mirror of https://github.com/tasks/tasks
Remove DatabaseDao
Alex Baker
6 years ago
parent
c830b7f7ec
commit
6d027d01ed
@ -1,172 +0,0 @@
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/**
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* Copyright (c) 2012 Todoroo Inc
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*
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* See the file "LICENSE" for the full license governing this code.
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*/
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package com.todoroo.andlib.data;
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import android.content.ContentValues;
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import android.database.Cursor;
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import com.todoroo.andlib.sql.Criterion;
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import com.todoroo.andlib.sql.Query;
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import com.todoroo.astrid.dao.Database;
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import com.todoroo.astrid.data.Task;
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import com.todoroo.astrid.helper.UUIDHelper;
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import org.tasks.BuildConfig;
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import java.util.List;
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import java.util.concurrent.atomic.AtomicBoolean;
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import timber.log.Timber;
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/**
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* DAO for reading data from an instance of {@link Database}. If you
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* are writing an add-on for Astrid, you probably want to be using a subclass
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* of ContentResolverDao instead.
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*
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* @author Tim Su <tim@todoroo.com>
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*
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*/
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public class DatabaseDao {
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private final Table table = Task.TABLE;
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private final Database database;
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public DatabaseDao(Database database) {
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this.database = database;
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}
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public List<Task> toList(Query query) {
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return query(query).toList();
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}
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/**
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* Construct a query with SQL DSL objects
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*/
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public TodorooCursor query(Query query) {
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query.from(table);
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String queryString = query.toString();
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if (BuildConfig.DEBUG) {
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Timber.v(queryString);
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}
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Cursor cursor = database.rawQuery(queryString);
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return new TodorooCursor(cursor, query.getFields());
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}
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/**
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* Delete the given id
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* @return true if delete was successful
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*/
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public boolean delete(long id) {
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return database.delete(table.name,
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AbstractModel.ID_PROPERTY.eq(id).toString(), null) > 0;
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}
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/**
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* Delete all matching a clause
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* @param where predicate for deletion
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* @return # of deleted items
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*/
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public int deleteWhere(Criterion where) {
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Timber.v("deleteWhere(%s)", where);
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return database.delete(table.name,
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where.toString(), null);
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}
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/**
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* Update all matching a clause to have the values set on template object.
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* <p>
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* Example (updates "joe" => "bob" in metadata value1):
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* {code}
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* Metadata item = new Metadata();
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* item.setVALUE1("bob");
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* update(item, Metadata.VALUE1.eq("joe"));
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* {code}
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* @param where sql criteria
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* @param template set fields on this object in order to set them in the db.
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* @return # of updated items
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*/
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public int update(Criterion where, Task template) {
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return database.update(table.name, template.getSetValues(),
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where.toString());
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}
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private interface DatabaseChangeOp {
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boolean makeChange();
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}
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private boolean insertOrUpdateAndRecordChanges(Task item, DatabaseChangeOp op) {
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final AtomicBoolean result = new AtomicBoolean(false);
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synchronized(database) {
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result.set(op.makeChange());
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if (result.get()) {
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item.markSaved();
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if (BuildConfig.DEBUG) {
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Timber.v("%s %s", op, item.toString());
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}
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}
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}
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return result.get();
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}
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/**
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* Creates the given item.
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* @param item
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* item model
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* @return returns true on success.
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*/
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public boolean createNew(final Task item) {
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if (!item.containsValue(Task.UUID) || Task.isUuidEmpty(item.getUuid())) {
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item.setUuid(UUIDHelper.newUUID());
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}
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DatabaseChangeOp insert = new DatabaseChangeOp() {
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@Override
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public boolean makeChange() {
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ContentValues mergedValues = item.getMergedValues();
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mergedValues.remove(AbstractModel.ID_PROPERTY.name);
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long newRow = database.insert(table.name, mergedValues);
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boolean result = newRow >= 0;
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if (result) {
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item.setId(newRow);
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}
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return result;
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}
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@Override
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public String toString() {
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return "INSERT";
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}
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};
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return insertOrUpdateAndRecordChanges(item, insert);
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}
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/**
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* Saves the given item. Will not create a new item!
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* @param item
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* item model
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* @return returns true on success.
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*/
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public boolean saveExisting(final Task item) {
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final ContentValues values = item.getSetValues();
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if(values == null || values.size() == 0) // nothing changed
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{
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return true;
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}
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DatabaseChangeOp update = new DatabaseChangeOp() {
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@Override
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public boolean makeChange() {
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return database.update(table.name, values,
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AbstractModel.ID_PROPERTY.eq(item.getId()).toString()) > 0;
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}
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@Override
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public String toString() {
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return "UPDATE";
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}
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};
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return insertOrUpdateAndRecordChanges(item, update);
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}
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}
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