Now shows fares
This commit is contained in:
parent
43988a2ea4
commit
c72d07ce3a
@ -1,8 +1,8 @@
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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.dougkeen.bart"
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android:versionCode="8"
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android:versionName="1.0.3" >
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android:versionCode="9"
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android:versionName="1.1" >
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<uses-permission android:name="android.permission.INTERNET" />
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<uses-permission android:name="android.permission.WAKE_LOCK" />
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@ -1,13 +1,39 @@
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<?xml version="1.0" encoding="utf-8"?>
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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="fill_parent" android:layout_height="fill_parent"
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android:paddingLeft="5dp" android:paddingRight="5dp">
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<TextView android:id="@+id/originText" style="@style/FavoriteListingTextView"
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android:layout_alignParentTop="true" android:text="Origin" />
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<TextView style="@style/FavoriteListingTextView" android:text="to"
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android:layout_below="@id/originText" android:paddingLeft="15dp"
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android:paddingRight="8dp" android:id="@+id/to" />
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<TextView android:id="@+id/destinationText" style="@style/FavoriteListingTextView"
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android:layout_below="@id/originText" android:layout_toRightOf="@id/to"
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android:text="Destination" />
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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android:paddingLeft="5dp"
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android:paddingRight="5dp" >
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<TextView
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android:id="@+id/fareText"
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style="@style/FareTextView"
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android:layout_alignParentRight="true"
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android:layout_centerVertical="true"
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android:maxLines="3" />
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<TextView
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android:id="@+id/originText"
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style="@style/FavoriteListingTextView"
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android:layout_alignParentLeft="true"
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android:layout_alignParentTop="true"
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android:layout_toLeftOf="@id/fareText"
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android:text="Origin" />
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<TextView
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android:id="@+id/to"
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style="@style/FavoriteListingTextView"
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android:layout_below="@id/originText"
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android:paddingLeft="15dp"
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android:paddingRight="8dp"
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android:text="to" />
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<TextView
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android:id="@+id/destinationText"
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style="@style/FavoriteListingTextView"
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android:layout_below="@id/originText"
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android:layout_toLeftOf="@id/fareText"
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android:layout_toRightOf="@id/to"
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android:text="Destination" />
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</RelativeLayout>
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@ -18,6 +18,14 @@
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<item name="android:singleLine">true</item>
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</style>
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<style name="FareTextView">
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<item name="android:layout_width">wrap_content</item>
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<item name="android:layout_height">wrap_content</item>
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<item name="android:textSize">16dp</item>
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<item name="android:ellipsize">end</item>
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<item name="android:singleLine">true</item>
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</style>
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<style name="DepartureDestinationText">
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<item name="android:layout_width">wrap_content</item>
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<item name="android:layout_height">wrap_content</item>
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@ -11,4 +11,5 @@ public class Constants {
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public static final String MAP_URL = "http://m.bart.gov/images/global/system-map29.gif";
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public static final String TAG = "BartCatcher";
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public static final String API_KEY = "5LD9-IAYI-TRAT-MHHW";
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}
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46
src/com/dougkeen/bart/FareContentHandler.java
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46
src/com/dougkeen/bart/FareContentHandler.java
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@ -0,0 +1,46 @@
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package com.dougkeen.bart;
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import org.xml.sax.Attributes;
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import org.xml.sax.SAXException;
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import org.xml.sax.helpers.DefaultHandler;
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public class FareContentHandler extends DefaultHandler {
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public FareContentHandler() {
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super();
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}
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private String currentValue;
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private boolean isParsingTag;
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private String fare;
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public String getFare() {
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return fare;
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}
