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cesinecesine
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Revert "Removed sample Activity stuff and made it into a bunch of static functions instead."
This reverts commit 38930bd.
1 parent 1d23077 commit d5e51ff

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lines changed

3 files changed

+190
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lines changed

‎AndroidManifest.xml

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Original file line numberDiff line numberDiff line change
@@ -6,5 +6,12 @@
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<uses-sdk android:minSdkVersion="3" android:targetSdkVersion="11"/>
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<application android:label="@string/app_name"
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android:debuggable="true">
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<activity android:name="com.google.code.p.leveldb.LevelDB"
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android:label="@string/app_name">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎assets/sample.json

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@@ -0,0 +1,47 @@
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{
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"_id": "33EE7A7F-45DF-40FD-B847-D46185A2AE0D",
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"_rev": "6-6993acafd1a0571e3e8c9f47471df84d",
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"utterance": "tusunayawan",
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"morphemes": "my morphemes",
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"gloss": "my gloss",
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"translation": "my translation",
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"grammaticalTags": "impulsative",
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"sessionID": 0,
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"status": {
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"statuses": [
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{
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"id": 1,
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"label": "Checked"
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},
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{
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"id": 2,
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"label": "To be checked",
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"selected": true
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},
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{
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"id": 3,
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"label": "Deleted"
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}
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],
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"active": 0,
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"defaultStatus": 0
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},
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"datumField": {
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"sessionID": 0,
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"user": "User",
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"informant": "",
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"language": "Language",
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"languageFamily": "Family",
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"dialect": "",
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"date": "Mon Jun 04 2012 16:07:24 GMT-0400 (EDT)",
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"goal": ""
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},
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"datumTag": {
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"script": "",
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"context": "",
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"semanticDenotation": "",
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"ipa": "",
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"segmentation": "tusu-naya-wa-n",
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"other": ""
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}
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}

‎src/com/google/code/p/leveldb/LevelDB.java

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@@ -15,7 +15,133 @@
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*/
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package com.google.code.p.leveldb;
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public class LevelDB {
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.Random;
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import org.json.JSONException;
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import org.json.JSONObject;
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import android.app.Activity;
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import android.content.res.AssetManager;
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import android.widget.TextView;
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import android.widget.Toast;
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import android.os.Bundle;
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public class LevelDB extends Activity {
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String mDBdir;
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/** Called when the activity is first created. */
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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/*
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* Use the files dir to store the database /data/data/package..../db
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*/
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mDBdir = this.getFilesDir().getAbsolutePath() + File.separator + "db";
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new File(mDBdir).mkdirs();
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}
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@Override
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protected void onResume() {
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/*
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* Sample Database code: Open the database using the path to its
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* directory Insert some keys, Delete a key, Create a TextView and show
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* the value of a key retrieved from the DB.
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*/
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dbDestroy(mDBdir);
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dbOpen(mDBdir);
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dbPut("firstkey", "this is the value of the first key");
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dbPut("secondkey", "this is the value of the first key");
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dbPut("keyToDelete",
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"this is the value of the key that i want to delete");
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dbPut("fourthkey", "this is the value of the fourth key");
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dbDelete("keyToDelete");
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TextView tv = new TextView(this);
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tv.setText(dbGet("fourthkey"));
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setContentView(tv);
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ArrayList<String> keystoquery = new ArrayList<String>();
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try {
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AssetManager assetManager = getAssets();
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InputStream in = assetManager.open("sample.json");
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BufferedReader sourcefile = new BufferedReader(
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new InputStreamReader(in, "UTF-8"));
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String contents = "";
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String line = "";
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while ((line = sourcefile.readLine()) != null) {
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contents = contents + "\n" + line;
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}
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sourcefile.close();
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JSONObject json = new JSONObject(contents);
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Iterator<String> keys = json.keys();
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while (keys.hasNext()) {
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String key = (String) keys.next();
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keystoquery.add(key);
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dbPut(key, json.get(key).toString());
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}
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int j = json.length() - 1;
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tv.setText("element" + j);
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setContentView(tv);
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} catch (IOException e) {
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Toast.makeText(this, "File read problem" + e.getLocalizedMessage(),
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Toast.LENGTH_LONG).show();
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tv.setText("File read problem" + e.getLocalizedMessage());
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setContentView(tv);
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} catch (JSONException e) {
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Toast.makeText(this, "Json problem" + e.getLocalizedMessage(),
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Toast.LENGTH_LONG).show();
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tv.setText("JSON problem" + e.getLocalizedMessage());
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setContentView(tv);
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}
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/*
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* Query entries randomly
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*/
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long startime = System.currentTimeMillis();
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int maxkey = keystoquery.size() - 1;
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int querycount = 1000;
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Random randomGenerator = new Random();
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for (int k = 0; k < querycount; k++) {
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int randomKey = randomGenerator.nextInt(maxkey);
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String it = dbGet(keystoquery.get(randomKey));
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}
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long endtime = System.currentTimeMillis();
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long querytime = (endtime - startime);
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tv.setText("Random quering of " + querycount
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+ " entries took this many miliseconds: " + querytime);
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setContentView(tv);
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super.onResume();
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}
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private String readInFile(String filePath) throws IOException {
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File currentFile = new File(filePath);
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BufferedReader sourcefile = new BufferedReader(new InputStreamReader(
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new FileInputStream(currentFile), "UTF-8"));
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String contents = "";
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String line = "";
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while ((line = sourcefile.readLine()) != null) {
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contents = contents + "\n" + line;
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}
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sourcefile.close();
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return contents;
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}
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/*
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* Methods which wrap LevelDB calls, see jni/main.cc for details
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*/
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static {
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System.loadLibrary("leveldb");
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}
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@Override
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protected void onPause() {
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super.onPause();
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/*
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* Close the db in the onPause to not waste memory
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*/
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dbClose(mDBdir);
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}
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}

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