/Database.java</code>
and replace all instances of
<code class="literal">System.loadLibrary("sqlite_jni")</code>
with
<code class="literal">System.loadLibrary("oracle-jdbc")</code>.
</p>
<p>
Once you have done this, configure and make the
library. The following example shows the minimum
configuration options that you need to use in order
to configure the Berkeley DB JDBC driver. For your
particular installation, other configuration
options might be interesting to you. See
<a class="xref" href="build_unix_conf.html" title="Configuring Berkeley DB">Configuring Berkeley DB</a>
and
<a class="xref" href="build_android_config.html" title="Android Configuration Options">Android Configuration Options</a>
for more information.
</p>
<pre class="programlisting">cd <db>/build_unix
../dist/configure --enable-jdbc && make</pre>
</li>
</ol>
</div>
</li>
<li>
<p>
Build the Android NDK:
</p>
<pre class="programlisting">$ cd <db>/build_android/jdbc/jni
$ <ndk-install-directory>/ndk-build </pre>
<p>
This results in the following required files:
</p>
<table class="simplelist" border="0" summary="Simple list">
<tr>
<td><db>/build_android/jdbc/libs/armeabi/liboracle-jdbc.so</td>
</tr>
<tr>
<td><db>/build_android/jdbc/libs/armeabi/dbsql</td>
</tr>
<tr>
<td><db>/build_unix/jdbc/sqlite.jar</td>
</tr>
</table>
</li>
</ol>
</div>
<p>
Having built the JDBC driver, you can now use it with your project.
You can do this using Eclipse and the ADT plugin, which you can get
from here:
</p>
<p>
<a class="ulink" href="http://developer.android.com/sdk/eclipse-adt.html" target="_top">http://developer.android.com/sdk/eclipse-adt.html</a>
</p>
<p>
To make sure everything is working:
</p>
<div class="orderedlist">
<ol type="1">
<li>
<p>
Start Eclipse and create an Android project. Use:
</p>
<div class="itemizedlist">
<ul type="disc">
<li>
<p>
<code class="literal">test_jdbc</code> as the Android project
name.
</p>
</li>
<li>
<p>
Create it as an Android 3.2 project.
</p>
</li>
<li>
<p>
For the package name, use
<code class="literal">example.jdbc</code>.
</p>
</li>
</ul>
</div>
</li>
<li>
<p>
This results in an empty code file. Copy and paste the
following example code into that file:
</p>
<pre class="programlisting">package example.testjdbc;
import SQLite.*;
import java.io.*;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import java.sql.*;
public class Test_jdbcActivity extends Activity {
/*
* This is the main entrance/body of our sample program. This
* example illustrates all of the major API usages.
*/
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv = new TextView(this);
tv.setText("App Started");
setContentView(tv);
System.out.println("Appstart: ");
String url =
"jdbc:sqlite://data/data/example.testjdbc/example.db";
Connection con;
String dropString = "drop table if exists COFFEES";
String createString;
createString = "create table COFFEES "
+ "(COF_NAME varchar(32), "
+ "SUP_ID int, " + "PRICE float, " + "SALES int, "
+ "TOTAL int)";
String insertString = "drop table COFFEES if exisits";
String query = "select COF_NAME, PRICE from COFFEES";
Statement stmt;
try {
Class.forName("SQLite.JDBCDriver");
} catch (java.lang.ClassNotFoundException e) {
System.err.print("ClassNotFoundException: ");
System.err.println(e.getMessage());
}
try {
con =
DriverManager.getConnection(url, "myLogin", "myPW");
stmt = con.createStatement();
stmt.executeUpdate(dropString);
stmt.executeUpdate(createString);
stmt.close();
stmt = con.createStatement();
stmt.executeUpdate("insert into COFFEES "
+ "values('Colombian', 00101, 7.99, 0, 0)");
stmt.executeUpdate("insert into COFFEES "
+ "values('French_Roast', 00049, 8.99, 0, 0)");