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@Override
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public void characters(char[] ch, int start, int length)
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throws SAXException {
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if (isParsingTag) {
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currentValue = new String(ch, start, length);
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}
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}
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@Override
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public void startElement(String uri, String localName, String qName,
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Attributes attributes) throws SAXException {
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if (localName.equals("fare")) {
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isParsingTag = true;
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}
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}
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@Override
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public void endElement(String uri, String localName, String qName)
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throws SAXException {
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if (localName.equals("fare")) {
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fare = "$" + currentValue;
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}
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isParsingTag = false;
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currentValue = null;
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}
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}
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@ -9,14 +9,8 @@ import java.util.List;
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import org.apache.commons.io.IOUtils;
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import org.apache.http.HttpResponse;
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import org.apache.http.HttpStatus;
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import org.apache.http.client.ClientProtocolException;
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import org.apache.http.client.HttpClient;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.client.methods.HttpUriRequest;
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import org.apache.http.conn.params.ConnManagerParams;
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import org.apache.http.impl.client.DefaultHttpClient;
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import org.apache.http.params.HttpConnectionParams;
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import org.apache.http.params.HttpParams;
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import org.xml.sax.SAXException;
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import android.os.AsyncTask;
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@ -29,10 +23,8 @@ public abstract class GetRealTimeDeparturesTask
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extends
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AsyncTask<GetRealTimeDeparturesTask.Params, Integer, RealTimeDepartures> {
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private static final int CONNECTION_TIMEOUT_MILLIS = 10000;
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private final static String API_KEY = "5LD9-IAYI-TRAT-MHHW";
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private final static String API_URL = "http://api.bart.gov/api/etd.aspx?cmd=etd&key="
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+ API_KEY + "&orig=%1$s&dir=%2$s";
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private final static String ETD_URL = "http://api.bart.gov/api/etd.aspx?cmd=etd&key="
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+ Constants.API_KEY + "&orig=%1$s&dir=%2$s";
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private final static int MAX_ATTEMPTS = 5;
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private Exception mException;
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@ -57,7 +49,7 @@ public abstract class GetRealTimeDeparturesTask
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int attemptNumber) {
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String xml = null;
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try {
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HttpUriRequest request = new HttpGet(String.format(API_URL,
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HttpUriRequest request = new HttpGet(String.format(ETD_URL,
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params.origin.abbreviation, mRoutes.get(0).getDirection()));
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EtdContentHandler handler = new EtdContentHandler(params.origin,
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@ -66,7 +58,7 @@ public abstract class GetRealTimeDeparturesTask
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return null;
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}
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HttpResponse response = executeWithRecovery(request);
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HttpResponse response = NetworkUtils.executeWithRecovery(request);
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if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
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throw new IOException("Server returned "
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@ -111,26 +103,6 @@ public abstract class GetRealTimeDeparturesTask
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}
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}
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private static HttpResponse executeWithRecovery(final HttpUriRequest request)
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throws IOException, ClientProtocolException {
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try {
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return getHttpClient().execute(request);
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} catch (IllegalStateException e) {
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// try again... this is a rare error
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return getHttpClient().execute(request);
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}
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}
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private static HttpClient getHttpClient() {
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HttpClient client = new DefaultHttpClient();
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final HttpParams params = client.getParams();
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HttpConnectionParams.setConnectionTimeout(params,
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CONNECTION_TIMEOUT_MILLIS);
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HttpConnectionParams.setSoTimeout(params, CONNECTION_TIMEOUT_MILLIS);
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ConnManagerParams.setTimeout(params, CONNECTION_TIMEOUT_MILLIS);
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return client;
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}
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public static class Params {
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public Params(Station origin, Station destination) {
