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Make category helper functions query new category table

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This commit is contained in:
Peter Serwylo 2016-10-16 18:51:23 +11:00
parent 634fe1084a
commit 68f666685f
1 changed files with 51 additions and 20 deletions
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71
app/src/main/java/org/fdroid/fdroid/data/CategoryProvider.java
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@ -9,14 +9,13 @@ import android.net.Uri;
import android.support.annotation.NonNull;
import org.fdroid.fdroid.R;
import org.fdroid.fdroid.Utils;
import org.fdroid.fdroid.data.Schema.CatJoinTable;
import org.fdroid.fdroid.data.Schema.CategoryTable;
import org.fdroid.fdroid.data.Schema.CategoryTable.Cols;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class CategoryProvider extends FDroidProvider {
@ -67,25 +66,21 @@ public class CategoryProvider extends FDroidProvider {
public static List<String> categories(Context context) {
final ContentResolver resolver = context.getContentResolver();
final Uri uri = AppProvider.getContentUri();
final String[] projection = {Schema.AppMetadataTable.Cols.Categories.CATEGORIES};
final Uri uri = CategoryProvider.getAllCategories();
final String[] projection = {Cols.NAME};
final Cursor cursor = resolver.query(uri, projection, null, null, null);
final Set<String> categorySet = new HashSet<>();
List<String> categories = new ArrayList<>(30);
if (cursor != null) {
if (cursor.getCount() > 0) {
cursor.moveToFirst();
while (!cursor.isAfterLast()) {
final String categoriesString = cursor.getString(0);
String[] categoriesList = Utils.parseCommaSeparatedString(categoriesString);
if (categoriesList != null) {
Collections.addAll(categorySet, categoriesList);
}
final String name = cursor.getString(0);
categories.add(name);
cursor.moveToNext();
}
}
cursor.close();
}
final List<String> categories = new ArrayList<>(categorySet);
Collections.sort(categories);
// Populate the category list with the real categories, and the
@ -101,15 +96,29 @@ public class CategoryProvider extends FDroidProvider {
private class Query extends QueryBuilder {
private boolean onlyCategoriesWithApps;
@Override
protected String getRequiredTables() {
return Schema.CategoryTable.NAME;
String joinType = onlyCategoriesWithApps ? " JOIN " : " LEFT JOIN ";
return CategoryTable.NAME + joinType + CatJoinTable.NAME + " ON (" +
CatJoinTable.Cols.CATEGORY_ID + " = " + CategoryTable.NAME + "." + Cols.ROW_ID + ") ";
}
@Override
public void addField(String field) {
appendField(field, getTableName());
}
@Override
protected String groupBy() {
return CategoryTable.NAME + "." + Cols.ROW_ID;
}
public void setOnlyCategoriesWithApps(boolean onlyCategoriesWithApps) {
this.onlyCategoriesWithApps = onlyCategoriesWithApps;
}
}
private static final String PROVIDER_NAME = "CategoryProvider";
@ -117,16 +126,22 @@ public class CategoryProvider extends FDroidProvider {
private static final UriMatcher MATCHER = new UriMatcher(-1);
private static final String PATH_CATEGORY_NAME = "categoryName";
private static final String PATH_ALL_CATEGORIES = "all";
private static final String PATH_CATEGORY_ID = "categoryId";
static {
MATCHER.addURI(getAuthority(), PATH_CATEGORY_NAME + "/*", CODE_SINGLE);
MATCHER.addURI(getAuthority(), PATH_ALL_CATEGORIES, CODE_LIST);
}
private static Uri getContentUri() {
return Uri.parse("content://" + getAuthority());
}
public static Uri getAllCategories() {
return Uri.withAppendedPath(getContentUri(), PATH_ALL_CATEGORIES);
}
public static Uri getCategoryUri(String categoryName) {
return getContentUri()
.buildUpon()
@ -152,7 +167,7 @@ public class CategoryProvider extends FDroidProvider {
@Override
protected String getTableName() {
return Schema.CategoryTable.NAME;
return CategoryTable.NAME;
}
@Override
@ -175,19 +190,35 @@ public class CategoryProvider extends FDroidProvider {
return new QuerySelection(selection, args);
}
protected QuerySelection queryAllInUse() {
final String selection = CatJoinTable.NAME + "." + CatJoinTable.Cols.APP_METADATA_ID + " IS NOT NULL ";
final String[] args = {};
return new QuerySelection(selection, args);
}
@Override
public Cursor query(@NonNull Uri uri, String[] projection, String customSelection, String[] selectionArgs, String sortOrder) {
if (MATCHER.match(uri) != CODE_SINGLE) {
throw new UnsupportedOperationException("Invalid URI for content provider: " + uri);
}
QuerySelection selection = new QuerySelection(customSelection, selectionArgs);
boolean onlyCategoriesWithApps = false;
switch (MATCHER.match(uri)) {
case CODE_SINGLE:
selection = selection.add(querySingle(uri.getLastPathSegment()));
break;
QuerySelection selection = new QuerySelection(customSelection, selectionArgs)
.add(querySingle(uri.getLastPathSegment()));
case CODE_LIST:
selection = selection.add(queryAllInUse());
onlyCategoriesWithApps = true;
break;
default:
throw new UnsupportedOperationException("Invalid URI for content provider: " + uri);
}
Query query = new Query();
query.addSelection(selection);
query.addFields(projection);
query.addOrderBy(sortOrder);
query.setOnlyCategoriesWithApps(onlyCategoriesWithApps);
Cursor cursor = LoggingQuery.query(db(), query.toString(), query.getArgs());
cursor.setNotificationUri(getContext().getContentResolver(), uri);
@ -198,7 +229,7 @@ public class CategoryProvider extends FDroidProvider {
* Deleting of categories is not required.
* It doesn't matter if we have a category in the database when no apps are in that category.
* They wont take up much space, and it is the presence of rows in the
* {@link Schema.CatJoinTable} which decides whether a category is displayed in F-Droid or not.
* {@link CatJoinTable} which decides whether a category is displayed in F-Droid or not.
*/
@Override
public int delete(@NonNull Uri uri, String where, String[] whereArgs) {