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Caching toots (#809)

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* Initial timeline cache implementation

* Fix build/DI errors for caching

* Rename timeline entities tables. Add migration. Add DB scheme file.

* Fix uniqueness problem, change offline strategy, improve mapping

* Try to merge in new statuses, fix bottom loading, fix saving spans.

* Fix reblogs IDs, fix inserting elements from top

* Send one more request to get latest timeline statuses

* Give Timeline placeholders string id. Rewrite Either in Kotlin

* Initial placeholder implementation for caching

* Fix crash on removing overlap statuses

* Migrate counters to long

* Remove unused counters. Add minimal TimelineDAOTest

* Fix bug with placeholder ID

* Update cache in response to events. Refactor TimelineCases

* Fix crash, reduce number of placeholders

* Fix crash, fix filtering, improve placeholder handling

* Fix migration, add 8-9 migration test

* Fix initial timeline update, remove more placeholders

* Add cleanup for old statuses

* Fix cleanup

* Delete ExampleInstrumentedTest

* Improve timeline UX regarding caching

* Fix typos

* Fix initial timeline update

* Cleanup/fix initial timeline update

* Workaround for weird behavior of first post on initial tl update.

* Change counter types back to int

* Clear timeline cache on logout

* Fix loading when timeline is completely empty

* Fix androidx migration issues

* Fix tests

* Apply caching feedback

* Save account emojis to cache

* Fix warnings and bugs
This commit is contained in:
Ivan Kupalov 2019-01-14 22:05:08 +01:00 • committed by Konrad Pozniak
commit 3ab78a19bc
29 changed files with 1950 additions and 497 deletions
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125
app/src/main/java/com/keylesspalace/tusky/util/Either.java
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@ -1,125 +0,0 @@
/* Copyright 2017 Andrew Dawson
*
* This file is a part of Tusky.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky.util;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
/**
* Created by charlag on 05/11/17.
*
* Class to represent sum type/tagged union/variant/ADT e.t.c.
* It is either Left or Right.
*/
public final class Either<L, R> {
/**
* Constructs Left instance of either
* @param left Object to be considered Left
* @param <L> Left type
* @param <R> Right type
* @return new instance of Either which contains left.
*/
public static <L, R> Either<L, R> left(L left) {
return new Either<>(left, false);
}
/**
* Constructs Right instance of either
* @param right Object to be considered Right
* @param <L> Left type
* @param <R> Right type
* @return new instance of Either which contains right.
*/
public static <L, R> Either<L, R> right(R right) {
return new Either<>(right, true);
}
private final Object value;
// we need it because of the types erasure
private boolean isRight;
private Either(Object value, boolean isRight) {
this.value = value;
this.isRight = isRight;
}
public boolean isRight() {
return isRight;
}
/**
* Try to get contained object as a Left or throw an exception.
* @throws AssertionError If contained value is Right
* @return contained value as Right
*/
public @NonNull L getAsLeft() {
if (isRight) {
throw new AssertionError("Tried to get the Either as Left while it is Right");
}
//noinspection unchecked
return (L) value;
}
/**
* Try to get contained object as a Right or throw an exception.
* @throws AssertionError If contained value is Left
* @return contained value as Right
*/
public @NonNull R getAsRight() {
if (!isRight) {
throw new AssertionError("Tried to get the Either as Right while it is Left");
}
//noinspection unchecked
return (R) value;
}
/**
* Same as {@link #getAsLeft()} but returns {@code null} is the value if Right instead of
* throwing an exception.
* @return contained value as Left or null
*/
public @Nullable L getAsLeftOrNull() {
if (isRight) {
return null;
}
//noinspection unchecked
return (L) value;
}
/**
* Same as {@link #getAsRight()} but returns {@code null} is the value if Left instead of
* throwing an exception.
* @return contained value as Right or null
*/
public @Nullable R getAsRightOrNull() {
if (!isRight) {
return null;
}
//noinspection unchecked
return (R) value;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (!(obj instanceof Either)) return false;
Either that = (Either) obj;
return this.isRight == that.isRight &&
(this.value == that.value ||
this.value != null && this.value.equals(that.value));
}
}

37
app/src/main/java/com/keylesspalace/tusky/util/Either.kt Normal file
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@ -0,0 +1,37 @@
/* Copyright 2017 Andrew Dawson
*
* This file is a part of Tusky.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky.util
/**
* Created by charlag on 05/11/17.
*
* Class to represent sum type/tagged union/variant/ADT e.t.c.
* It is either Left or Right.
*/
sealed class Either<out L, out R> {
data class Left<out L, out R>(val value: L) : Either<L, R>()
data class Right<out L, out R>(val value: R) : Either<L, R>()
fun isRight() = this is Right
fun asLeftOrNull() = (this as? Left<L, R>)?.value
fun asRightOrNull() = (this as? Right<L, R>)?.value
fun asLeft(): L = (this as Left<L, R>).value
fun asRight(): R = (this as Right<L, R>).value
}

9
app/src/main/java/com/keylesspalace/tusky/util/ListUtils.java
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@ -18,16 +18,21 @@ package com.keylesspalace.tusky.util;
import androidx.annotation.Nullable;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
public class ListUtils {
/** @return true if list is null or else return list.isEmpty() */
/**
* @return true if list is null or else return list.isEmpty()
*/
public static boolean isEmpty(@Nullable List list) {
return list == null || list.isEmpty();
}
/** @return a new ArrayList containing the elements without duplicates in the same order */
/**
* @return a new ArrayList containing the elements without duplicates in the same order
*/
public static <T> ArrayList<T> removeDuplicates(List<T> list) {
LinkedHashSet<T> set = new LinkedHashSet<>(list);
return new ArrayList<>(set);