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super();
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122
src/com/dougkeen/bart/GetRouteFareTask.java
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122
src/com/dougkeen/bart/GetRouteFareTask.java
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@ -0,0 +1,122 @@
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package com.dougkeen.bart;
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import java.io.IOException;
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import java.io.StringWriter;
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import java.io.UnsupportedEncodingException;
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import java.net.MalformedURLException;
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import org.apache.commons.io.IOUtils;
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import org.apache.http.HttpResponse;
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import org.apache.http.HttpStatus;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.client.methods.HttpUriRequest;
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import org.xml.sax.SAXException;
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import android.os.AsyncTask;
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import android.util.Log;
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import android.util.Xml;
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public abstract class GetRouteFareTask extends
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AsyncTask<GetRouteFareTask.Params, Integer, String> {
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private final static int MAX_ATTEMPTS = 5;
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private final static String FARE_URL = "http://api.bart.gov/api/sched.aspx?cmd=fare&date=today&key="
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+ Constants.API_KEY + "&orig=%1$s&dest=%2$s";
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private Exception mException;
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private String fare;
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@Override
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protected String doInBackground(Params... paramsArray) {
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Params params = paramsArray[0];
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if (!isCancelled()) {
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return getFareFromNetwork(params, 0);
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} else {
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return null;
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}
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}
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private String getFareFromNetwork(Params params, int attemptNumber) {
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String xml = null;
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try {
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HttpUriRequest request = new HttpGet(
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String.format(FARE_URL, params.origin.abbreviation,
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params.destination.abbreviation));
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FareContentHandler handler = new FareContentHandler();
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if (isCancelled()) {
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return null;
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}
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HttpResponse response = NetworkUtils.executeWithRecovery(request);
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if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
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throw new IOException("Server returned "
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+ response.getStatusLine().toString());
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}
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StringWriter writer = new StringWriter();
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IOUtils.copy(response.getEntity().getContent(), writer, "UTF-8");
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xml = writer.toString();
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if (xml.length() == 0) {
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throw new IOException("Server returned blank xml document");
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}
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Xml.parse(xml, handler);
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fare = handler.getFare();
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return fare;
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} catch (MalformedURLException e) {
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throw new RuntimeException(e);
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} catch (UnsupportedEncodingException e) {
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throw new RuntimeException(e);
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} catch (IOException e) {
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if (attemptNumber < MAX_ATTEMPTS - 1) {
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try {
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Log.w(Constants.TAG,
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"Attempt to contact server failed... retrying in 3s",
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e);
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Thread.sleep(3000);
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} catch (InterruptedException interrupt) {
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// Ignore... just go on to next attempt
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}
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return getFareFromNetwork(params, attemptNumber + 1);
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} else {
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mException = new Exception("Could not contact BART system", e);
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return null;
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}
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} catch (SAXException e) {
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mException = new Exception(
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"Could not understand response from BART system: " + xml, e);
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return null;
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}
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}
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public static class Params {
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public Params(Station origin, Station destination) {
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super();
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this.origin = origin;
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this.destination = destination;
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}
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public final Station origin;
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public final Station destination;
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}
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@Override
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protected void onPostExecute(String result) {