stmt.executeUpdate("insert into COFFEES "
+ "values('Espresso', 00150, 9.99, 0, 0)");
stmt.executeUpdate("insert into COFFEES "
+ "values('Colombian_Decaf', 00101, 8.99, 0, 0)");
stmt.executeUpdate("insert into COFFEES "
+ "values('French_Roast_Decaf', 00049, 9.99, 0, 0)");
ResultSet rs = stmt.executeQuery(query);
System.out.println("Coffee Break Coffees and Prices:");
while (rs.next()) {
String s = rs.getString("COF_NAME");
float f = rs.getFloat("PRICE");
System.out.println(s + " " + f);
}
stmt.close();
con.close();
} catch (SQLException ex) {
System.err.println("SQLException: " + ex.getMessage());
}
}
} </pre>
</li>
<li>
<p>
Copy the following files into place:
</p>
<pre class="programlisting">$ cd <workspace>/test_jdbc
$ mkdir -p libs/armeabi
$ cp -r <db>/build_android/jdbc/libs/armeabi/liboracle-jdbc.so \
libs/armeabi
$ cp -r <db>/build_unix/jdbc/sqlite.jar libs</pre>
</li>
<li>
<p>
Back in Eclipse, right click the project name, and select
the <code class="literal">refresh</code> option to reload the project
from the directory. The two new files that were copied into
place in the previous step are now included in the project
view.
</p>
</li>
<li>
<p>
Convert the JAR file to the Android Dalvik format:
</p>
<div class="orderedlist">
<ol type="a">
<li>
<p>
Right-click on your project.
</p>
</li>
<li>
<p>
Choose <code class="literal">Build Path -> Configure Build Path</code>
</p>
</li>
<li>
<p>
Click the <code class="literal">Libraries</code> tab.
</p>
</li>
<li>
<p>
Click <code class="literal">Add JARS</code>.
</p>
</li>
</ol>
</div>
</li>
<li>
<p>
Run the project:
</p>
<div class="orderedlist">
<ol type="a">
<li>
<p>
Choose <code class="literal">Property -> Android</code>
and select any one of the usable build targets.
</p>
</li>
<li>
<p>
Right click the project. Choose <code class="literal">Run As -> Android</code>
</p>
</li>
</ol>
</div>
</li>
<li>
<p>
Verify your installation. After a short pause (depending
on the speed of your system), the application logo is
displayed. Use the Android adb command line application to
make sure the application is running as expected:
</p>
<pre class="programlisting">$ cd <android-sdk>/platform-tools
$ ./adb logcat
I/System.out( 539): Appstart:
I/System.out( 539): Coffee Break Coffees and Prices:
I/System.out( 539): Colombian 7.99
I/System.out( 539): French_Roast 8.99
I/System.out( 539): Espresso 9.99
I/System.out( 539): Colombian_Decaf 8.99
I/System.out( 539): French_Roast_Decaf 9.99</pre>
<p>
You can also check if the database
(<code class="literal">example.db</code>) exists in the
emulator:
</p>
<pre class="programlisting">$ ./adb shell ls /data/data/example.testjdbc
example.db
example.db-journal
lib </pre>
<p>
Finally, check the database using the BDB SQL shell:
</p>
<pre class="programlisting">
$ ./adb push <db>/build_android/jdbc/libs/armeabi/dbsql \
/data/data/example.testjdbc
326 KB/s (1293760 bytes in 3.865s)
$ ./adb shell
root@android:/ # cd /data/data/example.testjdbc
root@android:/data/data/example.testjdbc # ./dbsql example.db
Berkeley DB 11g Release 2, library version 11.2.5.2.36
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
dbsql> .tables
COFFEES
dbsql> select * from COFFEES;
Colombian|101|7.99|0|0
French_Roast|49|8.99|0|0
Espresso|150|9.99|0|0
Colombian_Decaf|101|8.99|0|0
French_Roast_Decaf|49|9.99|0|0
dbsql> .quit </pre>
</li>
</ol>
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<td width="20%" align="center">
<a accesskey="u" href="build_android_intro.html">Up</a>
</td>
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</tr>
<tr>
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