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if (result != null) {
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onResult(fare);
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} else {
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onError(mException);
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}
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}
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public abstract void onResult(String fare);
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public abstract void onError(Exception exception);
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}
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38
src/com/dougkeen/bart/NetworkUtils.java
Normal file
38
src/com/dougkeen/bart/NetworkUtils.java
Normal file
@ -0,0 +1,38 @@
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package com.dougkeen.bart;
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import java.io.IOException;
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import org.apache.http.HttpResponse;
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import org.apache.http.client.ClientProtocolException;
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import org.apache.http.client.HttpClient;
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import org.apache.http.client.methods.HttpUriRequest;
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import org.apache.http.conn.params.ConnManagerParams;
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import org.apache.http.impl.client.DefaultHttpClient;
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import org.apache.http.params.HttpConnectionParams;
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import org.apache.http.params.HttpParams;
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public class NetworkUtils {
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public static HttpClient getHttpClient() {
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HttpClient client = new DefaultHttpClient();
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final HttpParams params = client.getParams();
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HttpConnectionParams.setConnectionTimeout(params,
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NetworkUtils.CONNECTION_TIMEOUT_MILLIS);
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HttpConnectionParams.setSoTimeout(params, NetworkUtils.CONNECTION_TIMEOUT_MILLIS);
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ConnManagerParams.setTimeout(params, NetworkUtils.CONNECTION_TIMEOUT_MILLIS);
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return client;
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}
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public static HttpResponse executeWithRecovery(final HttpUriRequest request)
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throws IOException, ClientProtocolException {
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try {
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return getHttpClient().execute(request);
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} catch (IllegalStateException e) {
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// try again... this is a rare error
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return getHttpClient().execute(request);
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}
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}
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static final int CONNECTION_TIMEOUT_MILLIS = 10000;
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}
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@ -7,6 +7,8 @@ public class Route {
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private boolean requiresTransfer;
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private Station transferStation;
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private String direction;
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private String fare;
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private Long fareLastUpdated;
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public Station getOrigin() {
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return origin;
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@ -56,6 +58,22 @@ public class Route {
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this.direction = direction;
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}
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public String getFare() {
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return fare;
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}
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public void setFare(String fare) {
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this.fare = fare;
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}
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public Long getFareLastUpdated() {
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return fareLastUpdated;
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}
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public void setFareLastUpdated(Long fareLastUpdated) {
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this.fareLastUpdated = fareLastUpdated;
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}
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@Override
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public String toString() {
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StringBuilder builder = new StringBuilder();
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@ -71,6 +89,10 @@ public class Route {
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builder.append(transferStation);
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builder.append(", direction=");
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builder.append(direction);
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builder.append(", fare=");
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builder.append(fare);
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builder.append(", fareLastUpdated=");
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builder.append(fareLastUpdated);
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builder.append("]");
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return builder.toString();
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}
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@ -90,8 +112,7 @@ public class Route {
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int lineDestinationIndex = viaLine.stations
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.indexOf(lineDestination);
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return routeDestinationIndex >= 0
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&& ((originIndex <= routeDestinationIndex && routeDestinationIndex <= lineDestinationIndex)
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|| (originIndex >= routeDestinationIndex && routeDestinationIndex >= lineDestinationIndex));
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&& ((originIndex <= routeDestinationIndex && routeDestinationIndex <= lineDestinationIndex) || (originIndex >= routeDestinationIndex && routeDestinationIndex >= lineDestinationIndex));
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}
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}
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@ -1,10 +1,14 @@
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package com.dougkeen.bart;
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import java.util.Calendar;
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import java.util.TimeZone;
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import android.app.AlertDialog;
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import android.app.AlertDialog.Builder;
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import android.app.Dialog;
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import android.app.ListActivity;
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import android.app.AlertDialog.Builder;
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import android.content.ContentUris;
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import android.content.ContentValues;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.database.Cursor;
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@ -27,6 +31,9 @@ import com.dougkeen.bart.data.CursorUtils;
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import com.dougkeen.bart.data.RoutesColumns;
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public class RoutesListActivity extends ListActivity {
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private static final TimeZone PACIFIC_TIME = TimeZone
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.getTimeZone("America/Los_Angeles");
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private static final int DIALOG_DELETE_EVENT = 0;
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protected Cursor mQuery;
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@ -43,19 +50,31 @@ public class RoutesListActivity extends ListActivity {
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mQuery = managedQuery(Constants.FAVORITE_CONTENT_URI, new String[] {
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RoutesColumns._ID.string, RoutesColumns.FROM_STATION.string,
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RoutesColumns.TO_STATION.string }, null, null,
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RoutesColumns.TO_STATION.string, RoutesColumns.FARE.string,
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RoutesColumns.FARE_LAST_UPDATED.string }, null, null,
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RoutesColumns._ID.string);
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refreshFares();
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SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,
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R.layout.favorite_listing, mQuery, new String[] {
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RoutesColumns.FROM_STATION.string,
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RoutesColumns.TO_STATION.string }, new int[] {
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R.id.originText, R.id.destinationText });
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RoutesColumns.TO_STATION.string,
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RoutesColumns.FARE.string }, new int[] {
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R.id.originText, R.id.destinationText, R.id.fareText });
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adapter.setViewBinder(new ViewBinder() {
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public boolean setViewValue(View view, Cursor cursor,
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int columnIndex) {
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((TextView) view).setText(Station.getByAbbreviation(cursor
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.getString(columnIndex)).name);
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if (view.getId() == R.id.fareText) {
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String fare = cursor.getString(columnIndex);
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if (fare != null) {
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((TextView) view).setSingleLine(false);
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((TextView) view).setText("Fare:\n" + fare);
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}
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||||
} else {
|
||||
((TextView) view).setText(Station.getByAbbreviation(cursor
|
||||
.getString(columnIndex)).name);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
});
|
||||
@ -65,6 +84,52 @@ public class RoutesListActivity extends ListActivity {
|
||||
registerForContextMenu(getListView());
|
||||
}
|
||||
|
||||
private void refreshFares() {
|
||||
if (mQuery.moveToFirst()) {
|
||||
do {
|
||||
final Station orig = Station.getByAbbreviation(CursorUtils
|
||||
.getString(mQuery, RoutesColumns.FROM_STATION));
|
||||
final Station dest = Station.getByAbbreviation(CursorUtils
|
||||
.getString(mQuery, RoutesColumns.TO_STATION));
|
||||
final Long id = CursorUtils.getLong(mQuery, RoutesColumns._ID);
|
||||
final Long lastUpdateMillis = CursorUtils.getLong(mQuery,
|
||||
RoutesColumns.FARE_LAST_UPDATED);
|
||||
|
||||
Calendar now = Calendar.getInstance();
|
||||
Calendar lastUpdate = Calendar.getInstance();
|
||||
lastUpdate.setTimeInMillis(lastUpdateMillis);
|
||||
|
||||
now.setTimeZone(PACIFIC_TIME);
|
||||
lastUpdate.setTimeZone(PACIFIC_TIME);
|
||||
|
||||
// Update every day
|
||||
if (now.get(Calendar.DAY_OF_YEAR) != lastUpdate
|
||||
.get(Calendar.DAY_OF_YEAR)) {
|
||||
GetRouteFareTask fareTask = new GetRouteFareTask() {
|
||||
@Override
|
||||
public void onResult(String fare) {
|
||||
ContentValues values = new ContentValues();
|
||||
values.put(RoutesColumns.FARE.string, fare);
|
||||
values.put(RoutesColumns.FARE_LAST_UPDATED.string,
|
||||
System.currentTimeMillis());
|
||||
|
||||
getContentResolver()
|
||||
.update(ContentUris.withAppendedId(
|
||||
Constants.FAVORITE_CONTENT_URI, id),
|
||||
values, null, null);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onError(Exception exception) {
|
||||
// Ignore... we can do this later
|
||||
}
|
||||
};
|
||||
fareTask.execute(new GetRouteFareTask.Params(orig, dest));
|
||||
}
|
||||
} while (mQuery.moveToNext());
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onResume() {
|
||||
super.onResume();
|
||||
@ -72,6 +137,7 @@ public class RoutesListActivity extends ListActivity {
|
||||
.setText(R.string.favorite_routes);
|
||||
((TextView) findViewById(android.R.id.empty))
|
||||
.setText(R.string.empty_favorites_list_message);
|
||||
refreshFares();
|
||||
}
|
||||
|
||||
@Override
|
||||
|
@ -41,6 +41,10 @@ public class BartContentProvider extends ContentProvider {
|
||||
RoutesColumns.FROM_STATION.string);
|
||||
sFavoritesProjectionMap.put(RoutesColumns.TO_STATION.string,
|
||||
RoutesColumns.TO_STATION.string);
|
||||
sFavoritesProjectionMap.put(RoutesColumns.FARE.string,
|
||||
RoutesColumns.FARE.string);
|
||||
sFavoritesProjectionMap.put(RoutesColumns.FARE_LAST_UPDATED.string,
|
||||
RoutesColumns.FARE_LAST_UPDATED.string);
|
||||
}
|
||||
|
||||
private DatabaseHelper mDatabaseHelper;
|
||||
@ -65,8 +69,7 @@ public class BartContentProvider extends ContentProvider {
|
||||
|
||||
@Override
|
||||
public Cursor query(Uri uri, String[] projection, String selection,
|
||||
String[] selectionArgs,
|
||||
String sortOrder) {
|
||||
String[] selectionArgs, String sortOrder) {
|
||||
SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
|
||||
|
||||
SQLiteDatabase db = mDatabaseHelper.getReadableDatabase();
|
||||
@ -104,8 +107,6 @@ public class BartContentProvider extends ContentProvider {
|
||||
|
||||
@Override
|
||||
public Uri insert(Uri uri, ContentValues initialValues) {
|
||||
// TODO: Hook this up to the REST service?
|
||||
|
||||
ContentValues values;
|
||||
if (initialValues != null) {
|
||||
values = new ContentValues(initialValues);
|
||||
@ -127,9 +128,7 @@ public class BartContentProvider extends ContentProvider {
|
||||
new String[] {
|
||||
values.getAsString(RoutesColumns.FROM_STATION.string),
|
||||
values.getAsString(RoutesColumns.TO_STATION.string) },
|
||||
null,
|
||||
null,
|
||||
null);
|
||||
null, null, null);
|
||||
try {
|
||||
if (cursor.moveToFirst()) {
|
||||
rowId = cursor.getLong(0);
|
||||
@ -158,8 +157,24 @@ public class BartContentProvider extends ContentProvider {
|
||||
@Override
|
||||
public int update(Uri uri, ContentValues values, String where,
|
||||
String[] whereArgs) {
|
||||
SQLiteDatabase db = mDatabaseHelper.getWritableDatabase();
|
||||
|
||||
// Validate the requested uri
|
||||
int match = sUriMatcher.match(uri);
|
||||
if (match == FAVORITE_ID) {
|
||||
String favoriteId = uri.getPathSegments().get(1);
|
||||
int count = db.update(
|
||||
DatabaseHelper.FAVORITES_TABLE_NAME,
|
||||
values,
|
||||
RoutesColumns._ID
|
||||
+ " = "
|
||||
+ favoriteId
|
||||
+ (!TextUtils.isEmpty(where) ? " AND (" + where
|
||||
+ ')' : ""), whereArgs);
|
||||
getContext().getContentResolver().notifyChange(uri, null);
|
||||
return count;
|
||||
}
|
||||
return 0;
|
||||
// No updating supported yet
|
||||
}
|
||||
|
||||
@Override
|
||||
@ -173,8 +188,10 @@ public class BartContentProvider extends ContentProvider {
|
||||
whereArgs);
|
||||
} else if (match == FAVORITE_ID) {
|
||||
String favoriteId = uri.getPathSegments().get(1);
|
||||
count = db.delete(DatabaseHelper.FAVORITES_TABLE_NAME,
|
||||
RoutesColumns._ID + " = "
|
||||
count = db.delete(
|
||||
DatabaseHelper.FAVORITES_TABLE_NAME,
|
||||
RoutesColumns._ID
|
||||
+ " = "
|
||||
+ favoriteId
|
||||
+ (!TextUtils.isEmpty(where) ? " AND (" + where
|
||||
+ ')' : ""), whereArgs);
|
||||
|
@ -17,4 +17,7 @@ public final class CursorUtils {
|
||||
return cursor.getString(cursor.getColumnIndex(column.string));
|
||||
}
|
||||
|
||||
public static final Long getLong(Cursor cursor, RoutesColumns column) {
|
||||
return cursor.getLong(cursor.getColumnIndex(column.string));
|
||||
}
|
||||
}
|
||||
|
@ -1,13 +1,21 @@
|
||||
package com.dougkeen.bart.data;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.Arrays;
|
||||
import java.util.List;
|
||||
|
||||
import org.apache.commons.lang3.StringUtils;
|
||||
|
||||
import android.content.Context;
|
||||
import android.database.Cursor;
|
||||
import android.database.sqlite.SQLiteDatabase;
|
||||
import android.database.sqlite.SQLiteOpenHelper;
|
||||
import android.util.Log;
|
||||
|
||||
public class DatabaseHelper extends SQLiteOpenHelper {
|
||||
|
||||
private static final String DATABASE_NAME = "bart.dougkeen.db";
|
||||
private static final int DATABASE_VERSION = 1;
|
||||
private static final int DATABASE_VERSION = 2;
|
||||
|
||||
public static final String FAVORITES_TABLE_NAME = "Favorites";
|
||||
|
||||
@ -17,13 +25,72 @@ public class DatabaseHelper extends SQLiteOpenHelper {
|
||||
|
||||
@Override
|
||||
public void onCreate(SQLiteDatabase db) {
|
||||
db.execSQL("CREATE TABLE " + FAVORITES_TABLE_NAME + " (" +
|
||||
RoutesColumns._ID.getColumnDef() + " PRIMARY KEY, " +
|
||||
RoutesColumns.FROM_STATION.getColumnDef() + ", " +
|
||||
RoutesColumns.TO_STATION.getColumnDef() + ");");
|
||||
createFavoritesTable(db);
|
||||
}
|
||||
|
||||
private void createFavoritesTable(SQLiteDatabase db) {
|
||||
db.execSQL("CREATE TABLE IF NOT EXISTS " + FAVORITES_TABLE_NAME + " ("
|
||||
+ RoutesColumns._ID.getColumnDef() + " PRIMARY KEY, "
|
||||
+ RoutesColumns.FROM_STATION.getColumnDef() + ", "
|
||||
+ RoutesColumns.TO_STATION.getColumnDef() + ", "
|
||||
+ RoutesColumns.FARE.getColumnDef() + ", "
|
||||
+ RoutesColumns.FARE_LAST_UPDATED.getColumnDef() + ");");
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
|
||||
db.beginTransaction();
|
||||
try {
|
||||
createFavoritesTable(db);
|
||||
|
||||
List<String> columns = getColumns(db, FAVORITES_TABLE_NAME);
|
||||
|
||||
db.execSQL("ALTER TABLE " + FAVORITES_TABLE_NAME
|
||||
+ " RENAME TO temp_" + FAVORITES_TABLE_NAME);
|
||||
|
||||
createFavoritesTable(db);
|
||||
|
||||
columns.retainAll(getColumns(db, FAVORITES_TABLE_NAME));
|
||||
|
||||
String cols = StringUtils.join(columns, ",");
|
||||
db.execSQL(String.format(
|
||||
"INSERT INTO %s (%s) SELECT %s from temp_%s",
|
||||
FAVORITES_TABLE_NAME, cols, cols, FAVORITES_TABLE_NAME));
|
||||
|
||||
db.execSQL("DROP TABLE temp_" + FAVORITES_TABLE_NAME);
|
||||
|
||||
db.setTransactionSuccessful();
|
||||
} finally {
|
||||
db.endTransaction();
|
||||
}
|
||||
}
|
||||
|
||||
public static List<String> getColumns(SQLiteDatabase db, String tableName) {
|
||||
List<String> ar = null;
|
||||
Cursor c = null;
|
||||
try {
|
||||
c = db.rawQuery("select * from " + tableName + " limit 1", null);
|
||||
if (c != null) {
|
||||
ar = new ArrayList<String>(Arrays.asList(c.getColumnNames()));
|
||||
}
|
||||
} catch (Exception e) {
|
||||
Log.v(tableName, e.getMessage(), e);
|
||||
e.printStackTrace();
|
||||
} finally {
|
||||
if (c != null)
|
||||
c.close();
|
||||
}
|
||||
return ar;
|
||||
}
|
||||
|
||||
public static String join(List<String> list, String delim) {
|
||||
StringBuilder buf = new StringBuilder();
|
||||
int num = list.size();
|
||||
for (int i = 0; i < num; i++) {
|
||||
if (i != 0)
|
||||
buf.append(delim);
|
||||
buf.append((String) list.get(i));
|
||||
}
|
||||
return buf.toString();
|
||||
}
|
||||
}
|
||||
|
@ -1,20 +1,25 @@
|
||||
package com.dougkeen.bart.data;
|
||||
|
||||
public enum RoutesColumns {
|
||||
_ID("_id", "INTEGER"),
|
||||
FROM_STATION("FROM_STATION", "TEXT"),
|
||||
TO_STATION("TO_STATION", "TEXT");
|
||||
_ID("_id", "INTEGER", false),
|
||||
FROM_STATION("FROM_STATION", "TEXT", false),
|
||||
TO_STATION("TO_STATION", "TEXT", false),
|
||||
FARE("FARE", "TEXT", true),
|
||||
FARE_LAST_UPDATED("FARE_LAST_UPDATED", "INTEGER", true);
|
||||
|
||||
|
||||
// This class cannot be instantiated
|
||||
private RoutesColumns(String string, String type) {
|
||||
private RoutesColumns(String string, String type, Boolean nullable) {
|
||||
this.string = string;
|
||||
this.sqliteType = type;
|
||||
this.nullable = nullable;
|
||||
}
|
||||
|
||||
public final String string;
|
||||
public final String sqliteType;
|
||||
public final Boolean nullable;
|
||||
|
||||
protected String getColumnDef() {
|
||||
return string + " " + sqliteType;
|
||||
return string + " " + sqliteType + (nullable?"":" NOT NULL");
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user